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/issue/queue/QueueSendToOrchestrator.tsx

@@ -267,7 +267,7 @@ export function QueueSendToOrchestrator({ item, className }: { item: QueueItem;
             </SelectTrigger>
             <SelectContent>
               {sessions.length === 0 ? (
-                <SelectItem value="" disabled>
+                <SelectItem value="__none__" disabled>
                   {formatMessage({ id: 'issues.terminal.session.none' })}
                 </SelectItem>
               ) : (