fix(client): resolve all gdlint warnings — zero warnings policy

Fix 354 gdlint warnings across 65 files: 194 class-definitions-order
(reorder declarations), 138 max-line-length (split long lines),
22 code issues (unused args, no-else-return, naming). Update .gdlintrc
to exclude addons/ and raise max-public-methods for test files.
No logic changes — declaration order, whitespace, and naming only.

Ticket: #783

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

client/scripts/rendering/tile_renderer.gd

@@ -11,11 +11,11 @@ extends TileMapLayer
 #   (3,0) = object      — teal
 #   (4,0) = reset_plate — amber (#502)
 
+enum TileType { FLOOR = 0, WALL = 1, DOOR = 2, OBJECT = 3, RESET_PLATE = 4 }
+
 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 }
-
 # Wire-format string to TileType mapping
 const TILE_TYPE_MAP: Dictionary = {
 	"floor": TileType.FLOOR,