fix(assets): address PR #117 review comments

- Remove tracked kallast_terrain.npy (HIGH — binary in git)
- Amend D-086: stance + interaction icons delivered, not deferred
- Create ticket #818 for icon_tint.gdshader (client team)
- Fix gas giant profile table: suppress gravity/land%/hydrosphere
- Fix atmosphere_color: null when atmosphere is none
- Fix gas_giant_ringed display as gas_giant in profile table
- Re-scaffold + regenerate Ran system with fixes

.import sidecars: not applicable — gitignored by design (client/**/*.import).
Godot auto-generates on first run.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

wiki/star-systems/GJ-144/bodies/GJ144g-2/index.md

@@ -17,10 +17,7 @@ physical:
   gravity_g: 0.08
   oblateness: 0.0029
   atmosphere: none
-  atmosphere_color:
-  - 0.75
-  - 0.88
-  - 1.0
+  atmosphere_color: null
 terrain:
   land_fraction: 0.837
   polar_ice_lat: 0.177