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

core/build.gradle

@@ -136,12 +136,12 @@ dependencies {
     testImplementation(libs.multiverseCore)
 }
 
+int coreTestForks = Math.max(1, Integer.parseInt(providers.gradleProperty('testForks')
+    .getOrElse(String.valueOf(Math.max(1, (int) (Runtime.runtime.availableProcessors() / 2))))))
+
 tasks.named('test').configure {
     maxHeapSize = '1g'
-    systemProperty('iris.packBenchmarkingSource', file('src/main/java/art/arcane/iris/core/tools/IrisPackBenchmarking.java').absolutePath)
-    systemProperty('iris.irisToolbeltSource', file('src/main/java/art/arcane/iris/core/tools/IrisToolbelt.java').absolutePath)
-    systemProperty('iris.irisCreatorSource', file('src/main/java/art/arcane/iris/core/tools/IrisCreator.java').absolutePath)
-    systemProperty('iris.bukkitChunkGeneratorSource', file('src/main/java/art/arcane/iris/engine/platform/BukkitChunkGenerator.java').absolutePath)
+    maxParallelForks = coreTestForks
 }
 
 java {
@@ -246,30 +246,6 @@ tasks.named('test', Test).configure {
 
 configurations.matching { it.name.startsWith('slim') }.all { }
 
-List<String> requestedTasks = gradle.startParameter.taskNames
-boolean runningOnlyTestTasks = !requestedTasks.isEmpty()
-    && requestedTasks.every { String taskName -> taskName.toLowerCase().contains('test') }
-if (runningOnlyTestTasks) {
-    TaskProvider<Task> processResourcesTask = tasks.named('processResources')
-    tasks.named('classes').configure { Task classesTask ->
-        Set<Object> dependencies = new LinkedHashSet<Object>(classesTask.getDependsOn())
-        dependencies.removeIf { Object dependency ->
-            if (dependency instanceof TaskProvider) {
-                return ((TaskProvider<?>) dependency).name == processResourcesTask.name
-            }
-            if (dependency instanceof Task) {
-                return ((Task) dependency).name == processResourcesTask.name
-            }
-            String dependencyName = String.valueOf(dependency)
-            return dependencyName == 'processResources' || dependencyName.endsWith(':processResources')
-        }
-        classesTask.setDependsOn(dependencies)
-    }
-    processResourcesTask.configure { Task task ->
-        task.enabled = false
-    }
-}
-
 // VolmLib packages that Iris forked into art.arcane.iris.util.project.* or replaced outright. Every
 // class in each of these packages is unreachable from every other class shipped in the Bukkit jar,
 // and none of them is a reflective target: Matter.read() resolves only matter/slices, JarScanner