Issue Templates

- Updating Issue Templates

.github/ISSUE_TEMPLATE/bug.yml

@@ -1,87 +1,78 @@
-name: Iris Bug Report
-description: File a bug report for Iris
-labels: [ bug ]
+name: Bug report
+description: Something in Iris isn't working.
+labels: [bug]
+type: Bug
+assignees: [SwiftSwamp]
 body:
   - type: markdown
     attributes:
       value: |
-        Thank you for taking the time to fill this out!
-        If this does not work for you, feel free to use the [blank](https://github.com/VolmitSoftware/Iris/issues/new) format.
+        Make sure you're on the [latest release](https://github.com/VolmitSoftware/Iris/releases/latest) and that it hasn't [already been reported](https://github.com/VolmitSoftware/Iris/issues?q=is%3Aissue).
+
+        The Iris plugin supports Minecraft 26.1.2 through 26.3 on Paper, Purpur, Leaf, Canvas, Folia, and Spigot. The Fabric, Forge, and NeoForge builds support 26.3. Both need Java 25.
   - type: textarea
-    id: how
+    id: issue
     attributes:
-      label: Problem
-      description: Please give a text description of how you reached the problem
-      value: |
-        1. Install Iris...
-        2. Do this...
-        3. Do that...
-        4. Observe the error...
+      label: What issue are you having?
+      description: Include any error message you saw.
     validations:
       required: true
   - type: textarea
-    id: what
+    id: steps
     attributes:
-      label: Solution
-      description: Explain where you think the problem comes from (optional)
-      placeholder: The code to place a is missing b and c...
+      label: Steps to reproduce
+      placeholder: |
+        1. Start a server with Iris installed
+        2. Change ... in the config
+        3. Run /iris ...
+        4. ... happens instead of ...
     validations:
-      required: false
+      required: true
+  - type: input
+    id: diagnostics
+    attributes:
+      label: Debug dump or latest log file
+      description: Run `/iris debug dump upload=true` and paste the link. If Iris won't start, upload `logs/latest.log` to [mclo.gs](https://mclo.gs) and paste that link instead.
+      placeholder: https://mclo.gs/...
+    validations:
+      required: true
+  - type: input
+    id: plugin-version
+    attributes:
+      label: "Iris version"
+      description: Run `/iris debug version` (`/iris version` on Fabric, Forge, and NeoForge).
+    validations:
+      required: true
   - type: dropdown
     id: platform
     attributes:
-      label: Platform
-      description: Which server platform is Iris running on? Pick the loader or server software, not the launcher.
+      label: Server software
       options:
-        - Paper
-        - Purpur
-        - Leaf
-        - Canvas
-        - Folia
-        - Spigot / CraftBukkit
-        - Fabric
-        - Forge
-        - NeoForge
-        - Other (describe under Problem)
-    validations:
-      required: true
-  - type: dropdown
-    id: mcversion
-    attributes:
-      label: Minecraft Version
-      description: What version of Minecraft is the server on? Iris 4.x supports 26.1.2 to 26.3 on Bukkit-family servers and 26.3 on Fabric, Forge and NeoForge; older versions are not supported.
-      options:
-        - '26.3'
-        - '26.2'
-        - '26.1.2'
+        - "Paper"
+        - "Purpur"
+        - "Leaf"
+        - "Canvas"
+        - "Folia"
+        - "Spigot"
+        - "Fabric"
+        - "Forge"
+        - "NeoForge"
         - Other (unsupported)
     validations:
       required: true
-  - type: input
-    id: loaderversion
+  - type: dropdown
+    id: minecraft
     attributes:
-      label: Platform / Loader Version
-      description: Exact server or loader build (see console). For example "Paper 26.3-133", "Fabric Loader 0.19.5", "NeoForge 26.3.0.33-beta".
-      placeholder: DO NOT SAY "LATEST"
+      label: Minecraft version
+      options:
+        - "26.3"
+        - "26.2"
+        - "26.1.2"
+        - Other (unsupported)
     validations:
       required: true
-  - type: input
-    id: irisversion
+  - type: textarea
+    id: extra
     attributes:
-      label: Iris Version
-      description: What version of Iris are you running? (see console)
-      placeholder: DO NOT SAY "LATEST"
-    validations:
-      required: true
-  - type: input
-    id: logs
-    attributes:
-      label: Log
-      description: Paste a full log. Always use [mclogs](https://mclo.gs) Or [Pastebin](https://pastebin.com/). Must not be a crash report. Must be a full log. Must not be a screenshot of a log.
-      placeholder: https://mslog.gs/...
-    validations:
-      required: true
-  - type: markdown
-    id: thanks
-    attributes:
-      value: "Thank you for filling out the form! We will be with you soon. Please do not ask support to review your report."
+      label: Anything else?
+      description: Other plugins involved, screenshots, or videos.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Help and questions
+    url: https://volmitsoftware.com/discord
+    about: Ask setup and configuration questions on the Volmit Discord.
+  - name: "Iris documentation"
+    url: https://docs.volmitsoftware.com/iris
+    about: Installation, commands, permissions, and configuration.

.github/ISSUE_TEMPLATE/feature.yml

@@ -1,46 +1,28 @@
-name: Iris Feature Request
-description: File a feature request for Iris. If you want to report a bug this is not the place.
-labels: [ feature ]
+name: Suggestion
+description: Suggest a new feature or a change to Iris.
+labels: [enhancement]
+type: Feature
+assignees: [SwiftSwamp]
 body:
   - type: markdown
     attributes:
       value: |
-        Thank you for taking the time to fill this out!
-        If this does not work for you, feel free to use the [blank](https://github.com/VolmitSoftware/Iris/issues/new) format.
-  - type: dropdown
-    id: arc
+        Check the [existing suggestions](https://github.com/VolmitSoftware/Iris/issues?q=is%3Aissue+label%3Aenhancement) first and add relevant information to the existing issue.
+  - type: textarea
+    id: problem
     attributes:
-      label: Adding, Removing, or Changing
-      description: What are you doing
-      options:
-        - Adding
-        - Removing
-        - Changing
-    validations:
-      required: true
-  - type: input
-    id: atype
-    attributes:
-      label: Type of Modification
-      description: What is it for?
-      value: I want to ...
+      label: What are your suggestions for new features or changes?
     validations:
       required: true
   - type: textarea
-    id: desc
+    id: proposal
     attributes:
-      label: What are you trying to modify
-      description: Give as detailed of a description as you can for the modification that you want done (include pictures if applicable)
-      value: The way I would implement this is ...
+      label: How should it work?
+      description: Provide as much detail as possible on what you would like changed or added.
     validations:
       required: true
   - type: textarea
-    id: alternative
+    id: extra
     attributes:
-      label: Alternatives
-      description: What alternatives have you considered?
-      value: If this could not be implemented I would ...
-  - type: markdown
-    id: thanks
-    attributes:
-      value: "Thank you for filling out the form! We will be with you soon. Please do not ask support to review your report."
+      label: Anything else?
+      description: Any additional information such as screenshots, examples, etc.

.github/ISSUE_TEMPLATE/translation.yml

@@ -0,0 +1,55 @@
+name: Translation
+description: A message in Iris is wrong, missing, or unclear.
+labels: [bug]
+type: Bug
+assignees: [SwiftSwamp]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        The language files are in [`core/src/main/resources/languages/`](https://github.com/VolmitSoftware/Iris/tree/HEAD/core/src/main/resources/languages).
+
+        You can create a pull request to modify the files directly.
+  - type: dropdown
+    id: language
+    attributes:
+      label: Language
+      options:
+        - English (en_US)
+        - German (de_DE)
+        - Spanish (es_ES)
+        - Finnish (fi_FI)
+        - French (fr_FR)
+        - Hebrew (he_IL)
+        - Italian (it_IT)
+        - Japanese (ja-JP)
+        - Korean (ko_KR)
+        - Lithuanian (lt_LT)
+        - Dutch (nl_NL)
+        - Polish (pl_PL)
+        - Portuguese (pt_PT)
+        - Russian (ru_RU)
+        - Turkish (tr_TR)
+        - Vietnamese (vi_VI)
+        - Chinese, Simplified (zh_CN)
+        - Chinese, Traditional (zh_TW)
+        - Another language (name it below)
+    validations:
+      required: true
+  - type: textarea
+    id: current
+    attributes:
+      label: Current text
+    validations:
+      required: true
+  - type: textarea
+    id: suggested
+    attributes:
+      label: Suggested text
+    validations:
+      required: true
+  - type: input
+    id: where
+    attributes:
+      label: Where does it appear?
+      description: The command used or message key where it is appearing.

.gitignore

@@ -76,3 +76,8 @@ BUILDS/
 .compatwt/
 
 .worktrees/
+
+/VolmLib/
+/docs/
+/.perf/
+/.codegraph/

LICENSE.md

@@ -1,160 +1,215 @@
                     GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
-Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
-Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
 
                             Preamble
 
-The GNU General Public License is a free, copyleft license for software and other kinds of works.
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
 
-The licenses for most software and other practical works are designed to take away your freedom to share and change the
-works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all
-versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use
-the GNU General Public License for most of our software; it applies also to any other work released this way by its
-authors. You can apply it to your programs, too.
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
 
-When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make
-sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive
-source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and
-that you know you can do these things.
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
 
-To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights.
-Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it:
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+  To protect your rights, we need to prevent others from denying you
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-For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients
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-Developers that use the GNU GPL protect your rights with two steps:
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-and/or modify it.
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
 
-For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software.
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 patents cannot be used to render the program non-free.
 
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                        TERMS AND CONDITIONS
 
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 "recipients" may be individuals or organizations.
 
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     a) The work must carry prominent notices stating that you modified
     it, and giving a relevant date.
@@ -177,17 +232,22 @@ code under the terms of section 4, provided that you also meet all of these cond
     interfaces that do not display Appropriate Legal Notices, your
     work need not make them do so.
 
-A compilation of a covered work with other separate and independent works, which are not by their nature extensions of
-the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or
-distribution medium, is called an
-"aggregate" if the compilation and its resulting copyright are not used to limit the access or legal rights of the
-compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause
-this License to apply to the other parts of the aggregate.
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
 
-6. Conveying Non-Source Forms.
+  6. Conveying Non-Source Forms.
 
-You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the
-machine-readable Corresponding Source under the terms of this License, in one of these ways:
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
 
     a) Convey the object code in, or embodied in, a physical product
     (including a physical distribution medium), accompanied by the
@@ -230,55 +290,77 @@ machine-readable Corresponding Source under the terms of this License, in one of
     Source of the work are being offered to the general public at no
     charge under subsection 6d.
 
-A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library,
-need not be included in conveying the object code work.
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
 
-A "User Product" is either (1) a "consumer product", which means any tangible personal property which is normally used
-for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In
-determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage. For a
-particular product received by a particular user, "normally used" refers to a typical or common use of that class of
-product, regardless of the status of the particular user or of the way in which the particular user actually uses, or
-expects or is expected to use, the product. A product is a consumer product regardless of whether the product has
-substantial commercial, industrial or non-consumer uses, unless such uses represent the only significant mode of use of
-the product.
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
 
-"Installation Information" for a User Product means any methods, procedures, authorization keys, or other information
-required to install and execute modified versions of a covered work in that User Product from a modified version of its
-Corresponding Source. The information must suffice to ensure that the continued functioning of the modified object code
-is in no case prevented or interfered with solely because modification has been made.
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
 
-If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the
-conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to
-the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding
-Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not
-apply if neither you nor any third party retains the ability to install modified object code on the User Product (for
-example, the work has been installed in ROM).
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
 
-The requirement to provide Installation Information does not include a requirement to continue to provide support
-service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product
-in which it has been modified or installed. Access to a network may be denied when the modification itself materially
-and adversely affects the operation of the network or violates the rules and protocols for communication across the
-network.
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
 
-Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format
-that is publicly documented (and with an implementation available to the public in source code form), and must require
-no special password or key for unpacking, reading or copying.
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
 
-7. Additional Terms.
+  7. Additional Terms.
 
-"Additional permissions" are terms that supplement the terms of this License by making exceptions from one or more of
-its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were
-included in this License, to the extent that they are valid under applicable law. If additional permissions apply only
-to part of the Program, that part may be used separately under those permissions, but the entire Program remains
-governed by this License without regard to the additional permissions.
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
 
-When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or
-from any part of it.  (Additional permissions may be written to require their own removal in certain cases when you
-modify the work.)  You may place additional permissions on material, added by you to a covered work, for which you have
-or can give appropriate copyright permission.
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
 
-Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by
-the copyright holders of that material) supplement the terms of this License with terms:
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
 
     a) Disclaiming warranty or limiting liability differently from the
     terms of sections 15 and 16 of this License; or
@@ -303,182 +385,251 @@ the copyright holders of that material) supplement the terms of this License wit
     any liability that these contractual assumptions directly impose on
     those licensors and authors.
 
-All other non-permissive additional terms are considered "further restrictions" within the meaning of section 10. If the
-Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with
-a term that is a further restriction, you may remove that term. If a license document contains a further restriction but
-permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of
-that license document, provided that the further restriction does not survive such relicensing or conveying.
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
 
-If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a
-statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
 
-Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as
-exceptions; the above requirements apply either way.
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
 
-8. Termination.
+  8. Termination.
 
-You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to
-propagate or modify it is void, and will automatically terminate your rights under this License (including any patent
-licenses granted under the third paragraph of section 11).
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
 
-However, if you cease all violation of this License, then your license from a particular copyright holder is
-reinstated (a)
-provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b)
-permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days
-after the cessation.
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
 
-Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you
-of the violation by some reasonable means, this is the first time you have received notice of violation of this
-License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the
-notice.
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
 
-Termination of your rights under this section does not terminate the licenses of parties who have received copies or
-rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not
-qualify to receive new licenses for the same material under section 10.
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
 
-9. Acceptance Not Required for Having Copies.
+  9. Acceptance Not Required for Having Copies.
 
-You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a
-covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not
-require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered
-work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
 covered work, you indicate your acceptance of this License to do so.
 
-10. Automatic Licensing of Downstream Recipients.
+  10. Automatic Licensing of Downstream Recipients.
 
-Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run,
-modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third
-parties with this License.
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
 
-An "entity transaction" is a transaction transferring control of an organization, or substantially all assets of one, or
-subdividing an organization, or merging organizations. If propagation of a covered work results from an entity
-transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work
-the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the
-Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with
-reasonable efforts.
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
 
-You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For
-example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License,
-and you may not initiate litigation
-(including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using,
-selling, offering for sale, or importing the Program or any portion of it.
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
 
-11. Patents.
+  11. Patents.
 
-A "contributor" is a copyright holder who authorizes use under this License of the Program or a work on which the
-Program is based. The work thus licensed is called the contributor's "contributor version".
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
 
-A contributor's "essential patent claims" are all patent claims owned or controlled by the contributor, whether already
-acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or
-selling its contributor version, but do not include claims that would be infringed only as a consequence of further
-modification of the contributor version. For purposes of this definition, "control" includes the right to grant patent
-sublicenses in a manner consistent with the requirements of this License.
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
 
-Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential
-patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its
-contributor version.
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
 
-In the following three paragraphs, a "patent license" is any express agreement or commitment, however denominated, not
-to enforce a patent
-(such as an express permission to practice a patent or covenant not to sue for patent infringement). To "grant" such a
-patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
 
-If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not
-available for anyone to copy, free of charge and under the terms of this License, through a publicly available network
-server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available,
-or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a
-manner consistent with the requirements of this License, to extend the patent license to downstream recipients.  "
-Knowingly relying" means you have actual knowledge that, but for the patent license, your conveying the covered work in
-a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in
-that country that you have reason to believe are valid.
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
 
-If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring
-conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing
-them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is
-automatically extended to all recipients of the covered work and works based on it.
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
 
-A patent license is "discriminatory" if it does not include within the scope of its coverage, prohibits the exercise of,
-or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You
-may not convey a covered work if you are a party to an arrangement with a third party that is in the business of
-distributing software, under which you make payment to the third party based on the extent of your activity of conveying
-the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a
-discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from
-those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered
-work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
 
-Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to
-infringement that may otherwise be available to you under applicable patent law.
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
 
-12. No Surrender of Others' Freedom.
+  12. No Surrender of Others' Freedom.
 
-If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this
-License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to
-satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence
-you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further
-conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License
-would be to refrain entirely from conveying the Program.
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
 
-13. Use with the GNU Affero General Public License.
+  13. Use with the GNU Affero General Public License.
 
-Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work
-licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the
-resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special
-requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply
-to the combination as such.
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
 
-14. Revised Versions of this License.
+  14. Revised Versions of this License.
 
-The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to
-time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new
-problems or concerns.
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
 
-Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the
-GNU General Public License "or any later version" applies to it, you have the option of following the terms and
-conditions either of that numbered version or of any later version published by the Free Software Foundation. If the
-Program does not specify a version number of the GNU General Public License, you may choose any version ever published
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
 by the Free Software Foundation.
 
-If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used,
-that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the
-Program.
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
 
-Later license versions may give you additional or different permissions. However, no additional obligations are imposed
-on any author or copyright holder as a result of your choosing to follow a later version.
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
 
-15. Disclaimer of Warranty.
+  15. Disclaimer of Warranty.
 
-THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING
-THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
-IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU
-ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
 
-16. Limitation of Liability.
+  16. Limitation of Liability.
 
-IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO
-MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
-INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO
-LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
-TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
-DAMAGES.
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
 
-17. Interpretation of Sections 15 and 16.
+  17. Interpretation of Sections 15 and 16.
 
-If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to
-their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil
-liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program
-in return for a fee.
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
 
                      END OF TERMS AND CONDITIONS
 
             How to Apply These Terms to Your New Programs
 
-If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve
-this is to make it free software which everyone can redistribute and change under these terms.
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
 
-To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to
-most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer
-to where the full notice is found.
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
 
     <one line to give the program's name and a brief idea of what it does.>
     Copyright (C) <year>  <name of author>
@@ -498,21 +649,26 @@ to where the full notice is found.
 
 Also add information on how to contact you by electronic and paper mail.
 
-If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
 
     <program>  Copyright (C) <year>  <name of author>
     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.
 
-The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of
-course, your program's commands might be different; for a GUI interface, you would use an "about box".
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
 
-You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for
-the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
 <https://www.gnu.org/licenses/>.
 
-The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is
-a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If
-this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
 <https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -25,7 +25,7 @@ Canonical English is defined in the typed Java catalogs under `core/src/main/jav
 | Spigot / CraftBukkit | plugin jar | 26.1.2 - 26.3 | Managed `iris:*` creation and generation; exact vanilla-slot `/iris replace` is unavailable |
 | Fabric | mod jar | 26.3 | Server worldgen + client HUD; requires Fabric Loader 0.19.5+ |
 | Forge | mod jar | 26.3 | Server worldgen + client HUD; current target is Forge 26.3-66.0.8 |
-| NeoForge | mod jar | 26.3 | Server worldgen + client HUD; current target is NeoForge 26.3.0.33-beta |
+| NeoForge | mod jar | 26.3 | Server worldgen + client HUD; requires NeoForge 26.3.0.65-beta+; current target is NeoForge 26.3.0.83 |
 
 Java 25 is required on every platform.
 
@@ -252,7 +252,9 @@ Requirements: JDK 25 (set `JAVA_HOME` to it). The Gradle wrapper handles everyth
 ./gradlew buildAllToOut
 ```
 
-builds every platform artifact into the workspace-level `../PluginOuts/` directory:
+builds every platform artifact into the workspace-level `../PluginOuts/` directory: the Bukkit jar
+and a Fabric, Forge and NeoForge jar for every Minecraft version in `gradle/mod-targets.json`
+(1.21.1, 26.1.2, 26.2 and 26.3):
 
 ```
 Iris v<version> [CraftBukkit] <mc>.jar
@@ -261,14 +263,18 @@ Iris v<version> [Forge] <mc>+<loader>.jar
 Iris v<version> [NeoForge] <mc>+<loader>.jar
 ```
 
-Per-platform tasks: `./gradlew buildBukkit`, `buildFabric`, `buildForge`, `buildNeoforge`. The
+Per-platform tasks: `./gradlew buildBukkit`, and `build<Loader><mc>` for one mod jar, for example
+`buildFabric26_2` or `buildNeoForge1_21_1`. `buildFabric`, `buildForge` and `buildNeoforge` export the
+26.3 jars. `./gradlew checkAll` runs every check, then builds and verifies all twelve mod jars and runs their
+unit tests; Forge 1.21.1 only compiles its tests because Forge 52 cannot bootstrap Minecraft outside
+FML. The
 SPI jar (the pure-JVM adapter/platform contract, not the stable plugin API) is built to `spi/build/libs/` by
 `./gradlew :spi:jar`.
 
 `./gradlew buildAll` also runs `buildAllToOut` and copies the jars into a consumer dropin tree
 for a local test server. The consumer directory defaults to `../../[Minecraft Server]/consumers/`
 when it exists, otherwise `build/consumers/` inside the repo. `-Plocation=/path/to/consumers`
-changes only the consumer directory. Both tasks copy all four verified platform jars into
+changes only the consumer directory. Both tasks copy every verified platform jar into
 `../PluginOuts/`.
 
 VolmLib is built from source when a `VolmLib` checkout sits beside the repo or in a parent directory

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/nativegen/IrisChunkGeneratorHeightCacheTest.java

@@ -14,6 +14,7 @@ import net.minecraft.SharedConstants;
 import net.minecraft.server.Bootstrap;
 import net.minecraft.world.level.LevelHeightAccessor;
 import net.minecraft.world.level.levelgen.Heightmap;
+import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Rule;
 import org.junit.Test;
@@ -45,6 +46,11 @@ public final class IrisChunkGeneratorHeightCacheTest {
         NativeBlockTags.bindHeightmapFixtures();
     }
 
+    @AfterClass
+    public static void restoreBlockTags() {
+        NativeBlockTags.restoreTags();
+    }
+
     @Test
     public void repeatedNativeHeightUsesLiveHeightQueriesAcrossRuntimeChanges() throws Exception {
         Fixture fixture = fixture();

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/nativegen/NativeTransitionColumnTest.java

@@ -20,6 +20,7 @@ import net.minecraft.world.level.block.Blocks;
 import net.minecraft.world.level.block.RotatedPillarBlock;
 import net.minecraft.world.level.block.LiquidBlock;
 import net.minecraft.world.level.levelgen.Heightmap;
+import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Rule;
 import org.junit.Test;
@@ -46,6 +47,11 @@ public final class NativeTransitionColumnTest {
         NativeBlockTags.bindHeightmapFixtures();
     }
 
+    @AfterClass
+    public static void restoreBlockTags() {
+        NativeBlockTags.restoreTags();
+    }
+
     @Test
     public void customKeysUseCarrierForNativeColumnsAndHeightmaps() {
         String key = "itemsadder:rocks/ruby_ore";

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/nativegen/v26_3_R1/NativeBlockTags.java

@@ -1,21 +1,30 @@
 package art.arcane.iris.nativegen.v26_3_R1;
 
 import net.minecraft.core.Holder;
+import net.minecraft.core.HolderSet;
 import net.minecraft.core.registries.BuiltInRegistries;
 import net.minecraft.core.registries.Registries;
 import net.minecraft.tags.BlockTags;
 import net.minecraft.tags.TagLoader;
+import net.minecraft.tags.TagKey;
 import net.minecraft.world.level.block.Block;
 import net.minecraft.world.level.block.Blocks;
 
+import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
 public final class NativeBlockTags {
+    private static Map<TagKey<Block>, List<Holder<Block>>> originalTags;
+
     private NativeBlockTags() {
     }
 
     public static void bindHeightmapFixtures() {
+        originalTags = new HashMap<>();
+        for (HolderSet.Named<Block> tag : BuiltInRegistries.BLOCK.getTags().toList()) {
+            originalTags.put(tag.key(), tag.stream().toList());
+        }
         List<Holder<Block>> solid = List.of(Blocks.STONE.builtInRegistryHolder(),
                 Blocks.OAK_LOG.builtInRegistryHolder(), Blocks.SPRUCE_LOG.builtInRegistryHolder());
         List<Holder<Block>> canopy = List.of(Blocks.STONE.builtInRegistryHolder(),
@@ -25,4 +34,12 @@ public final class NativeBlockTags {
                 BlockTags.BLOCKS_MOTION_IN_HEIGHTMAP, canopy,
                 BlockTags.BLOCKS_MOTION_IN_HEIGHTMAP_NO_LEAVES, solid))).apply();
     }
+
+    public static void restoreTags() {
+        if (originalTags == null) {
+            return;
+        }
+        BuiltInRegistries.BLOCK.prepareTagReload(new TagLoader.LoadResult<>(Registries.BLOCK, originalTags)).apply();
+        originalTags = null;
+    }
 }

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/platform/bukkit/nms/v26_3_R1/WorldgenTerrainHeightmapsTest.java

@@ -34,6 +34,7 @@ import net.minecraft.world.level.levelgen.structure.pieces.PiecesContainer;
 import net.minecraft.world.level.levelgen.structure.structures.IglooPieces;
 import net.minecraft.world.level.levelgen.structure.structures.SwampHutPiece;
 import net.minecraft.world.level.levelgen.structure.structures.SwampHutStructure;
+import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Test;
 
@@ -68,6 +69,11 @@ public class WorldgenTerrainHeightmapsTest {
         NativeBlockTags.bindHeightmapFixtures();
     }
 
+    @AfterClass
+    public static void restoreBlockTags() {
+        NativeBlockTags.restoreTags();
+    }
+
     @Test
     public void authoringHeightmapsReadPlacedObjectsAndFluidsWithoutTerrainResolvers() {
         ProtoChunk chunk = terrainChunk(new ChunkPos(0, 0));

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/BareMobSpawnHistoryTest.java

@@ -13,6 +13,7 @@ import com.google.gson.JsonParser;
 import org.bukkit.Bukkit;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
+import org.junit.ClassRule;
 import org.junit.Test;
 
 import java.io.File;
@@ -26,6 +27,9 @@ import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertThrows;
 
 public final class BareMobSpawnHistoryTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     private static final String LEGACY_RENDERER_IDENTITY = "bukkit-v26_3_R1-generated-registry-json-v1";
     private static final String NATURAL_MOB_SPAWNS = "minecraft:gameplay/natural_mob_spawns";
     private static final GenerationRegistryContract.PhysicalResourceKey INSTALLED =

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/HeadlessChunkGeneratorTest.java

@@ -29,6 +29,7 @@ import net.minecraft.world.level.levelgen.structure.StructureStart;
 import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemplateManager;
 import net.minecraft.world.level.storage.LevelStorageSource;
 import org.junit.Rule;
+import org.junit.ClassRule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
 import org.bukkit.craftbukkit.generator.CustomChunkGenerator;
@@ -49,6 +50,9 @@ import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 
 public class HeadlessChunkGeneratorTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     @Rule
     public TemporaryFolder temporary = new TemporaryFolder();
 

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/HeadlessChunkLightingTest.java

@@ -31,6 +31,7 @@ import net.minecraft.world.level.levelgen.structure.templatesystem.StructureTemp
 import net.minecraft.world.level.storage.LevelStorageSource;
 import org.bukkit.Bukkit;
 import org.junit.Rule;
+import org.junit.ClassRule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
 
@@ -48,6 +49,9 @@ import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 
 public final class HeadlessChunkLightingTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     @Rule
     public TemporaryFolder temporary = new TemporaryFolder();
 

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/HeadlessChunkSerializationTest.java

@@ -38,6 +38,7 @@ import net.minecraft.world.ticks.ScheduledTick;
 import org.bukkit.NamespacedKey;
 import org.bukkit.persistence.PersistentDataType;
 import org.junit.Rule;
+import org.junit.ClassRule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
 
@@ -54,6 +55,9 @@ import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
 public class HeadlessChunkSerializationTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     @Rule
     public TemporaryFolder temporary = new TemporaryFolder();
 

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/HeadlessNativeBootstrapTest.java

@@ -9,6 +9,7 @@ import net.minecraft.world.item.Items;
 
 import java.util.Map;
 import net.minecraft.world.level.block.Blocks;
+import org.junit.ClassRule;
 import org.junit.Test;
 import org.bukkit.Bukkit;
 
@@ -18,6 +19,9 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
 public final class HeadlessNativeBootstrapTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     @Test
     public void bindsNativeItemComponentsWithoutStartingServer() throws Exception {
         HeadlessNativeBootstrap.bindComponents(HeadlessNativeTestRegistries.get());

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/HeadlessNativeRegistriesTest.java

@@ -7,12 +7,16 @@ import net.minecraft.resources.Identifier;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.world.level.biome.Biome;
 import net.minecraft.world.level.levelgen.structure.Structure;
+import org.junit.ClassRule;
 import org.junit.Test;
 
 
 import static org.junit.Assert.assertTrue;
 
 public final class HeadlessNativeRegistriesTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     @Test
     public void nativeStructureBiomeTagsUseTheLoadedBiomeHolders() throws Exception {
         RegistryAccess registries = HeadlessNativeTestRegistries.get();

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/HeadlessNativeRegistryTest.java

@@ -4,6 +4,7 @@ import art.arcane.volmlib.nativelib.minecraft26_2.modded.NativeRegistryAccess;
 import net.minecraft.core.registries.Registries;
 import org.bukkit.Bukkit;
 import org.junit.BeforeClass;
+import org.junit.ClassRule;
 import org.junit.Test;
 
 import java.util.Map;
@@ -17,6 +18,9 @@ import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertThrows;
 
 public final class HeadlessNativeRegistryTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     @BeforeClass
     public static void bootstrap() {
         HeadlessNativeBootstrap.initialize();

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/HeadlessNativeTileTest.java

@@ -11,6 +11,7 @@ import art.arcane.volmlib.nativelib.minecraft26_2.modded.NativeTileReader;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.data.registries.VanillaRegistries;
 import org.junit.BeforeClass;
+import org.junit.ClassRule;
 import org.junit.Test;
 
 import java.io.ByteArrayInputStream;
@@ -23,6 +24,9 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertThrows;
 
 public final class HeadlessNativeTileTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     @BeforeClass
     public static void bootstrap() {
         HeadlessNativeBootstrap.initialize();

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/HeadlessRegionTerrainTest.java

@@ -17,6 +17,7 @@ import org.bukkit.Bukkit;
 import org.bukkit.NamespacedKey;
 import org.bukkit.persistence.PersistentDataType;
 import org.junit.Rule;
+import org.junit.ClassRule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
 import org.spigotmc.SpigotWorldConfig;
@@ -36,6 +37,9 @@ import static org.junit.Assert.assertSame;
 import static org.junit.Assert.assertTrue;
 
 public final class HeadlessRegionTerrainTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     @Rule
     public TemporaryFolder temporary = new TemporaryFolder();
 

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/NativeRegionTerrainWriterTest.java

@@ -24,6 +24,7 @@ import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.chunk.storage.RegionFile;
 import net.minecraft.world.level.chunk.storage.RegionStorageInfo;
 import org.junit.BeforeClass;
+import org.junit.ClassRule;
 import org.junit.Test;
 
 import java.io.DataInputStream;
@@ -38,6 +39,9 @@ import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 
 public final class NativeRegionTerrainWriterTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     @BeforeClass
     public static void bootstrap() {
         SharedConstants.tryDetectVersion();

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/OfflineNativeFeatureFeasibilityTest.java

@@ -26,6 +26,7 @@ import net.minecraft.world.level.material.Fluids;
 import org.bukkit.Bukkit;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
+import org.junit.ClassRule;
 import org.junit.Test;
 
 import java.util.ArrayList;
@@ -40,6 +41,9 @@ import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 
 public final class OfflineNativeFeatureFeasibilityTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     private static HeadlessNativeRegistries loaded;
     private static RegistryAccess registries;
     private static DimensionType dimension;

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/OfflineRegionPublicationTest.java

@@ -1,6 +1,7 @@
 package art.arcane.iris.probe;
 
 import org.junit.Rule;
+import org.junit.ClassRule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
 import org.mockito.MockedStatic;
@@ -22,6 +23,9 @@ import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.mockStatic;
 
 public final class OfflineRegionPublicationTest {
+    @ClassRule
+    public static final PaperRegistryIsolation registryIsolation = new PaperRegistryIsolation();
+
     @Rule
     public TemporaryFolder temporary = new TemporaryFolder();
 

adapters/bukkit/nms/v26_3_R1/src/test/java/art/arcane/iris/probe/PaperRegistryIsolation.java

@@ -0,0 +1,37 @@
+package art.arcane.iris.probe;
+
+import io.papermc.paper.registry.PaperRegistryAccess;
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+import java.lang.reflect.Field;
+import java.util.HashMap;
+import java.util.Map;
+
+public final class PaperRegistryIsolation implements TestRule {
+    @Override
+    public Statement apply(Statement base, Description description) {
+        return new Statement() {
+            @Override
+            public void evaluate() throws Throwable {
+                Map<Object, Object> registries = registries();
+                Map<Object, Object> previous = new HashMap<>(registries);
+                registries.clear();
+                try {
+                    base.evaluate();
+                } finally {
+                    registries.clear();
+                    registries.putAll(previous);
+                }
+            }
+        };
+    }
+
+    @SuppressWarnings("unchecked")
+    private static Map<Object, Object> registries() throws ReflectiveOperationException {
+        Field field = PaperRegistryAccess.class.getDeclaredField("registries");
+        field.setAccessible(true);
+        return (Map<Object, Object>) field.get(PaperRegistryAccess.instance());
+    }
+}

adapters/bukkit/plugin/src/main/java/art/arcane/iris/Iris.java

@@ -18,6 +18,7 @@
 
 package art.arcane.iris;
 
+import java.util.concurrent.CompletionStage;
 import art.arcane.volmlib.util.diagnostics.BukkitDebugDump;
 import art.arcane.iris.generation.runtime.IrisEngineEffects;
 import art.arcane.iris.generation.runtime.IrisWorldManager;
@@ -36,6 +37,7 @@ import art.arcane.iris.world.PendingWorldDeleteQueue;
 import art.arcane.iris.world.PendingWorldReplacementManager;
 import art.arcane.iris.world.WorldRefusalReporter;
 import art.arcane.iris.configuration.SettingsHotloadWatch;
+import art.arcane.iris.update.IrisUpdateNotifier;
 import art.arcane.iris.pack.datapack.ServerConfigurator;
 import art.arcane.iris.pack.datapack.DatapackIngestService;
 import art.arcane.iris.pack.datapack.DatapackIngestService.StartupValidationOutcome;
@@ -131,8 +133,11 @@ import org.bukkit.command.Command;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Event;
+import org.bukkit.event.EventHandler;
 import org.bukkit.event.HandlerList;
 import org.bukkit.event.Listener;
+import org.bukkit.event.server.PluginDisableEvent;
+import org.bukkit.event.server.PluginEnableEvent;
 import org.bukkit.generator.BiomeProvider;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.plugin.IllegalPluginAccessException;
@@ -204,6 +209,7 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
     private volatile PlaceholderRegistration papiRegistration;
     private volatile IrisPapiListener papiListener;
     private volatile IrisPapiState papiState;
+    private volatile boolean papiLifecycleActive;
     private KMap<Class<? extends IrisService>, IrisService> services;
     // Copy-on-write: mutated on the main thread during enable() and iterated by the JVM
     // shutdown-hook thread during teardown; a plain list would CME and abort the teardown.
@@ -214,9 +220,9 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
     private final PendingWorldDeleteQueue pendingWorldDeletes = new PendingWorldDeleteQueue(this);
     private final PendingWorldReplacementManager pendingWorldReplacements = new PendingWorldReplacementManager(this);
     private BukkitLanguageSwitcher languageSwitcher;
+    private IrisUpdateNotifier updateNotifier;
     private BukkitDebugDump debugDump;
     private volatile SettingsHotloadWatch settingsHotloadWatch;
-    private volatile Thread serverLifecycleThread;
     private volatile ServerShutdownBoundary serverShutdownBoundary;
 
     public static VolmitSender getSender() {
@@ -636,6 +642,7 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
         languageSwitcher = BukkitLanguageSwitcher.register(this, IrisLanguage.selections(),
                 new BukkitLanguageSwitcher.Options("iris", "iris.all",
                         DirectorMiniMenu.Theme.irisGreen(), IrisLanguage.directorResolver(), IrisLanguage.editorOptions()));
+        updateNotifier = new IrisUpdateNotifier(this);
         PaperLibBootstrap.install();
         SimdSupport.install();
         timings.mark("bootstrap");
@@ -824,7 +831,6 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
 
     public void addShutdownHook() {
         removeShutdownHook();
-        serverLifecycleThread = Thread.currentThread();
         serverShutdownBoundary = INMS.isBound() ? INMS.get().createServerShutdownBoundary() : null;
         shutdownHook = new Thread(this::runShutdownHook, "Iris-ShutdownHook");
         try {
@@ -863,7 +869,14 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
      */
     private CompletableFuture<ManagedWorldLoader.ManagedWorldLoad> loadManagedWorld(String configuredWorldName) {
         return worldReconciler.loadWorld(ServerProperties.BUKKIT_YML, configuredWorldName)
-                .thenApply(result -> new ManagedWorldLoader.ManagedWorldLoad(result.succeeded(), result.message()));
+                .thenApply(this::managedWorldLoadResult);
+    }
+
+    private ManagedWorldLoader.ManagedWorldLoad managedWorldLoadResult(BukkitWorldReconciler.LoadResult result) {
+        if (!result.succeeded() && result.failure() != null) {
+            reportError("Could not explicitly load Iris world " + result.worldKey() + ": " + result.message(), result.failure());
+        }
+        return new ManagedWorldLoader.ManagedWorldLoad(result.succeeded(), result.message());
     }
 
     public PendingWorldReplacementManager pendingWorldReplacements() {
@@ -927,6 +940,8 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
             ServerConfigurator.restartAtStartupBoundary(restartReason);
             return;
         }
+        papiLifecycleActive = true;
+        setupPapi();
         reportLockedRuntime();
     }
 
@@ -973,6 +988,12 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
     }
 
     public void onDisable() {
+        preservePendingBlockDrops();
+        papiLifecycleActive = false;
+        if (updateNotifier != null) {
+            updateNotifier.close();
+            updateNotifier = null;
+        }
         if (debugDump != null) {
             debugDump.close();
             debugDump = null;
@@ -1011,20 +1032,23 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
     }
 
     @Override
-    public void onPreUnload(ReloadAware.PreUnloadReason reason) {
+    public CompletionStage<Void> commitReload(ReloadAware.PreUnloadReason reason) {
+        preservePendingBlockDrops();
+        papiLifecycleActive = false;
         teardownPapi();
         if (IrisToolbelt.isServerStopping()) {
             quiesceRuntimeForServerShutdown("pre-unload:" + reason);
             startPostStopFinisher();
             Iris.debug("Pre-unload hook deferred generator teardown until Paper closes its chunk schedulers.");
-            return;
+            return CompletableFuture.completedFuture(null);
         }
         if (alreadyDrained.get()) {
             Iris.debug("Pre-unload hook skipped; Iris already drained.");
-            return;
+            return CompletableFuture.completedFuture(null);
         }
         Iris.debug("BileTools pre-unload hook fired (" + reason + "). Freezing all Iris worlds.");
         drainOnce("pre-unload:" + reason, 45L);
+        return CompletableFuture.completedFuture(null);
     }
 
     /**
@@ -1138,7 +1162,7 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
             if (generator == null) {
                 continue;
             }
-            IrisToolbelt.beginWorldMaintenance(world, reason, true);
+            IrisToolbelt.beginWorldMaintenance(world, reason);
             if (!deferredShutdownGenerators.contains(generator)) {
                 deferredShutdownGenerators.add(generator);
             }
@@ -1150,52 +1174,32 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
         if (!postStopFinisherStarted.compareAndSet(false, true)) {
             return;
         }
-        Thread activeServerThread = serverLifecycleThread;
-        if (activeServerThread == null) {
-            Iris.warn("Iris could not start its post-stop runtime finisher because the server lifecycle thread is unavailable.");
-            return;
-        }
-
-        Thread finisher = new Thread(() -> {
-            if (!awaitServerThreadTermination(activeServerThread)) {
-                return;
-            }
-            finishDeferredRuntimeTeardown("post-server-stop", 30L);
-        }, "Iris-PostStop-Finisher");
+        Thread finisher = new Thread(() -> finishRuntimeAfterServerShutdown("post-server-stop"),
+                "Iris-PostStop-Finisher");
         finisher.setDaemon(false);
         finisher.start();
     }
 
-    static boolean awaitServerThreadTermination(Thread serverThread) {
-        if (serverThread == null || serverThread == Thread.currentThread()) {
-            return false;
-        }
-        try {
-            serverThread.join();
-            return true;
-        } catch (InterruptedException e) {
-            Thread.currentThread().interrupt();
-            Iris.reportError("Iris post-stop runtime finisher was interrupted.", e);
-            return false;
-        }
-    }
-
     private void runShutdownHook() {
         if (startupBoundaryRestart.get()) {
             finishDeferredRuntimeTeardown("startup-boundary-restart-hook", 30L);
             return;
         }
+        finishRuntimeAfterServerShutdown("shutdown-hook");
+    }
+
+    private void finishRuntimeAfterServerShutdown(String reason) {
         if (!awaitServerShutdownBoundary()) {
-            SHUTDOWN_ERRORS.println("[Iris] Paper did not reach its post-world-close boundary; retaining the runtime and plugin class loader until JVM exit.");
+            SHUTDOWN_ERRORS.println("[Iris] The server did not reach its post-world-close boundary; retaining the runtime and plugin class loader until JVM exit.");
             return;
         }
-        finishDeferredRuntimeTeardown("shutdown-hook", 30L);
+        finishDeferredRuntimeTeardown(reason, 30L);
     }
 
     private boolean awaitServerShutdownBoundary() {
         ServerShutdownBoundary boundary = serverShutdownBoundary;
         if (boundary == null) {
-            return true;
+            return false;
         }
         try {
             return boundary.await(
@@ -1259,6 +1263,20 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
                 && preservation.hasActiveResources();
     }
 
+    private void preservePendingBlockDrops() {
+        for (World world : Bukkit.getWorlds()) {
+            PlatformChunkGenerator generator = IrisToolbelt.access(world);
+            if (generator != null && generator.getEngine() != null
+                    && generator.getEngine().getWorldManager() instanceof IrisWorldManager manager) {
+                manager.flushPendingBlockDropsAsync().whenComplete((ignored, failure) -> {
+                    if (failure != null) {
+                        Iris.reportError("Failed to preserve pending block loot before Iris teardown.", failure);
+                    }
+                });
+            }
+        }
+    }
+
     private void drainWorldGenerators(String reason, long timeoutSeconds) {
         List<World> irisWorlds = new ArrayList<>();
         List<PlatformChunkGenerator> generators = new ArrayList<>();
@@ -1313,8 +1331,23 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
         }
     }
 
-    private void setupPapi() {
-        if (!PlaceholderRegistration.isPlaceholderApiEnabled()) {
+    @EventHandler
+    public void onPlaceholderApiEnable(PluginEnableEvent event) {
+        if ("PlaceholderAPI".equals(event.getPlugin().getName())) {
+            setupPapi();
+        }
+    }
+
+    @EventHandler
+    public void onPlaceholderApiDisable(PluginDisableEvent event) {
+        if ("PlaceholderAPI".equals(event.getPlugin().getName())) {
+            teardownPapi();
+        }
+    }
+
+    private synchronized void setupPapi() {
+        if (!papiLifecycleActive || papiRegistration != null
+                || !PlaceholderRegistration.isPlaceholderApiEnabled()) {
             return;
         }
 
@@ -1341,7 +1374,7 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
         papiRegistration = registration;
     }
 
-    private void teardownPapi() {
+    private synchronized void teardownPapi() {
         IrisPapiListener listener = papiListener;
         papiListener = null;
 
@@ -1453,12 +1486,15 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
     public int getIrisVersion() {
         String input = getDescription().getVersion();
         int hyphenIndex = input.indexOf('-');
-        if (hyphenIndex != -1) {
-            String result = input.substring(0, hyphenIndex);
-            result = result.replaceAll("\\.", "");
-            return Integer.parseInt(result);
+        String release = hyphenIndex < 0 ? input : input.substring(0, hyphenIndex);
+        if (!release.matches("[0-9]+(?:\\.[0-9]+)*")) {
+            return -1;
+        }
+        try {
+            return Integer.parseInt(release.replace(".", ""));
+        } catch (NumberFormatException invalid) {
+            return -1;
         }
-        return -1;
     }
 
     public int getMCVersion() {

adapters/bukkit/plugin/src/main/java/art/arcane/iris/command/CommandFind.java

@@ -25,6 +25,8 @@ import art.arcane.iris.localization.IrisLanguage;
 import art.arcane.iris.pack.datapack.DatapackIngestService;
 import art.arcane.iris.studio.object.ObjectStudioSaveService;
 import art.arcane.iris.generation.runtime.Engine;
+import art.arcane.iris.generation.locator.SubterrainLocator;
+import art.arcane.iris.generation.subterrain.IrisSubterrainFamily;
 import art.arcane.iris.structure.placement.IrisStructureLocator;
 import art.arcane.iris.structure.nativegen.NativeStructureGenerationPolicy;
 import art.arcane.iris.structure.placement.StructureReachability;
@@ -72,7 +74,7 @@ import java.util.Set;
 
 @Director(name = "find", origin = DirectorOrigin.PLAYER, description = "Iris Find commands", descriptionKey = "iris.director.commandfind.director.iris_find_commands", aliases = "goto")
 public class CommandFind implements DirectorExecutor {
-    @Director(description = "Find a biome", descriptionKey = "iris.director.commandfind.director.find_biome")
+    @Director(description = "Find a biome", sync = true, descriptionKey = "iris.director.commandfind.director.find_biome")
     public void biome(
             @Param(description = "The biome to look for", descriptionKey = "iris.director.commandfind.param.biome_look", customHandler = ReachableBiomeHandler.class)
             IrisBiome biome,
@@ -89,6 +91,78 @@ public class CommandFind implements DirectorExecutor {
         EngineBukkitOps.gotoBiome(e, biome, player(), teleport);
     }
 
+    @Director(description = "Find an authored underground feature by id or geometry family", sync = true)
+    public void subterrain(
+            @Param(description = "Feature definition id or family: tectonic_fault, cenote, lava_tube, travertine_terraces")
+            String feature,
+            @Param(description = "Search radius in blocks", defaultValue = "8192")
+            int radius,
+            @Param(description = "Should you be teleported", defaultValue = "true")
+            boolean teleport
+    ) {
+        String key = feature.trim();
+        IrisSubterrainFamily family = null;
+        try {
+            family = IrisSubterrainFamily.valueOf(key.toUpperCase(Locale.ROOT).replace('-', '_'));
+        } catch (IllegalArgumentException ignored) {
+        }
+        locateSubterrain(new SubterrainLocator.Query(family == null ? key : "", family, ""), radius, teleport);
+    }
+
+    @Director(name = "underground-biome", description = "Find a bounded authored underground biome", sync = true)
+    public void undergroundBiome(
+            @Param(description = "The underground biome to look for", customHandler = ReachableBiomeHandler.class)
+            IrisBiome biome,
+            @Param(description = "Search radius in blocks", defaultValue = "8192")
+            int radius,
+            @Param(description = "Should you be teleported", defaultValue = "true")
+            boolean teleport
+    ) {
+        locateSubterrain(new SubterrainLocator.Query("", null, biome.getLoadKey()), radius, teleport);
+    }
+
+    private void locateSubterrain(SubterrainLocator.Query query, int radius, boolean teleport) {
+        Engine activeEngine = engine();
+        VolmitSender commandSender = sender();
+        Player target = player();
+        if (activeEngine == null || commandSender == null || target == null) {
+            if (commandSender != null) {
+                commandSender.sendMessage(C.RED + "Run this command from an Iris world.");
+            }
+            return;
+        }
+        if (radius < 0 || radius > 32768) {
+            commandSender.sendMessage(C.RED + "Search radius must be between 0 and 32768 blocks.");
+            return;
+        }
+        Location origin = target.getLocation();
+        World world = origin.getWorld();
+        commandSender.sendMessage(C.GRAY + "Searching authored underground plans...");
+        J.a(() -> {
+            try {
+                SubterrainLocator.Result found = GenerationSemanticQueries.nearestSubterrain(activeEngine, query,
+                        origin.getBlockX(), origin.getBlockY(), origin.getBlockZ(), radius).orElse(null);
+                if (found == null) {
+                    sendStructureMessage(target, commandSender,
+                            C.YELLOW + "No matching authored underground volume found within " + radius + " blocks.");
+                    return;
+                }
+                String label = found.family().name().toLowerCase(Locale.ROOT) + " " + found.featureId();
+                if (!teleport) {
+                    sendStructureMessage(target, commandSender, C.GREEN + "Found " + label + " at "
+                            + found.x() + ", " + found.y() + ", " + found.z() + ".");
+                    return;
+                }
+                prepareStructureTeleport(target, world, commandSender, label,
+                        new Location(world, found.x(), found.y(), found.z()), true);
+            } catch (Throwable error) {
+                sendStructureMessage(target, commandSender,
+                        C.RED + "Could not locate authored underground volume: " + error.getMessage());
+                Iris.reportError("Could not locate authored underground volume.", error);
+            }
+        });
+    }
+
     @Director(description = "Find a region", descriptionKey = "iris.director.commandfind.director.find_region")
     public void region(
             @Param(description = "The region to look for", descriptionKey = "iris.director.commandfind.param.region_look", customHandler = ReachableRegionHandler.class)

adapters/bukkit/plugin/src/main/java/art/arcane/iris/command/CommandPack.java

@@ -18,6 +18,8 @@
 
 package art.arcane.iris.command;
 
+import art.arcane.iris.pack.PackFingerprints;
+
 import art.arcane.iris.Iris;
 import art.arcane.iris.pack.validation.PackCompatReport;
 import art.arcane.iris.pack.PackDirectoryResolver;
@@ -174,7 +176,6 @@ public class CommandPack implements DirectorExecutor {
                 s.sendMessage(IrisLanguage.text(BukkitRuntimeMessages.COMMAND_PACK_NO_CLEANUP_CANDIDATES_FOUND_PACK, MessageArgument.untrusted("pack", String.valueOf(pack))));
                 return;
             }
-            PackValidationRegistry.remove(packFolder.getName());
             s.sendMessage(IrisLanguage.text(BukkitRuntimeMessages.COMMAND_PACK_QUARANTINED_CLEANUP_CANDIDATE_S_UNDER, MessageArgument.untrusted("size", String.valueOf(result.quarantinedPaths().size())), MessageArgument.untrusted("quarantinePath", String.valueOf(result.quarantinePath()))));
             reportPaths(s, result.quarantinedPaths(), BukkitRuntimeMessages.COMMAND_PACK_PATH_QUARANTINED);
             return;
@@ -230,7 +231,6 @@ public class CommandPack implements DirectorExecutor {
                 s.sendMessage(IrisLanguage.text(BukkitRuntimeMessages.COMMAND_PACK_NOTHING_RESTORE_PACK, MessageArgument.untrusted("pack", String.valueOf(pack))));
                 return;
             }
-            PackValidationRegistry.remove(packFolder.getName());
             s.sendMessage(IrisLanguage.text(BukkitRuntimeMessages.COMMAND_PACK_RESTORED_FILE_S_FROM, MessageArgument.untrusted("size", String.valueOf(result.restoredPaths().size())), MessageArgument.untrusted("dumpPath", String.valueOf(result.dumpPath()))));
             reportPaths(s, result.restoredPaths(), BukkitRuntimeMessages.COMMAND_PACK_PATH_RESTORED);
             return;
@@ -363,47 +363,79 @@ public class CommandPack implements DirectorExecutor {
         return persisted == null || persisted.isBlank() ? "unknown" : persisted;
     }
 
-    private PackValidationResult runValidate(VolmitSender s, File packFolder) {
+    PackValidationResult runValidate(VolmitSender s, File packFolder) {
+        PackValidationRegistry.ValidationTicket ticket =
+                PackValidationRegistry.tryBeginValidation(packFolder.toPath());
+        PackValidationResult result;
+        String contentFingerprint = "";
+        String contextFingerprint = "";
         try {
-            PackValidationResult result = PackValidator.validate(packFolder);
-            PackValidationRegistry.publish(result);
-            reportResult(s, result);
-            return result;
+            if (ticket == null) {
+                throw new IllegalStateException("Pack content is currently being changed.");
+            }
+            contentFingerprint = PackFingerprints.computePackTreeFingerprint(packFolder);
+            contextFingerprint = PackValidationCache.contextFingerprint();
+            result = PackValidator.validate(packFolder);
+            if (!contentFingerprint.equals(PackFingerprints.computePackTreeFingerprint(packFolder))
+                    || !contextFingerprint.equals(PackValidationCache.contextFingerprint())) {
+                throw new IllegalStateException("Pack content or validation context changed during validation.");
+            }
         } catch (Throwable e) {
             Iris.reportError("Pack validation failed for '" + packFolder.getName() + "'", e);
             String detail = e.getMessage() == null || e.getMessage().isBlank()
                     ? e.getClass().getSimpleName()
                     : e.getMessage();
-            PackValidationResult result = new PackValidationResult(
+            result = new PackValidationResult(
                     packFolder.getName(),
                     List.of("Pack validation failed with " + e.getClass().getSimpleName() + ": " + detail),
                     List.of(),
                     System.currentTimeMillis());
-            PackValidationRegistry.publish(result);
-            reportResult(s, result);
-            return result;
+            contentFingerprint = "";
+            contextFingerprint = "";
         }
+        if (PackValidationRegistry.publishIfCurrent(ticket, result, contentFingerprint, contextFingerprint)) {
+            PackValidationRegistry.publish(result);
+        } else {
+            result = new PackValidationResult(packFolder.getName(),
+                    List.of("Pack content changed during validation."), List.of(), System.currentTimeMillis());
+        }
+        reportResult(s, result);
+        return result;
     }
 
     private void persistValidationCache(File packsRoot) {
-        List<File> packDirectories = PackDirectoryResolver.listVisiblePackDirectories(packsRoot);
-        List<PackValidationResult> results = new ArrayList<>(packDirectories.size());
-        for (File packDirectory : packDirectories) {
-            PackValidationResult result = PackValidationRegistry.get(packDirectory.getName());
-            if (result == null) {
-                // The boot cache only loads when it covers every pack, so a partial write is
-                // pointless - but say so instead of silently skipping the persist forever.
-                Iris.warn("Pack validation cache not written: \"" + packDirectory.getName()
-                        + "\" has no registered result. Run /iris pack validate all to repopulate it.");
+        try {
+            String contextFingerprint = PackValidationCache.contextFingerprint();
+            PackFingerprints.PackContentSnapshot snapshot = PackFingerprints.computePackContentSnapshot(packsRoot);
+            List<File> packDirectories = PackDirectoryResolver.listVisiblePackDirectories(packsRoot);
+            List<PackValidationResult> results = new ArrayList<>(packDirectories.size());
+            for (File packDirectory : packDirectories) {
+                PackValidationResult result = PackValidationRegistry.getMatching(
+                        packDirectory.toPath(), snapshot.packContents().get(packDirectory.getName()));
+                if (result == null) {
+                    Iris.warn("Pack validation cache not written: \"" + packDirectory.getName()
+                            + "\" has no validation matching its current content. Run /iris pack validate to refresh it.");
+                    return;
+                }
+                results.add(result);
+            }
+            if (!snapshot.content().equals(PackFingerprints.computePackContentSnapshot(packsRoot).content())
+                    || !contextFingerprint.equals(PackValidationCache.contextFingerprint())) {
+                Iris.warn("Pack validation cache not written because pack content or validation context changed.");
                 return;
             }
-            results.add(result);
-        }
-        try {
+            for (int index = 0; index < packDirectories.size(); index++) {
+                File packDirectory = packDirectories.get(index);
+                if (PackValidationRegistry.getMatching(packDirectory.toPath(),
+                        snapshot.packContents().get(packDirectory.getName())) != results.get(index)) {
+                    Iris.warn("Pack validation cache not written because validation changed during persistence.");
+                    return;
+                }
+            }
             PackValidationCache.save(
                     Iris.instance.getDataFile("cache", "pack-validation.json").toPath(),
-                    PackValidationCache.contentFingerprint(packsRoot),
-                    PackValidationCache.contextFingerprint(),
+                    snapshot.content(),
+                    contextFingerprint,
                     results);
         } catch (IOException | RuntimeException e) {
             Iris.reportError("Could not persist refreshed pack-validation results", e);

adapters/bukkit/plugin/src/main/java/art/arcane/iris/command/CommandStudio.java

@@ -81,7 +81,6 @@ import org.bukkit.FluidCollisionMode;
 import org.bukkit.Location;
 import org.bukkit.World;
 import org.bukkit.entity.Player;
-import org.bukkit.event.inventory.InventoryType;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.util.Vector;
 
@@ -309,23 +308,33 @@ public class CommandStudio implements DirectorExecutor {
         O<Integer> ta = new O<>();
         ta.set(-1);
 
-        var sender = sender();
-        var player = player();
-        var engine = engine();
+        VolmitSender sender = sender();
+        Player player = player();
+        Engine engine = engine();
 
-        ta.set(J.sr(() ->
-        {
-            if (!player.getOpenInventory().getType().equals(InventoryType.CHEST)) {
+        ta.set(J.sr(() -> {
+            if (!J.runEntity(player, () -> {
+                if (player.getOpenInventory().getTopInventory() != inv) {
+                    J.csr(ta.get());
+                    sender.sendMessage(IrisLanguage.text(BukkitCommandMessages.COMMAND_STUDIO_OPENED_INVENTORY));
+                    return;
+                }
+                if (!add) {
+                    inv.clear();
+                }
+                Location location = player.getLocation();
+                try {
+                    EngineBukkitOps.addItems(engine, true, inv, tables, InventorySlotType.STORAGE,
+                            location.getWorld(), location.getBlockX(), location.getBlockY(), location.getBlockZ());
+                } catch (RuntimeException | Error failure) {
+                    J.csr(ta.get());
+                    Iris.reportError(failure);
+                    sender.sendMessage(IrisLanguage.text(BukkitCommandMessagesExtended.COMMAND_STUDIO_CANNOT_ADD_ITEMS_VIRTUAL_INVENTORY_BECAUSE,
+                            MessageArgument.untrusted("value", String.valueOf(failure.getMessage()))));
+                }
+            }, 0, () -> J.csr(ta.get()))) {
                 J.csr(ta.get());
-                sender.sendMessage(IrisLanguage.text(BukkitCommandMessages.COMMAND_STUDIO_OPENED_INVENTORY));
-                return;
             }
-
-            if (!add) {
-                inv.clear();
-            }
-
-            EngineBukkitOps.addItems(engine, true, inv, tables, InventorySlotType.STORAGE, player.getWorld(), player.getLocation().getBlockX(), player.getLocation().getBlockY(), player.getLocation().getBlockZ());
         }, fast ? 5 : 35));
 
         sender().sendMessage(IrisLanguage.text(BukkitCommandMessagesExtended.COMMAND_STUDIO_OPENING_INVENTORY_NOW));

adapters/bukkit/plugin/src/main/java/art/arcane/iris/integration/IrisIntegrationService.java

@@ -6,6 +6,7 @@ import art.arcane.iris.generation.runtime.IrisTelemetrySnapshot;
 import art.arcane.iris.Iris;
 import art.arcane.iris.generation.runtime.EngineTelemetrySnapshot;
 import art.arcane.iris.spi.IrisServices;
+import art.arcane.iris.world.task.J;
 import art.arcane.iris.platform.bukkit.plugin.IrisService;
 import art.arcane.volmlib.integration.IntegrationHandshakeRequest;
 import art.arcane.volmlib.integration.IntegrationHandshakeResponse;
@@ -13,6 +14,9 @@ import art.arcane.volmlib.integration.IntegrationHeartbeat;
 import art.arcane.volmlib.integration.IntegrationMetricDescriptor;
 import art.arcane.volmlib.integration.IntegrationMetricGroup;
 import art.arcane.volmlib.integration.IntegrationMetricSample;
+import art.arcane.volmlib.integration.IntegrationMetricPublisher;
+import art.arcane.volmlib.integration.IntegrationMetricSnapshot;
+import art.arcane.volmlib.integration.IntegrationSnapshotProvider;
 import art.arcane.volmlib.integration.IntegrationMetricSchema;
 import art.arcane.volmlib.integration.IntegrationProtocolNegotiator;
 import art.arcane.volmlib.integration.IntegrationProtocolVersion;
@@ -30,7 +34,7 @@ import java.util.Optional;
 import java.util.Set;
 import java.util.function.Supplier;
 
-public class IrisIntegrationService implements IrisService, IntegrationServiceContract {
+public class IrisIntegrationService implements IrisService, IntegrationSnapshotProvider {
     private static final IntegrationProtocolVersion CURRENT_PROTOCOL = new IntegrationProtocolVersion(1, 2);
     private static final Set<IntegrationProtocolVersion> SUPPORTED_PROTOCOLS = Set.of(
             new IntegrationProtocolVersion(1, 0),
@@ -41,6 +45,7 @@ public class IrisIntegrationService implements IrisService, IntegrationServiceCo
             "handshake",
             "heartbeat",
             "metrics",
+            IntegrationSnapshotProvider.CAPABILITY,
             "metric-groups",
             "iris-engine-metrics",
             "iris-world-metrics"
@@ -63,6 +68,9 @@ public class IrisIntegrationService implements IrisService, IntegrationServiceCo
     );
 
     private final Supplier<IrisTelemetrySnapshot> telemetrySupplier;
+    private final IntegrationMetricPublisher snapshots = new IntegrationMetricPublisher(
+            IntegrationMetricSchema.irisKeys().size(), 30_000L);
+    private int snapshotTaskId = -1;
 
     public IrisIntegrationService() {
         this(IrisIntegrationService::currentTelemetry);
@@ -77,11 +85,17 @@ public class IrisIntegrationService implements IrisService, IntegrationServiceCo
     @Override
     public void onEnable() {
         Bukkit.getServicesManager().register(IntegrationServiceContract.class, this, Iris.instance, ServicePriority.Normal);
+        snapshotTaskId = J.ar(this::publishSnapshots, 20);
         Iris.verbose("Integration provider registered for Iris");
     }
 
     @Override
     public void onDisable() {
+        if (snapshotTaskId != -1) {
+            J.car(snapshotTaskId);
+            snapshotTaskId = -1;
+        }
+        snapshots.clear();
         Bukkit.getServicesManager().unregister(IntegrationServiceContract.class, this);
     }
 
@@ -188,6 +202,20 @@ public class IrisIntegrationService implements IrisService, IntegrationServiceCo
         return Map.copyOf(selected);
     }
 
+    @Override
+    public IntegrationMetricSnapshot snapshotMetrics(Set<String> metricKeys) {
+        return snapshots.snapshotMetrics(metricKeys, System.currentTimeMillis());
+    }
+
+    void publishSnapshots() {
+        IntegrationMetricPublisher.Demand demand = snapshots.demandedKeys(System.currentTimeMillis());
+        if (demand.keys().isEmpty()) {
+            return;
+        }
+        Map<String, IntegrationMetricSample> samples = sampleMetrics(demand.keys());
+        snapshots.publish(demand, System.currentTimeMillis(), samples);
+    }
+
     @Override
     public List<IntegrationMetricGroup> metricGroups() {
         IrisTelemetrySnapshot snapshot = safeSnapshot();

adapters/bukkit/plugin/src/main/java/art/arcane/iris/update/IrisUpdateNotifier.java

@@ -0,0 +1,37 @@
+package art.arcane.iris.update;
+
+import art.arcane.iris.configuration.IrisSettings;
+import art.arcane.volmlib.util.update.BukkitUpdateService;
+import org.bukkit.plugin.Plugin;
+
+import java.util.function.Consumer;
+
+public final class IrisUpdateNotifier implements AutoCloseable {
+    private final Consumer<IrisSettings> settingsListener = this::reconfigure;
+    private final BukkitUpdateService updates;
+    private volatile boolean enabled;
+    private boolean closed;
+
+    public IrisUpdateNotifier(Plugin plugin) {
+        enabled = IrisSettings.get().getGeneral().isUpdateNotifications();
+        updates = BukkitUpdateService.register(plugin, new BukkitUpdateService.Options(
+                "VolmitSoftware", "Iris", "iris.update", () -> enabled));
+        IrisSettings.addSettingsListener(settingsListener);
+        reconfigure(IrisSettings.get());
+    }
+
+    private synchronized void reconfigure(IrisSettings settings) {
+        if (closed) {
+            return;
+        }
+        enabled = settings.getGeneral().isUpdateNotifications();
+        updates.reconfigure();
+    }
+
+    @Override
+    public synchronized void close() {
+        closed = true;
+        IrisSettings.removeSettingsListener(settingsListener);
+        updates.close();
+    }
+}

adapters/bukkit/plugin/src/main/java/art/arcane/iris/world/IrisWorldGeneratorResolver.java

@@ -18,8 +18,9 @@
 
 package art.arcane.iris.world;
 
+import art.arcane.iris.pack.PackFingerprints;
+
 import art.arcane.iris.configuration.IrisSettings;
-import art.arcane.iris.pack.datapack.ServerConfigurator;
 
 import art.arcane.iris.Iris;
 import art.arcane.iris.world.lifecycle.WorldLifecycleStaging;
@@ -184,12 +185,12 @@ public final class IrisWorldGeneratorResolver {
         }
         List<String> packNames = packDirs.stream().map(File::getName).sorted().toList();
         Path cacheFile = IrisPlatforms.get().dataFile("cache", "pack-validation.json").toPath();
-        ServerConfigurator.PackContentSnapshot contentSnapshot =
-                new ServerConfigurator.PackContentSnapshot("", Map.of());
+        PackFingerprints.PackContentSnapshot contentSnapshot =
+                new PackFingerprints.PackContentSnapshot("", Map.of());
         String contextFingerprint = "";
         Optional<List<PackValidationResult>> cached = Optional.empty();
         try {
-            contentSnapshot = ServerConfigurator.computePackContentSnapshot(packsRoot);
+            contentSnapshot = PackFingerprints.computePackContentSnapshot(packsRoot);
             contextFingerprint = PackValidationCache.contextFingerprint();
             if (!externalContentChanged) {
                 cached = PackValidationCache.load(
@@ -274,19 +275,19 @@ public final class IrisWorldGeneratorResolver {
     private static FreshValidation validateStablePacks(
             File packsRoot,
             List<File> initialPackDirs,
-            ServerConfigurator.PackContentSnapshot initialSnapshot
+            PackFingerprints.PackContentSnapshot initialSnapshot
     ) {
         List<File> packDirs = initialPackDirs;
-        ServerConfigurator.PackContentSnapshot before = initialSnapshot;
+        PackFingerprints.PackContentSnapshot before = initialSnapshot;
         for (int attempt = 0; attempt < VALIDATION_STABILITY_ATTEMPTS; attempt++) {
             List<String> packNames = packDirs.stream().map(File::getName).sorted().toList();
             List<PackValidationResult> results = validatePacks(packDirs);
-            ServerConfigurator.PackContentSnapshot after;
+            PackFingerprints.PackContentSnapshot after;
             try {
-                after = ServerConfigurator.computePackContentSnapshot(packsRoot);
+                after = PackFingerprints.computePackContentSnapshot(packsRoot);
             } catch (RuntimeException exception) {
                 Iris.reportError("Could not verify Iris pack bytes after validation", exception);
-                after = new ServerConfigurator.PackContentSnapshot("", Map.of());
+                after = new PackFingerprints.PackContentSnapshot("", Map.of());
             }
             List<File> afterPackDirs = PackDirectoryResolver.listVisiblePackDirectories(packsRoot);
             List<String> afterPackNames = afterPackDirs.stream().map(File::getName).sorted().toList();
@@ -895,14 +896,10 @@ public final class IrisWorldGeneratorResolver {
     }
 
     private static String dimensionTypeKey(IrisData data, IrisDimension dimension) {
-        return IrisPlatforms.get()
-                .registries()
-                .generationRegistry()
-                .dimensionTypeResourceKey(
-                        data.getDataFolder().getName(),
-                        dimension.getLoadKey(),
-                        dimension.getDimensionTypeKey()
-                );
+        return dimension.dimensionTypeResourceKey(
+                IrisPlatforms.get().registries().generationRegistry(),
+                data.getDataFolder().getName()
+        );
     }
 
     private record LoadedHistory(GenerationHistory history, File activePack) {
@@ -923,7 +920,7 @@ public final class IrisWorldGeneratorResolver {
 
     private record FreshValidation(
             List<File> packDirs,
-            ServerConfigurator.PackContentSnapshot contentSnapshot,
+            PackFingerprints.PackContentSnapshot contentSnapshot,
             List<PackValidationResult> results,
             boolean stable
     ) {

adapters/bukkit/plugin/src/main/java/art/arcane/iris/world/tree/RoutedBlockBreakEvent.java

@@ -3,19 +3,33 @@ package art.arcane.iris.world.tree;
 import org.bukkit.block.Block;
 import org.bukkit.entity.Player;
 import org.bukkit.event.block.BlockBreakEvent;
+import org.bukkit.inventory.ItemStack;
+
+import java.util.Collection;
+import java.util.Objects;
 
 final class RoutedBlockBreakEvent extends BlockBreakEvent implements BlockDropRouter {
     private final TreeFellerSVC service;
     private final FellingRun run;
+    private final ItemStack tool;
 
-    RoutedBlockBreakEvent(Block block, Player player, FellingRun run, TreeFellerSVC service) {
-        super(block, player);
-        this.run = run;
-        this.service = service;
+    RoutedBlockBreakEvent(Options options) {
+        super(options.block(), options.player());
+        run = options.run();
+        service = options.service();
+        tool = Objects.requireNonNull(options.tool(), "tool").clone();
+    }
+
+    @Override
+    public Collection<ItemStack> captureNativeDrops() {
+        return getBlock().getDrops(tool);
     }
 
     @Override
     public boolean routeDrop(Object drop) {
         return service.isServiceEnabled() && run.presentation.routeDrop(drop);
     }
+
+    record Options(Block block, Player player, FellingRun run, TreeFellerSVC service, ItemStack tool) {
+    }
 }

adapters/bukkit/plugin/src/main/java/art/arcane/iris/world/tree/TreeFellingRunner.java

@@ -387,7 +387,8 @@ final class TreeFellingRunner {
             return;
         }
 
-        BlockBreakEvent probe = new RoutedBlockBreakEvent(block, run.candidate.player(), run, service);
+        BlockBreakEvent probe = new RoutedBlockBreakEvent(new RoutedBlockBreakEvent.Options(
+                block, run.candidate.player(), run, service, reservation.toolForDrops()));
         service.managedEvents.add(probe);
         try {
             Bukkit.getPluginManager().callEvent(probe);

adapters/bukkit/plugin/src/main/resources/paper-plugin.yml

@@ -10,6 +10,9 @@ authors: [ cyberpwn, NextdoorPsycho, Vatuu ]
 website: VolmitSoftware.com
 description: More than a Dimension!
 permissions:
+  iris.update:
+    description: Allows viewing Iris updates in VolmLib's combined update reports.
+    default: op
   iris.debugdump:
     description: Allows creating and optionally uploading diagnostic reports.
     default: op
@@ -25,34 +28,26 @@ permissions:
 dependencies:
   server:
     PlaceholderAPI:
-      load: BEFORE
+      load: OMIT
       required: false
       join-classpath: true
     CraftEngine:
-      load: BEFORE
+      load: OMIT
       required: false
       join-classpath: true
     Nexo:
-      load: BEFORE
+      load: OMIT
       required: false
       join-classpath: true
     Oraxen:
-      load: BEFORE
+      load: OMIT
       required: false
       join-classpath: true
     ItemsAdder:
-      load: BEFORE
+      load: OMIT
       required: false
       join-classpath: true
     SCore:
-      load: BEFORE
-      required: false
-      join-classpath: true
-    ExecutableItems:
-      load: BEFORE
-      required: false
-      join-classpath: false
-    MythicLib:
       load: OMIT
       required: false
       join-classpath: true
@@ -61,11 +56,7 @@ dependencies:
       required: false
       join-classpath: true
     eco:
-      load: BEFORE
-      required: false
-      join-classpath: true
-    EcoItems:
-      load: BEFORE
+      load: OMIT
       required: false
       join-classpath: true
     MythicMobs:
@@ -77,7 +68,7 @@ dependencies:
       required: false
       join-classpath: true
     KGenerators:
-      load: BEFORE
+      load: OMIT
       required: false
       join-classpath: true
     Multiverse-Core:
@@ -85,6 +76,6 @@ dependencies:
       required: false
       join-classpath: true
     WorldEdit:
-      load: BEFORE
+      load: OMIT
       required: false
       join-classpath: true

adapters/bukkit/plugin/src/main/resources/plugin.yml

@@ -3,18 +3,6 @@ version: ${version}
 main: ${main}
 folia-supported: true
 load: STARTUP
-softdepend:
-  - PlaceholderAPI
-  - CraftEngine
-  - Nexo
-  - Oraxen
-  - ItemsAdder
-  - SCore
-  - ExecutableItems
-  - eco
-  - EcoItems
-  - KGenerators
-  - WorldEdit
 loadbefore: [ Multiverse-Core ]
 authors: [ cyberpwn, NextdoorPsycho, Vatuu ]
 website: VolmitSoftware.com
@@ -23,6 +11,9 @@ commands:
   iris:
     aliases: [ ir, irs ]
 permissions:
+  iris.update:
+    description: Allows viewing Iris updates in VolmLib's combined update reports.
+    default: op
   iris.debugdump:
     description: Allows creating and optionally uploading diagnostic reports.
     default: op

adapters/bukkit/plugin/src/test/gameplay/decorator-pack/biomes/flat.json

@@ -0,0 +1,47 @@
+{
+  "name": "Flat",
+  "derivative": "minecraft:plains",
+  "vanillaDerivative": "minecraft:plains",
+  "layers": [
+    {
+      "minHeight": 1,
+      "maxHeight": 1,
+      "palette": [
+        {
+          "block": "minecraft:lime_wool"
+        }
+      ]
+    },
+    {
+      "minHeight": 384,
+      "maxHeight": 384,
+      "palette": [
+        {
+          "block": "minecraft:green_concrete"
+        }
+      ]
+    }
+  ],
+  "generators": [
+    {
+      "generator": "flat",
+      "min": 96,
+      "max": 96
+    }
+  ],
+  "decorators": [
+    {
+      "palette": [
+        {
+          "block": "minecraft:oak_stairs",
+          "data": {
+            "half": "bottom",
+            "facing": "north"
+          }
+        }
+      ],
+      "chance": 1,
+      "forcePlace": true
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/decorator-pack/dimensions/decorator-fixture.json

@@ -0,0 +1,28 @@
+{
+  "name": "Decorator Fixture",
+  "version": 1,
+  "mode": {
+    "type": "OVERWORLD"
+  },
+  "regions": [
+    "flat"
+  ],
+  "focusRegion": "flat",
+  "focus": "flat",
+  "landChance": 1,
+  "environment": "NORMAL",
+  "dimensionHeight": {
+    "min": -64,
+    "max": 320
+  },
+  "logicalHeight": 384,
+  "fluidHeight": 0,
+  "bedrock": false,
+  "rockPalette": {
+    "palette": [
+      {
+        "block": "minecraft:red_concrete"
+      }
+    ]
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/decorator-pack/generators/flat.json

@@ -0,0 +1,15 @@
+{
+  "interpolator": {
+    "function": "NONE",
+    "horizontalScale": 1
+  },
+  "seed": 310,
+  "composite": [
+    {
+      "seed": 310,
+      "style": {
+        "style": "FLAT"
+      }
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/decorator-pack/regions/flat.json

@@ -0,0 +1,12 @@
+{
+  "name": "Flat",
+  "landBiomes": [
+    "flat"
+  ],
+  "seaBiomes": [
+    "flat"
+  ],
+  "shoreBiomes": [
+    "flat"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/decorators.mjs

@@ -0,0 +1,40 @@
+import { readFile } from 'node:fs/promises'
+import path from 'node:path'
+
+export default {
+  name: 'iris-decorators',
+  description: 'Verify authored stair decorations occupy one block and retain their half state.',
+  async run(context) {
+    const source = await readFile(path.join(context.server.directory, '.server-source'), 'utf8')
+    context.expect(/^isolated=true\s*$/m.test(source), 'Decorator generation requires an isolated instance')
+    await context.step('create a world with authored stair decorations', async () => {
+      const response = await context.command('/iris create name=decorator_probe type=decorator-fixture seed=78264193',
+        /Successfully created your world|Failed to create/, 180000)
+      context.expect(response.includes('Successfully created your world'), response)
+    })
+    await context.step('client sees single bottom-half stair decorations', async () => {
+      let checked = 0
+      await context.waitUntil(() => {
+        checked = 0
+        const center = context.bot.entity.position.floored()
+        for (let x = -6; x <= 6; x++) {
+          for (let z = -6; z <= 6; z++) {
+            for (let y = -4; y <= 1; y++) {
+              const position = center.offset(x, y, z)
+              if (context.bot.blockAt(position)?.name !== 'lime_wool') continue
+              const decoration = context.bot.blockAt(position.offset(0, 1, 0))
+              const above = context.bot.blockAt(position.offset(0, 2, 0))
+              if (!decoration || !above) return false
+              if (decoration.name !== 'oak_stairs' || decoration.getProperties().half !== 'bottom'
+                || above.name !== 'air') return false
+              checked++
+            }
+          }
+        }
+        return checked >= 100
+      }, { label: 'At least 100 authored stair columns with empty space above', timeoutMs: 60000, intervalMs: 250 })
+      context.expect(checked >= 100, 'Client verified generated decorator columns', { checked })
+      context.report.decoratorColumns = checked
+    })
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/native-lifecycle-fixture/resources/plugin.yml

@@ -2,6 +2,7 @@ name: IrisNativeLifecycleFixture
 version: 1.0.0
 main: art.arcane.iris.fixture.NativeLifecycleFixture
 api-version: '26.1.2'
+folia-supported: true
 depend: [Iris]
 commands:
   irislifecycle:

adapters/bukkit/plugin/src/test/gameplay/native-lifecycle-fixture/src/art/arcane/iris/fixture/NativeLifecycleFixture.java

@@ -1,11 +1,31 @@
 package art.arcane.iris.fixture;
 
+import art.arcane.iris.Iris;
 import art.arcane.volmlib.nativelib.NativeAdapters;
 import art.arcane.iris.world.runtime.RuntimeInjection;
+import art.arcane.iris.generation.runtime.Engine;
+import art.arcane.iris.structure.placement.IrisStructureLocator;
 import art.arcane.iris.world.IrisCreator;
+import art.arcane.iris.world.task.J;
 import art.arcane.iris.world.IrisToolbelt;
+import art.arcane.iris.world.IrisWorldStorage;
+import art.arcane.iris.world.WorldCreatorCompat;
+import art.arcane.iris.world.lifecycle.LifecycleOperationCoordinator;
+import art.arcane.iris.platform.bootstrap.ServerProperties;
+import org.bukkit.Location;
+import org.bukkit.entity.Player;
+import org.bukkit.configuration.file.YamlConfiguration;
 import org.bukkit.Material;
 import org.bukkit.block.Biome;
+import org.bukkit.block.Container;
+import org.bukkit.loot.Lootable;
+import org.bukkit.loot.LootTable;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.MapMeta;
+import org.bukkit.map.MapView;
+import org.bukkit.generator.structure.Structure;
+import org.bukkit.util.StructureSearchResult;
 import art.arcane.volmlib.nativelib.terrain.NativeTerrainAccess;
 import art.arcane.volmlib.nativelib.terrain.NativeStructureReader;
 import art.arcane.volmlib.nativelib.terrain.NativeWorldRuntime;
@@ -19,6 +39,10 @@ import org.bukkit.command.CommandSender;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.plugin.java.JavaPlugin;
 
+import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.LinkOption;
+import java.nio.file.Path;
 import java.util.concurrent.CompletableFuture;
 import java.util.List;
 import java.util.logging.Level;
@@ -26,12 +50,16 @@ import java.util.logging.Level;
 public final class NativeLifecycleFixture extends JavaPlugin implements WorldRuntimeExecution {
     private static final NamespacedKey WORLD_KEY = NamespacedKey.minecraft("native_lifecycle_probe");
     private static final NamespacedKey TERRAIN_KEY = new NamespacedKey("iris", "native_terrain_probe");
+    private static final NamespacedKey COMMAND_KEY = new NamespacedKey("iris", "lifecycle_probe");
+    private static final NamespacedKey TREASURE_KEY = new NamespacedKey("iris", "treasure_map_probe");
     private static final long WORLD_SEED = 78264193L;
     private NativeWorldRuntime runtime;
+    private TreasureLootChecks treasureLootChecks;
 
     @Override
     public void onEnable() {
         runtime = NativeAdapters.require(NativeWorldRuntime.class);
+        treasureLootChecks = new TreasureLootChecks(this);
         NativeTerrainAccess terrain = NativeAdapters.require(NativeTerrainAccess.class);
         getLogger().info("Native lifecycle ready: " + runtime.description()
                 + "; terrain provider=" + terrain.getClass().getName());
@@ -44,18 +72,40 @@ public final class NativeLifecycleFixture extends JavaPlugin implements WorldRun
 
     @Override
     public boolean onCommand(CommandSender sender, Command command, String label, String[] arguments) {
-        if (arguments.length != 1) {
-            sender.sendMessage("Use /irislifecycle create|unload|status|structures|terrain-create|terrain-check|terrain-unload");
+        if (arguments.length == 0) {
+            sender.sendMessage("Use /irislifecycle create|unload|status|structures|terrain-create|terrain-check|terrain-unload|lifecycle-status|lifecycle-entry");
             return true;
         }
         try {
             switch (arguments[0]) {
+                case "treasure-map-create" -> createTreasureMapWorld(sender);
+                case "treasure-map-limit" -> runTreasureRegion(sender, () -> checkTreasureMapLimit(sender));
+                case "treasure-map-chest" -> {
+                    if (arguments.length != 3) {
+                        throw new IllegalArgumentException("Use treasure-map-chest <destination> <CHEST|COPPER_CHEST>");
+                    }
+                    runTreasureRegion(sender, () -> prepareTreasureMapChest(sender, arguments[1], arguments[2]));
+                }
+                case "treasure-map-inspect" -> {
+                    if (arguments.length != 2) {
+                        throw new IllegalArgumentException("Use treasure-map-inspect <destination>");
+                    }
+                    runTreasureRegion(sender, () -> inspectTreasureMapChest(sender, arguments[1]));
+                }
+                case "treasure-map-check" -> runTreasureRegion(sender, () -> verifyTreasureMapLoot(sender));
+                case "treasure-extra-check" -> runTreasureRegion(sender, () -> treasureLootChecks.verify(sender));
+                case "treasure-region-check" -> runTreasureRegion(sender, () -> treasureLootChecks.verifyRegion(sender));
+                case "treasure-reload-before" -> runTreasureRegion(sender, () -> treasureLootChecks.verifyReload(sender, false));
+                case "treasure-reload-after" -> runTreasureRegion(sender, () -> treasureLootChecks.verifyReload(sender, true));
+                case "treasure-resources" -> treasureLootChecks.reportResourceReloads(sender);
                 case "create" -> create(sender);
                 case "unload" -> unload(sender);
                 case "structures" -> structures(sender);
                 case "terrain-create" -> createTerrain(sender);
                 case "terrain-check" -> checkTerrain(sender);
                 case "terrain-unload" -> unloadTerrain(sender);
+                case "lifecycle-status" -> lifecycleStatus(sender);
+                case "lifecycle-entry" -> lifecycleEntry(sender);
                 case "status" -> sender.sendMessage("NATIVE_STATUS available=" + runtime.available()
                         + " loaded=" + (Bukkit.getWorld(WORLD_KEY) != null));
                 default -> throw new IllegalArgumentException("Unknown lifecycle operation");
@@ -66,6 +116,232 @@ public final class NativeLifecycleFixture extends JavaPlugin implements WorldRun
         return true;
     }
 
+    private void createTreasureMapWorld(CommandSender sender) {
+        if (!(sender instanceof Player player)) {
+            throw new IllegalStateException("Treasure map fixture requires a player");
+        }
+        runTreasureRegion(sender, () -> prepareTreasureMapWorld(player));
+    }
+
+    private void runTreasureRegion(CommandSender sender, Runnable task) {
+        ensureTreasureMapWorld()
+                .thenCompose(ignored -> J.runRegionFuture(Bukkit.getWorld(TREASURE_KEY), 0, 0, task))
+                .whenComplete((ignored, failure) -> {
+                    if (failure != null) {
+                        fail(sender, failure);
+                    }
+                });
+    }
+
+    private CompletableFuture<?> ensureTreasureMapWorld() {
+        if (Bukkit.getWorld(TREASURE_KEY) != null) {
+            return CompletableFuture.completedFuture(null);
+        }
+        if (WorldCreatorCompat.persistentLevelRoot(TREASURE_KEY).exists()) {
+            return Iris.instance.worldReconciler().loadWorld(ServerProperties.BUKKIT_YML, TREASURE_KEY.toString());
+        }
+        return runAsync(() -> {
+            try {
+                new IrisCreator().name(TREASURE_KEY.toString()).dimension("treasure-map-fixture")
+                        .seed(WORLD_SEED).create();
+            } catch (Exception failure) {
+                throw new IllegalStateException("Treasure map fixture creation failed", failure);
+            }
+        });
+    }
+
+    private void prepareTreasureMapWorld(Player player) {
+        World world = Bukkit.getWorld(TREASURE_KEY);
+        if (world == null || !IrisToolbelt.isIrisWorld(world) || world.getSeed() != WORLD_SEED
+                || !"treasure-map-fixture".equals(IrisToolbelt.access(world).getEngine().getDimension().getLoadKey())) {
+            throw new IllegalStateException("Treasure map fixture world identity is invalid");
+        }
+        for (int x = 0; x <= 8; x++) {
+            for (int z = 0; z <= 8; z++) {
+                world.getBlockAt(x, 160, z).setType(Material.STONE, false);
+                for (int y = 161; y <= 164; y++) {
+                    world.getBlockAt(x, y, z).setType(Material.AIR, false);
+                }
+            }
+        }
+        if (!J.runEntity(player, () -> player.teleportAsync(new Location(world, 0.5, 161, 0.5)).whenComplete((teleported, failure) -> {
+            if (failure != null) {
+                fail(player, failure);
+            } else if (!Boolean.TRUE.equals(teleported)) {
+                fail(player, new IllegalStateException("Treasure map fixture teleport failed"));
+            } else {
+                player.sendMessage("TREASURE_MAP_READY world=" + TREASURE_KEY
+                        + " version=" + Bukkit.getMinecraftVersion() + " folia=" + J.isFolia());
+            }
+        }))) {
+            throw new IllegalStateException("Could not schedule treasure map fixture teleport");
+        }
+    }
+
+    private void checkTreasureMapLimit(CommandSender sender) {
+        World world = Bukkit.getWorld(TREASURE_KEY);
+        if (world == null) {
+            throw new IllegalStateException("Treasure map fixture world is absent");
+        }
+        Engine engine = IrisToolbelt.access(world).getEngine();
+        IrisStructureLocator.LocateResult located = IrisStructureLocator.locateInPlacementRings(
+                engine, "minecraft:buried_treasure", 2, 2, 50, (x, z) -> true);
+        if (located.status() != IrisStructureLocator.LocateStatus.SEARCH_LIMIT_REACHED) {
+            throw new IllegalStateException("Blocked treasure placement returned " + located.status());
+        }
+        sender.sendMessage("TREASURE_MAP_LIMIT status=" + located.status());
+    }
+
+    private void prepareTreasureMapChest(CommandSender sender, String destination, String material) {
+        World world = Bukkit.getWorld(TREASURE_KEY);
+        treasureMapChest(world, destination, material);
+        sender.sendMessage("TREASURE_MAP_CHEST destination=" + destination + " material=" + material);
+    }
+
+    private Container treasureMapChest(World world, String destination, String material) {
+        requireTreasureDestination(destination);
+        if (!List.of("CHEST", "COPPER_CHEST").contains(material)) {
+            throw new IllegalArgumentException("Unknown treasure map container: " + material);
+        }
+        LootTable loot = Bukkit.getLootTable(new NamespacedKey("iris_qa", destination));
+        if (loot == null) {
+            throw new IllegalStateException("Treasure map loot table is absent: " + destination);
+        }
+        world.getBlockAt(2, 161, 2).setType(Material.AIR, false);
+        world.getBlockAt(2, 161, 2).setType(Material.valueOf(material), false);
+        Container chest = (Container) world.getBlockAt(2, 161, 2).getState();
+        ((Lootable) chest).setLootTable(loot);
+        ((Lootable) chest).setSeed(WORLD_SEED);
+        if (!chest.update(true, false)) {
+            throw new IllegalStateException("Treasure map loot chest was not installed");
+        }
+        return (Container) world.getBlockAt(2, 161, 2).getState();
+    }
+
+    private void verifyTreasureMapLoot(CommandSender sender) {
+        checkTreasureMapLimit(sender);
+        World world = Bukkit.getWorld(TREASURE_KEY);
+        for (String destination : List.of("blocked", "disabled", "found", "mixed")) {
+            Inventory inventory = treasureMapChest(world, destination, "CHEST").getInventory();
+            inspectTreasureMapChest(sender, destination);
+            inventory.remove(Material.DIAMOND);
+            Inventory reopened = ((Container) world.getBlockAt(2, 161, 2).getState()).getInventory();
+            if (reopened.contains(Material.DIAMOND)
+                    || !(reopened.contains(Material.FILLED_MAP) || reopened.contains(Material.MAP))) {
+                throw new IllegalStateException("Reopening changed " + destination + " chest loot");
+            }
+        }
+        sender.sendMessage("TREASURE_MAP_CHECK destinations=4 retained=true");
+    }
+
+    private void inspectTreasureMapChest(CommandSender sender, String destination) {
+        requireTreasureDestination(destination);
+        World world = Bukkit.getWorld(TREASURE_KEY);
+        Inventory inventory = ((Container) world.getBlockAt(2, 161, 2).getState()).getInventory();
+        ItemStack map = null;
+        int diamonds = 0;
+        for (ItemStack item : inventory.getContents()) {
+            if (item == null) {
+                continue;
+            }
+            if ((item.getType() == Material.MAP || item.getType() == Material.FILLED_MAP)
+                    && item.getAmount() == 1 && map == null) {
+                map = item;
+            } else if (item.getType() == Material.DIAMOND) {
+                diamonds += item.getAmount();
+            } else {
+                throw new IllegalStateException("Unexpected chest loot: " + item);
+            }
+        }
+        if (map == null || diamonds != 1) {
+            throw new IllegalStateException("Invalid " + destination + " chest: map=" + map + " diamonds=" + diamonds);
+        }
+        boolean expectedLocated = destination.equals("found") || destination.equals("mixed");
+        MapView view = map.getItemMeta() instanceof MapMeta meta && meta.hasMapView() ? meta.getMapView() : null;
+        if ((view != null) != expectedLocated) {
+            throw new IllegalStateException("Unexpected map data for " + destination + ": " + map);
+        }
+        String result = "TREASURE_MAP_INSPECT destination=" + destination + " diamonds=1 located=" + expectedLocated;
+        if (view != null) {
+            StructureSearchResult target = world.locateNearestStructure(
+                    new Location(world, 2, 161, 2), Structure.DESERT_PYRAMID, 50, false);
+            if (target == null || target.getStructure() != Structure.DESERT_PYRAMID) {
+                throw new IllegalStateException("Map has no verified pyramid target");
+            }
+            int targetX = target.getLocation().getBlockX();
+            int targetZ = target.getLocation().getBlockZ();
+            if (view.getWorld() != world || view.getScale() != MapView.Scale.CLOSEST
+                    || view.getCenterX() != Math.floorDiv(targetX + 64, 128) * 128
+                    || view.getCenterZ() != Math.floorDiv(targetZ + 64, 128) * 128) {
+                throw new IllegalStateException("Map data does not cover the verified pyramid at " + target.getLocation());
+            }
+            result += " mapId=" + view.getId() + " targetX=" + targetX + " targetZ=" + targetZ
+                    + " centerX=" + view.getCenterX() + " centerZ=" + view.getCenterZ();
+        }
+        sender.sendMessage(result);
+    }
+
+    private void requireTreasureDestination(String destination) {
+        if (!List.of("blocked", "disabled", "found", "mixed").contains(destination)) {
+            throw new IllegalArgumentException("Unknown treasure map destination: " + destination);
+        }
+    }
+
+    private void lifecycleStatus(CommandSender sender) throws Exception {
+        World world = Bukkit.getWorld(COMMAND_KEY);
+        Path storage = WorldCreatorCompat.persistentLevelRoot(COMMAND_KEY).toPath();
+        Path levelRoot = IrisWorldStorage.levelRoot().toPath();
+        Path registry = levelRoot.resolve("iris/worlds.json");
+        boolean registered = Files.exists(registry)
+                && Files.readString(registry).contains("\"" + COMMAND_KEY + "\"");
+        String startupName = IrisWorldStorage.configuredWorldName(COMMAND_KEY, levelRoot.getFileName().toString());
+        YamlConfiguration configuration = YamlConfiguration.loadConfiguration(ServerProperties.BUKKIT_YML);
+        boolean configured = configuration.getConfigurationSection("worlds") != null
+                && configuration.getConfigurationSection("worlds").contains(startupName);
+        File quarantineRoot = levelRoot.resolve("dimensions/iris").toFile();
+        File[] quarantines = quarantineRoot.listFiles((directory, name) -> name.startsWith(".iris-delete-"));
+        int quarantineCount = quarantines == null ? 0 : quarantines.length;
+        Path queueFile = Bukkit.getPluginManager().getPlugin("Iris").getDataFolder().toPath()
+                .resolve("pending-world-deletes.txt");
+        List<String> queue = Files.exists(queueFile) ? Files.readAllLines(queueFile) : List.of();
+        boolean queued = quarantineCount > 0;
+        if (quarantines != null) {
+            for (File quarantine : quarantines) {
+                queued &= queue.contains(quarantine.getName());
+            }
+        }
+        boolean disk = Files.exists(storage, LinkOption.NOFOLLOW_LINKS);
+        String cleanup = disk ? "present" : quarantineCount == 0 ? "deleted" : queued ? "queued" : "unsafe";
+        boolean idle = true;
+        LifecycleOperationCoordinator coordinator = LifecycleOperationCoordinator.get();
+        for (LifecycleOperationCoordinator.Domain domain : LifecycleOperationCoordinator.Domain.values()) {
+            idle &= coordinator.active(domain).isEmpty();
+        }
+        sender.sendMessage("IRIS_LIFECYCLE loaded=" + (world != null) + " registered=" + registered
+                + " configured=" + configured + " disk=" + disk + " quarantines=" + quarantineCount
+                + " cleanup=" + cleanup + " idle=" + idle);
+    }
+
+    private void lifecycleEntry(CommandSender sender) {
+        if (!(sender instanceof Player player)) {
+            throw new IllegalArgumentException("Lifecycle entry requires a player");
+        }
+        World world = Bukkit.getWorld(COMMAND_KEY);
+        if (world == null || player.getWorld() != world || world.getSeed() != WORLD_SEED
+                || !IrisToolbelt.isIrisWorld(world)) {
+            throw new IllegalStateException("Player did not enter the requested seeded Iris world");
+        }
+        Location feet = player.getLocation();
+        Material floor = world.getBlockAt(feet.getBlockX(), feet.getBlockY() - 1, feet.getBlockZ()).getType();
+        if (floor != Material.LIME_WOOL || !floor.isSolid()
+                || !world.getBlockAt(feet.getBlockX(), feet.getBlockY(), feet.getBlockZ()).isPassable()
+                || !world.getBlockAt(feet.getBlockX(), feet.getBlockY() + 1, feet.getBlockZ()).isPassable()) {
+            throw new IllegalStateException("Lifecycle player entry lacks a safe fixture floor");
+        }
+        sender.sendMessage("IRIS_LIFECYCLE_ENTRY world=" + COMMAND_KEY + " seed=" + world.getSeed()
+                + " floor=lime_wool safe=true");
+    }
+
     private void create(CommandSender sender) throws ReflectiveOperationException {
         if (!runtime.available() || Bukkit.getWorld(WORLD_KEY) != null) {
             throw new IllegalStateException("Native runtime unavailable or probe world already loaded");
@@ -124,6 +400,7 @@ public final class NativeLifecycleFixture extends JavaPlugin implements WorldRun
                         int y = world.getHighestBlockYAt(x, z);
                         if (y < 90 || y > 100 || world.getBlockAt(x, y, z).getType() != Material.LIME_WOOL
                                 || world.getBlockAt(x, y - 3, z).getType() != Material.GREEN_CONCRETE
+                                || world.getBlockAt(x, world.getMinHeight(), z).getType() != Material.GREEN_CONCRETE
                                 || world.getBiome(x, y, z) != Biome.PLAINS) {
                             throw new IllegalStateException("Terrain column differs at " + x + "," + y + "," + z
                                     + ": " + world.getBlockAt(x, y, z).getType());
@@ -212,11 +489,11 @@ public final class NativeLifecycleFixture extends JavaPlugin implements WorldRun
     }
 
     public boolean regionized() {
-        return false;
+        return J.isFolia();
     }
 
     public boolean primaryThread() {
-        return Bukkit.isPrimaryThread();
+        return J.isFolia() ? Bukkit.isGlobalTickThread() : Bukkit.isPrimaryThread();
     }
 
     public CompletableFuture<Void> runGlobal(Runnable task) {
@@ -229,10 +506,10 @@ public final class NativeLifecycleFixture extends JavaPlugin implements WorldRun
                 result.completeExceptionally(failure);
             }
         };
-        if (Bukkit.isPrimaryThread()) {
+        if (primaryThread()) {
             wrapped.run();
-        } else {
-            Bukkit.getScheduler().runTask(this, wrapped);
+        } else if (!J.runGlobal(wrapped)) {
+            result.completeExceptionally(new IllegalStateException("Could not schedule fixture task"));
         }
         return result;
     }

adapters/bukkit/plugin/src/test/gameplay/native-lifecycle-fixture/src/art/arcane/iris/fixture/TreasureLootChecks.java

@@ -0,0 +1,259 @@
+package art.arcane.iris.fixture;
+
+import art.arcane.iris.generation.runtime.Engine;
+import art.arcane.iris.platform.bukkit.BukkitBlockResolution;
+import art.arcane.iris.platform.generation.EngineBukkitOps;
+import art.arcane.iris.world.IrisToolbelt;
+import art.arcane.iris.world.loot.InventorySlotType;
+import art.arcane.iris.world.loot.IrisVanillaLootTable;
+import art.arcane.iris.world.loot.IrisLootTable;
+import art.arcane.volmlib.util.collection.KList;
+import art.arcane.volmlib.util.mantle.runtime.MantleChunk;
+import art.arcane.iris.world.task.J;
+import art.arcane.volmlib.util.matter.Matter;
+import io.papermc.paper.event.world.StructuresLocateEvent;
+import io.papermc.paper.event.server.ServerResourcesReloadedEvent;
+import io.papermc.paper.math.Position;
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
+import org.bukkit.World;
+import org.bukkit.block.Block;
+import org.bukkit.block.Container;
+import org.bukkit.block.Chest;
+import org.bukkit.command.CommandSender;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.world.LootGenerateEvent;
+import org.bukkit.generator.structure.Structure;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.plugin.java.JavaPlugin;
+import org.bukkit.util.StructureSearchResult;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Proxy;
+import java.util.Collection;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public final class TreasureLootChecks implements Listener {
+    private static final NamespacedKey WORLD_KEY = new NamespacedKey("iris", "treasure_map_probe");
+    private static final List<String> CHESTS = List.of(
+            "CHEST", "COPPER_CHEST", "EXPOSED_COPPER_CHEST", "WEATHERED_COPPER_CHEST",
+            "OXIDIZED_COPPER_CHEST", "WAXED_COPPER_CHEST", "WAXED_EXPOSED_COPPER_CHEST",
+            "WAXED_WEATHERED_COPPER_CHEST", "WAXED_OXIDIZED_COPPER_CHEST");
+    private final IrisVanillaLootTable reloadTable = new IrisVanillaLootTable("iris_qa:reload");
+    private final AtomicInteger resourceReloads = new AtomicInteger();
+    private LocateAction locateAction = LocateAction.PASS;
+    private int locateEvents;
+    private int lootEvents;
+    private boolean lootEventsOwned = true;
+
+    public TreasureLootChecks(JavaPlugin plugin) {
+        Bukkit.getPluginManager().registerEvents(this, plugin);
+    }
+
+    public void verify(CommandSender sender) {
+        World world = requireWorld();
+        verifyCopperLoot(world);
+        sender.sendMessage("TREASURE_COPPER_LOOT variants=8 normal=true diamonds=1");
+        verifyInventoryRollback(world);
+        sender.sendMessage("TREASURE_LOOT_ROLLBACK contents=true nativeTable=true seed=true retry=true");
+        verifyLocateEvents(world);
+        sender.sendMessage("TREASURE_LOCATE_EVENTS cancelled=true replaced=true calls=2");
+        sender.sendMessage("TREASURE_EXTRA_CHECK variants=9 rollback=true locateEvents=true");
+    }
+
+    public void verifyRegion(CommandSender sender) {
+        World world = requireWorld();
+        if (!J.isOwnedByCurrentRegion(world, 0, 0)) {
+            throw new IllegalStateException("Fixture does not own its loot region");
+        }
+        lootEvents = 0;
+        lootEventsOwned = true;
+        verifyCopperLoot(world);
+        if (lootEvents != CHESTS.size() || !lootEventsOwned) {
+            throw new IllegalStateException("Loot event ownership failed: count=" + lootEvents
+                    + " owned=" + lootEventsOwned);
+        }
+        sender.sendMessage("TREASURE_REGION_LOOT copper=8 normal=1 events=" + lootEvents
+                + " owned=true folia=" + J.isFolia());
+    }
+
+    @EventHandler
+    public void onLoot(LootGenerateEvent event) {
+        if (event.getWorld().getKey().equals(WORLD_KEY) && event.isPlugin()) {
+            Location origin = event.getLootContext().getLocation();
+            lootEvents++;
+            lootEventsOwned &= J.isOwnedByCurrentRegion(event.getWorld(),
+                    origin.getBlockX() >> 4, origin.getBlockZ() >> 4);
+        }
+    }
+
+    public void verifyReload(CommandSender sender, boolean reloaded) {
+        World world = requireWorld();
+        Material expected = reloaded ? Material.EMERALD : Material.DIAMOND;
+        Collection<ItemStack> items = reloadTable.getLoot(
+                false, 783L, InventorySlotType.STORAGE, world, 2, 161, 2);
+        if (items.size() != 1 || items.iterator().next().getType() != expected) {
+            throw new IllegalStateException("Reloaded loot did not contain " + expected + ": " + items);
+        }
+        sender.sendMessage("TREASURE_RELOAD material=" + expected);
+    }
+
+    public void reportResourceReloads(CommandSender sender) {
+        sender.sendMessage("TREASURE_RESOURCES revision=" + resourceReloads.get());
+    }
+
+    @EventHandler
+    public void onResourcesReloaded(ServerResourcesReloadedEvent event) {
+        resourceReloads.incrementAndGet();
+    }
+
+    @EventHandler
+    public void onLocate(StructuresLocateEvent event) {
+        if (!event.getWorld().getKey().equals(WORLD_KEY) || locateAction == LocateAction.PASS) {
+            return;
+        }
+        locateEvents++;
+        if (locateAction == LocateAction.CANCEL) {
+            event.setCancelled(true);
+        } else {
+            event.setResult(new StructuresLocateEvent.Result(Position.block(123, 100, 456), Structure.DESERT_PYRAMID));
+        }
+    }
+
+    private void verifyCopperLoot(World world) {
+        Engine engine = IrisToolbelt.access(world).getEngine();
+        Block block = world.getBlockAt(4, 161, 4);
+        MantleChunk<Matter> mantle = engine.getMantle().getMantle().useChunk(block.getChunk());
+        try {
+            for (String name : CHESTS) {
+                block.setType(Material.AIR, false);
+                block.setType(Material.valueOf(name), false);
+                if (!BukkitBlockResolution.isStorageChest(block.getBlockData())) {
+                    throw new IllegalStateException("Chest is excluded from Iris loot: " + name);
+                }
+                EngineBukkitOps.update(engine, 4, 161, 4, block.getChunk(), mantle);
+                Container chest = (Container) block.getState();
+                int diamonds = 0;
+                for (ItemStack item : chest.getInventory().getContents()) {
+                    if (item == null) {
+                        continue;
+                    }
+                    if (item.getType() != Material.DIAMOND) {
+                        throw new IllegalStateException("Unexpected " + name + " loot: " + item);
+                    }
+                    diamonds += item.getAmount();
+                }
+                if (diamonds != 1) {
+                    throw new IllegalStateException(name + " contains " + diamonds + " diamonds");
+                }
+            }
+        } finally {
+            mantle.release();
+        }
+    }
+
+    private void verifyInventoryRollback(World world) {
+        Engine engine = IrisToolbelt.access(world).getEngine();
+        Block block = world.getBlockAt(6, 161, 4);
+        block.setType(Material.AIR, false);
+        block.setType(Material.CHEST, false);
+        Chest chest = (Chest) block.getState();
+        chest.getBlockInventory().setItem(0, new ItemStack(Material.EMERALD, 3));
+        chest = (Chest) block.getState();
+        NamespacedKey key = new NamespacedKey("iris_qa", "reload");
+        chest.setLootTable(Bukkit.getLootTable(key));
+        chest.setSeed(913L);
+        if (!chest.update(true, false)) {
+            throw new IllegalStateException("Could not set native loot for rollback check");
+        }
+        Inventory inventory = chest.getBlockInventory();
+        IllegalStateException injected = new IllegalStateException("Fixture insertion interruption");
+        Inventory interrupted = (Inventory) Proxy.newProxyInstance(Inventory.class.getClassLoader(),
+                new Class<?>[]{Inventory.class}, (proxy, method, arguments) -> {
+                    Object result;
+                    try {
+                        result = method.invoke(inventory, arguments);
+                    } catch (InvocationTargetException failure) {
+                        throw failure.getCause();
+                    }
+                    if (method.getName().equals("addItem")) {
+                        throw injected;
+                    }
+                    return result;
+                });
+        KList<IrisLootTable> tables = new KList<>();
+        tables.add(new IrisVanillaLootTable("iris_qa:reload"));
+        try {
+            EngineBukkitOps.addItems(engine, false, interrupted, tables, InventorySlotType.STORAGE,
+                    world, 6, 161, 4);
+            throw new IllegalStateException("Interrupted insertion did not fail");
+        } catch (IllegalStateException failure) {
+            if (failure != injected) {
+                throw failure;
+            }
+        }
+        Chest restored = (Chest) block.getState();
+        if (restored.getLootTable() == null || !restored.getLootTable().getKey().equals(key)
+                || restored.getSeed() != 913L) {
+            throw new IllegalStateException("Rollback lost the native loot table or seed");
+        }
+        ItemStack existing = restored.getSnapshotInventory().getItem(0);
+        if (existing == null || existing.getType() != Material.EMERALD || existing.getAmount() != 3) {
+            throw new IllegalStateException("Rollback lost the original contents: " + existing);
+        }
+        EngineBukkitOps.addItems(engine, false, restored.getBlockInventory(), tables, InventorySlotType.STORAGE,
+                world, 6, 161, 4);
+        int diamonds = 0;
+        int emeralds = 0;
+        for (ItemStack item : restored.getBlockInventory().getContents()) {
+            if (item == null) {
+                continue;
+            }
+            if (item.getType() == Material.DIAMOND) {
+                diamonds += item.getAmount();
+            } else if (item.getType() == Material.EMERALD) {
+                emeralds += item.getAmount();
+            }
+        }
+        if (diamonds != 2 || emeralds != 3 || ((Chest) block.getState()).getLootTable() != null) {
+            throw new IllegalStateException("Loot retry failed: diamonds=" + diamonds + " emeralds=" + emeralds);
+        }
+    }
+
+    private void verifyLocateEvents(World world) {
+        Location origin = new Location(world, 2, 161, 2);
+        locateEvents = 0;
+        try {
+            locateAction = LocateAction.CANCEL;
+            if (world.locateNearestStructure(origin, Structure.DESERT_PYRAMID, 50, false) != null) {
+                throw new IllegalStateException("Cancelled structure search returned a target");
+            }
+            locateAction = LocateAction.REPLACE;
+            StructureSearchResult result = world.locateNearestStructure(origin, Structure.DESERT_PYRAMID, 50, false);
+            if (result == null || result.getStructure() != Structure.DESERT_PYRAMID
+                    || result.getLocation().getBlockX() != 123 || result.getLocation().getBlockY() != 100
+                    || result.getLocation().getBlockZ() != 456 || locateEvents != 2) {
+                throw new IllegalStateException("Structure search ignored event result: " + result);
+            }
+        } finally {
+            locateAction = LocateAction.PASS;
+        }
+    }
+
+    private World requireWorld() {
+        World world = Bukkit.getWorld(WORLD_KEY);
+        if (world == null || !IrisToolbelt.isIrisWorld(world)) {
+            throw new IllegalStateException("Treasure map fixture world is absent");
+        }
+        return world;
+    }
+
+    private enum LocateAction {
+        PASS, CANCEL, REPLACE
+    }
+}

adapters/bukkit/plugin/src/test/gameplay/native-terrain-pack/biomes/flat.json

@@ -11,6 +11,15 @@
           "block": "minecraft:lime_wool"
         }
       ]
+    },
+    {
+      "minHeight": 384,
+      "maxHeight": 384,
+      "palette": [
+        {
+          "block": "minecraft:green_concrete"
+        }
+      ]
     }
   ],
   "generators": [

adapters/bukkit/plugin/src/test/gameplay/native-terrain-pack/dimensions/native-terrain.json

@@ -21,7 +21,7 @@
   "rockPalette": {
     "palette": [
       {
-        "block": "minecraft:green_concrete"
+        "block": "minecraft:red_concrete"
       }
     ]
   }

adapters/bukkit/plugin/src/test/gameplay/natural-spawning-fixture/src/art/arcane/iris/fixture/NaturalSpawningFixture.java

@@ -6,6 +6,11 @@ import art.arcane.iris.generation.runtime.BiomeEnvironment;
 import art.arcane.iris.generation.runtime.Engine;
 import art.arcane.iris.world.IrisCreator;
 import art.arcane.iris.world.entity.IrisSpawner;
+import art.arcane.iris.world.entity.IrisMarker;
+import art.arcane.iris.world.entity.EntitySpawnSeed;
+import art.arcane.volmlib.util.mantle.flag.MantleFlag;
+import art.arcane.iris.pack.value.IrisPosition;
+import art.arcane.volmlib.util.math.RNG;
 import art.arcane.iris.world.entity.IrisEntitySpawn;
 import art.arcane.iris.world.entity.IrisEntity;
 import art.arcane.iris.platform.bukkit.BukkitPlatform;
@@ -28,6 +33,7 @@ import org.bukkit.entity.Entity;
 import org.bukkit.entity.EntityType;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
@@ -38,9 +44,13 @@ import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HexFormat;
 import java.util.List;
 import java.util.Map;
 import java.util.TreeMap;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.CompletableFuture;
 import java.util.logging.Level;
 
@@ -83,7 +93,7 @@ public final class NaturalSpawningFixture extends JavaPlugin implements Listener
     @Override
     public boolean onCommand(CommandSender sender, Command command, String label, String[] arguments) {
         if (arguments.length != 1) {
-            notifySender(sender, "Use /irisspawnqa setup|frogs|zombies|stress|check|surface|cave");
+            notifySender(sender, "Use /irisspawnqa setup|frogs|zombies|stress|check|seeded|completion|surface|cave");
             return true;
         }
         try {
@@ -93,6 +103,8 @@ public final class NaturalSpawningFixture extends JavaPlugin implements Listener
                 case "zombies" -> runRegion(sender, () -> spawnZombies(sender));
                 case "stress" -> runRegion(sender, () -> stress(sender));
                 case "check" -> runRegion(sender, () -> check(sender));
+                case "seeded" -> seeded(sender);
+                case "completion" -> completion(sender);
                 case "surface" -> view(sender, 67D);
                 case "cave" -> view(sender, -46D);
                 default -> throw new IllegalArgumentException("Unknown spawning operation");
@@ -147,6 +159,9 @@ public final class NaturalSpawningFixture extends JavaPlugin implements Listener
     private void configureWorld(CommandSender sender, World world) {
         try {
             world.setDifficulty(Difficulty.NORMAL);
+            world.setTime(6000L);
+            world.setStorm(false);
+            world.setThundering(false);
             world.setGameRule(GameRules.SPAWN_MOBS, true);
             List<CompletableFuture<Void>> chunks = new ArrayList<>();
             for (int chunkX = -1; chunkX <= 1; chunkX++) {
@@ -176,6 +191,11 @@ public final class NaturalSpawningFixture extends JavaPlugin implements Listener
             Bukkit.getRegionScheduler().execute(this, world, chunkX, chunkZ, () -> {
                 try {
                     chunk.addPluginChunkTicket(this);
+                    for (Entity entity : chunk.getEntities()) {
+                        if (entity instanceof LivingEntity && !(entity instanceof Player)) {
+                            entity.remove();
+                        }
+                    }
                     retained.complete(null);
                 } catch (Throwable error) {
                     retained.completeExceptionally(error);
@@ -244,12 +264,218 @@ public final class NaturalSpawningFixture extends JavaPlugin implements Listener
         }
     }
 
+    private void completion(CommandSender sender) {
+        World world = requireWorld();
+        Bukkit.getGlobalRegionScheduler().execute(this, () -> {
+            world.setGameRule(GameRules.SPAWN_MOBS, false);
+            runRegion(sender, () -> beginCompletion(sender, world));
+        });
+    }
+
+    private void beginCompletion(CommandSender sender, World world) {
+        try {
+            Engine engine = IrisToolbelt.access(world).getEngine();
+            Object manager = engine.getWorldManager();
+            Field field = manager.getClass().getDeclaredField("chunkMaintenance");
+            field.setAccessible(true);
+            Object maintenance = field.get(manager);
+            Method run = maintenance.getClass().getDeclaredMethod("runInitialSpawn", World.class, int.class, int.class, Runnable.class);
+            run.setAccessible(true);
+            Field pending = maintenance.getClass().getDeclaredField("markerFlagQueue");
+            pending.setAccessible(true);
+            AtomicInteger callbacks = new AtomicInteger();
+            Runnable callback = () -> {
+                require(Bukkit.isOwnedByCurrentRegion(world, 0, 0), "Initial callback ran outside its owning region");
+                callbacks.incrementAndGet();
+                Chunk chunk = world.getChunkAt(0, 0);
+                invokeAmbient(runtimeSpawn(chunk, "seeded"), chunk, true);
+            };
+            run.invoke(maintenance, world, 0, 0, callback);
+            awaitSkippedInitial(sender, world, new CompletionRun(engine, maintenance, run, pending, callback, callbacks), 0);
+        } catch (ReflectiveOperationException failure) {
+            throw new IllegalStateException("Could not start initial completion test", failure);
+        }
+    }
+
+    private void awaitSkippedInitial(CommandSender sender, World world, CompletionRun state, int attempt) {
+        Bukkit.getRegionScheduler().runDelayed(this, world, 0, 0, task -> {
+            try {
+                require(state.callbacks().get() == 0, "Disabled mob spawning consumed the initial pass");
+                if (!((Set<?>) state.pending().get(state.maintenance())).isEmpty()) {
+                    require(attempt < 100, "Skipped initial pass did not release its pending state");
+                    awaitSkippedInitial(sender, world, state, attempt + 1);
+                    return;
+                }
+                Bukkit.getGlobalRegionScheduler().execute(this, () -> {
+                    world.setGameRule(GameRules.SPAWN_MOBS, true);
+                    runRegion(sender, () -> retryInitialCompletion(sender, world, state));
+                });
+            } catch (Throwable failure) {
+                fail(sender, failure);
+            }
+        }, 2L);
+    }
+
+    private void retryInitialCompletion(CommandSender sender, World world, CompletionRun state) {
+        try {
+            state.run().invoke(state.maintenance(), world, 0, 0, state.callback());
+            state.run().invoke(state.maintenance(), world, 0, 0, state.callback());
+            awaitInitialCompletion(sender, world, state, 0);
+        } catch (ReflectiveOperationException failure) {
+            throw new IllegalStateException("Could not retry initial spawning", failure);
+        }
+    }
+
+    private void awaitInitialCompletion(CommandSender sender, World world, CompletionRun state, int attempt) {
+        Bukkit.getRegionScheduler().runDelayed(this, world, 0, 0, task -> {
+            try {
+                if (state.callbacks().get() == 0 || !((Set<?>) state.pending().get(state.maintenance())).isEmpty()) {
+                    require(attempt < 100, "Initial spawning did not complete after retry");
+                    awaitInitialCompletion(sender, world, state, attempt + 1);
+                    return;
+                }
+                require(state.callbacks().get() == 1, "Concurrent initial requests spawned duplicate populations");
+                state.run().invoke(state.maintenance(), world, 0, 0, state.callback());
+                Bukkit.getAsyncScheduler().runNow(this, ignored -> {
+                    try {
+                        require(state.engine().getMantle().getMantle().hasFlag(0, 0, MantleFlag.INITIAL_SPAWNED_MARKER), "Initial completion was not persisted");
+                        require(state.callbacks().get() == 1, "Completed initial pass ran again");
+                        evidence(sender, "SPAWN_QA_COMPLETION retry=true callbacks=1 persisted=true owned=true");
+                    } catch (Throwable failure) {
+                        fail(sender, failure);
+                    }
+                });
+            } catch (Throwable failure) {
+                fail(sender, failure);
+            }
+        }, 2L);
+    }
+
+    private void seeded(CommandSender sender) {
+        requireWorld();
+        List<List<String>> baseline = new ArrayList<>();
+        sampleInitial(0, false).thenCompose(first -> {
+            baseline.add(first);
+            return sampleInitial(1, false);
+        }).thenCompose(second -> {
+            baseline.add(second);
+            return sampleInitial(1, false);
+        }).thenCompose(repeated -> {
+            require(baseline.get(1).equals(repeated), "Second chunk changed after reversed generation order");
+            return sampleInitial(0, false);
+        }).thenCompose(repeated -> {
+            require(baseline.get(0).equals(repeated), "First chunk changed after reversed generation order");
+            return sampleInitial(0, true);
+        }).thenCompose(marker -> {
+            baseline.add(marker);
+            return sampleInitial(1, true);
+        }).thenCompose(marker -> {
+            baseline.add(marker);
+            return sampleInitial(1, true);
+        }).thenCompose(repeated -> {
+            require(baseline.get(3).equals(repeated), "Second marker changed after reversed generation order");
+            return sampleInitial(0, true);
+        }).whenComplete((repeated, failure) -> {
+            if (failure != null) {
+                fail(sender, failure);
+                return;
+            }
+            try {
+                require(baseline.get(2).equals(repeated), "First marker changed after reversed generation order");
+                evidence(sender, "SPAWN_QA_SEEDED chunks=2 markers=2 repeats=2 equipment=true attributes=true");
+            } catch (Throwable error) {
+                fail(sender, error);
+            }
+        });
+    }
+
+    private CompletableFuture<List<String>> sampleInitial(int chunkX, boolean marker) {
+        CompletableFuture<List<String>> result = new CompletableFuture<>();
+        World world = requireWorld();
+        Bukkit.getRegionScheduler().execute(this, world, chunkX, 0, () -> {
+            try {
+                Chunk chunk = world.getChunkAt(chunkX, 0);
+                for (Entity entity : chunk.getEntities()) {
+                    if (entity instanceof LivingEntity && !(entity instanceof Player)) {
+                        entity.remove();
+                    }
+                }
+                for (int x = 0; x < 16; x++) {
+                    for (int z = 0; z < 16; z++) {
+                        chunk.getBlock(x, 64, z).setType(Material.GRASS_BLOCK, false);
+                        for (int y = 65; y <= 68; y++) {
+                            chunk.getBlock(x, y, z).setType(Material.AIR, false);
+                        }
+                    }
+                }
+                RuntimeSpawn spawn = runtimeSpawn(chunk, "seeded");
+                IrisSpawner definition = spawn.environment().data().getSpawnerLoader().load("qa/seeded");
+                require(!definition.canSpawn(spawn.engine(), chunkX, 0), "Ongoing weather/time gate unexpectedly allowed spawning");
+                for (int i = 0; i < 100 + chunkX; i++) {
+                    RNG.r.nextLong();
+                }
+                ambientInvocation.set(true);
+                try {
+                    for (int i = 0; i < 5; i++) {
+                        LivingEntity witness = (LivingEntity) world.spawnEntity(new Location(world, (chunkX << 4) + 8.5, 65, 8.5), EntityType.ZOMBIE);
+                        witness.setCustomName("Population witness");
+                        witness.setAI(false);
+                        witness.setGravity(false);
+                    }
+                } finally {
+                    ambientInvocation.remove();
+                }
+                if (marker) {
+                    invokeInitialMarker(spawn, definition, new IrisPosition((chunkX << 4) + 5, 64, 5));
+                } else {
+                    invokeAmbient(spawn, chunk, true);
+                }
+                List<String> snapshot = new ArrayList<>();
+                for (Entity entity : chunk.getEntities()) {
+                    String name = entity.getCustomName();
+                    if (!(entity instanceof LivingEntity living) || name == null || !name.startsWith("Seeded ")) {
+                        continue;
+                    }
+                    ItemStack hand = living.getEquipment().getItemInMainHand();
+                    ItemStack helmet = living.getEquipment().getHelmet();
+                    require(hand.hasItemMeta() && hand.getItemMeta().hasAttributeModifiers(), "Spawned gear has no authored attributes");
+                    require(helmet != null && helmet.getType() == Material.IRON_HELMET, "Spawned helmet was not authored equipment");
+                    Location at = entity.getLocation();
+                    snapshot.add(entity.getType() + ":" + at.getX() + ":" + at.getY() + ":" + at.getZ()
+                            + ":" + HexFormat.of().formatHex(hand.serializeAsBytes())
+                            + ":" + HexFormat.of().formatHex(helmet.serializeAsBytes()));
+                }
+                require(snapshot.size() >= 2 && snapshot.size() <= 4, "Initial population was blocked by runtime gates or cap: " + snapshot.size());
+                Collections.sort(snapshot);
+                result.complete(List.copyOf(snapshot));
+            } catch (Throwable failure) {
+                result.completeExceptionally(failure);
+            }
+        });
+        return result;
+    }
+
+    private void invokeInitialMarker(RuntimeSpawn spawn, IrisSpawner definition, IrisPosition position) {
+        ambientInvocation.set(true);
+        try (BiomeEnvironment.Scope ignored = spawn.engine().openBiomeEnvironmentScope(spawn.environment())) {
+            Method method = spawn.spawner().getClass().getDeclaredMethod("spawnMarker", IrisPosition.class, IrisSpawner.class, IrisMarker.class, RNG.class, boolean.class);
+            method.setAccessible(true);
+            method.invoke(spawn.spawner(), position, definition, null, EntitySpawnSeed.marker(spawn.engine().getSeedManager().getEntity(), position.getX(), position.getY(), position.getZ()), true);
+        } catch (InvocationTargetException failure) {
+            throw new IllegalStateException("Initial marker spawning failed", failure.getCause());
+        } catch (ReflectiveOperationException failure) {
+            throw new IllegalStateException("Could not invoke initial marker spawning", failure);
+        } finally {
+            ambientInvocation.remove();
+        }
+    }
+
     private void spawnFrogs(CommandSender sender) {
         Chunk chunk = requireWorld().getChunkAt(0, 0);
         RuntimeSpawn spawn = runtimeSpawn(chunk, "frogs");
         getLogger().info(spawnDiagnostics(spawn, chunk));
         for (int attempt = 0; attempt < 12; attempt++) {
-            invokeAmbient(spawn, chunk);
+            invokeAmbient(spawn, chunk, false);
             require(count(chunk, EntityType.FROG) <= FROG_CAPACITY, "Frog batch exceeded its category capacity");
         }
         require(count(chunk, EntityType.FROG) == FROG_CAPACITY,
@@ -266,7 +492,7 @@ public final class NaturalSpawningFixture extends JavaPlugin implements Listener
         require(count(chunk, EntityType.ZOMBIE) == 0, "Cave phase already ran");
         RuntimeSpawn spawn = runtimeSpawn(chunk, "cave-zombies");
         getLogger().info(spawnDiagnostics(spawn, chunk));
-        invokeAmbient(spawn, chunk);
+        invokeAmbient(spawn, chunk, false);
         firstZombieBatch = count(chunk, EntityType.ZOMBIE);
         require(firstZombieBatch == ZOMBIE_CAPACITY,
                 "Authored seven-zombie batch was not clamped to capacity two: " + spawnDiagnostics(spawn, chunk));
@@ -280,7 +506,7 @@ public final class NaturalSpawningFixture extends JavaPlugin implements Listener
         Chunk chunk = requireWorld().getChunkAt(0, 0);
         RuntimeSpawn spawn = runtimeSpawn(chunk, "cave-zombies");
         for (int attempt = 0; attempt < 50; attempt++) {
-            invokeAmbient(spawn, chunk);
+            invokeAmbient(spawn, chunk, false);
             require(count(chunk, EntityType.ZOMBIE) == ZOMBIE_CAPACITY, "Saturated zombie category exceeded capacity");
         }
         evidence(sender, "SPAWN_QA_STRESS attempts=50 zombies=" + count(chunk, EntityType.ZOMBIE));
@@ -371,10 +597,10 @@ public final class NaturalSpawningFixture extends JavaPlugin implements Listener
         return diagnostics.toString();
     }
 
-    private void invokeAmbient(RuntimeSpawn spawn, Chunk chunk) {
+    private void invokeAmbient(RuntimeSpawn spawn, Chunk chunk, boolean initial) {
         ambientInvocation.set(true);
         try (BiomeEnvironment.Scope ignored = spawn.engine().openBiomeEnvironmentScope(spawn.environment())) {
-            spawn.method().invoke(spawn.spawner(), chunk, false, spawn.environment());
+            spawn.method().invoke(spawn.spawner(), chunk, initial, spawn.environment());
         } catch (InvocationTargetException failure) {
             throw new IllegalStateException("Iris ambient spawning failed", failure.getCause());
         } catch (ReflectiveOperationException failure) {
@@ -467,6 +693,9 @@ public final class NaturalSpawningFixture extends JavaPlugin implements Listener
         }
     }
 
+    private record CompletionRun(Engine engine, Object maintenance, Method run, Field pending, Runnable callback, AtomicInteger callbacks) {
+    }
+
     private record RuntimeSpawn(Engine engine, Object spawner, Method method, BiomeEnvironment environment) {
     }
 }

adapters/bukkit/plugin/src/test/gameplay/natural-spawning-pack/biomes/seeded.json

@@ -0,0 +1,26 @@
+{
+  "name": "Seeded population",
+  "derivative": "minecraft:plains",
+  "vanillaDerivative": "minecraft:plains",
+  "layers": [
+    {
+      "minHeight": 1,
+      "maxHeight": 1,
+      "palette": [
+        {
+          "block": "minecraft:grass_block"
+        }
+      ]
+    }
+  ],
+  "generators": [
+    {
+      "generator": "flat",
+      "min": 64,
+      "max": 64
+    }
+  ],
+  "entitySpawners": [
+    "qa/seeded"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/natural-spawning-pack/entities/qa/seeded-husk.json

@@ -0,0 +1,29 @@
+{
+  "type": "minecraft:husk",
+  "reason": "NATURAL",
+  "surface": "LAND",
+  "ai": false,
+  "aware": false,
+  "gravity": false,
+  "customName": "Seeded husk",
+  "invulnerable": true,
+  "helmet": {
+    "type": "IRON_HELMET",
+    "minDurability": 0.1,
+    "maxDurability": 0.9
+  },
+  "mainHand": {
+    "type": "IRON_SWORD",
+    "minDurability": 0.1,
+    "maxDurability": 0.9,
+    "attributes": [
+      {
+        "name": "seeded_damage",
+        "attribute": "minecraft:attack_damage",
+        "minAmount": 1.25,
+        "maxAmount": 6.75,
+        "chance": 1
+      }
+    ]
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/natural-spawning-pack/entities/qa/seeded-zombie.json

@@ -0,0 +1,29 @@
+{
+  "type": "minecraft:zombie",
+  "reason": "NATURAL",
+  "surface": "LAND",
+  "ai": false,
+  "aware": false,
+  "gravity": false,
+  "customName": "Seeded zombie",
+  "invulnerable": true,
+  "helmet": {
+    "type": "IRON_HELMET",
+    "minDurability": 0.1,
+    "maxDurability": 0.9
+  },
+  "mainHand": {
+    "type": "IRON_SWORD",
+    "minDurability": 0.1,
+    "maxDurability": 0.9,
+    "attributes": [
+      {
+        "name": "seeded_damage",
+        "attribute": "minecraft:attack_damage",
+        "minAmount": 1.25,
+        "maxAmount": 6.75,
+        "chance": 1
+      }
+    ]
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/natural-spawning-pack/spawners/qa/seeded.json

@@ -0,0 +1,33 @@
+{
+  "group": "NORMAL",
+  "maxEntitiesPerChunk": 4,
+  "allowedLightLevels": {
+    "min": 0,
+    "max": 0
+  },
+  "weather": "DOWNFALL",
+  "timeBlock": {
+    "startHour": 20,
+    "endHour": 3
+  },
+  "maximumRate": {
+    "amount": 1,
+    "per": {
+      "days": 1
+    }
+  },
+  "initialSpawns": [
+    {
+      "entity": "qa/seeded-zombie",
+      "rarity": 1,
+      "minSpawns": 2,
+      "maxSpawns": 4
+    },
+    {
+      "entity": "qa/seeded-husk",
+      "rarity": 2,
+      "minSpawns": 2,
+      "maxSpawns": 4
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/natural-spawning.mjs

@@ -8,7 +8,8 @@ export default {
       context.expect(response.includes(expected) && !response.includes('SPAWN_QA_FAILED'), response)
       return response
     }
-    const entities = name => Object.values(context.bot.entities).filter(entity => entity.name === name)
+    const entities = name => Object.values(context.bot.entities).filter(entity => entity.name === name
+      && entity.position.x >= 0 && entity.position.x < 16 && entity.position.z >= 0 && entity.position.z < 16)
     await context.step('prepare the synthetic Iris world and dark cave', async () => {
       await command('setup', 'SPAWN_QA_SETUP world=iris:spawn_qa seed=78264193', 180000)
       await wait(() => Math.abs(context.bot.entity.position.y - 67) < 1, 'Fixture world teleport')

adapters/bukkit/plugin/src/test/gameplay/noise-pack/biomes/flat.json

@@ -0,0 +1,32 @@
+{
+  "name": "Flat",
+  "derivative": "minecraft:plains",
+  "vanillaDerivative": "minecraft:plains",
+  "layers": [
+    {
+      "minHeight": 1,
+      "maxHeight": 1,
+      "palette": [
+        {
+          "block": "minecraft:lime_wool"
+        }
+      ]
+    },
+    {
+      "minHeight": 384,
+      "maxHeight": 384,
+      "palette": [
+        {
+          "block": "minecraft:green_concrete"
+        }
+      ]
+    }
+  ],
+  "generators": [
+    {
+      "generator": "flat",
+      "min": 64,
+      "max": 96
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/noise-pack/dimensions/noise-fixture.json

@@ -0,0 +1,28 @@
+{
+  "name": "Noise Sources",
+  "version": 1,
+  "mode": {
+    "type": "OVERWORLD"
+  },
+  "regions": [
+    "flat"
+  ],
+  "focusRegion": "flat",
+  "focus": "flat",
+  "landChance": 1,
+  "environment": "NORMAL",
+  "dimensionHeight": {
+    "min": -64,
+    "max": 320
+  },
+  "logicalHeight": 384,
+  "fluidHeight": 0,
+  "bedrock": false,
+  "rockPalette": {
+    "palette": [
+      {
+        "block": "minecraft:red_concrete"
+      }
+    ]
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/noise-pack/expressions/terrain.json

@@ -0,0 +1,3 @@
+{
+  "expression": "0.5 + sin(x * 0.15) * 0.25 + cos(y * 0.13) * 0.25"
+}

adapters/bukkit/plugin/src/test/gameplay/noise-pack/generators/flat.json

@@ -0,0 +1,22 @@
+{
+  "interpolator": {
+    "function": "NONE",
+    "horizontalScale": 1
+  },
+  "seed": 310,
+  "composite": [
+    {
+      "seed": 310,
+      "style": {
+        "expression": "terrain"
+      }
+    },
+    {
+      "seed": 311,
+      "style": {
+        "style": "CLOVER_HERMITE",
+        "zoom": 0.1
+      }
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/noise-pack/regions/flat.json

@@ -0,0 +1,12 @@
+{
+  "name": "Flat",
+  "landBiomes": [
+    "flat"
+  ],
+  "seaBiomes": [
+    "flat"
+  ],
+  "shoreBiomes": [
+    "flat"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/noise.mjs

@@ -0,0 +1,48 @@
+import { readFile } from 'node:fs/promises'
+import path from 'node:path'
+
+export default {
+  name: 'iris-noise',
+  description: 'Verify expression and interpolated noise produce varied, bounded terrain visible to a player.',
+  async run(context) {
+    const source = await readFile(path.join(context.server.directory, '.server-source'), 'utf8')
+    context.expect(/^isolated=true\s*$/m.test(source), 'Noise generation requires an isolated instance')
+    await context.step('create a world with expression and Clover noise', async () => {
+      const response = await context.command('/iris create name=noise_probe type=noise-fixture seed=78264193',
+        /Successfully created your world|Failed to create/, 180000)
+      context.expect(response.includes('Successfully created your world'), response)
+    })
+    await context.step('client observes bounded terrain with varying heights', async () => {
+      let columns = 0
+      let minimum = Infinity
+      let maximum = -Infinity
+      await context.waitUntil(() => {
+        columns = 0
+        minimum = Infinity
+        maximum = -Infinity
+        const center = context.bot.entity.position.floored()
+        for (let x = -8; x <= 8; x++) {
+          for (let z = -8; z <= 8; z++) {
+            let surface = null
+            for (let y = 60; y <= 100; y++) {
+              const position = center.offset(x, y - center.y, z)
+              const block = context.bot.blockAt(position)
+              if (!block) return false
+              if (block.name === 'lime_wool') {
+                if (surface !== null || context.bot.blockAt(position.offset(0, 1, 0))?.name !== 'air') return false
+                surface = y
+              }
+            }
+            if (surface === null || surface < 64 || surface > 96) return false
+            columns++
+            minimum = Math.min(minimum, surface)
+            maximum = Math.max(maximum, surface)
+          }
+        }
+        return columns === 289 && maximum - minimum >= 3
+      }, { label: '289 noise columns with bounded, varied surfaces', timeoutMs: 60000, intervalMs: 250 })
+      context.expect(columns === 289 && maximum - minimum >= 3, 'Client verified noise terrain', { columns, minimum, maximum })
+      context.report.noiseTerrain = { columns, minimum, maximum }
+    })
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/seeded-entities.mjs

@@ -0,0 +1,24 @@
+export default {
+  name: 'iris-seeded-entities',
+  description: 'Replay initial chunk and marker populations in reversed order, comparing positions and complete equipment data.',
+  async run(context) {
+    const command = async (operation, expected, timeoutMs) => {
+      const response = await context.command(`/irisspawnqa ${operation}`, /SPAWN_QA_[A-Z]+(?:\s|$)/, timeoutMs)
+      context.expect(response.includes(expected) && !response.includes('SPAWN_QA_FAILED'), response)
+    }
+    await context.step('prepare a controlled Iris world', async () => {
+      await command('setup', 'SPAWN_QA_SETUP', 180000)
+    })
+    await context.step('replay initial mobs despite unrelated randomness and live spawn restrictions', async () => {
+      await command('seeded', 'SPAWN_QA_SEEDED chunks=2 markers=2 repeats=2 equipment=true attributes=true', 60000)
+      await context.waitUntil(() => Object.values(context.bot.entities).some(entity => entity.name === 'zombie' || entity.name === 'husk'), {
+        label: 'Generated mobs reached the client', timeoutMs: 10000, intervalMs: 100
+      })
+      context.report.seededEntities = { chunks: 2, markers: 2, repeats: 2, positions: true, equipmentBytes: true, attributeIds: true }
+    })
+    await context.step('retry a skipped initial pass and persist completion once', async () => {
+      await command('completion', 'SPAWN_QA_COMPLETION retry=true callbacks=1 persisted=true owned=true', 30000)
+      context.report.seededEntities.completionRetry = true
+    })
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/structure-pack/biomes/flat.json

@@ -0,0 +1,45 @@
+{
+  "name": "Flat",
+  "derivative": "minecraft:plains",
+  "vanillaDerivative": "minecraft:plains",
+  "layers": [
+    {
+      "minHeight": 1,
+      "maxHeight": 1,
+      "palette": [
+        {
+          "block": "minecraft:lime_wool"
+        }
+      ]
+    },
+    {
+      "minHeight": 384,
+      "maxHeight": 384,
+      "palette": [
+        {
+          "block": "minecraft:stone"
+        }
+      ]
+    }
+  ],
+  "generators": [
+    {
+      "generator": "flat",
+      "min": 64,
+      "max": 64
+    }
+  ],
+  "objects": [
+    {
+      "place": [
+        "object"
+      ],
+      "chance": 1,
+      "density": 4,
+      "mode": "CENTER_HEIGHT",
+      "rotation": {
+        "enabled": false
+      }
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/structure-pack/dimensions/structure-fixture.json

@@ -0,0 +1,66 @@
+{
+  "name": "Structure Fixture",
+  "version": 1,
+  "mode": {
+    "type": "OVERWORLD"
+  },
+  "regions": [
+    "flat"
+  ],
+  "focusRegion": "flat",
+  "focus": "flat",
+  "landChance": 1,
+  "environment": "NORMAL",
+  "dimensionHeight": {
+    "min": -64,
+    "max": 320
+  },
+  "logicalHeight": 384,
+  "fluidHeight": 0,
+  "bedrock": false,
+  "rockPalette": {
+    "palette": [
+      {
+        "block": "minecraft:stone"
+      }
+    ]
+  },
+  "structures": [
+    {
+      "structures": [
+        "surface"
+      ],
+      "placementId": "surface",
+      "distribution": "DENSITY",
+      "density": 1,
+      "anchor": "SURFACE",
+      "terrain": {
+        "mode": "PRESERVE"
+      },
+      "stilt": {
+        "maxDepth": 16,
+        "palette": {
+          "palette": [
+            {
+              "block": "minecraft:diamond_block"
+            }
+          ]
+        }
+      }
+    },
+    {
+      "structures": [
+        "buried"
+      ],
+      "placementId": "buried",
+      "distribution": "DENSITY",
+      "density": 1,
+      "anchor": "HEIGHT_BAND",
+      "minHeight": 24,
+      "maxHeight": 24,
+      "terrain": {
+        "mode": "BORE"
+      }
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/structure-pack/generators/flat.json

@@ -0,0 +1,15 @@
+{
+  "interpolator": {
+    "function": "NONE",
+    "horizontalScale": 1
+  },
+  "seed": 310,
+  "composite": [
+    {
+      "seed": 310,
+      "style": {
+        "style": "FLAT"
+      }
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/structure-pack/jigsaw-pieces/buried.json

@@ -0,0 +1,8 @@
+{
+  "object": "buried",
+  "connectors": [],
+  "rotatable": false,
+  "rules": {
+    "terminal": true
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/structure-pack/jigsaw-pieces/surface.json

@@ -0,0 +1,8 @@
+{
+  "object": "surface",
+  "connectors": [],
+  "rotatable": false,
+  "rules": {
+    "terminal": true
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/structure-pack/jigsaw-pools/buried.json

@@ -0,0 +1,8 @@
+{
+  "pieces": [
+    {
+      "piece": "buried",
+      "weight": 1
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/structure-pack/jigsaw-pools/surface.json

@@ -0,0 +1,8 @@
+{
+  "pieces": [
+    {
+      "piece": "surface",
+      "weight": 1
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/structure-pack/regions/flat.json

@@ -0,0 +1,12 @@
+{
+  "name": "Flat",
+  "landBiomes": [
+    "flat"
+  ],
+  "seaBiomes": [
+    "flat"
+  ],
+  "shoreBiomes": [
+    "flat"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/structure-pack/structures/buried.json

@@ -0,0 +1,6 @@
+{
+  "startPool": "buried",
+  "maxDepth": 1,
+  "maxSizeChunks": 1,
+  "placeMode": "STRUCTURE_PIECE"
+}

adapters/bukkit/plugin/src/test/gameplay/structure-pack/structures/surface.json

@@ -0,0 +1,6 @@
+{
+  "startPool": "surface",
+  "maxDepth": 1,
+  "maxSizeChunks": 1,
+  "placeMode": "STRUCTURE_PIECE"
+}

adapters/bukkit/plugin/src/test/gameplay/structures.mjs

@@ -0,0 +1,52 @@
+import { readFile } from 'node:fs/promises'
+import { createHash } from 'node:crypto'
+import path from 'node:path'
+
+export default {
+  name: 'iris-structures',
+  description: 'Verify surface foundations, buried rooms, and waterlogged object blocks in generated chunks.',
+  async run(context) {
+    const source = await readFile(path.join(context.server.directory, '.server-source'), 'utf8')
+    context.expect(/^isolated=true\s*$/m.test(source), 'Structure generation requires an isolated instance')
+    const world = context.options.command ?? 'structure_probe'
+    context.expect(/^[a-z0-9_]+$/.test(world), 'Fixture world name must be a simple identifier')
+    await context.step('create the structure fixture world', async () => {
+      const response = await context.command(`/iris create name=${world} type=structure-fixture seed=78264193`,
+        /World ready|Failed to create/, 180000)
+      context.expect(response.includes('World ready'), response)
+    })
+    await context.step('observe structures and objects above and below terrain', async () => {
+      await context.waitUntil(() => {
+        if (Math.abs(context.bot.entity.position.x) > 32 || Math.abs(context.bot.entity.position.z) > 32) return false
+        for (let x = -16; x < 32; x += 16) {
+          for (let z = -16; z < 32; z += 16) {
+            for (let y = 16; y <= 80; y += 16) {
+              if (!context.bot.blockAt(context.bot.entity.position.clone().set(x, y, z))) return false
+            }
+          }
+        }
+        return true
+      }, { label: 'Complete structure fixture chunks', timeoutMs: 60000, intervalMs: 100 })
+      const digest = createHash('sha256')
+      const counts = { emerald_block: 0, diamond_block: 0, blue_concrete: 0, gold_block: 0, oak_slab: 0 }
+      for (let x = -16; x < 32; x++) {
+        for (let z = -16; z < 32; z++) {
+          for (let y = 16; y <= 80; y++) {
+            const block = context.bot.blockAt(context.bot.entity.position.clone().set(x, y, z))
+            context.expect(block !== null, 'Every sampled structure block must be loaded')
+            digest.update(`${block.stateId}\n`)
+            if (Object.hasOwn(counts, block.name)) counts[block.name]++
+            if (block.name === 'emerald_block') context.expect(y > 64, 'Surface platform must be above terrain')
+            if (block.name === 'blue_concrete') context.expect(y < 40, 'Buried room must remain underground')
+            if (block.name === 'oak_slab') context.expect(block.getProperties().waterlogged === false,
+              'Object slabs placed on dry ground must clear waterlogging')
+          }
+        }
+      }
+      for (const [block, count] of Object.entries(counts)) {
+        context.expect(count > 0, `Generated fixture must contain ${block}`, { count })
+      }
+      context.report.structures = { counts, hash: digest.digest('hex') }
+    })
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/studio-hotload-lifecycle.mjs

@@ -0,0 +1,71 @@
+import { readFile, writeFile } from 'node:fs/promises'
+import path from 'node:path'
+import { setup, openStudio, closeStudio, sampleTerrain, readJson, writeJson,
+  logPosition, logSince } from './studio-support.mjs'
+
+export default {
+  name: 'iris-studio-hotload-lifecycle',
+  description: 'Generate cold chunks during Studio edits and close after saving an edit.',
+  async run(context) {
+    const fixture = await setup(context)
+    const biomeFile = path.join(fixture.pack, 'biomes', 'flat.json')
+    const original = await readFile(biomeFile, 'utf8')
+    const logOffset = await logPosition(fixture)
+    let active
+    let x = 16384
+    try {
+      active = await openStudio(context, fixture)
+      await sampleTerrain(context, fixture, 0, fixture.state.material)
+      for (let cycle = 0; cycle < 3; cycle++) {
+        await context.step(`Load cold chunks during hotload ${cycle + 1}`, async () => {
+          const manifestFile = fixture.manifestPath(active.key)
+          const before = await readJson(manifestFile)
+          const biome = await readJson(biomeFile)
+          const material = cycle % 2 === 0 ? 'gold_block' : 'diamond_block'
+          biome.name = `Lifecycle terrain ${cycle + 1}`
+          biome.layers[0].palette[0].block = `minecraft:${material}`
+          const startedAt = Date.now()
+          await writeJson(biomeFile, biome)
+          x += 512
+          await context.command(`/minecraft:tp @s ${x + 0.5} 101 0.5`, /Teleported/i, 15000)
+          const after = await fixture.wait(async () => {
+            const manifest = await readJson(manifestFile)
+            return manifest.activeActivationId !== before.activeActivationId ? manifest : false
+          }, 'Hotload did not complete while the player requested fresh chunks', 90000)
+          const activationDurationMs = Date.now() - startedAt
+          await fixture.wait(() => Math.abs(context.bot.entity.position.x - x - 0.5) < 1,
+            'Cold chunk teleport did not arrive after hotload', 30000)
+          context.report.iris.activations.push({ before: before.activeActivationId,
+            after: after.activeActivationId, material, coldChunkRequests: 1, activationDurationMs })
+          x += 2048
+          await sampleTerrain(context, fixture, x, material)
+        })
+      }
+      await context.step('Close Studio while a saved edit is activating', async () => {
+        const biome = await readJson(biomeFile)
+        biome.name = 'Lifecycle close terrain'
+        await writeJson(biomeFile, biome)
+        const pending = await fixture.wait(async () => {
+          const manifest = await readJson(fixture.manifestPath(active.key))
+          return manifest.pendingActivationId !== null ? manifest : false
+        }, 'The saved close edit did not enter activation', 90000)
+        context.report.iris.closePendingActivationId = pending.pendingActivationId
+        await closeStudio(context, fixture, active)
+        active = undefined
+        await context.command('/minecraft:seed', /Seed:/i, 10000)
+      })
+      await context.step('Reopen the edited pack and retain usable generation', async () => {
+        active = await openStudio(context, fixture)
+        await sampleTerrain(context, fixture, 0, 'gold_block')
+        await closeStudio(context, fixture, active)
+        active = undefined
+      })
+      const log = await logSince(fixture, logOffset)
+      context.expect(!/Studio generation update failed|Unable to (capture terrain|save the terrain boundary)|ClosedChannelException|Chunk system error|server has stopped responding|could not acquire its engine runtime|Failed to list files/i.test(log),
+        'Studio lifecycle emitted a generation, snapshot, storage, or watchdog failure')
+    } finally {
+      if (active) await closeStudio(context, fixture, active)
+      await writeFile(biomeFile, original)
+    }
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/studio-open.mjs

@@ -0,0 +1,74 @@
+import { readFile, stat } from 'node:fs/promises'
+import { createHash } from 'node:crypto'
+import path from 'node:path'
+
+export default {
+  name: 'iris-studio-open',
+  description: 'Measure repeated Studio entry and verify visible terrain, spectator mode, and world cleanup.',
+  async run(context) {
+    const source = await readFile(path.join(context.server.directory, '.server-source'), 'utf8')
+    context.expect(/^isolated=true\s*$/m.test(source), 'Studio entry requires an isolated instance')
+    const match = /^([a-z0-9_-]+):([1-4])$/.exec(context.options.command ?? 'overworld:2')
+    context.expect(match, 'Expected pack:cycles with one to four cycles')
+    context.report.studioOpen = []
+    for (let cycle = 0; cycle < Number(match[2]); cycle++) {
+      await context.step(`open and close Studio ${cycle + 1}`, async () => {
+        const before = new Set((await context.observe()).worlds.map(world => world.id))
+        const start = Date.now()
+        let world
+        let center
+        await context.command(`/iris studio open ${match[1]} seed=1337`)
+        await context.waitUntil(async () => {
+          const observation = await context.observe()
+          const player = observation.players.find(entry => entry.username === context.bot.username)
+          world = observation.worlds.find(entry => entry.id === player?.world)
+          if (!world || before.has(world.id) || !/iris-[0-9a-f-]{36}$/.test(world.name)) return false
+          center = context.bot.entity.position.floored()
+          return world.loadedChunks > 0 && context.bot.blockAt(center) !== null && context.bot.game.gameMode === 'spectator'
+        }, { label: 'Studio arrival with terrain and spectator mode', timeoutMs: 180000, intervalMs: 100 })
+        const arrivalMs = Date.now() - start
+        context.expect(Number.isInteger(context.bot.game.minY) && Number.isInteger(context.bot.game.height),
+          'Studio dimension must report its vertical range')
+        await context.waitUntil(() => {
+          for (let x = -1; x <= 1; x++) {
+            for (let z = -1; z <= 1; z++) {
+              for (let y = context.bot.game.minY; y < context.bot.game.minY + context.bot.game.height; y += 16) {
+                if (context.bot.blockAt(center.offset(x, y - center.y, z)) === null) return false
+              }
+            }
+          }
+          return true
+        }, { label: 'Complete neighboring Studio columns', timeoutMs: 60000, intervalMs: 100 })
+        const digest = createHash('sha256')
+        let solid = 0
+        for (let x = -1; x <= 1; x++) {
+          for (let z = -1; z <= 1; z++) {
+            for (let y = context.bot.game.minY; y < context.bot.game.minY + context.bot.game.height; y++) {
+              const block = context.bot.blockAt(center.offset(x, y - center.y, z))
+              context.expect(block !== null, 'Studio entry column must be available')
+              digest.update(`${block.name}\n`)
+              if (!['air', 'cave_air', 'void_air', 'water', 'lava'].includes(block.name)) solid++
+            }
+          }
+        }
+        context.expect(solid > 0, 'Studio entry must contain solid terrain')
+        context.report.studioOpen.push({ cycle, arrivalMs, world: world.name, x: center.x, z: center.z,
+          terrainHash: digest.digest('hex'), solid })
+        const closed = await context.command('/iris studio close', /^Studio closed\.$|Studio close failed:/, 180000)
+        context.expect(closed === 'Studio closed.', closed)
+        await context.waitUntil(async () => !(await context.observe()).worlds.some(entry => entry.id === world.id),
+          { label: 'Studio world unload', timeoutMs: 90000, intervalMs: 100 })
+        const transientName = /iris-[0-9a-f-]{36}$/.exec(world.name)[0]
+        const properties = await readFile(path.join(context.server.directory, 'server.properties'), 'utf8')
+        const level = /^level-name=(.+)$/m.exec(properties)?.[1].trim() ?? 'world'
+        const directory = path.join(context.server.directory, level, 'dimensions', 'iris', transientName)
+        await context.waitUntil(async () => {
+          try { await stat(directory); return false } catch (error) {
+            if (error.code === 'ENOENT') return true
+            throw error
+          }
+        }, { label: 'Studio directory cleanup', timeoutMs: 90000, intervalMs: 100 })
+      })
+    }
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack-26.2/data/iris_qa/loot_table/blocked.json

@@ -0,0 +1,33 @@
+{
+  "type": "minecraft:chest",
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:map",
+          "functions": [
+            {
+              "destination": "iris_qa:blocked",
+              "decoration": "minecraft:red_x",
+              "zoom": 0,
+              "search_radius": 50,
+              "skip_existing_chunks": false,
+              "function": "minecraft:exploration_map"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:diamond"
+        }
+      ]
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack-26.2/data/iris_qa/loot_table/disabled.json

@@ -0,0 +1,33 @@
+{
+  "type": "minecraft:chest",
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:map",
+          "functions": [
+            {
+              "destination": "iris_qa:disabled",
+              "decoration": "minecraft:red_x",
+              "zoom": 0,
+              "search_radius": 50,
+              "skip_existing_chunks": false,
+              "function": "minecraft:exploration_map"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:diamond"
+        }
+      ]
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack-26.2/data/iris_qa/loot_table/found.json

@@ -0,0 +1,33 @@
+{
+  "type": "minecraft:chest",
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:map",
+          "functions": [
+            {
+              "destination": "iris_qa:found",
+              "decoration": "minecraft:red_x",
+              "zoom": 0,
+              "search_radius": 50,
+              "skip_existing_chunks": false,
+              "function": "minecraft:exploration_map"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:diamond"
+        }
+      ]
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack-26.2/data/iris_qa/loot_table/mixed.json

@@ -0,0 +1,33 @@
+{
+  "type": "minecraft:chest",
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:map",
+          "functions": [
+            {
+              "destination": "iris_qa:mixed",
+              "decoration": "minecraft:red_x",
+              "zoom": 0,
+              "search_radius": 50,
+              "skip_existing_chunks": false,
+              "function": "minecraft:exploration_map"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:diamond"
+        }
+      ]
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack-26.2/data/iris_qa/loot_table/reload.json

@@ -0,0 +1,14 @@
+{
+  "type": "minecraft:chest",
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:diamond"
+        }
+      ]
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack-26.2/data/iris_qa/tags/worldgen/structure/blocked.json

@@ -0,0 +1,5 @@
+{
+  "values": [
+    "minecraft:buried_treasure"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack-26.2/data/iris_qa/tags/worldgen/structure/disabled.json

@@ -0,0 +1,5 @@
+{
+  "values": [
+    "minecraft:mansion"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack-26.2/data/iris_qa/tags/worldgen/structure/found.json

@@ -0,0 +1,5 @@
+{
+  "values": [
+    "minecraft:desert_pyramid"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack-26.2/data/iris_qa/tags/worldgen/structure/mixed.json

@@ -0,0 +1,6 @@
+{
+  "values": [
+    "minecraft:buried_treasure",
+    "minecraft:desert_pyramid"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack-26.2/pack.mcmeta

@@ -0,0 +1,13 @@
+{
+  "pack": {
+    "description": "Treasure map gameplay fixtures",
+    "min_format": [
+      107,
+      1
+    ],
+    "max_format": [
+      107,
+      1
+    ]
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack/data/iris_qa/loot_table/blocked.json

@@ -0,0 +1,31 @@
+{
+  "type": "minecraft:chest",
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:filled_map",
+          "modifier": {
+            "destination": "#iris_qa:blocked",
+            "decoration": "minecraft:red_x",
+            "zoom": 0,
+            "search_radius": 50,
+            "skip_existing_chunks": false,
+            "type": "minecraft:exploration_map"
+          }
+        }
+      ]
+    },
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:diamond"
+        }
+      ]
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack/data/iris_qa/loot_table/disabled.json

@@ -0,0 +1,31 @@
+{
+  "type": "minecraft:chest",
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:filled_map",
+          "modifier": {
+            "destination": "#iris_qa:disabled",
+            "decoration": "minecraft:red_x",
+            "zoom": 0,
+            "search_radius": 50,
+            "skip_existing_chunks": false,
+            "type": "minecraft:exploration_map"
+          }
+        }
+      ]
+    },
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:diamond"
+        }
+      ]
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack/data/iris_qa/loot_table/found.json

@@ -0,0 +1,31 @@
+{
+  "type": "minecraft:chest",
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:filled_map",
+          "modifier": {
+            "destination": "#iris_qa:found",
+            "decoration": "minecraft:red_x",
+            "zoom": 0,
+            "search_radius": 50,
+            "skip_existing_chunks": false,
+            "type": "minecraft:exploration_map"
+          }
+        }
+      ]
+    },
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:diamond"
+        }
+      ]
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack/data/iris_qa/loot_table/mixed.json

@@ -0,0 +1,31 @@
+{
+  "type": "minecraft:chest",
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:filled_map",
+          "modifier": {
+            "destination": "#iris_qa:mixed",
+            "decoration": "minecraft:red_x",
+            "zoom": 0,
+            "search_radius": 50,
+            "skip_existing_chunks": false,
+            "type": "minecraft:exploration_map"
+          }
+        }
+      ]
+    },
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:diamond"
+        }
+      ]
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack/data/iris_qa/loot_table/reload.json

@@ -0,0 +1,14 @@
+{
+  "type": "minecraft:chest",
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "minecraft:diamond"
+        }
+      ]
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack/data/iris_qa/tags/worldgen/structure/blocked.json

@@ -0,0 +1,5 @@
+{
+  "values": [
+    "minecraft:buried_treasure"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack/data/iris_qa/tags/worldgen/structure/disabled.json

@@ -0,0 +1,5 @@
+{
+  "values": [
+    "minecraft:mansion"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack/data/iris_qa/tags/worldgen/structure/found.json

@@ -0,0 +1,5 @@
+{
+  "values": [
+    "minecraft:desert_pyramid"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack/data/iris_qa/tags/worldgen/structure/mixed.json

@@ -0,0 +1,6 @@
+{
+  "values": [
+    "minecraft:buried_treasure",
+    "minecraft:desert_pyramid"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-datapack/pack.mcmeta

@@ -0,0 +1,13 @@
+{
+  "pack": {
+    "description": "Treasure map gameplay fixtures",
+    "min_format": [
+      121,
+      0
+    ],
+    "max_format": [
+      121,
+      0
+    ]
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-pack/biomes/flat.json

@@ -0,0 +1,32 @@
+{
+  "name": "Flat",
+  "derivative": "minecraft:plains",
+  "vanillaDerivative": "minecraft:plains",
+  "layers": [
+    {
+      "minHeight": 1,
+      "maxHeight": 1,
+      "palette": [
+        {
+          "block": "minecraft:lime_wool"
+        }
+      ]
+    },
+    {
+      "minHeight": 384,
+      "maxHeight": 384,
+      "palette": [
+        {
+          "block": "minecraft:green_concrete"
+        }
+      ]
+    }
+  ],
+  "generators": [
+    {
+      "generator": "flat",
+      "min": 96,
+      "max": 96
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-pack/dimensions/treasure-map-fixture.json

@@ -0,0 +1,64 @@
+{
+  "name": "Treasure Map Fixture",
+  "version": 1,
+  "mode": {
+    "type": "OVERWORLD"
+  },
+  "regions": [
+    "flat"
+  ],
+  "focusRegion": "flat",
+  "focus": "flat",
+  "landChance": 1,
+  "environment": "NORMAL",
+  "dimensionHeight": {
+    "min": -64,
+    "max": 320
+  },
+  "logicalHeight": 384,
+  "fluidHeight": 0,
+  "bedrock": false,
+  "rockPalette": {
+    "palette": [
+      {
+        "block": "minecraft:red_concrete"
+      }
+    ]
+  },
+  "importedStructures": {
+    "disabled": [
+      "minecraft:"
+    ]
+  },
+  "structures": [
+    {
+      "placementId": "blocked-treasure",
+      "nativeStructures": [
+        {
+          "structure": "minecraft:buried_treasure"
+        }
+      ],
+      "distribution": "RANDOM_SPREAD",
+      "spacing": 1,
+      "separation": 0,
+      "minHeight": 0,
+      "maxHeight": 0
+    },
+    {
+      "placementId": "reachable-pyramid",
+      "nativeStructures": [
+        {
+          "structure": "minecraft:desert_pyramid"
+        }
+      ],
+      "distribution": "RANDOM_SPREAD",
+      "spacing": 16,
+      "separation": 4
+    }
+  ],
+  "loot": {
+    "tables": [
+      "fixture-diamond"
+    ]
+  }
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-pack/generators/flat.json

@@ -0,0 +1,15 @@
+{
+  "interpolator": {
+    "function": "NONE",
+    "horizontalScale": 1
+  },
+  "seed": 310,
+  "composite": [
+    {
+      "seed": 310,
+      "style": {
+        "style": "FLAT"
+      }
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-pack/loot/fixture-diamond.json

@@ -0,0 +1,15 @@
+{
+  "name": "Fixture Diamond",
+  "rarity": 1,
+  "minPicked": 1,
+  "maxPicked": 1,
+  "maxTries": 1,
+  "loot": [
+    {
+      "type": "diamond",
+      "rarity": 1,
+      "minAmount": 1,
+      "maxAmount": 1
+    }
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-map-pack/regions/flat.json

@@ -0,0 +1,12 @@
+{
+  "name": "Flat",
+  "landBiomes": [
+    "flat"
+  ],
+  "seaBiomes": [
+    "flat"
+  ],
+  "shoreBiomes": [
+    "flat"
+  ]
+}

adapters/bukkit/plugin/src/test/gameplay/treasure-maps.mjs

@@ -0,0 +1,211 @@
+import { readFile, writeFile } from 'node:fs/promises'
+import path from 'node:path'
+
+const simplifyNbt = value => {
+  if (Array.isArray(value)) return value.map(simplifyNbt)
+  if (value === null || typeof value !== 'object') return value
+  if ('type' in value && 'value' in value) return simplifyNbt(value.value)
+  return Object.fromEntries(Object.entries(value).map(([key, entry]) => [key, simplifyNbt(entry)]))
+}
+
+const completeClientTicks = context => {
+  const client = context.bot._client
+  context.expect(context.bot.supportFeature('sendsClientTickEndPacket'), 'Fixture client supports tick delimiters')
+  let tickTimer
+  const finishTick = () => {
+    clearTimeout(tickTimer)
+    client.write('tick_end', {})
+    tickTimer = setTimeout(finishTick, 50)
+  }
+  context.bot.on('move', finishTick)
+  finishTick()
+  context.signal.addEventListener('abort', () => {
+    clearTimeout(tickTimer)
+    context.bot.removeListener('move', finishTick)
+  }, { once: true })
+}
+
+export default {
+  name: 'iris-treasure-maps',
+  description: 'Verify exploration-map targets, bounded misses, retained loot, and normal/copper storage on Iris.',
+  async run(context) {
+    completeClientTicks(context)
+    context.bot.physicsEnabled = false
+    context.bot.clearControlStates()
+    context.bot.entity.velocity.set(0, 0, 0)
+    const source = await readFile(path.join(context.server.directory, '.server-source'), 'utf8')
+    context.expect(/^isolated=true\s*$/m.test(source), 'Treasure map fixtures require an isolated instance')
+    const command = async (operation, expected, timeoutMs = 30000) => {
+      const token = expected.split(' ')[0]
+      const response = await context.command(`/irislifecycle ${operation}`,
+        new RegExp(`${token}|NATIVE_FAILED|TREASURE_.*_FAILED`), timeoutMs)
+      context.expect(response.includes(expected), response)
+      return response
+    }
+    const bounded = (label, action) => context.waitUntil(async () => {
+      await action()
+      return true
+    }, { label, timeoutMs: 10000 })
+    let lastActivation = 0
+    const openChest = async material => {
+      const position = context.bot.entity.position.clone().set(2, 161, 2)
+      await context.waitUntil(() => context.bot.blockAt(position)?.name === material, {
+        label: `${material} reached the client`, timeoutMs: 10000
+      })
+      const delay = 150 - (performance.now() - lastActivation)
+      if (delay > 0) await context.sleep(delay)
+      const opened = context.waitForEvent('windowOpen', undefined, 30000)
+      await bounded(`Activate ${material}`, () => context.bot.activateBlock(context.bot.blockAt(position)))
+      lastActivation = performance.now()
+      const [window] = await opened
+      return window
+    }
+    const chestItems = window => window.slots.slice(0, window.inventoryStart).filter(Boolean)
+    const mapId = item => item.componentMap?.get('map_id')?.data
+    let missItem
+    await context.step('create and enter the Iris treasure map world', async () => {
+      const response = await command('treasure-map-create', 'TREASURE_MAP_READY world=iris:treasure_map_probe', 180000)
+      const version = response.match(/version=(\S+)/)?.[1]
+      context.expect(/^26\.[23](?:[.-]|$)/.test(version ?? ''), 'Fixture requires its matching 26.2 or 26.3 data pack', { version })
+      missItem = version.startsWith('26.2') ? 'map' : 'filled_map'
+      context.report.treasurePlatform = { version, folia: response.includes('folia=true'), missItem }
+      await context.waitUntil(() => context.bot.entity.position.distanceTo(
+        context.bot.entity.position.clone().set(0.5, 161, 0.5)
+      ) < 2, { label: 'Fixture teleport reached the client', timeoutMs: 30000 })
+    })
+    await context.step('confirm the missing target exhausts the placement search budget', async () => {
+      await command('treasure-map-limit', 'TREASURE_MAP_LIMIT status=SEARCH_LIMIT_REACHED', 120000)
+    })
+    for (const material of ['chest', 'copper_chest']) {
+      for (const destination of ['blocked', 'disabled', 'found', 'mixed']) {
+        await context.step(`open ${material} with ${destination} map target and retain all loot`, async () => {
+          const evidence = { destination, material, phase: 'prepare' }
+          context.report.treasureMaps ??= []
+          context.report.treasureMaps.push(evidence)
+          const located = destination === 'found' || destination === 'mixed'
+          const mapName = located ? 'filled_map' : missItem
+          await command(`treasure-map-chest ${destination} ${material.toUpperCase()}`,
+            `TREASURE_MAP_CHEST destination=${destination} material=${material.toUpperCase()}`)
+          evidence.phase = 'open'
+          const window = await openChest(material)
+          evidence.windowType = window.type
+          evidence.inventoryStart = window.inventoryStart
+          let targetId
+          let diamondType
+          let diamondsBefore
+          let marker
+          let verified
+          try {
+            await context.waitUntil(() => {
+              const items = chestItems(window)
+              return items.some(item => item.name === mapName) && items.some(item => item.name === 'diamond')
+            }, { label: `${destination} chest contains map and diamond`, timeoutMs: 30000 })
+            const items = chestItems(window)
+            const map = items.find(item => item.name === mapName)
+            const diamond = items.find(item => item.name === 'diamond')
+            targetId = mapId(map)
+            context.expect(items.length === 2 && map.count === 1 && diamond.count === 1,
+              'Loot table must produce exactly one map and one diamond')
+            context.expect((targetId !== undefined) === located, 'Only reachable destinations receive map data', {
+              destination, components: map.components
+            })
+            const response = await command(`treasure-map-inspect ${destination}`,
+              `TREASURE_MAP_INSPECT destination=${destination} diamonds=1 located=${located}`, 120000)
+            verified = Object.fromEntries([...response.matchAll(/(mapId|targetX|targetZ|centerX|centerZ)=(-?\d+)/g)]
+              .map(([, key, value]) => [key, Number(value)]))
+            const decorations = simplifyNbt(map.componentMap?.get('map_decorations')?.data)
+            marker = decorations?.['+']
+            if (located) {
+              context.expect(targetId === verified.mapId, 'Client and saved map IDs agree', { targetId, verified })
+              context.expect(marker?.type === 'minecraft:red_x'
+                && marker.x === verified.targetX && marker.z === verified.targetZ,
+              'Map marker points to the verified pyramid', { marker, verified, components: map.components })
+            } else {
+              context.expect(marker === undefined, 'Missing destinations must not invent a map marker', { decorations })
+            }
+            diamondType = diamond.type
+            diamondsBefore = context.bot.inventory.count(diamondType)
+            evidence.phase = 'withdraw'
+            evidence.diamondSlot = diamond.slot
+            await bounded(`Withdraw diamond from ${material} ${destination}`,
+              () => context.bot.clickWindow(diamond.slot, 0, 1))
+            evidence.phase = 'withdrawn'
+            await context.waitUntil(() => chestItems(window).every(item => item.name !== 'diamond'), {
+              label: 'Diamond transferred out of the chest', timeoutMs: 10000
+            })
+          } finally {
+            context.bot.closeWindow(window)
+          }
+          evidence.phase = 'reopen'
+          const reopened = await openChest(material)
+          try {
+            await context.waitUntil(() => chestItems(reopened).some(item => item.name === mapName), {
+              label: 'Saved map remains in the reopened chest', timeoutMs: 10000
+            })
+            const retained = chestItems(reopened)
+            context.expect(retained.length === 1 && retained[0].name === mapName && retained[0].count === 1,
+              'Reopening must not regenerate chest loot')
+            context.expect(mapId(retained[0]) === targetId, 'Reopening must retain the same map data')
+            context.expect(JSON.stringify(simplifyNbt(retained[0].componentMap?.get('map_decorations')?.data)?.['+'])
+              === JSON.stringify(marker), 'Reopening must retain the same destination marker')
+            await context.waitUntil(() => context.bot.inventory.count(diamondType) === diamondsBefore + 1, {
+              label: 'Chest awards exactly one diamond', timeoutMs: 10000
+            })
+            Object.assign(evidence, { phase: 'complete', mapItem: mapName,
+              mapId: targetId ?? null, marker: marker ?? null, verified, reopened: true })
+          } finally {
+            context.bot.closeWindow(reopened)
+          }
+        })
+      }
+    }
+    await context.step('verify storage variants, insertion rollback, and locate event results', async () => {
+      await command('treasure-extra-check', 'TREASURE_EXTRA_CHECK variants=9 rollback=true locateEvents=true', 120000)
+    })
+    await context.step('verify plugin loot runs on its owning region', async () => {
+      await command('treasure-region-check', 'TREASURE_REGION_LOOT copper=8 normal=1 events=9 owned=true', 120000)
+    })
+    await context.step('verify native loot table reload support', async () => {
+      await command('treasure-reload-before', 'TREASURE_RELOAD material=DIAMOND')
+      if (context.report.treasurePlatform.folia) {
+        const response = await context.command('/minecraft:reload', /Unknown or incomplete command|Reloading/i, 10000)
+        context.expect(response.includes('Unknown or incomplete command'),
+          'Folia fixture expects its unavailable data pack reload command', { response })
+        context.report.treasureReload = { status: 'unavailable', before: 'diamond', evidence: response }
+        return
+      }
+      const properties = await readFile(path.join(context.server.directory, 'server.properties'), 'utf8')
+      const levelName = properties.match(/^level-name=(.+)$/m)?.[1].trim() ?? 'world'
+      const tablePath = path.join(context.server.directory, levelName, 'datapacks', 'iris_treasure',
+        'data', 'iris_qa', 'loot_table', 'reload.json')
+      const original = await readFile(tablePath, 'utf8')
+      const replacement = JSON.parse(original)
+      context.expect(replacement.pools[0].entries[0].name === 'minecraft:diamond',
+        'Reload fixture must start with its diamond table')
+      const revision = async () => {
+        const response = await command('treasure-resources', 'TREASURE_RESOURCES revision=')
+        return Number(response.match(/revision=(\d+)/)?.[1])
+      }
+      const reload = async () => {
+        const before = await revision()
+        await context.command('/minecraft:reload', /Reloading/i, 30000)
+        await context.waitUntil(async () => await revision() > before, {
+          label: 'Server resource reload completed', timeoutMs: 120000, intervalMs: 500
+        })
+      }
+      replacement.pools[0].entries[0].name = 'minecraft:emerald'
+      try {
+        await writeFile(tablePath, `${JSON.stringify(replacement, null, 2)}\n`)
+        await reload()
+        await command('treasure-reload-after', 'TREASURE_RELOAD material=EMERALD')
+        context.report.treasureReload = { status: 'passed', before: 'diamond', after: 'emerald' }
+      } finally {
+        await writeFile(tablePath, original)
+        if (!context.signal.aborted) {
+          await reload()
+          await command('treasure-reload-before', 'TREASURE_RELOAD material=DIAMOND')
+        }
+      }
+    })
+  }
+}