feat: Add global relationships management to GlobalSymbolIndex

- Introduced a new schema version (v2) with a global_relationships table.
- Implemented CRUD operations for file relationships, including update and delete functionalities.
- Added query capabilities for relationships by target and symbols.
- Created migration logic from v1 to v2 schema.
- Enhanced tests for global relationships, covering various scenarios including insertion, querying, and deletion.

docs: Add update-single command for generating module documentation

- Created a new command to generate manual-style documentation (CLAUDE.md) for a single module.
- Detailed execution process and implementation phases for the command.
- Included usage examples and error handling guidelines.

feat: Implement team command for CLI interface

- Added a new team command for logging and retrieving messages in a team message bus.
- Supported subcommands for logging, reading, listing, and checking status of messages.
- Included error handling and JSON output options.

test: Add comprehensive tests for global relationships

- Developed extensive tests for the global_relationships table in GlobalSymbolIndex.
- Covered schema creation, migration, CRUD operations, and performance benchmarks.
- Ensured project isolation and validated query functionalities for relationships.

ccw/frontend/src/components/lite-tasks/LiteContextContent.tsx

@@ -248,7 +248,7 @@ function ContextContent({
                 <div className="space-y-0.5 pl-2 max-h-32 overflow-y-auto">
                   {ctx.relevant_files.map((f, i) => {
                     const filePath = typeof f === 'string' ? f : f.path;
-                    const reason = typeof f === 'string' ? undefined : (f.rationale || f.reason);
+                    const reason = typeof f === 'string' ? undefined : f.reason;
                     return (
                       <div key={i} className="group flex items-start gap-1 text-muted-foreground hover:bg-muted/30 rounded px-1 py-0.5">
                         <span className="text-primary/50 shrink-0">{i + 1}.</span>