Port OreSpawn 4.0.16 to Forge 26.2

[SkyBlade1978]

Summary

Ports the complete OreSpawn 4.0.8 through 4.0.16 campaign to Minecraft 26.2 / Forge 65.1.0, finishing at 4.0.16.2602001.

This includes:

• persistent 32/1024-character Ore and Fluid editor fields;
• safe replacement of provider-declared natural terrain hosts before later authored features;
• actual-world-Y Stable Layers rock eligibility;
• dynamic-registry biome weights and exact managed-ore filters;
• public sampler surface-height alignment;
• provider biome include/exclude API parity and namespaced geome editor IDs;
• exposed Snow and surface Ice handling;
• stable quart-biome attribution shared by generated geology, sampling and family-restricted ores;
• GameTest-owned benchmark reporting and shutdown.

Forge 26.2 adaptations

The port retains Forge 65 official naming and reobf=false, Java 25, Minecraft 26.2 Identifier and biome APIs, the optimized geology-write path, four access transformers, target pack metadata and merged Buildship output. The ForgeGradle 7 release scaffold supplies deterministic version-only artifacts, checksums, Maven bundle verification, pinned CI/CodeQL/wrapper/tag workflows, an isolated Mineralogy migration oracle and a checksum-sealed zero-rule Forge 65 Mavenizer qualification.

The Windows OSHI/Perflib diagnostic allowance is limited to five exact signatures reproduced by two plain Forge controls with empty mod directories. All other runtime errors remain fatal to the scanner.

Validation

• 141 tests across 33 suites; zero failures, errors or skips
• 41 independently parsed JSON/mcmeta files
• 16 locales with 359 matching keys
• all 21 documentation exports in byte parity
• complete offline release and Eclipse/Buildship lifecycles
• cold exact-checkout rebuild plus genuinely empty Gradle-home Forge bootstrap and idempotence rerun
• exact official Forge 65 packaged client and server fresh/reload tests
• client world-settings/editor navigation, long-field round trip, world creation, render, save and reload
• preferred seed -4965128775892001975: 81 chunks, all eight managed vanilla ores nonzero and zero out-of-range placements
• matched 81-chunk medians: Sky +5.4% and Cyano +7.4% versus vanilla, below the 10% investigation threshold
• clean scanned logs/crash directories and no surviving runtime processes
• Java class major 69, metadata, access transformers, documentation/locales and fixture/tool/test/world exclusions audited in all three jars

API major 1, schemas 4/6/5, registry IDs, profile and migration semantics, provider JSON meanings, existing chunks and compatibility range [4.0.6,5.0.0) are preserved.

The exact candidate 9ff9df0598c89b9d5079b64a1541cbb1cedca497 received manual acceptance. This PR does not tag, publish, merge, or directly update the MMD branch.