fix(client): address PR #54 round 2 — stale comments, D-076 test, GROUND_FLOOR const

Remove stale smoothing re-enable comments from main.gd (Hoshe #1).
Add DIALOGUE_MAX_WIDTH=640 regression test (Hoshe #2).
Extract GROUND_FLOOR const in tile_renderer (Tyre #3).
Clean up entity_renderer migration comment (Hoshe #3).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

client/scripts/main.gd

@@ -26,7 +26,7 @@ var _last_dialogue_tick: int = -1
 var _last_confrontation_tick: int = -1  # Deduplicate confrontation_monologue signals within same tick
 var _known_recognition_ids: Dictionary = {}  # D-067: entity_ids that have already chimed
 var _flash_rect: ColorRect = null  # #502/#501: ephemeral screen flash overlay (shared: teleport preempts amber)
-var _teleport_in_progress: bool = false  # #501: defer smoothing re-enable by one frame after teleport
+var _teleport_in_progress: bool = false  # #501/#117: forces camera snap (not lerp) on next _process frame
 var _pending_record_inputs: Array = []   # #507: accumulates server-bound inputs across frames; flushed into record_tick() on snapshot arrival
 var _current_zone: String = ""           # D-073 (#529): zone tracking for ambient crossfades
 
@@ -47,7 +47,7 @@ func _ready() -> void:
 	# Camera anchor: snap to player position before the first frame renders.
 	# In test mode poll_snapshot() returns synchronously — position is set
 	# immediately. In live mode the snapshot isn't available yet — _process
-	# handles it. No reset_smoothing() needed: smoothing is OFF.
+	# handles it via the lerp block in _process().
 	var first_snapshot: Variant = SimBridge.poll_snapshot()
 	if first_snapshot != null:
 		GameState.apply_snapshot(first_snapshot)

client/scripts/rendering/entity_renderer.gd

@@ -17,7 +17,7 @@ const TILE_SIZE: int = Constants.TILE_SIZE
 const ENTITY_WIDTH: int = 24
 const ENTITY_HEIGHT: int = 32
 const ENTITY_OFFSET_X: float = (TILE_SIZE - ENTITY_WIDTH) / 2.0   # center horizontally
-const ENTITY_OFFSET_Y: float = (TILE_SIZE - ENTITY_HEIGHT) / 2.0  # center vertically for placeholder. Migration: when real sprites land, switch to bottom-anchor (TILE_SIZE - ENTITY_HEIGHT) for correct y-sort ordering.
+const ENTITY_OFFSET_Y: float = (TILE_SIZE - ENTITY_HEIGHT) / 2.0  # center vertically for placeholder. Migration: switch to bottom-anchor (offset = TILE_SIZE - ENTITY_HEIGHT) when real sprites land for correct y-sort ordering.
 
 # Lerp speed — framerate-independent exponential smoothing.
 # At 12.0: ~70% there after 0.1s, ~95% after 0.25s.

client/scripts/rendering/tile_renderer.gd

@@ -12,6 +12,7 @@ extends TileMapLayer
 #   (4,0) = reset_plate — amber (#502)
 
 const TILE_SIZE: int = Constants.TILE_SIZE
+const GROUND_FLOOR: int = 0  # Server floor level for ground — filter target in update_tiles()
 
 enum TileType { FLOOR = 0, WALL = 1, DOOR = 2, OBJECT = 3, RESET_PLATE = 4 }
 
@@ -78,10 +79,10 @@ func update_tiles(tiles: Array) -> void:
 		if not tile_data.has("x") or not tile_data.has("y") or not tile_data.has("type"):
 			continue
 
-		# Floor-level filter: only render tiles at floor level 0 (ground).
-		# Floor level 1+ tiles are for upper floors (future multi-floor nodes).
+		# Floor-level filter: only render tiles at ground floor.
+		# Upper floor tiles (level 1+) are for future multi-floor nodes.
 		var tile_z: int = tile_data.get("z", 0)
-		if tile_z != 0:
+		if tile_z != GROUND_FLOOR:
 			continue
 
 		var tile_type_str: String = tile_data.type

client/tests/test_ui_framework_sprint15.gd

@@ -25,6 +25,16 @@ func after_test() -> void:
 		_instance = null
 
 
+# -------------------------------------------------------------------------
+# D-076: Layout constants
+# -------------------------------------------------------------------------
+
+func test_dialogue_max_width_matches_d076() -> void:
+	# D-076 (OQ-29): DIALOGUE_MAX_WIDTH must be 640px. Regression guard — was
+	# incorrectly set to 1200 before review round 1.
+	assert_that(Constants.DIALOGUE_MAX_WIDTH).is_equal(640)
+
+
 # -------------------------------------------------------------------------
 # D-049: Z-layer scene hierarchy
 # -------------------------------------------------------------------------