Photographed the running Plain at its landmarks (a PlayMode probe) and fixed what looked wrong:
- Sky: it was a flat dark-blue colour. Now a heavy grey storm sky (local FLUX, only the part above the horizon, made seamless, no mipmaps): T_Sky_Plain_Storm, DarkMood.PlainSky() through a shared PaintedSky helper.
- Hills: bare brown walls with a brick-like rock pattern. The rock layer is now CaveRock and only on sheer faces (slope > 42); 200 dead olives (Meshy) and pines scattered on the slopes outside the playable area (HillDressing group).
- Paving: the crossroads and Threshing Floor were glaring white; they have their own dimmer material (M_ZoneA_Paving, ThreshingFloorPaving texture), no longer sharing M_ZoneA_Stone with the town.
- NavMesh: the Plain's NavMesh is baked at run time from colliders; two rock meshes (MSH_fwOF_Rock_01, Stone_01) were not readable in a built game, so they were silently left out and an error was logged. Both are now Read/Write enabled.
- Already done earlier: gate with doors, treeline fence, waypoint dais, no birches/flowers.
- Ledger AI-655. Build 2026-10-26_1615, EditMode 267, PlayMode 10.