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/protocol/local_bridge.gd

@@ -93,7 +93,8 @@ func _try_extract_message() -> PackedByteArray:
 		if _pending_length > MAX_MESSAGE_SIZE:
 			# Stream is corrupt — we can't find the next valid frame boundary.
 			# Disconnect rather than silently discarding valid buffered data.
-			push_error("LocalBridge: incoming message too large: %d bytes (max %d) — disconnecting" % [_pending_length, MAX_MESSAGE_SIZE])
+			push_error(
+				"LocalBridge: incoming message too large: %d bytes (max %d) — disconnecting" % [_pending_length, MAX_MESSAGE_SIZE])
 			_corrupt = true
 			_pending_length = -1
 			_read_buffer.clear()