HASTE SHADER V1.1.9 — CINEMATIC CLOUDS & ATMOSPHERE

Based on Haste Shader V1.1.8.9 Rain Rendering Fix (which includes the V1.1.8.8
root-pinned vegetation change and V1.1.8.7 depth-aware, halo-safe FXAA path).

Changes in this release:
- Reworked the procedural cloud field with gentle domain warping and restrained
  billow/wisp terms, preserving the broad FBM cloud language rather than replacing
  it with separate geometric blobs.
- Updated the cloud-shadow density field with matching warp/octave/detail math so
  moving cloud shadows track the new cloud masses more closely.
- Added subtle solar edge-scattering to the flat procedural clouds and a restrained
  view-dependent silver lining to volumetric clouds.
- Improved volumetric cloud crown falloff and kept cloud shading cool in shadow,
  with warm light during sunrise/sunset.
- Extended the cloud-to-horizon fade so clouds blend into atmospheric haze more
  gradually instead of terminating in a visible band.
- Increased volumetric ray-march steps and detail only in Max/Ethereal; lighter
  presets retain non-volumetric clouds to protect performance.
- Preserved Distant Horizons water, weather/rain rendering, FXAA silhouette
  protection, bloom and the grass root-pinning code.

Validation:
- ZIP integrity and expected shader entry checks passed.
- Matched the cloud field warp and detail equations between final.fsh and
  lib/cloud_shadows.glsl by source-level verification.
- Basic preprocessor-brace and profile-value checks passed.
- Not compiled or rendered inside Minecraft in this environment. In-game testing
  is still required, especially for cloud-shadow alignment and performance on Max.
