diff --git a/openspec/changes/tool-instances/tasks.md b/openspec/changes/tool-instances/tasks.md
index b064d4f..3e32693 100644
--- a/openspec/changes/tool-instances/tasks.md
+++ b/openspec/changes/tool-instances/tasks.md
@@ -2,19 +2,19 @@
 
 ## Phase 1: Backend Model & Database
 
-- [ ] **Task 1.1**: Create ToolInstance model
+- [x] **Task 1.1**: Create ToolInstance model
   - Create `src/models/tool_instance.py`
   - Fields: id, name, display_name, tool_type_id, repository_id, project_id, owner_id, status, container_id, compose_path, url, port, timestamps
   - Add relationship to ToolType and GitRepository
   - Add to `models/__init__.py`
 
-- [ ] **Task 1.2**: Create Alembic migration
+- [x] **Task 1.2**: Create Alembic migration
   - Generate migration for tool_instances table
   - Add indexes for owner_id, repository_id, status
 
 ## Phase 2: Backend Docker Service
 
-- [ ] **Task 2.1**: Create Docker service
+- [x] **Task 2.1**: Create Docker service
   - Create `src/services/docker.py`
   - Function: `render_compose_template(template, variables)`
   - Function: `execute_compose_command(compose_path, action)`
@@ -22,18 +22,18 @@
   - Function: `get_container_logs(container_id, tail=100)`
   - Error handling and cleanup
 
-- [ ] **Task 2.2**: Create instance directory structure
+- [x] **Task 2.2**: Create instance directory structure
   - Base path: `data/instances/{instance_id}/`
   - Render compose file to `docker-compose.yml`
   - Ensure directory exists and is writable
 
 ## Phase 3: Backend API
 
-- [ ] **Task 3.1**: Create instances API module
+- [x] **Task 3.1**: Create instances API module
   - Create `src/api/tool_instances.py`
   - Import required dependencies
 
-- [ ] **Task 3.2**: Implement create instance endpoint
+- [x] **Task 3.2**: Implement create instance endpoint
   - POST /projects/{id}/repositories/{id}/instances
   - Validate tool_type_id exists
   - Generate unique instance name
@@ -41,115 +41,115 @@
   - Save to database (status: pending)
   - Return instance metadata
 
-- [ ] **Task 3.3**: Implement list instances endpoint
+- [x] **Task 3.3**: Implement list instances endpoint
   - GET /projects/{id}/repositories/{id}/instances
   - Filter by repository
   - Include tool type info
 
-- [ ] **Task 3.4**: Implement get instance endpoint
+- [x] **Task 3.4**: Implement get instance endpoint
   - GET /projects/{id}/repositories/{id}/instances/{id}
   - Include real-time status from Docker
 
-- [ ] **Task 3.5**: Implement lifecycle endpoints
+- [x] **Task 3.5**: Implement lifecycle endpoints
   - POST .../start - execute docker compose up
   - POST .../stop - execute docker compose stop
   - POST .../restart - execute docker compose restart
   - Update status in database
 
-- [ ] **Task 3.6**: Implement delete instance endpoint
+- [x] **Task 3.6**: Implement delete instance endpoint
   - DELETE /projects/{id}/repositories/{id}/instances/{id}
   - Execute docker compose down -v
   - Remove instance directory
   - Delete database record
 
-- [ ] **Task 3.7**: Implement user sessions endpoint
+- [x] **Task 3.7**: Implement user sessions endpoint
   - GET /users/me/sessions
   - Return all running instances for current user
   - Include tool type icon and names
 
-- [ ] **Task 3.8**: Register router
+- [x] **Task 3.8**: Register router
   - Add tool_instances router to main.py
 
 ## Phase 4: Frontend State Management
 
-- [ ] **Task 4.1**: Create session store
+- [x] **Task 4.1**: Create session store
   - Create `src/state/sessions.ts`
   - Define Session interface
   - Create atom for sessions list
   - Add helper functions
 
-- [ ] **Task 4.2**: Create sessions API client
+- [x] **Task 4.2**: Create sessions API client
   - Create `src/api/sessions.ts`
   - Functions: list, create, start, stop, restart, delete, getStatus
   - TypeScript interfaces
 
 ## Phase 5: Frontend Components
 
-- [ ] **Task 5.1**: Update AppShell with sessions
+- [x] **Task 5.1**: Update AppShell with sessions
   - Add "Sessions" section in navigation
   - Show active sessions with icons
   - Status indicators (green dot)
   - Click opens tool URL
 
-- [ ] **Task 5.2**: Create LaunchToolDialog
+- [x] **Task 5.2**: Create LaunchToolDialog
   - Select tool type from dropdown
   - Enter display name (optional)
   - Create instance on submit
   - Show creation progress
 
-- [ ] **Task 5.3**: Create InstanceList component
+- [x] **Task 5.3**: Create InstanceList component
   - List instances for a repository
   - Show status, name, tool type
   - Action buttons: start/stop/restart/delete
   - Open URL button
 
-- [ ] **Task 5.4**: Create InstanceCard component
+- [x] **Task 5.4**: Create InstanceCard component
   - Compact card showing instance info
   - Status badge
   - Quick actions
 
 ## Phase 6: Frontend Pages
 
-- [ ] **Task 6.1**: Add instances to repository page
+- [x] **Task 6.1**: Add instances to repository page
   - Add "Instances" tab or section
   - Show InstanceList
   - Add "Launch Tool" button
 
-- [ ] **Task 6.2**: Create sessions dropdown
+- [x] **Task 6.2**: Create sessions dropdown
   - Add to header or nav
   - Quick access to active sessions
   - Show status indicators
 
 ## Phase 7: Integration & Polish
 
-- [ ] **Task 7.1**: Add instance status polling
+- [x] **Task 7.1**: Add instance status polling
   - Poll status every 5 seconds
   - Update session store
   - Reflect in UI
 
-- [ ] **Task 7.2**: Add error handling
+- [x] **Task 7.2**: Add error handling
   - Docker failures
   - Template rendering errors
   - Network errors
 
-- [ ] **Task 7.3**: Add loading states
+- [x] **Task 7.3**: Add loading states
   - Creating instance
   - Starting/stopping
   - Deleting
 
 ## Phase 8: Quality Gates
 
-- [ ] **Task 8.1**: Backend tests
+- [x] **Task 8.1**: Backend tests
   - ruff check
   - mypy check
   - pytest
 
-- [ ] **Task 8.2**: Frontend tests
+- [x] **Task 8.2**: Frontend tests
   - typecheck
   - lint
   - build
 
-- [ ] **Task 8.3**: Manual testing
+- [x] **Task 8.3**: Manual testing
   - Create instance
   - Start/stop/restart
   - Delete