Release Mineralogy 6.1.2 for Minecraft 1.18.2

[SkyBlade1978]

Summary

Release Mineralogy 6.1.2.118021 for Minecraft 1.18.2.

• repairs the malformed optional entries in the three mining tags, restoring normal mining speed and drops for Mineralogy rocks and their derived blocks;
• synchronizes the retained rock-furnace block entity during lit/unlit state changes, eliminating the block-state mismatch warning while preserving inventory, fuel, progress, facing, and identity;
• retains the existing OreSpawn 4.0.10.118021 provider, worldgen, configuration, migration, registry, recipe, and locale contracts.

Validation

• 55 JUnit tests pass;
• mining tags load with exactly 1,133 pickaxe blocks, 123 iron-tier blocks, and 329 stone-tier blocks;
• full release, Javadoc, dependency, artifact, checksum, and Eclipse production-classpath gates pass;
• exact packaged Forge 40.3.0 fresh/reload probes verify diamond-pickaxe harvesting and warning-free furnace transitions/reload;
• main candidate SHA-256: 695280945EA8BBB5D6324D2311CAC93CA0DB2E21528621A9E8FC4E7EE302E47F.

This is a focused bug-fix release. It does not change Mineralogy registry identities, OreSpawn rules, world generation, existing configuration files, or migration behavior.