fix: address code review feedback

- Fix incorrect API endpoint paths (removed /api prefix)
- Improve TypeScript strict typing with explicit metadata interfaces
- Update SKILL.md with clear trigger phrases and examples
- Fix README installation path reference
- Add clarification about API URL format (no /api suffix needed)
- Export new metadata type interfaces

packages/skills/gantt/README.md

@@ -14,14 +14,14 @@ Clawdbot skill for querying and analyzing project timelines, task dependencies,
 
 1. **Copy skill to Clawdbot plugins directory:**
    ```bash
-   cp -r ~/src/mosaic-skills/gantt ~/.claude/plugins/mosaic-plugin-gantt
+   cp -r ~/src/mosaic-stack-worktrees/feature-26-gantt-skill/packages/skills/gantt ~/.claude/plugins/mosaic-plugin-gantt
    ```
 
 2. **Set up environment variables:**
    
    Add to your `.env` or shell profile:
    ```bash
-   export MOSAIC_API_URL="http://localhost:3000/api"
+   export MOSAIC_API_URL="http://localhost:3000"
    export MOSAIC_WORKSPACE_ID="your-workspace-uuid"
    export MOSAIC_API_TOKEN="your-api-token"
    ```
@@ -75,9 +75,9 @@ The `gantt-api.sh` helper script can be used directly:
 
 ### Endpoints
 
-- `GET /api/projects` - List projects (paginated)
-- `GET /api/projects/:id` - Get project with tasks
-- `GET /api/tasks` - List tasks with filters
+- `GET /projects` - List projects (paginated)
+- `GET /projects/:id` - Get project with tasks
+- `GET /tasks` - List tasks with filters
   - Query params: `projectId`, `status`, `priority`, `assigneeId`, `page`, `limit`
 
 ### Authentication