Export venues as editor-authorable .tres resources

- tools/export_venues.gd (SceneTree script) saves the three factory scenarios to
  content/venues/<id>.tres via ResourceSaver. The factory stays the source of truth;
  the exported files are what an editor workflow would edit and ship.
- New tests load the files back and check that id, name, event pool, profiles,
  policy (ID/wand), equipment, door-staff lines, shift phases, and locations all
  survive. They also fail when the exported files are missing or stale, so the
  export is re-run after content changes.
- GUT is consciously not adopted: the custom headless runner already covers 157
  assertions without an editor plugin and keeps CI dependency-free. Recorded in
  DONE.md.
- TODO: the planned backlog is complete; only optional future ideas remain.
- README/MEMORY updated. Version 0.2.16.

MEMORY.md

@@ -21,8 +21,9 @@ Session memory for durable decisions, state, and gotchas. Keep concise, remove o
   Windowed control smoke: `godot --path . --script res://src/test/smoke_focus_radial.gd` → exit 0.
 - `main` is in sync with origin. **v0.2.2** tags the session-shell + world-follow-up commit;
   CI builds the portable binaries, NSIS installer, and AppImage on the tag push.
-- Next work: only the optional editor-tooling section remains (GUT plugin, `.tres` venues);
-  everything else in `TODO.md` is complete.
+- **Backlog complete:** every planned TODO section is done and moved to `DONE.md`; `TODO.md`
+  now only lists optional future ideas (live 3D replay, NPC LOD, more venues, real audio, web
+  export). GUT was consciously not adopted (custom runner covers it without an editor plugin).
 - Do not re-open `override_access`. Do not bind wand to `W`. Do not remove the radio easter egg.
 
 ## Current State
@@ -95,6 +96,11 @@ Session memory for durable decisions, state, and gotchas. Keep concise, remove o
   `_begin_incident()` now starts one per focused NPC (`has_open_incident()` guard), verbs call
   `_ensure_incident()`, and `ShiftCoordinator._finish_shift()` closes leftovers as `unresolved`
   before building the review.
+- **Editor-ready venues (2026-10-31):** `tools/export_venues.gd` (a SceneTree script) saves the
+  three factory scenarios to `content/venues/<id>.tres` with `ResourceSaver`; the `.tres` files
+  round-trip through `ResourceLoader` (events, profiles, policy, shift phases, door lines,
+  locations). `test_venue_resources.gd` also fails if the exported files are missing or stale
+  relative to the factory, so re-run the export after changing `ScenarioFactory`.
 - **Vision judge (2026-10-31):** `python3 tools/screen_designs.py judge` sends the capture plus
   its concept mockup to a vision model (`DEFAULT_JUDGE_MODEL = google/gemini-2.5-flash-lite`,
   override with `--model`; `openai/gpt-4o-mini` also works). Reads the repo `.env` via