Add accessibility pass: escalation meter and working HUD font scale

- Escalation cue now includes a shape meter and numeric level
  ("Escalation: Blocking [###--] L3/5") in addition to the colour and name, so it
  reads in grayscale. Hud.escalation_meter(level) is pure and tested.
- HUD font scale from settings actually works: set_font_scale() resizes fonts via
  theme overrides instead of Control.scale, which pushed the right-anchored clock
  label off-screen. It now covers the top, log, target, hint, time, mode,
  escalation, cooldown, and debug labels.
- Settings load before the HUD exists, so _ready() re-applies player settings after
  _build_ui(); previously a saved font scale was ignored until the next apply.

Tests/docs
- Headless suite 134 -> 139 (test_accessibility.gd).
- Verified visually at 1.4x scale: no overflow, meter readable.
- README, TODO section moved to DONE, MEMORY. Version 0.2.9.

MEMORY.md

@@ -21,8 +21,8 @@ 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: `TODO.md` accessibility (grayscale-safe escalation cues, HUD font scale in settings),
-  then scenario content gaps.
+- Next work: `TODO.md` scenario content gaps (Joke Shop / Studio / Building events), then the
+  remaining polish and tooling items.
 - Do not re-open `override_access`. Do not bind wand to `W`. Do not remove the radio easter egg.
 
 ## Current State
@@ -95,6 +95,11 @@ 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.
+- **Accessibility (2026-10-31):** escalation text is `"<name>  [###--] L3/5"` via
+  `Hud.escalation_meter(level)` (pure, tested) so the cue survives grayscale. HUD font scale uses
+  `add_theme_font_size_override` on the core labels (`set_font_scale`), **not** `Control.scale`,
+  which pushed the right-anchored clock label off-screen. Settings load before `_build_ui()`, so
+  `_ready()` re-applies player settings after the HUD exists.
 - **Audio (2026-10-31):** `AudioFeedback.start_crowd_bed()` builds a 4 s looping `AudioStreamWAV`
   (one-pole-filtered noise + 68/103 Hz drone, seeded) and `set_crowd_level(mood)` maps 0..1 to
   -34..-12 dB. `play_radio_open/close` push short filtered-noise bursts. All procedural; with a