Fixed config parsing to preserve permission rule order

Improvements

• CoreFixed OpenRouter DeepSeek reasoning output handling.
• CoreSent an opencode/<version> User-Agent header with HTTP requests.
• TerminalAdded Zed editor selection support for editor context.
• TerminalShow a /connect tip when no models are configured.
• TerminalFixed editor lock detection to ignore locks from unrelated workspaces.@jjjermiah