v0.1.3

Fixed

• Extension host: replace require() with top-level ES imports for node built-ins
• Extension host: remove download progress listener after server start (potential leak)
• Extension host: null-safe manager access with local reference capture
• Commands: persist approval mode index in globalState across reloads
• Commands: newThread now auto-opens the chat panel
• Commands: diff parse failure now includes the file path in error message
• HTTP client: explicit "utf8" encoding in Content-Length header
• HTTP client: timeout error message now includes method and path
• HTTP client: getThread returns TurnRecord[] instead of unknown[]
• Process manager: restart() polls port release instead of hardcoded 500ms sleep
• Process manager: stop() waits for graceful shutdown response before force-kill
• Process manager: clean up old CodewhaleClient listeners before creating new instance
• Diff parser: eliminate duplicate regex in hunk header parsing
• Diff parser: reverseApply uses in-place splice (O(n) instead of O(n*hunks))
• Webview bridge: decompose 250+ line _handleMessage into dispatch map with 16 handlers
• Webview bridge: replace hardcoded 300ms delay with turn-status polling in _fetchUsage
• Webview bridge: use named SSE handlers with precise off() instead of removeAllListeners
• Webview bridge: warn on dropped postMessage (silent failure when panel is null)