Regenerate screenshots; document NPC pipeline and confirmed assets

Ten of the eleven README captures are refreshed (the prop gallery is unchanged). README gains an NPC character-model subsection and a 'Confirmed game assets' section with linked, audited textures/models; architecture Level 2 lists npc_pipeline.py and asset_pipeline.py.

MEMORY.md

@@ -56,6 +56,16 @@ Session memory for durable decisions, state, and gotchas. Keep concise, remove o
   `--variants N` — generates N alternatives saved as `<stem>-1..N.png` (N=1
   keeps the unsuffixed path). Python tooling tests still pass (exit 0).
 
+- **Screenshots + docs (2026-11-01):** regenerated the eleven README captures
+  (`capture_screenshots.gd` + `capture_prop_gallery.gd`) — ten changed, the
+  prop gallery is byte-identical (props unchanged). README gained an NPC
+  character-model subsection, a "Confirmed game assets" section (linked
+  `game_ready` textures, generated models, NPC maps), and refreshed
+  dev-status / not-yet lines; `docs/architecture.md` Level 2 now lists
+  `npc_pipeline.py` + `asset_pipeline.py` and the confirmed-asset locations.
+  **Foreign, left uncommitted:** a TODO section "Bug Fix NPCs walking backwards"
+  from another agent — do not touch or commit it.
+
 - Repo: `/run/media/system/DATA/Documents/06-games/security-game` (also reachable at
   `/var/home/zwitschi/Documents/06-games/security-game`). Godot: `~/.local/bin/godot` (4.3.stable).
   Tests: `godot --headless --path . --script res://src/test/test_runner.gd` → **177/177**.