Preserve legacy Mineralogy upgrades on Forge 1.13.2

[SkyBlade1978]

This keeps OreSpawn at 4.0.6 and makes upgrades safer for existing Forge 1.13.2 worlds.

• recognises saved Mineralogy 1.10, 1.12 and 1.13/5.0.1 lineages
• preserves the selected Cyano engine, numeric settings, ordered rock families and white/blacklists
• gives an existing OreSpawn world profile precedence and ignores stale legacy files for fresh worlds
• writes atomic, repeat-safe upgrade reports without altering source configs or generated chunks
• scans automated client/server logs and adds flowing-fluid fresh/reload coverage

Validation: 121 tests across 31 suites; fresh/reload surface and dynamic-fluid gates; clean Java 8 build, Javadocs and Eclipse setup; 25 structured resources; 16 locales with 357 keys; artifact and disposable client smoke audits.

No API/schema/version bump. The remaining gate is a quick player test before merge.