Phase 13: Rooms + Auto-roof + Beauty + Dirtiness + Cleaning

Three-agent fan-out — Opus pre-wrote Room class, World.rooms/room_at_tile/is_indoor,
4 EventBus signals before dispatch so the slices ran fully parallel.

DECISION: Big-room UX = bump auto-roof cap to 16, banner above. Cabin
(24 tiles) intentionally exceeds cap to exercise the warning path; a
5×5 test shed (9 interior tiles) was added to exercise the roof path.

Room detection (Agent A):
- scenes/world/room.gd — class_name Room, tiles/bounds/is_under_roof,
  contains_tile() bounds-then-list-checked, recompute_bounds()
- scenes/world/room_detector.gd — class_name RoomDetector, BFS 4-dir
  from floor/door tiles, walls/terrain as boundary, doors counted as
  room interior. Detects up to 4× cap; auto-roofs only ≤16.
- World.mark_wall_tile/mark_floor_tile/mark_door_tile hook BFS recompute
- Door._complete() now erases wall-layer stamp + registers door tile
- Designation.TOOL_NO_ROOF paint mode wired (UI button deferred Phase 17)
- EventBus.room_changed / room_too_large signals

Indoor/Shelter (Agent B):
- Pawn._is_sheltered() rerouted: World.is_indoor() first, floor-proxy fallback
- IndoorTintOverlay Node2D — _draw fills roofed-room tiles at α=0.10 warm
- Crop._on_sim_tick skips stage advance when World.is_indoor(tile)

Beauty + Dirtiness + Cleaning + Room thoughts (Agent C):
- BeautySystem sparse map, linear falloff radius=3, Quality multiplier
  (SHODDY 0.5 → LEGENDARY 2.5). Base: Bed +2, Workbench +1, Torch +3, Hearth +4
- DirtinessSystem 0-100, tier crossings (clean<25/dirty<60/filthy≥60)
  emit tile_dirtiness_changed. bump/bump_clean/bump_pawn_traffic API
- CleaningProvider priority=2, KIND_CLEAN toil, 2.5 dirt/tick for ~40 ticks
- Bed/Torch/Workbench _complete() now register with BeautySystem
- 7 room mood thoughts: clean_room (+2), dirty_room (-3), filthy_room (-6),
  beautiful_room (+4), ugly_room (-3), slept_in_room (+3 EVENT, wires Ph 17),
  ate_without_table (-3 EVENT, wires Ph 17)
- Pawn._sync_room_thoughts called from _process_thoughts after cold block,
  defensive against null rooms/systems

Integration recovery (Opus):
- Agent C's BeautySystem/DirtinessSystem/CleaningProvider/IndoorTintOverlay
  instantiation in world.gd never landed (only field declarations + entity
  hooks survived). Added preloads + runtime add_child + autoload bindings +
  CleaningProvider registration + furniture pre-seed in _ready
- Added _prestamp_test_shed_for_room_detector with _spawn_complete_wall/floor
  helpers so a 5×5 visible shed exercises the auto-roof path at boot

MCP runtime verified:
- Rooms: cabin Room#2 size=24 roofed=false (room_too_large fires),
  shed Room#3 size=9 roofed=true (auto-roof active)
- beauty_map size=50 around prebuilt furniture; bed at (47,24) beauty=4.0
- Bram teleported to (36, 25) in shed → indoor=true, sheltered=true,
  thoughts=[clean_room +2], mood=52.0
- Screenshot: shed walls + brown floor visible; cabin warmly torch-lit;
  Spring 1/12 indicator; Day 1 07:52

Delegation: 3× gdscript-refactor (Sonnet) agents in parallel;
integration recovery + MCP verify on Opus.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scenes/ai/toil.gd

@@ -22,6 +22,7 @@ const KIND_EAT: StringName = &"eat"             # Consume pawn.carried_item and
 const KIND_SLEEP: StringName = &"sleep"         # Sleep in a Bed (or on the floor) until pawn.sleep is full
 const KIND_RESCUE: StringName = &"rescue"       # Marker: doctor has visited the downed pawn; single-tick no-op
 const KIND_TREAT: StringName = &"treat"         # Multi-tick: apply medicine until patient HP ≥ revive threshold + no bleeding
+const KIND_CLEAN: StringName = &"clean"         # Multi-tick: reduce dirt on a tile until clean (Phase 13 Cleaning category)
 
 var kind: StringName = KIND_IDLE
 ## Toil-specific params — all values must be int, float, bool, String, Dict, or Array.
@@ -183,6 +184,25 @@ static func treat(patient_path: NodePath) -> Toil:
 	return t
 
 
+## Multi-tick cleaning action on a floor tile.
+## `tile` is the Vector2i world-tile coordinate to clean; stored as int pair for JSON safety.
+## JobRunner._tick_clean reduces DirtinessSystem.dirt_at(tile) by ~2.5/tick until dirt <= 0
+## (40 base ticks per tile; Phase 17 may add skill bonus).
+##
+## data keys:
+##   "clean_x" / "clean_y" — tile coords (ints, JSON-safe)
+##   "started"             — bool; false until first tick
+static func clean_at(tile: Vector2i) -> Toil:
+	var t := Toil.new()
+	t.kind = KIND_CLEAN
+	t.data = {
+		"clean_x": tile.x,
+		"clean_y": tile.y,
+		"started": false,
+	}
+	return t
+
+
 ## Timed crafting action at a Workbench.
 ## `workbench_path` is the NodePath of the Workbench entity (stored as String for JSON safety).
 ## `bill_index` is the index into workbench.bills that this toil should run.