Implement TODO backlog: LATE phase fix, protester, CALL_SOMEONE, door lock, flashlight, persistence, navmesh, JSON localization, and release tooling

- Fix LATE shift phase (start 700s) so the violent-threat event is reachable
- Add PROTESTER archetype (rules, profile, colors, events in public venues)
- Add CALL_SOMEONE reaction (FSM -> ARGUING, influencer/trespasser/protester weights)
- Door lock: DoorState core class, L binding, red/green visual indicator,
  locked doors thwart FORCE_ENTRY
- Flashlight: G binding, SpotLight3D, perception radius bonus at evening/late
- Persistence: save shift results via Save autoload, history + best score on
  review screen, round-trip test
- Navigation: flat NavigationRegion3D navmesh, NavigationAgent3D path following
  with direct-movement fallback; steps made visual-only so NPCs reach entrance
- Localization: strings moved to content/strings.en.json (loader keeps
  lookup/fmt signatures; coverage test over all keys)
- Distribution: export_presets.cfg (Linux/Windows/macOS), tools/build_releases.sh,
  docs/RELEASING.md, prominent README Downloads section
- Remove stale signal_bus.gd (invalid static-signal experiment)
- Tests: 53 passing across 9 suites

DONE.md

@@ -74,6 +74,69 @@ Completed task sections moved from `TODO.md`. Sections are moved only when every
 - [x] Set up GitHub Actions to run headless tests on push (`ci.yml`).
 - [x] Add a smoke-test checklist for launching one full shift (in `README.md`).
 
+## Bug Fixes — LATE shift phase
+
+- [x] Add a `Rules.Phase.LATE` entry (`start_s` 700) to `shift_phases` in all three venues.
+- [x] Confirm the LATE-tagged `violent_emergency_event` is now pulled from `EventScheduler.pull_due`.
+- [x] Add a test asserting the LATE phase is reached and the event is eligible in phase.
+
+## Missing PLAN Features — Protester NPC
+
+- [x] Add `PROTESTER` to `Rules.NpcType` and `NPC_TYPE_NAMES`.
+- [x] Add a protester profile (id `"protester"`) with ARGUE/IGNORE/RECORD/CALL_SOMEONE reactions.
+- [x] Add a `TYPE_COLORS` entry for `PROTESTER` in `npc_avatar.gd`.
+- [x] Add routine protester events to the Hollywood Boulevard and TV Studio event pools.
+- [x] Add scenario tests asserting the protester profile and events exist.
+
+## Missing PLAN Features — “Call someone else” reaction
+
+- [x] Add `CALL_SOMEONE` to `Rules.Reaction`.
+- [x] Handle `CALL_SOMEONE` in `NPCController._update_state_for_reaction` (transitions to ARGUING).
+- [x] Give influencer, trespasser, and protester profiles CALL_SOMEONE weights.
+- [x] Add a reaction log line in `GameManager` and a `Strings` entry.
+- [x] Add a test that CALL_SOMEONE can be rolled and updates the FSM.
+
+## Missing PLAN Features — Door lock/secure
+
+- [x] Add a `DoorState` core class with locked/unlocked state and `attempt_force()`.
+- [x] Add a visible door lock indicator (green open / red locked) to the world.
+- [x] Add the `L` key binding toggling the door lock, with HUD indication.
+- [x] Make FORCE_ENTRY reactions fail while the door is locked (thwarted outcome).
+- [x] Add `Strings` entries and a headless test for the lock state machine.
+
+## Missing PLAN Features — Flashlight
+
+- [x] Add a `G` key binding toggling the guard's flashlight.
+- [x] Attach a `SpotLight3D` to the guard that toggles with the flashlight.
+- [x] Widen NPC perception radius while lit at evening/late phases (`perceive_guard` bonus).
+- [x] Add `Strings` entries and a headless test for the perception effect.
+
+## Persistence
+
+- [x] Call `Save.save_shift_result(review)` from `GameManager._on_shift_ended`.
+- [x] Load past results and show record count + best score on the shift review screen.
+- [x] Add a test that a saved review round-trips through the `Save` helper.
+
+## Navigation
+
+- [x] Add a `NavigationRegion3D` with a hand-authored flat navmesh covering sidewalk, steps, and entrance.
+- [x] Switch `NpcAvatar` from direct movement to `NavigationAgent3D` path following (with direct-movement fallback).
+- [x] Keep per-intent waypoint and returning-trespasser re-targeting on the navmesh.
+- [x] Make the step geometry visual-only (no collider) so pathing to the entrance works.
+
+## Localization — JSON strings
+
+- [x] Move the string table to `res://content/strings.en.json` (41 keys).
+- [x] Load the JSON at startup; `Strings.lookup`/`Strings.fmt` signatures unchanged.
+- [x] Update the strings tests to confirm every JSON key resolves to a real value.
+
+## Distribution — Downloadable executables
+
+- [x] Commit `export_presets.cfg` with Linux, Windows, and macOS desktop presets.
+- [x] Add `tools/build_releases.sh` for headless release exports.
+- [x] Add `docs/RELEASING.md` with template installation, build, and Gitea release steps.
+- [x] Add a prominent **Downloads** section at the top of `README.md` linking to the release page.
+
 ## Core Simulation — NPC Perception
 
 - [x] Implement a perception pass so NPCs react to the guard's gestures and proximity.