Add PLAN verbs and fix dead incident recording

Verbs (PLAN levels 1-3)
- Eye contact: own Level 1 radial slice, logged as "eye contact".
- Recognition is a player decision: "Recognize" sets NPCController.player_recognized,
  writes access evidence, and GameManager only then appends a RECOGNITION artifact.
  It is no longer implied by NPC type.
- Body camera: real flag (off by default) driving the REC overlay; B toggles it and
  a formal warning arms it automatically, writing a body_camera incident event.
- Blocking stations the guard 0.9 m from the person toward the entrance and turns
  to face them, instead of only emitting the escalation level.
- Request reason: Level 3 ask answered from the NPC's seeded dialogue_lines.
- Radial grows to 12 slices (174 px outer radius, centered labels).

Incident recording fix
- IncidentRecorder.start_incident() was never called, so add_event /
  add_access_evidence / add_escalation silently no-opped and the shift review
  always reported zero incidents. Incidents now open on focus (guarded by
  has_open_incident), verbs call _ensure_incident, and ShiftCoordinator closes
  leftovers as "unresolved" before building the review.

Copy and docs
- 9 new string keys (eye contact, body camera, recognition, reason, station).
- README controls, 26-step smoke checklist, test count, status lists.
- TODO section moved to DONE; MEMORY records the verb design and the recorder bug.

Verification: headless 98/98, smoke_plan_verbs.gd + smoke_session_shell.gd +
windowed smoke_focus_radial.gd all pass. Version bumped to 0.2.3.

src/game/ui/hud.gd

@@ -47,6 +47,8 @@ var escalation_label: Label
 
 var _debug_enabled := false
 var _log_lines: Array[String] = []
+var _cam_overlay: Control = null
+var _body_camera_on := false
 
 func _init() -> void:
 	name = "HUD"
@@ -138,11 +140,19 @@ func _init() -> void:
 	add_child(vignette_rect)
 
 	# --- body-camera overlay (REC + shift clock + corner brackets, top right) ---
+	# Toggled by the body-camera flag (PLAN Level 2); off until the guard activates
+	# it or issues a formal warning.
+	_cam_overlay = Control.new()
+	_cam_overlay.name = "BodyCameraOverlay"
+	_cam_overlay.set_anchors_preset(Control.PRESET_FULL_RECT)
+	_cam_overlay.mouse_filter = Control.MOUSE_FILTER_IGNORE
+	_cam_overlay.visible = false
+	add_child(_cam_overlay)
 	var cam_box := VBoxContainer.new()
 	cam_box.set_anchors_preset(Control.PRESET_TOP_RIGHT)
 	cam_box.position = Vector2(-180, 50)
 	cam_box.alignment = BoxContainer.ALIGNMENT_END
-	add_child(cam_box)
+	_cam_overlay.add_child(cam_box)
 	var rec_row := HBoxContainer.new()
 	rec_row.alignment = BoxContainer.ALIGNMENT_END
 	cam_box.add_child(rec_row)
@@ -279,6 +289,16 @@ func set_wand_icon(visible: bool) -> void:
 	if wand_icon:
 		wand_icon.visible = visible
 
+## Show or hide the body-camera overlay (REC + clock + brackets). The flag is a
+## record of the interaction (PLAN Level 2), not a permanent HUD fixture.
+func set_body_camera(on: bool) -> void:
+	_body_camera_on = on
+	if _cam_overlay:
+		_cam_overlay.visible = on
+
+func is_body_camera_on() -> bool:
+	return _body_camera_on
+
 ## Scale the whole HUD text block (accessibility settings).
 func set_font_scale(scale: float) -> void:
 	var clamped := clampf(scale, 0.75, 1.75)
@@ -308,6 +328,7 @@ func _add_corner_brackets(color: Color) -> void:
 	var corners := [
 		Vector2(OFF, OFF), Vector2(vp.x - OFF, OFF), Vector2(OFF, vp.y - OFF), Vector2(vp.x - OFF, vp.y - OFF),
 	]
+	var parent: Node = _cam_overlay if _cam_overlay != null else self
 	for i in 4:
 		var c: Vector2 = corners[i]
 		var flip_x: bool = (i % 2) == 1
@@ -317,13 +338,13 @@ func _add_corner_brackets(color: Color) -> void:
 		h.size = Vector2(LEN, TH)
 		h.position = Vector2(c.x - (LEN if flip_x else 0.0), c.y - (TH if flip_y else 0.0))
 		h.mouse_filter = Control.MOUSE_FILTER_IGNORE
-		add_child(h)
+		parent.add_child(h)
 		var v := ColorRect.new()
 		v.color = color
 		v.size = Vector2(TH, LEN)
 		v.position = Vector2(c.x - (TH if flip_x else 0.0), c.y - (LEN if flip_y else 0.0))
 		v.mouse_filter = Control.MOUSE_FILTER_IGNORE
-		add_child(v)
+		parent.add_child(v)
 
 func set_action_hint(text: String) -> void:
 	hint_label.text = text