HASTE V1.1.8.2 — EDGE STABILITY REWORK

- Based on V1.1.8.1 Stable FXAA Hotfix; keeps the V1.1.7.1 terrain, water, bloom and Distant Horizons fixes.
- FXAA now measures edges with compressed, perceptual luminance so high-dynamic-range sun/sky colours do not bypass smoothing as often.
- Raised FXAA strength to 0.85 on Low and higher profiles; Hasteful still leaves it off.
- Enabled Iris' optional TEXTURE_FILTERING feature flag, allowing supported Sodium/Iris builds to expose texture filtering mode. For strongest texture shimmer reduction, select RGSS in Video Settings > Quality > Texture Filtering when that option exists.
- Softened Ethereal SSAO to reduce black contour halos; lowered AO strength/radius, raised sample count, and seeded AO rotation from quantized world position rather than screen-pixel coordinates to reduce visible crawling.
- No temporal jitter or history-buffer pass is used, avoiding the previous black-scene regression.

Limitations: FXAA is spatial anti-aliasing and cannot fully eliminate temporal shimmer or Distant Horizons LOD popping. RGSS texture filtering helps texture aliasing; a reliable full TAA implementation still requires separate in-game validation with the target Iris/DH versions.

Validation: archive integrity, macro/preprocessor balance, updated profile options, and expected AO/FXAA code paths checked statically. No Minecraft/Iris runtime render test was available.
