Feature/documentation updates

dongle/AUTOSAVE_FEATURE.md

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+# Form Autosave Feature - Implementation Summary
+
+## Overview
+The project form now includes comprehensive autosave functionality that prevents data loss when users are filling out project descriptions and URLs.
+
+## Implementation Status: ✅ COMPLETE
+
+All acceptance criteria have been met:
+
+### ✅ Acceptance Criteria 1: Autosave runs only after fields change
+- **Implementation**: Form watch subscription in `ProjectForm.tsx` (lines 125-130)
+- **Behavior**: 
+  - Autosave triggers automatically when any form field changes
+  - Uses 1-second debounce to prevent excessive saves during rapid typing
+  - Only saves when form has actual content (not empty fields)
+- **Code Location**: 
+  - `dongle/components/projects/ProjectForm.tsx` - Form watch effect
+  - `dongle/services/draft/draft.service.ts` - `autoSaveDraft()` method with debouncing
+
+### ✅ Acceptance Criteria 2: Restored drafts are clearly indicated
+- **Implementation**: Draft restoration notification in `ProjectForm.tsx` (lines 268-273)
+- **Behavior**:
+  - Green notification banner appears when draft is restored: "Your previous draft has been restored"
+  - `DraftIndicator` component shows "Draft saved" with timestamp
+  - Displays time since last save (e.g., "just now", "5m ago", "2h ago")
+- **Code Location**:
+  - `dongle/components/projects/ProjectForm.tsx` - Restoration notification
+  - `dongle/components/projects/DraftIndicator.tsx` - Draft status UI
+
+### ✅ Acceptance Criteria 3: Users can clear saved drafts
+- **Implementation**: Discard draft button with confirmation dialog
+- **Behavior**:
+  - "Discard Draft" button in `DraftIndicator` component
+  - Confirmation dialog prevents accidental deletion
+  - Clearing draft resets form to initial/empty state
+  - Works for both create and edit modes
+- **Code Location**:
+  - `dongle/components/projects/DraftIndicator.tsx` - Discard button (lines 49-57)
+  - `dongle/components/projects/ProjectForm.tsx` - Confirmation dialog (lines 390-400)
+
+## Technical Architecture
+
+### Files Modified/Created:
+1. **`dongle/hooks/useDraft.ts`** - Draft management hook
+   - Handles draft loading, saving, and deletion
+   - Provides draft state and actions to components
+
+2. **`dongle/services/draft/draft.service.ts`** - Draft persistence service
+   - localStorage-based storage
+   - Debounced autosave (1000ms)
+   - Draft lifecycle management
+
+3. **`dongle/components/projects/DraftIndicator.tsx`** - Draft UI component
+   - Visual indicator for draft status
+   - Last saved timestamp
+   - Discard draft action
+
+4. **`dongle/components/projects/ProjectForm.tsx`** - Form integration
+   - Draft restoration on mount
+   - Autosave on field changes
+   - Confirmation dialogs
+
+5. **`dongle/__tests__/hooks/useDraft.test.ts`** - Comprehensive tests
+   - Tests all acceptance criteria
+   - Verifies debouncing behavior
+   - Tests both create and edit modes
+
+### Key Features:
+
+#### Autosave Timing
+- **Debounce**: 1000ms (1 second)
+- **Trigger**: Any form field change
+- **Optimization**: Only saves when content exists
+
+#### Draft Storage
+- **Location**: Browser localStorage
+- **Key**: `dongle_project_drafts`
+- **Scope**: Per-mode (create vs edit) and per-project
+- **Isolation**: Create mode and different edit projects have separate drafts
+
+#### User Experience
+1. User starts filling form
+2. After 1 second of inactivity, draft auto-saves
+3. Blue indicator appears: "Draft saved • 5m ago"
+4. If user leaves and returns, draft auto-restores
+5. Green notification confirms restoration
+6. User can discard draft with confirmation
+
+## Usage Examples
+
+### Create Mode
+```typescript
+// Draft ID: "new-project-draft"
+// Shared across all new project submissions
+const draft = useDraft({ mode: "create", autoSave: true });
+```
+
+### Edit Mode
+```typescript
+// Draft ID: "edit-project-{projectId}"
+// Unique per project being edited
+const draft = useDraft({ 
+  mode: "edit", 
+  projectId: "project-123", 
+  autoSave: true 
+});
+```
+
+### Manual Draft Control
+```typescript
+// Disable autosave for manual control
+const draft = useDraft({ mode: "create", autoSave: false });
+
+// Manually save
+draft.saveDraft(formData);
+
+// Clear draft
+draft.clearDraft();
+```
+
+## Testing
+
+Run tests to verify functionality:
+```bash
+npm test -- __tests__/hooks/useDraft.test.ts --run
+```
+
+Test coverage includes:
+- ✅ Autosave only with content
+- ✅ Debouncing prevents excessive saves
+- ✅ Draft restoration on mount
+- ✅ Last saved timestamp accuracy
+- ✅ Draft deletion
+- ✅ Mode-specific draft isolation
+
+## Browser Compatibility
+
+Uses `localStorage` API:
+- ✅ Chrome/Edge (all versions)
+- ✅ Firefox (all versions)
+- ✅ Safari (all versions)
+- ✅ Opera (all versions)
+
+Server-side rendering safe (checks `typeof window === "undefined"`)
+
+## Future Enhancements (Optional)
+
+Potential improvements for future iterations:
+- [ ] Cloud sync for cross-device drafts
+- [ ] Multiple draft slots per user
+- [ ] Draft versioning/history
+- [ ] Configurable autosave interval
+- [ ] Offline-first with service worker
+- [ ] Draft conflict resolution for collaborative editing
+
+## Related Documentation
+
+- [Draft Feature Specification](./DRAFT_FEATURE.md)
+- [Draft Implementation Summary](./DRAFT_IMPLEMENTATION_SUMMARY.md)
+- [Draft UI Guide](./DRAFT_UI_GUIDE.md)
+- [Draft Testing Checklist](./DRAFT_TESTING_CHECKLIST.md)