fix(atlas): break tidal lock on GJ 299c (Várzea) per ruling

Rotation 576h → 29h. Wiki's Enchente seasonal flooding requires
axial-tilt seasons, incompatible with tidal lock.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/atlas/proposals/GJ299.json

@@ -43,14 +43,14 @@
       "mass_class": "terrestrial",
       "surface_gravity": 0.79,
       "orbital_period_days": 24.0,
-      "rotation_period_hours": 576.0,
+      "rotation_period_hours": 29.0,
       "atmosphere": "standard",
       "biome_summary": "floodplain_temperate",
       "hydrosphere": "liquid_water",
       "economic_role": "agricultural",
       "settlement_pattern": "river_towns",
       "industrial_corridor": null,
-      "notes": "primary inhabited world; tidally locked; wave_3 Brazilian-Portuguese heritage; aquaculture economy; 3-aperture junction; flooding (Enchente) driven by orbital eccentricity at periapsis passage, not axial tilt — wiki seasonal language should be updated to reflect eccentricity/circulation mechanism"
+      "notes": "primary inhabited world; NOT tidally locked (axial tilt drives seasonal flooding, Enchente festival); wave_3 Brazilian-Portuguese heritage; aquaculture export economy; 3-aperture junction"
     },
     {
       "body_id": "GJ299-belt",