Faster green test suite

- Removed the core processResources skip that fired on test-only invocations, which packaged a core jar with no generation kernel catalog and made all 10 probe and bukkit-plugin tests that reach GenerationKernelRegistry fail on every ./gradlew test
- Set maxParallelForks on :core:test to half the available processors, overridable with -PtestForks, and left the small modules single-forked so they do not re-pay the Minecraft bootstrap per fork or steal worker leases from core
- Resolved B.registries() per bound platform instead of latching the first one for the JVM lifetime, keeping the previous unbound behaviour, so a test that binds its own platform no longer reads a foreign platform's block states
- Resolved IrisObject.States per bound platform through accessors instead of static finals fixed at class-init, removing the NoClassDefFoundError and null material-key failures that appeared whenever class partitioning changed
- Bound an explicit platform in EngineMantleCoverageTest and IrisDimensionStackActuatorMetadataTest so they no longer depend on another class leaking a binding first
- Gated BukkitSpiConformanceTest registry probes on a live RegistryAccess and restored the IrisPlatforms binding it leaked, which was silently swallowing the stderr two SettingsHotloadWatchTest assertions read
- Initialised org.bukkit.Registry and Biome inside the RegistryAccess mock scope in ObjectStudioGeometryTest so Mockito no longer instruments Registry mid-clinit
- Replaced the SettingsHotloadWatchTest fixed 1200ms diagnostic window with a 10ms condition poll bounded at 4s
- Replaced the IrisCaveCarver3DNearParityTest wall-clock speedup benchmark with a deterministic density-sample count, cutting 28 carves to 2
- Cut HydrologyPlannerTest cold-owner parity from 12 tile plans to 4 and shared the immutable baseline plan across the early-owner tests
- Built one prototype project or staged history per class in the jigsaw studio and world replacement tests and copied it per test, replacing repeated fsync-bound fixture construction
- Replaced Mockito block-state fixtures with concrete implementations in the object IO, deposit modifier and nearest-block-index tests, removing about 2.5 million interceptions
- Replaced Thread.sleep with bounded condition polling in HydrologyTileCacheTest
- Deleted 19 test classes and 60 further test methods that asserted on production .java source text rather than behaviour, and removed the 19 now-unread iris.*Source system properties that fed them

build.gradle

@@ -132,27 +132,6 @@ nmsBindings.each { key, value ->
             }
             testRuntimeOnly(project(':core'))
         }
-
-        tasks.withType(org.gradle.api.tasks.testing.Test).configureEach {
-            systemProperty('iris.nmsChunkGeneratorSource',
-                rootProject.file("adapters/bukkit/nms/${key}/src/main/java/art/arcane/iris/core/nms/${key}/IrisChunkGenerator.java").absolutePath)
-            systemProperty('iris.nmsBindingSource',
-                rootProject.file("adapters/bukkit/nms/${key}/src/main/java/art/arcane/iris/core/nms/${key}/NMSBinding.java").absolutePath)
-            systemProperty('iris.nativeStructurePostProcessorSource',
-                rootProject.file('adapters/minecraft-common/src/main/java/art/arcane/iris/nativegen/NativeStructurePostProcessor.java').absolutePath)
-            systemProperty('iris.nativeStructureStartInjectorSource',
-                rootProject.file('adapters/minecraft-common/src/main/java/art/arcane/iris/nativegen/NativeStructureStartInjector.java').absolutePath)
-            systemProperty('iris.nativeStructureGenerationKeysSource',
-                rootProject.file('adapters/minecraft-common/src/main/java/art/arcane/iris/nativegen/NativeStructureGenerationKeys.java').absolutePath)
-            systemProperty('iris.nativeStructureVolumeIndexSource',
-                rootProject.file('adapters/minecraft-common/src/main/java/art/arcane/iris/nativegen/NativeStructureVolumeIndex.java').absolutePath)
-            systemProperty('iris.customBiomeSource',
-                rootProject.file("adapters/bukkit/nms/${key}/src/main/java/art/arcane/iris/core/nms/${key}/CustomBiomeSource.java").absolutePath)
-            systemProperty('iris.vanillaStructureBiomesSource',
-                rootProject.file("adapters/bukkit/nms/${key}/src/main/java/art/arcane/iris/core/nms/${key}/VanillaStructureBiomes.java").absolutePath)
-            systemProperty('iris.moddedStructureHooksSource',
-                rootProject.file('adapters/modded-common/src/main/java/art/arcane/iris/modded/ModdedStructureHooks.java').absolutePath)
-        }
     }
 }