Rakoun: DarkFantasy Visuals

First public release of Rakoun Dark Visuals for Minecraft 1.20.1 (Iris / Oculus).

**Rendering**
- Screen-space reflections on water, glass and wet surfaces
- TAA, motion blur, SSAO, volumetric light, god rays, volumetric clouds
- HDR pipeline with ACES tonemapping and auto-exposure

**Atmosphere**
- Deep dark nights with warm, flickering lantern light
- Full rain system: wet materials, puddles, ripples, screen droplets, storm winds
- Procedural water with waves, shore foam, depth tint and caustics
- Drifting ground mist, blood-red twilights

**Signature features**
- Procedural block blending (organic transitions between ground blocks)
- Ground vegetation creeping up block bases

**Misc**
- 3 quality profiles (Performance / Balanced / Quality)
- French and English shader menu
- Dedicated Nether and End atmospheres
- Mod support via block tags (Iris 1.7+) and built-in lists

Known limitations are listed in the project description. Feedback welcome.