feat(project): add workspace directory configuration and management

- Add projectDir field to Project model for workspace directory management
- Implement workspace directory creation, validation and Git initialization
- Add workspace status query endpoint with directory info and Git status
- Create GitManager for Git repository operations (clone, branch, commit info)
- Add PathValidator for secure path validation and traversal attack prevention
- Implement execution queue with concurrency control for build tasks

- Refactor project list UI to remove edit/delete actions from cards
- Add project settings tab in detail page with edit/delete functionality
- Add icons to all tabs (History, Code, Settings)
- Implement time formatting with dayjs in YYYY-MM-DD HH:mm:ss format
- Display all timestamps using browser's local timezone

- Update PipelineRunner to use workspace directory for command execution
- Add workspace status card showing directory path, size, Git info
- Enhance CreateProjectModal with repository URL validation

apps/web/package.json

@@ -16,6 +16,7 @@
     "@dnd-kit/sortable": "^10.0.0",
     "@dnd-kit/utilities": "^3.2.2",
     "axios": "^1.11.0",
+    "dayjs": "^1.11.19",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-router": "^7.8.0",