AquaReal V7 - Metal stability + emissive ores
- Keeps the working rain wetness/puddle system.
- Metals retain their texture and use controlled AquaReal-style SSR/environment reflection.
- Metal SSR origin is offset to avoid self-hit horizontal bands.
- Metal gloss exponent reduced from 100 to 32 to remove black/sparkly artifacts.
- Vanilla overworld/nether ores and ancient debris are mapped as emissive blocks.
- Emissive ores are boosted above the bloom threshold so BLOOM produces a visible glow.
- Does not add SARP shader code or duplicate dither/hash functions.
