feat: Enhance CLI output handling with structured Intermediate Representation (IR)

- Introduced `CliOutputUnit` and `IOutputParser` interfaces for unified output processing.
- Implemented `PlainTextParser` and `JsonLinesParser` for parsing raw CLI output into structured units.
- Updated `executeCliTool` to utilize output parsers and handle structured output.
- Added `flattenOutputUnits` utility for extracting clean output from structured data.
- Enhanced `ConversationTurn` and `ExecutionRecord` interfaces to include structured output.
- Created comprehensive documentation for CLI Output Converter usage and integration.
- Improved error handling and type mapping for various output formats.

ccw/src/core/server.ts

@@ -357,7 +357,7 @@ export async function startServer(options: ServerOptions = {}): Promise<http.Ser
   const tokenManager = getTokenManager();
   const secretKey = tokenManager.getSecretKey();
   tokenManager.getOrCreateAuthToken();
-  const unauthenticatedPaths = new Set<string>(['/api/auth/token', '/api/csrf-token']);
+  const unauthenticatedPaths = new Set<string>(['/api/auth/token', '/api/csrf-token', '/api/hook']);
 
   const server = http.createServer(async (req, res) => {
     const url = new URL(req.url ?? '/', `http://localhost:${serverPort}`);