## Phase 0: Preparation

- [ ] 0.1 Verify `dev` builds cleanly (backend `py_compile`, frontend `tsc` + `vite build`)
- [ ] 0.2 Document current file sizes for before/after comparison
- [ ] 0.3 Create component directory stubs if missing:
  - `apps/web/src/components/features/tool-workshop/`
  - `apps/web/src/components/features/config-profiles/`
  - `apps/web/src/components/features/terminal/`
  - `apps/web/src/components/features/settings/`
  - `apps/web/src/components/features/ssh-keys/`
  - `apps/api/src/services/git/operations.py` (extract from router)
  - `apps/api/src/services/config/crud_service.py`
  - `apps/api/src/services/config/resolver_service.py`

## Phase 1: Backend — Router Slimming

### 1.1 Terminal WebSocket Extraction
- [ ] 1.1.1 Create `api/tool/terminal.py` from terminal WebSocket handlers in `api/tool/tool_instances.py`
- [ ] 1.1.2 Move `_handle_terminal_websocket`, `_get_user_from_websocket`, `SessionRef` class
- [ ] 1.1.3 Update `main.py` to include `terminal_router` from `api.tool.terminal`
- [ ] 1.1.4 Remove terminal routes from `api/tool/tool_instances.py`
- [ ] 1.1.5 Verify `py_compile` passes

### 1.2 Instance Lifecycle Extraction
- [ ] 1.2.1 Create `api/tool/tool_lifecycle.py` for start/stop/restart/delete endpoints
- [ ] 1.2.2 Extract lifecycle endpoints from `api/tool/tool_instances.py`
- [ ] 1.2.3 Update `main.py` to include lifecycle router
- [ ] 1.2.4 Verify `py_compile` passes

### 1.3 Git Repository Router
- [ ] 1.3.1 Create `services/git/operations.py` for git command orchestration
- [ ] 1.3.2 Extract `clone_repo`, `fetch_repo`, `pull_repo`, `push_repo`, `merge_repo`, `commit_repo` helpers
- [ ] 1.3.3 Update `api/project/git_repositories.py` to call service functions
- [ ] 1.3.4 Verify `py_compile` passes

### 1.4 Config Profile Router
- [ ] 1.4.1 Extract CRUD helpers into `services/config/crud_service.py`
- [ ] 1.4.2 Extract resolver helpers into `services/config/resolver_service.py`
- [ ] 1.4.3 Update `api/config/config_profiles.py` to call services
- [ ] 1.4.4 Verify `py_compile` passes

## Phase 2: CSS Reorganization

### 2.1 Restore `styles/` Directory Structure
- [ ] 2.1.1 Create `styles/` directory
- [ ] 2.1.2 Extract `styles/tokens.css` from `styles.css` — CSS custom properties
- [ ] 2.1.3 Extract `styles/global.css` from `styles.css` — global reset, body, shell layout
- [ ] 2.1.4 Extract `styles/utilities.css` from `styles.css` — utility classes (.stack, .card, .muted, .dialog, etc.)
- [ ] 2.1.5 Extract `styles/syntax-highlight.css` from `styles.css` — code highlighting
- [ ] 2.1.6 Update `main.tsx` to import: `styles/tokens.css`, `styles/global.css`, `styles/utilities.css`, `styles/syntax-highlight.css`
- [ ] 2.1.7 Verify build passes

### 2.2 Restore Page-Specific CSS
- [ ] 2.2.1 Extract `styles/pages/dashboard.css` from `styles.css`
- [ ] 2.2.2 Extract `styles/pages/projects.css` from `styles.css`
- [ ] 2.2.3 Extract `styles/pages/sessions.css` from `styles.css`
- [ ] 2.2.4 Extract `styles/pages/settings.css` from `styles.css`
- [ ] 2.2.5 Extract `styles/pages/ssh-keys.css` from `styles.css`
- [ ] 2.2.6 Extract `styles/pages/git-history.css` from `styles.css`
- [ ] 2.2.7 Extract `styles/pages/repo-workspace.css` from `styles.css`
- [ ] 2.2.8 Update each page to import its page CSS
- [ ] 2.2.9 Verify build passes

### 2.3 Restore Component CSS Modules
- [ ] 2.3.1 Create `components/features/terminal/TerminalComponent.module.css` from terminal styles in `styles.css`
- [ ] 2.3.2 Create `components/features/git/GitToolbar.module.css` from git toolbar styles in `styles.css`
- [ ] 2.3.3 Create `components/features/git/CommitDialog.module.css` from commit dialog styles in `styles.css`
- [ ] 2.3.4 Create `components/features/git/MergeDialog.module.css` from merge dialog styles in `styles.css`
- [ ] 2.3.5 Create `components/features/git/FileEditor.module.css` from file editor styles in `styles.css`
- [ ] 2.3.6 Create `components/features/git/FileBrowser.module.css` from file browser styles in `styles.css`
- [ ] 2.3.7 Create `components/features/git/FileViewer.module.css` from file viewer styles in `styles.css`
- [ ] 2.3.8 Create `components/features/git/CommitPanel.module.css` from commit panel styles in `styles.css`
- [ ] 2.3.9 Create `components/features/session/InstanceList.module.css` from instance list styles in `styles.css`
- [ ] 2.3.10 Create `components/features/settings/SettingsTabLayout.module.css` from settings tab layout styles in `styles.css`
- [ ] 2.3.11 Create `components/layout/AppShell.module.css` from shell styles in `styles.css`
- [ ] 2.3.12 Update each component to use `import styles from './ComponentName.module.css'`
- [ ] 2.3.13 Remove extracted styles from `styles.css`
- [ ] 2.3.14 Verify build passes

### 2.4 Verify and Delete Monolith
- [ ] 2.4.1 Confirm `styles.css` is empty (or only has truly unclassifiable styles)
- [ ] 2.4.2 Delete `styles.css`
- [ ] 2.4.3 Verify build passes
- [ ] 2.4.4 Verify no visual regressions

## Phase 3: Frontend — Tool Workshop Page

- [ ] 3.1 Extract `ToolTypesTab` from `pages/ToolWorkshopPage.tsx` into `components/features/tool-workshop/ToolTypesTab.tsx`
- [ ] 3.2 Extract `ToolConfigsTab` into `components/features/tool-workshop/ToolConfigsTab.tsx`
- [ ] 3.3 Extract `ConfigFoldersTab` into `components/features/tool-workshop/ConfigFoldersTab.tsx`
- [ ] 3.4 Slim `pages/ToolWorkshopPage.tsx` to ~80 lines (tab switcher only)
- [ ] 3.5 Update imports in all consumers
- [ ] 3.6 Verify `tsc --noEmit` and `npm run build` pass

## Phase 4: Frontend — Config Profiles Page

- [ ] 4.1 Extract `ConfigProfileListView` into `components/features/config-profiles/ConfigProfileListView.tsx`
- [ ] 4.2 Extract `ConfigProfileDetailView` into `components/features/config-profiles/ConfigProfileDetailView.tsx`
- [ ] 4.3 Extract `ConfigProfileEditForm` into `components/features/config-profiles/ConfigProfileEditForm.tsx`
- [ ] 4.4 Extract `ConfigProfileMobileView` into `components/features/config-profiles/ConfigProfileMobileView.tsx`
- [ ] 4.5 Slim `pages/ConfigProfilesPage.tsx` to ~80 lines
- [ ] 4.6 Update imports
- [ ] 4.7 Verify `tsc --noEmit` and `npm run build` pass

## Phase 5: Frontend — Terminal Page

- [ ] 5.1 Extract `TerminalSessionManager` (tabs + auto-create) into `components/features/terminal/TerminalSessionManager.tsx`
- [ ] 5.2 Extract `MobileTerminalOverlay` into `components/features/terminal/MobileTerminalOverlay.tsx`
- [ ] 5.3 Extract fullscreen keyboard shortcut handler into `hooks/use-terminal-shortcuts.ts`
- [ ] 5.4 Slim `pages/TerminalPage.tsx` to ~80 lines
- [ ] 5.5 Update imports
- [ ] 5.6 Verify `tsc --noEmit` and `npm run build` pass

## Phase 6: Frontend — Settings & SSH Keys Pages

- [ ] 6.1 Extract `SettingsNavigation` into `components/features/settings/SettingsNavigation.tsx`
- [ ] 6.2 Slim `pages/SettingsPage.tsx` to ~80 lines
- [ ] 6.3 Extract `SSHKeyList` into `components/features/ssh-keys/SSHKeyList.tsx`
- [ ] 6.4 Extract `SSHKeyCreateForm` into `components/features/ssh-keys/SSHKeyCreateForm.tsx`
- [ ] 6.5 Slim `pages/SshKeysPage.tsx` to ~80 lines
- [ ] 6.6 Verify `tsc --noEmit` and `npm run build` pass

## Phase 7: Frontend — Projects & Repo Workspace Pages

- [ ] 7.1 Extract `ProjectList` into `components/features/project/ProjectList.tsx`
- [ ] 7.2 Extract `ProjectCreateDialog` into `components/features/project/ProjectCreateDialog.tsx`
- [ ] 7.3 Extract `ProjectEditDialog` into `components/features/project/ProjectEditDialog.tsx`
- [ ] 7.4 Slim `pages/ProjectsPage.tsx` to ~100 lines
- [ ] 7.5 Extract `WorkspaceLayout` into `components/features/workspace/WorkspaceLayout.tsx`
- [ ] 7.6 Slim `pages/RepoWorkspacePage.tsx` to ~150 lines
- [ ] 7.7 Verify `tsc --noEmit` and `npm run build` pass

## Phase 8: Integration and Verification

- [ ] 8.1 Run backend `py_compile` on all files
- [ ] 8.2 Run frontend `npm run typecheck`
- [ ] 8.3 Run frontend `npm run build`
- [ ] 8.4 Run frontend tests: `npm test`
- [ ] 8.5 Verify file size targets met (pages ≤ 150, routers ≤ 400, no `styles.css` monolith)
- [ ] 8.6 Verify no 404s or import errors in browser console
- [ ] 8.7 Manual smoke test: create project, start terminal, open config profiles
- [ ] 8.8 Verify visual regression: colors, spacing, typography unchanged
- [ ] 8.9 Verify mobile terminal styles intact
- [ ] 8.10 Verify notification dropdown styles intact
