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/tools/cli-config-manager.ts

@@ -13,6 +13,7 @@ export interface CliToolConfig {
   enabled: boolean;
   primaryModel: string;      // For CLI endpoint calls (ccw cli -p)
   secondaryModel: string;    // For internal calls (llm_enhancer, generate_module_docs)
+  tags?: string[];           // User-defined tags/labels for the tool
 }
 
 export interface CliConfig {
@@ -204,7 +205,8 @@ export function updateToolConfig(
   const updatedToolConfig: CliToolConfig = {
     enabled: updates.enabled !== undefined ? updates.enabled : currentToolConfig.enabled,
     primaryModel: updates.primaryModel || currentToolConfig.primaryModel,
-    secondaryModel: updates.secondaryModel || currentToolConfig.secondaryModel
+    secondaryModel: updates.secondaryModel || currentToolConfig.secondaryModel,
+    tags: updates.tags !== undefined ? updates.tags : currentToolConfig.tags
   };
 
   // Save updated config