feat: first cut at the full renderer

.claude/settings.local.json

@@ -4,7 +4,8 @@
       "Bash(npm run build:*)",
       "Bash(npx tsc:*)",
       "Bash(node ./node_modules/typescript/bin/tsc:*)",
-      "Bash(npm run build:main:*)"
+      "Bash(npm run build:main:*)",
+      "Bash(npx vitest:*)"
     ]
   }
 }

CLAUDE.md

@@ -0,0 +1,776 @@
+# GitHub Copilot Instructions for Blogging Desktop Server (bDS)
+
+This document provides context and best practices for GitHub Copilot when working on this Electron + TypeScript + SQLite blogging application.
+
+## Project Overview
+
+**Blogging Desktop Server (bDS)** is a desktop blogging application built with:
+- **Electron** v28+ for cross-platform desktop
+- **TypeScript** for all code (strict mode)
+- **React** for the renderer UI
+- **Drizzle ORM** for type-safe database access
+- **@libsql/client** for SQLite (local database)
+- **Zustand** for React state management
+
+---
+
+## ⚠️ MANDATORY: Test-First Development
+
+**STOP!** Before writing ANY implementation code, you MUST:
+
+1. **Write a failing test first** that describes the expected behavior
+2. **Run the test** to confirm it fails (Red)
+3. **Write minimal code** to make the test pass (Green)
+4. **Refactor** while keeping tests green
+
+> **No code without tests. No exceptions.**
+>
+> Tests must import and exercise the REAL implementation classes, not inline helper functions.
+> Mock only external dependencies (database, filesystem), never the class under test.
+
+See the [TDD Requirements](#test-driven-development-tdd-requirements) section for detailed guidelines.
+
+---
+
+## ⚠️ MANDATORY: Fix All Test Failures
+
+**You MUST investigate and fix ALL test failures before completing any task.**
+
+- Never leave tests failing, even if they appear unrelated to your changes
+- If a test failure is pre-existing, fix it as part of your current work
+- Run the full test suite (`npm test`) before considering any task complete
+- If you cannot fix a test, explain why and propose a solution
+
+> **Zero failing tests. No exceptions.**
+
+---
+
+## ⚠️ MANDATORY: Remove Unused Code
+
+**Never keep unused code around. Always delete it completely.**
+
+- When a feature is removed, delete ALL related code (implementation, tests, types, configs)
+- Do NOT comment out code "for later" - use version control history
+- Do NOT skip tests for removed functionality - delete them
+- Do NOT leave dead code paths, unused imports, or orphaned functions
+- When refactoring, actively look for and remove any code that becomes unused
+
+> **Delete unused code immediately. No exceptions.**
+
+---
+
+## ⚠️ MANDATORY: Build Verification After Code Changes
+
+**You MUST run the full build after making code changes.**
+
+- Run `npm run build` after any code modifications
+- Fix ALL build errors before considering the task complete
+- Build errors indicate issues that may not be caught by `tsc --noEmit` alone (e.g., event forwarding, renderer build)
+- The build must complete successfully before the task is complete
+
+> **Successful build required. No exceptions.**
+
+---
+
+## ⚠️ MANDATORY: No External JS/CSS in Preview or Generated HTML
+
+**Do not reference external JavaScript or CSS libraries (CDNs/remote URLs) from the preview server output or generated HTML.**
+
+- Preview HTML must reference only local/package-bundled assets
+- Generated HTML must not include CDN-hosted JS/CSS libraries
+- If a library is needed (e.g., Pico CSS, Lightbox), include it as a local dependency and serve/reference it locally
+- Avoid introducing any new `<script src="https://...">` or `<link href="https://...">` for library assets in preview/generated output
+
+> **Preview and generated HTML must be self-contained with local assets. No exceptions.**
+
+---
+
+## Architecture Principles
+
+### Separation of Concerns
+
+1. **Engine Classes** (`src/main/engine/`): All business logic lives here
+   - `PostEngine`: Blog post CRUD, file I/O, markdown handling
+   - `MediaEngine`: Media import, metadata management
+   - `SyncEngine`: Remote database synchronization
+   - `TaskManager`: Async task queue with progress tracking
+
+2. **IPC Layer** (`src/main/ipc/`): Bridge between main and renderer
+   - Handlers call engine methods, never contain business logic
+   - Always use `ipcMain.handle` for async operations
+
+3. **UI Components** (`src/renderer/components/`): Presentation only
+   - Components should be stateless where possible
+   - Use Zustand store for shared state
+   - Never call IPC directly from deeply nested components
+
+### File Storage Pattern
+
+- **Posts**: Markdown files with YAML frontmatter in `posts/` directory
+- **Media**: Binary files with `.meta` JSON sidecar files in `media/` directory
+- **Database**: Index/cache only, source of truth is filesystem
+
+## TypeScript Best Practices
+
+### Type Safety
+
+```typescript
+// ✅ DO: Use explicit return types for public methods
+async function getPost(id: string): Promise<PostData | null> {
+  // ...
+}
+
+// ✅ DO: Use discriminated unions for status types
+type SyncStatus = 'pending' | 'syncing' | 'synced' | 'error';
+
+// ✅ DO: Use Drizzle's inferred types
+import { posts, type Post, type NewPost } from './schema';
+
+// ❌ DON'T: Use `any` type
+function processData(data: any) { } // Bad
+
+// ❌ DON'T: Ignore null/undefined possibilities
+const post = await getPost(id);
+console.log(post.title); // Bad - post might be null
+```
+
+### Async/Await Patterns
+
+```typescript
+// ✅ DO: Use try-catch with specific error handling
+try {
+  await fileOperation();
+} catch (error) {
+  if (error instanceof Error && error.message.includes('ENOENT')) {
+    // Handle file not found
+  }
+  throw error;
+}
+
+// ✅ DO: Use Promise.all for concurrent operations
+const [posts, media] = await Promise.all([
+  postEngine.getAllPosts(),
+  mediaEngine.getAllMedia()
+]);
+
+// ❌ DON'T: Forget to await async operations
+savePost(post); // Bad - fire and forget
+```
+
+### Error Handling
+
+```typescript
+// ✅ DO: Create typed error classes
+class SyncError extends Error {
+  constructor(
+    message: string,
+    public readonly code: 'AUTH_FAILED' | 'NETWORK_ERROR' | 'CONFLICT'
+  ) {
+    super(message);
+    this.name = 'SyncError';
+  }
+}
+
+// ✅ DO: Return result objects for operations that can fail
+interface OperationResult<T> {
+  success: boolean;
+  data?: T;
+  error?: string;
+}
+```
+
+## Electron Best Practices
+
+### IPC Communication
+
+```typescript
+// ✅ DO: Use contextBridge for secure IPC exposure
+// preload.ts
+contextBridge.exposeInMainWorld('electronAPI', {
+  posts: {
+    getAll: () => ipcRenderer.invoke('posts:getAll'),
+    create: (data: CreatePostInput) => ipcRenderer.invoke('posts:create', data),
+  }
+});
+
+// ✅ DO: Validate all IPC inputs in main process
+ipcMain.handle('posts:create', async (_event, data: unknown) => {
+  const validated = validateCreatePostInput(data);
+  return postEngine.createPost(validated);
+});
+
+// ❌ DON'T: Use nodeIntegration: true
+// ❌ DON'T: Expose Node.js APIs directly to renderer
+```
+
+### Window Management
+
+```typescript
+// ✅ DO: Check window existence before sending messages
+if (mainWindow && !mainWindow.isDestroyed()) {
+  mainWindow.webContents.send('event', data);
+}
+
+// ✅ DO: Clean up IPC handlers on window close
+mainWindow.on('closed', () => {
+  ipcMain.removeHandler('posts:getAll');
+});
+```
+
+### Process Separation
+
+```typescript
+// Main process: File system, database, native APIs
+// Renderer process: UI only, no direct fs/db access
+
+// ✅ DO: All file operations in main process
+// src/main/engine/PostEngine.ts
+await fs.writeFile(filePath, content);
+
+// ❌ DON'T: Import 'fs' in renderer
+// src/renderer/components/Editor.tsx
+import fs from 'fs'; // Bad!
+```
+
+## SQLite & Drizzle ORM Best Practices
+
+### Schema Definition
+
+```typescript
+// ✅ DO: Use proper column types and constraints
+export const posts = sqliteTable('posts', {
+  id: text('id').primaryKey(),
+  title: text('title').notNull(),
+  slug: text('slug').notNull().unique(),
+  createdAt: integer('created_at', { mode: 'timestamp' }).notNull(),
+  syncStatus: text('sync_status').$type<'pending' | 'synced'>().default('pending'),
+});
+
+// ✅ DO: Create indexes for frequently queried columns
+// CREATE INDEX idx_posts_slug ON posts(slug);
+// CREATE INDEX idx_posts_sync_status ON posts(sync_status);
+```
+
+### Query Patterns
+
+```typescript
+import { eq, and, desc, sql } from 'drizzle-orm';
+
+// ✅ DO: Use Drizzle query builder
+const drafts = await db
+  .select()
+  .from(posts)
+  .where(eq(posts.status, 'draft'))
+  .orderBy(desc(posts.updatedAt));
+
+// ✅ DO: Use transactions for multi-table updates
+await db.transaction(async (tx) => {
+  await tx.update(posts).set({ status: 'published' }).where(eq(posts.id, id));
+  await tx.insert(syncLog).values({ entityId: id, operation: 'update' });
+});
+
+// ❌ DON'T: Write raw SQL unless absolutely necessary
+// ❌ DON'T: Use string interpolation in queries
+const result = db.run(`SELECT * FROM posts WHERE id = '${id}'`); // SQL injection risk!
+```
+
+### Connection Management
+
+```typescript
+// ✅ DO: Use singleton pattern for database connection
+let dbInstance: DatabaseConnection | null = null;
+
+export function getDatabase(): DatabaseConnection {
+  if (!dbInstance) {
+    dbInstance = new DatabaseConnection();
+  }
+  return dbInstance;
+}
+
+// ✅ DO: Close connection gracefully on app quit
+app.on('before-quit', async () => {
+  await getDatabase().close();
+});
+```
+
+## Remote Sync Best Practices (Dropbox)
+
+### Sync Strategy
+
+```typescript
+// ✅ DO: Track sync status per entity
+interface SyncableEntity {
+  syncStatus: 'pending' | 'syncing' | 'synced' | 'conflict';
+  syncedAt: number | null;
+  checksum: string;
+}
+
+// ✅ DO: Use checksums to detect conflicts
+const localChecksum = calculateChecksum(localContent);
+const remoteChecksum = await fetchRemoteChecksum(id);
+if (localChecksum !== remoteChecksum) {
+  // Handle conflict
+}
+
+// ✅ DO: Implement retry logic with exponential backoff
+async function syncWithRetry(maxAttempts = 3): Promise<void> {
+  for (let attempt = 1; attempt <= maxAttempts; attempt++) {
+    try {
+      await sync();
+      return;
+    } catch (error) {
+      if (attempt === maxAttempts) throw error;
+      await sleep(Math.pow(2, attempt) * 1000);
+    }
+  }
+}
+```
+
+### Offline-First Approach
+
+```typescript
+// ✅ DO: Always write to local first
+async function savePost(post: PostData): Promise<void> {
+  // 1. Save to local file system
+  await writePostFile(post);
+  
+  // 2. Update local database
+  await updateLocalDatabase(post);
+  
+  // 3. Mark for sync (don't wait for network)
+  await markForSync(post.id);
+}
+
+// ✅ DO: Queue sync operations
+const syncQueue: SyncOperation[] = [];
+
+function queueSync(operation: SyncOperation): void {
+  syncQueue.push(operation);
+  processSyncQueue(); // Non-blocking
+}
+
+// ✅ DO: Handle network state changes
+window.addEventListener('online', () => {
+  syncEngine.processPendingChanges();
+});
+```
+
+### Conflict Resolution
+
+```typescript
+// ✅ DO: Implement clear conflict resolution strategy
+type ConflictResolution = 'local-wins' | 'remote-wins' | 'manual';
+
+interface ConflictInfo {
+  entityId: string;
+  localVersion: EntityVersion;
+  remoteVersion: EntityVersion;
+  resolution?: ConflictResolution;
+}
+
+// ✅ DO: Allow user to resolve conflicts manually when needed
+async function resolveConflict(
+  conflict: ConflictInfo,
+  resolution: ConflictResolution
+): Promise<void> {
+  switch (resolution) {
+    case 'local-wins':
+      await pushLocalToRemote(conflict.entityId);
+      break;
+    case 'remote-wins':
+      await pullRemoteToLocal(conflict.entityId);
+      break;
+    case 'manual':
+      await showConflictResolutionUI(conflict);
+      break;
+  }
+}
+```
+
+### Sync Logging
+
+```typescript
+// ✅ DO: Log all sync operations for debugging
+await db.insert(syncLog).values({
+  id: generateId(),
+  entityType: 'post',
+  entityId: postId,
+  operation: 'push',
+  status: 'success',
+  timestamp: Date.now(),
+});
+
+// ✅ DO: Implement sync status visibility in UI
+const pendingCount = await syncEngine.getPendingChangesCount();
+statusBar.setSyncStatus({ pending: pendingCount });
+```
+
+## React & State Management
+
+### Zustand Patterns
+
+```typescript
+// ✅ DO: Keep store slices focused
+interface AppState {
+  // UI state
+  activeView: 'posts' | 'media' | 'settings';
+  sidebarVisible: boolean;
+  
+  // Data
+  posts: PostData[];
+  media: MediaData[];
+  
+  // Actions
+  setActiveView: (view: AppState['activeView']) => void;
+  setPosts: (posts: PostData[]) => void;
+}
+
+// ✅ DO: Use selectors for derived state
+const draftCount = useAppStore((state) => 
+  state.posts.filter(p => p.status === 'draft').length
+);
+
+// ❌ DON'T: Store derived data
+interface BadState {
+  posts: PostData[];
+  draftCount: number; // Bad - derived from posts
+}
+```
+
+### Component Patterns
+
+```typescript
+// ✅ DO: Use composition over prop drilling
+<EditorProvider postId={selectedPostId}>
+  <EditorToolbar />
+  <EditorContent />
+  <EditorStatusBar />
+</EditorProvider>
+
+// ✅ DO: Separate container and presentation components
+// Container: handles data fetching/IPC
+// Presentation: pure rendering based on props
+
+// ❌ DON'T: Put IPC calls in deeply nested components
+const DeepComponent = () => {
+  // Bad - hard to test and maintain
+  const handleClick = async () => {
+    await window.electronAPI.posts.save(data);
+  };
+};
+```
+
+## File Naming Conventions
+
+```
+src/
+  main/
+    database/
+      schema.ts        # Drizzle schema definitions
+      connection.ts    # Database connection management
+    engine/
+      PostEngine.ts    # PascalCase for classes
+      TaskManager.ts
+    ipc/
+      handlers.ts      # camelCase for modules
+  renderer/
+    components/
+      Editor/
+        Editor.tsx     # PascalCase for components
+        Editor.css     # Matching CSS file
+        index.ts       # Barrel exports
+    store/
+      appStore.ts      # camelCase for stores
+    types/
+      electron.d.ts    # Type declarations
+```
+
+## Test-Driven Development (TDD) Requirements
+
+> **⚠️ CRITICAL: This project follows STRICT Test-Driven Development.**
+>
+> Writing implementation code before tests is NOT acceptable.
+> Pull requests without corresponding tests will be rejected.
+
+**All new features and bug fixes MUST have tests written BEFORE implementation.**
+
+### The Golden Rule: Test Real Implementations
+
+```typescript
+// ✅ CORRECT: Import and test the REAL class
+import { PostEngine } from '../../src/main/engine/PostEngine';
+
+describe('PostEngine', () => {
+  let postEngine: PostEngine;
+
+  beforeEach(() => {
+    // Mock only external dependencies, NOT the class under test
+    postEngine = new PostEngine(mockDatabase, mockFileSystem);
+  });
+
+  it('should create a post with generated slug from title', async () => {
+    const result = await postEngine.createPost({ title: 'Hello World' });
+    expect(result.slug).toBe('hello-world');
+  });
+});
+
+// ❌ WRONG: Testing inline helper functions instead of real implementations
+describe('PostEngine', () => {
+  it('should generate slug', () => {
+    // This tests a local function, not the actual PostEngine class!
+    const generateSlug = (title: string) => title.toLowerCase().replace(/ /g, '-');
+    expect(generateSlug('Hello World')).toBe('hello-world');
+  });
+});
+```
+
+### TDD Workflow (Red-Green-Refactor)
+
+```typescript
+// 1. RED: Write a failing test first that uses the REAL implementation
+import { PostEngine } from '../../src/main/engine/PostEngine';
+
+describe('PostEngine.createPost', () => {
+  it('should create a post with generated slug from title', async () => {
+    const postEngine = new PostEngine(mockDb, mockFs);
+    const result = await postEngine.createPost({ title: 'Hello World' });
+    expect(result.slug).toBe('hello-world');
+  });
+});
+
+// 2. GREEN: Write minimal code in PostEngine to pass the test
+// 3. REFACTOR: Improve the code while keeping tests green
+```
+
+### Test File Structure
+
+```
+tests/
+├── setup.ts                    # Global test configuration
+├── utils/
+│   ├── factories.ts           # Mock data factories
+│   └── index.ts               # Utility exports
+└── engine/
+    ├── TaskManager.test.ts    # TaskManager unit tests
+    ├── PostEngine.test.ts     # PostEngine unit tests
+    ├── MediaEngine.test.ts    # MediaEngine unit tests
+    └── SyncEngine.test.ts     # SyncEngine unit tests
+```
+
+### Test Naming Conventions
+
+```typescript
+// ✅ DO: Use descriptive test names that explain behavior
+it('should generate slug from title with lowercase and hyphens', () => {});
+it('should emit taskCompleted event when task finishes', () => {});
+it('should return null when post not found', () => {});
+
+// ❌ DON'T: Use vague test names
+it('works', () => {});
+it('test createPost', () => {});
+```
+
+### Mock Factory Patterns
+
+```typescript
+// ✅ DO: Use factory functions with overrides
+import { createMockPost, createMockMedia } from '../utils/factories';
+
+const post = createMockPost({ 
+  title: 'Custom Title',
+  status: 'published' 
+});
+
+// ✅ DO: Create specialized factories for common scenarios
+const draftPost = createMockPost({ status: 'draft' });
+const publishedPost = createMockPublishedPost();
+const imageMedia = createMockMedia({ mimeType: 'image/jpeg' });
+const pdfMedia = createMockPdfMedia();
+```
+
+### Testing Async Code
+
+```typescript
+// ✅ DO: Use async/await in tests
+it('should save post to filesystem', async () => {
+  const post = createMockPost();
+  await postEngine.createPost(post);
+  
+  expect(fs.writeFile).toHaveBeenCalled();
+});
+
+// ✅ DO: Test event emissions
+it('should emit postCreated event', async () => {
+  const handler = vi.fn();
+  postEngine.on('postCreated', handler);
+  
+  await postEngine.createPost({ title: 'Test' });
+  
+  expect(handler).toHaveBeenCalledWith(
+    expect.objectContaining({ title: 'Test' })
+  );
+});
+
+// ✅ DO: Test error cases
+it('should throw when file write fails', async () => {
+  vi.mocked(fs.writeFile).mockRejectedValueOnce(new Error('ENOSPC'));
+  
+  await expect(postEngine.createPost({ title: 'Test' }))
+    .rejects.toThrow('ENOSPC');
+});
+```
+
+### Mocking Dependencies
+
+```typescript
+// ✅ DO: Mock at module level for consistent behavior
+vi.mock('../../src/main/database', () => ({
+  getDatabase: vi.fn(() => mockDatabase),
+}));
+
+vi.mock('fs/promises', () => ({
+  readFile: vi.fn(),
+  writeFile: vi.fn(),
+  unlink: vi.fn(),
+}));
+
+// ✅ DO: Reset mocks between tests
+beforeEach(() => {
+  vi.clearAllMocks();
+});
+
+afterEach(() => {
+  vi.restoreAllMocks();
+});
+```
+
+### Test Coverage Requirements
+
+- **Minimum coverage**: 80% for engine classes
+- **Critical paths**: 100% coverage for data mutations
+- **Edge cases**: Null handling, empty arrays, error conditions
+
+```bash
+# Run tests with coverage
+npm run test:coverage
+
+# View coverage report
+open coverage/index.html
+```
+
+### When to Write Tests
+
+| Scenario | Test Requirement |
+|----------|-----------------|
+| New engine method | Unit tests BEFORE implementation |
+| Bug fix | Failing test that reproduces bug FIRST |
+| Refactoring | Ensure existing tests pass BEFORE and AFTER |
+| IPC handler | Integration test with mocked engine |
+| UI component | Behavior tests for user interactions |
+
+### Test Commands
+
+```bash
+npm run test           # Run all tests once
+npm run test:watch     # Run tests in watch mode
+npm run test:coverage  # Generate coverage report
+npm run test:ui        # Open Vitest UI
+```
+
+### Vitest Configuration
+
+Tests are configured in `vitest.config.ts` with:
+- Global test utilities (describe, it, expect, vi)
+- Node environment for main process tests
+- Coverage reports via v8
+- Custom setup file for Electron mocks
+
+## Testing Considerations
+
+```typescript
+// ✅ DO: Design for testability
+// - Engine classes should accept dependencies via constructor
+// - Use interfaces for external dependencies
+// - Keep pure business logic separate from I/O
+
+class PostEngine {
+  constructor(
+    private db: DatabaseConnection,
+    private fs: FileSystemAdapter, // Mockable
+    private eventEmitter: EventEmitter
+  ) {}
+}
+
+// ✅ DO: Use factory functions for test data
+function createTestPost(overrides?: Partial<PostData>): PostData {
+  return {
+    id: 'test-id',
+    title: 'Test Post',
+    status: 'draft',
+    ...overrides,
+  };
+}
+
+// ✅ DO: Test pure functions in isolation
+describe('generateSlug', () => {
+  it('should convert to lowercase', () => {
+    expect(generateSlug('Hello World')).toBe('hello-world');
+  });
+  
+  it('should replace special characters', () => {
+    expect(generateSlug('Hello, World!')).toBe('hello-world');
+  });
+});
+```
+
+## Common Patterns in This Codebase
+
+### Creating a New Engine Method
+
+```typescript
+// 1. Add method to engine class
+async newOperation(input: InputType): Promise<OutputType> {
+  // Validate input
+  // Perform operation
+  // Emit event for UI updates
+  this.emit('operationCompleted', result);
+  return result;
+}
+
+// 2. Add IPC handler
+ipcMain.handle('entity:operation', async (_event, input) => {
+  return engine.newOperation(input);
+});
+
+// 3. Expose in preload
+entity: {
+  operation: (input) => ipcRenderer.invoke('entity:operation', input),
+}
+
+// 4. Update store and UI
+```
+
+### Adding a New Database Table
+
+```typescript
+// 1. Define in schema.ts with proper types
+export const newTable = sqliteTable('new_table', {
+  id: text('id').primaryKey(),
+  // ... columns
+});
+
+// 2. Export types
+export type NewTableRow = typeof newTable.$inferSelect;
+export type NewTableInsert = typeof newTable.$inferInsert;
+
+// 3. Add CREATE TABLE to migrations in connection.ts
+// 4. Create corresponding engine class
+```
+
+## Security Reminders
+
+- Never log sensitive data (auth tokens, passwords)
+- Validate all IPC inputs before processing
+- Use `contextIsolation: true` and `sandbox: false` only when necessary
+- Store Dropbox auth tokens in secure storage, not in code
+- Sanitize user input before rendering (XSS prevention)

GEMINI.md

@@ -0,0 +1,776 @@
+# GitHub Copilot Instructions for Blogging Desktop Server (bDS)
+
+This document provides context and best practices for GitHub Copilot when working on this Electron + TypeScript + SQLite blogging application.
+
+## Project Overview
+
+**Blogging Desktop Server (bDS)** is a desktop blogging application built with:
+- **Electron** v28+ for cross-platform desktop
+- **TypeScript** for all code (strict mode)
+- **React** for the renderer UI
+- **Drizzle ORM** for type-safe database access
+- **@libsql/client** for SQLite (local database)
+- **Zustand** for React state management
+
+---
+
+## ⚠️ MANDATORY: Test-First Development
+
+**STOP!** Before writing ANY implementation code, you MUST:
+
+1. **Write a failing test first** that describes the expected behavior
+2. **Run the test** to confirm it fails (Red)
+3. **Write minimal code** to make the test pass (Green)
+4. **Refactor** while keeping tests green
+
+> **No code without tests. No exceptions.**
+>
+> Tests must import and exercise the REAL implementation classes, not inline helper functions.
+> Mock only external dependencies (database, filesystem), never the class under test.
+
+See the [TDD Requirements](#test-driven-development-tdd-requirements) section for detailed guidelines.
+
+---
+
+## ⚠️ MANDATORY: Fix All Test Failures
+
+**You MUST investigate and fix ALL test failures before completing any task.**
+
+- Never leave tests failing, even if they appear unrelated to your changes
+- If a test failure is pre-existing, fix it as part of your current work
+- Run the full test suite (`npm test`) before considering any task complete
+- If you cannot fix a test, explain why and propose a solution
+
+> **Zero failing tests. No exceptions.**
+
+---
+
+## ⚠️ MANDATORY: Remove Unused Code
+
+**Never keep unused code around. Always delete it completely.**
+
+- When a feature is removed, delete ALL related code (implementation, tests, types, configs)
+- Do NOT comment out code "for later" - use version control history
+- Do NOT skip tests for removed functionality - delete them
+- Do NOT leave dead code paths, unused imports, or orphaned functions
+- When refactoring, actively look for and remove any code that becomes unused
+
+> **Delete unused code immediately. No exceptions.**
+
+---
+
+## ⚠️ MANDATORY: Build Verification After Code Changes
+
+**You MUST run the full build after making code changes.**
+
+- Run `npm run build` after any code modifications
+- Fix ALL build errors before considering the task complete
+- Build errors indicate issues that may not be caught by `tsc --noEmit` alone (e.g., event forwarding, renderer build)
+- The build must complete successfully before the task is complete
+
+> **Successful build required. No exceptions.**
+
+---
+
+## ⚠️ MANDATORY: No External JS/CSS in Preview or Generated HTML
+
+**Do not reference external JavaScript or CSS libraries (CDNs/remote URLs) from the preview server output or generated HTML.**
+
+- Preview HTML must reference only local/package-bundled assets
+- Generated HTML must not include CDN-hosted JS/CSS libraries
+- If a library is needed (e.g., Pico CSS, Lightbox), include it as a local dependency and serve/reference it locally
+- Avoid introducing any new `<script src="https://...">` or `<link href="https://...">` for library assets in preview/generated output
+
+> **Preview and generated HTML must be self-contained with local assets. No exceptions.**
+
+---
+
+## Architecture Principles
+
+### Separation of Concerns
+
+1. **Engine Classes** (`src/main/engine/`): All business logic lives here
+   - `PostEngine`: Blog post CRUD, file I/O, markdown handling
+   - `MediaEngine`: Media import, metadata management
+   - `SyncEngine`: Remote database synchronization
+   - `TaskManager`: Async task queue with progress tracking
+
+2. **IPC Layer** (`src/main/ipc/`): Bridge between main and renderer
+   - Handlers call engine methods, never contain business logic
+   - Always use `ipcMain.handle` for async operations
+
+3. **UI Components** (`src/renderer/components/`): Presentation only
+   - Components should be stateless where possible
+   - Use Zustand store for shared state
+   - Never call IPC directly from deeply nested components
+
+### File Storage Pattern
+
+- **Posts**: Markdown files with YAML frontmatter in `posts/` directory
+- **Media**: Binary files with `.meta` JSON sidecar files in `media/` directory
+- **Database**: Index/cache only, source of truth is filesystem
+
+## TypeScript Best Practices
+
+### Type Safety
+
+```typescript
+// ✅ DO: Use explicit return types for public methods
+async function getPost(id: string): Promise<PostData | null> {
+  // ...
+}
+
+// ✅ DO: Use discriminated unions for status types
+type SyncStatus = 'pending' | 'syncing' | 'synced' | 'error';
+
+// ✅ DO: Use Drizzle's inferred types
+import { posts, type Post, type NewPost } from './schema';
+
+// ❌ DON'T: Use `any` type
+function processData(data: any) { } // Bad
+
+// ❌ DON'T: Ignore null/undefined possibilities
+const post = await getPost(id);
+console.log(post.title); // Bad - post might be null
+```
+
+### Async/Await Patterns
+
+```typescript
+// ✅ DO: Use try-catch with specific error handling
+try {
+  await fileOperation();
+} catch (error) {
+  if (error instanceof Error && error.message.includes('ENOENT')) {
+    // Handle file not found
+  }
+  throw error;
+}
+
+// ✅ DO: Use Promise.all for concurrent operations
+const [posts, media] = await Promise.all([
+  postEngine.getAllPosts(),
+  mediaEngine.getAllMedia()
+]);
+
+// ❌ DON'T: Forget to await async operations
+savePost(post); // Bad - fire and forget
+```
+
+### Error Handling
+
+```typescript
+// ✅ DO: Create typed error classes
+class SyncError extends Error {
+  constructor(
+    message: string,
+    public readonly code: 'AUTH_FAILED' | 'NETWORK_ERROR' | 'CONFLICT'
+  ) {
+    super(message);
+    this.name = 'SyncError';
+  }
+}
+
+// ✅ DO: Return result objects for operations that can fail
+interface OperationResult<T> {
+  success: boolean;
+  data?: T;
+  error?: string;
+}
+```
+
+## Electron Best Practices
+
+### IPC Communication
+
+```typescript
+// ✅ DO: Use contextBridge for secure IPC exposure
+// preload.ts
+contextBridge.exposeInMainWorld('electronAPI', {
+  posts: {
+    getAll: () => ipcRenderer.invoke('posts:getAll'),
+    create: (data: CreatePostInput) => ipcRenderer.invoke('posts:create', data),
+  }
+});
+
+// ✅ DO: Validate all IPC inputs in main process
+ipcMain.handle('posts:create', async (_event, data: unknown) => {
+  const validated = validateCreatePostInput(data);
+  return postEngine.createPost(validated);
+});
+
+// ❌ DON'T: Use nodeIntegration: true
+// ❌ DON'T: Expose Node.js APIs directly to renderer
+```
+
+### Window Management
+
+```typescript
+// ✅ DO: Check window existence before sending messages
+if (mainWindow && !mainWindow.isDestroyed()) {
+  mainWindow.webContents.send('event', data);
+}
+
+// ✅ DO: Clean up IPC handlers on window close
+mainWindow.on('closed', () => {
+  ipcMain.removeHandler('posts:getAll');
+});
+```
+
+### Process Separation
+
+```typescript
+// Main process: File system, database, native APIs
+// Renderer process: UI only, no direct fs/db access
+
+// ✅ DO: All file operations in main process
+// src/main/engine/PostEngine.ts
+await fs.writeFile(filePath, content);
+
+// ❌ DON'T: Import 'fs' in renderer
+// src/renderer/components/Editor.tsx
+import fs from 'fs'; // Bad!
+```
+
+## SQLite & Drizzle ORM Best Practices
+
+### Schema Definition
+
+```typescript
+// ✅ DO: Use proper column types and constraints
+export const posts = sqliteTable('posts', {
+  id: text('id').primaryKey(),
+  title: text('title').notNull(),
+  slug: text('slug').notNull().unique(),
+  createdAt: integer('created_at', { mode: 'timestamp' }).notNull(),
+  syncStatus: text('sync_status').$type<'pending' | 'synced'>().default('pending'),
+});
+
+// ✅ DO: Create indexes for frequently queried columns
+// CREATE INDEX idx_posts_slug ON posts(slug);
+// CREATE INDEX idx_posts_sync_status ON posts(sync_status);
+```
+
+### Query Patterns
+
+```typescript
+import { eq, and, desc, sql } from 'drizzle-orm';
+
+// ✅ DO: Use Drizzle query builder
+const drafts = await db
+  .select()
+  .from(posts)
+  .where(eq(posts.status, 'draft'))
+  .orderBy(desc(posts.updatedAt));
+
+// ✅ DO: Use transactions for multi-table updates
+await db.transaction(async (tx) => {
+  await tx.update(posts).set({ status: 'published' }).where(eq(posts.id, id));
+  await tx.insert(syncLog).values({ entityId: id, operation: 'update' });
+});
+
+// ❌ DON'T: Write raw SQL unless absolutely necessary
+// ❌ DON'T: Use string interpolation in queries
+const result = db.run(`SELECT * FROM posts WHERE id = '${id}'`); // SQL injection risk!
+```
+
+### Connection Management
+
+```typescript
+// ✅ DO: Use singleton pattern for database connection
+let dbInstance: DatabaseConnection | null = null;
+
+export function getDatabase(): DatabaseConnection {
+  if (!dbInstance) {
+    dbInstance = new DatabaseConnection();
+  }
+  return dbInstance;
+}
+
+// ✅ DO: Close connection gracefully on app quit
+app.on('before-quit', async () => {
+  await getDatabase().close();
+});
+```
+
+## Remote Sync Best Practices (Dropbox)
+
+### Sync Strategy
+
+```typescript
+// ✅ DO: Track sync status per entity
+interface SyncableEntity {
+  syncStatus: 'pending' | 'syncing' | 'synced' | 'conflict';
+  syncedAt: number | null;
+  checksum: string;
+}
+
+// ✅ DO: Use checksums to detect conflicts
+const localChecksum = calculateChecksum(localContent);
+const remoteChecksum = await fetchRemoteChecksum(id);
+if (localChecksum !== remoteChecksum) {
+  // Handle conflict
+}
+
+// ✅ DO: Implement retry logic with exponential backoff
+async function syncWithRetry(maxAttempts = 3): Promise<void> {
+  for (let attempt = 1; attempt <= maxAttempts; attempt++) {
+    try {
+      await sync();
+      return;
+    } catch (error) {
+      if (attempt === maxAttempts) throw error;
+      await sleep(Math.pow(2, attempt) * 1000);
+    }
+  }
+}
+```
+
+### Offline-First Approach
+
+```typescript
+// ✅ DO: Always write to local first
+async function savePost(post: PostData): Promise<void> {
+  // 1. Save to local file system
+  await writePostFile(post);
+  
+  // 2. Update local database
+  await updateLocalDatabase(post);
+  
+  // 3. Mark for sync (don't wait for network)
+  await markForSync(post.id);
+}
+
+// ✅ DO: Queue sync operations
+const syncQueue: SyncOperation[] = [];
+
+function queueSync(operation: SyncOperation): void {
+  syncQueue.push(operation);
+  processSyncQueue(); // Non-blocking
+}
+
+// ✅ DO: Handle network state changes
+window.addEventListener('online', () => {
+  syncEngine.processPendingChanges();
+});
+```
+
+### Conflict Resolution
+
+```typescript
+// ✅ DO: Implement clear conflict resolution strategy
+type ConflictResolution = 'local-wins' | 'remote-wins' | 'manual';
+
+interface ConflictInfo {
+  entityId: string;
+  localVersion: EntityVersion;
+  remoteVersion: EntityVersion;
+  resolution?: ConflictResolution;
+}
+
+// ✅ DO: Allow user to resolve conflicts manually when needed
+async function resolveConflict(
+  conflict: ConflictInfo,
+  resolution: ConflictResolution
+): Promise<void> {
+  switch (resolution) {
+    case 'local-wins':
+      await pushLocalToRemote(conflict.entityId);
+      break;
+    case 'remote-wins':
+      await pullRemoteToLocal(conflict.entityId);
+      break;
+    case 'manual':
+      await showConflictResolutionUI(conflict);
+      break;
+  }
+}
+```
+
+### Sync Logging
+
+```typescript
+// ✅ DO: Log all sync operations for debugging
+await db.insert(syncLog).values({
+  id: generateId(),
+  entityType: 'post',
+  entityId: postId,
+  operation: 'push',
+  status: 'success',
+  timestamp: Date.now(),
+});
+
+// ✅ DO: Implement sync status visibility in UI
+const pendingCount = await syncEngine.getPendingChangesCount();
+statusBar.setSyncStatus({ pending: pendingCount });
+```
+
+## React & State Management
+
+### Zustand Patterns
+
+```typescript
+// ✅ DO: Keep store slices focused
+interface AppState {
+  // UI state
+  activeView: 'posts' | 'media' | 'settings';
+  sidebarVisible: boolean;
+  
+  // Data
+  posts: PostData[];
+  media: MediaData[];
+  
+  // Actions
+  setActiveView: (view: AppState['activeView']) => void;
+  setPosts: (posts: PostData[]) => void;
+}
+
+// ✅ DO: Use selectors for derived state
+const draftCount = useAppStore((state) => 
+  state.posts.filter(p => p.status === 'draft').length
+);
+
+// ❌ DON'T: Store derived data
+interface BadState {
+  posts: PostData[];
+  draftCount: number; // Bad - derived from posts
+}
+```
+
+### Component Patterns
+
+```typescript
+// ✅ DO: Use composition over prop drilling
+<EditorProvider postId={selectedPostId}>
+  <EditorToolbar />
+  <EditorContent />
+  <EditorStatusBar />
+</EditorProvider>
+
+// ✅ DO: Separate container and presentation components
+// Container: handles data fetching/IPC
+// Presentation: pure rendering based on props
+
+// ❌ DON'T: Put IPC calls in deeply nested components
+const DeepComponent = () => {
+  // Bad - hard to test and maintain
+  const handleClick = async () => {
+    await window.electronAPI.posts.save(data);
+  };
+};
+```
+
+## File Naming Conventions
+
+```
+src/
+  main/
+    database/
+      schema.ts        # Drizzle schema definitions
+      connection.ts    # Database connection management
+    engine/
+      PostEngine.ts    # PascalCase for classes
+      TaskManager.ts
+    ipc/
+      handlers.ts      # camelCase for modules
+  renderer/
+    components/
+      Editor/
+        Editor.tsx     # PascalCase for components
+        Editor.css     # Matching CSS file
+        index.ts       # Barrel exports
+    store/
+      appStore.ts      # camelCase for stores
+    types/
+      electron.d.ts    # Type declarations
+```
+
+## Test-Driven Development (TDD) Requirements
+
+> **⚠️ CRITICAL: This project follows STRICT Test-Driven Development.**
+>
+> Writing implementation code before tests is NOT acceptable.
+> Pull requests without corresponding tests will be rejected.
+
+**All new features and bug fixes MUST have tests written BEFORE implementation.**
+
+### The Golden Rule: Test Real Implementations
+
+```typescript
+// ✅ CORRECT: Import and test the REAL class
+import { PostEngine } from '../../src/main/engine/PostEngine';
+
+describe('PostEngine', () => {
+  let postEngine: PostEngine;
+
+  beforeEach(() => {
+    // Mock only external dependencies, NOT the class under test
+    postEngine = new PostEngine(mockDatabase, mockFileSystem);
+  });
+
+  it('should create a post with generated slug from title', async () => {
+    const result = await postEngine.createPost({ title: 'Hello World' });
+    expect(result.slug).toBe('hello-world');
+  });
+});
+
+// ❌ WRONG: Testing inline helper functions instead of real implementations
+describe('PostEngine', () => {
+  it('should generate slug', () => {
+    // This tests a local function, not the actual PostEngine class!
+    const generateSlug = (title: string) => title.toLowerCase().replace(/ /g, '-');
+    expect(generateSlug('Hello World')).toBe('hello-world');
+  });
+});
+```
+
+### TDD Workflow (Red-Green-Refactor)
+
+```typescript
+// 1. RED: Write a failing test first that uses the REAL implementation
+import { PostEngine } from '../../src/main/engine/PostEngine';
+
+describe('PostEngine.createPost', () => {
+  it('should create a post with generated slug from title', async () => {
+    const postEngine = new PostEngine(mockDb, mockFs);
+    const result = await postEngine.createPost({ title: 'Hello World' });
+    expect(result.slug).toBe('hello-world');
+  });
+});
+
+// 2. GREEN: Write minimal code in PostEngine to pass the test
+// 3. REFACTOR: Improve the code while keeping tests green
+```
+
+### Test File Structure
+
+```
+tests/
+├── setup.ts                    # Global test configuration
+├── utils/
+│   ├── factories.ts           # Mock data factories
+│   └── index.ts               # Utility exports
+└── engine/
+    ├── TaskManager.test.ts    # TaskManager unit tests
+    ├── PostEngine.test.ts     # PostEngine unit tests
+    ├── MediaEngine.test.ts    # MediaEngine unit tests
+    └── SyncEngine.test.ts     # SyncEngine unit tests
+```
+
+### Test Naming Conventions
+
+```typescript
+// ✅ DO: Use descriptive test names that explain behavior
+it('should generate slug from title with lowercase and hyphens', () => {});
+it('should emit taskCompleted event when task finishes', () => {});
+it('should return null when post not found', () => {});
+
+// ❌ DON'T: Use vague test names
+it('works', () => {});
+it('test createPost', () => {});
+```
+
+### Mock Factory Patterns
+
+```typescript
+// ✅ DO: Use factory functions with overrides
+import { createMockPost, createMockMedia } from '../utils/factories';
+
+const post = createMockPost({ 
+  title: 'Custom Title',
+  status: 'published' 
+});
+
+// ✅ DO: Create specialized factories for common scenarios
+const draftPost = createMockPost({ status: 'draft' });
+const publishedPost = createMockPublishedPost();
+const imageMedia = createMockMedia({ mimeType: 'image/jpeg' });
+const pdfMedia = createMockPdfMedia();
+```
+
+### Testing Async Code
+
+```typescript
+// ✅ DO: Use async/await in tests
+it('should save post to filesystem', async () => {
+  const post = createMockPost();
+  await postEngine.createPost(post);
+  
+  expect(fs.writeFile).toHaveBeenCalled();
+});
+
+// ✅ DO: Test event emissions
+it('should emit postCreated event', async () => {
+  const handler = vi.fn();
+  postEngine.on('postCreated', handler);
+  
+  await postEngine.createPost({ title: 'Test' });
+  
+  expect(handler).toHaveBeenCalledWith(
+    expect.objectContaining({ title: 'Test' })
+  );
+});
+
+// ✅ DO: Test error cases
+it('should throw when file write fails', async () => {
+  vi.mocked(fs.writeFile).mockRejectedValueOnce(new Error('ENOSPC'));
+  
+  await expect(postEngine.createPost({ title: 'Test' }))
+    .rejects.toThrow('ENOSPC');
+});
+```
+
+### Mocking Dependencies
+
+```typescript
+// ✅ DO: Mock at module level for consistent behavior
+vi.mock('../../src/main/database', () => ({
+  getDatabase: vi.fn(() => mockDatabase),
+}));
+
+vi.mock('fs/promises', () => ({
+  readFile: vi.fn(),
+  writeFile: vi.fn(),
+  unlink: vi.fn(),
+}));
+
+// ✅ DO: Reset mocks between tests
+beforeEach(() => {
+  vi.clearAllMocks();
+});
+
+afterEach(() => {
+  vi.restoreAllMocks();
+});
+```
+
+### Test Coverage Requirements
+
+- **Minimum coverage**: 80% for engine classes
+- **Critical paths**: 100% coverage for data mutations
+- **Edge cases**: Null handling, empty arrays, error conditions
+
+```bash
+# Run tests with coverage
+npm run test:coverage
+
+# View coverage report
+open coverage/index.html
+```
+
+### When to Write Tests
+
+| Scenario | Test Requirement |
+|----------|-----------------|
+| New engine method | Unit tests BEFORE implementation |
+| Bug fix | Failing test that reproduces bug FIRST |
+| Refactoring | Ensure existing tests pass BEFORE and AFTER |
+| IPC handler | Integration test with mocked engine |
+| UI component | Behavior tests for user interactions |
+
+### Test Commands
+
+```bash
+npm run test           # Run all tests once
+npm run test:watch     # Run tests in watch mode
+npm run test:coverage  # Generate coverage report
+npm run test:ui        # Open Vitest UI
+```
+
+### Vitest Configuration
+
+Tests are configured in `vitest.config.ts` with:
+- Global test utilities (describe, it, expect, vi)
+- Node environment for main process tests
+- Coverage reports via v8
+- Custom setup file for Electron mocks
+
+## Testing Considerations
+
+```typescript
+// ✅ DO: Design for testability
+// - Engine classes should accept dependencies via constructor
+// - Use interfaces for external dependencies
+// - Keep pure business logic separate from I/O
+
+class PostEngine {
+  constructor(
+    private db: DatabaseConnection,
+    private fs: FileSystemAdapter, // Mockable
+    private eventEmitter: EventEmitter
+  ) {}
+}
+
+// ✅ DO: Use factory functions for test data
+function createTestPost(overrides?: Partial<PostData>): PostData {
+  return {
+    id: 'test-id',
+    title: 'Test Post',
+    status: 'draft',
+    ...overrides,
+  };
+}
+
+// ✅ DO: Test pure functions in isolation
+describe('generateSlug', () => {
+  it('should convert to lowercase', () => {
+    expect(generateSlug('Hello World')).toBe('hello-world');
+  });
+  
+  it('should replace special characters', () => {
+    expect(generateSlug('Hello, World!')).toBe('hello-world');
+  });
+});
+```
+
+## Common Patterns in This Codebase
+
+### Creating a New Engine Method
+
+```typescript
+// 1. Add method to engine class
+async newOperation(input: InputType): Promise<OutputType> {
+  // Validate input
+  // Perform operation
+  // Emit event for UI updates
+  this.emit('operationCompleted', result);
+  return result;
+}
+
+// 2. Add IPC handler
+ipcMain.handle('entity:operation', async (_event, input) => {
+  return engine.newOperation(input);
+});
+
+// 3. Expose in preload
+entity: {
+  operation: (input) => ipcRenderer.invoke('entity:operation', input),
+}
+
+// 4. Update store and UI
+```
+
+### Adding a New Database Table
+
+```typescript
+// 1. Define in schema.ts with proper types
+export const newTable = sqliteTable('new_table', {
+  id: text('id').primaryKey(),
+  // ... columns
+});
+
+// 2. Export types
+export type NewTableRow = typeof newTable.$inferSelect;
+export type NewTableInsert = typeof newTable.$inferInsert;
+
+// 3. Add CREATE TABLE to migrations in connection.ts
+// 4. Create corresponding engine class
+```
+
+## Security Reminders
+
+- Never log sensitive data (auth tokens, passwords)
+- Validate all IPC inputs before processing
+- Use `contextIsolation: true` and `sandbox: false` only when necessary
+- Store Dropbox auth tokens in secure storage, not in code
+- Sanitize user input before rendering (XSS prevention)

drizzle/0004_overjoyed_paper_doll.sql

@@ -0,0 +1,8 @@
+CREATE TABLE `generated_file_hashes` (
+	`project_id` text NOT NULL,
+	`relative_path` text NOT NULL,
+	`content_hash` text NOT NULL,
+	`updated_at` integer NOT NULL
+);
+--> statement-breakpoint
+CREATE UNIQUE INDEX `generated_file_hashes_project_path_idx` ON `generated_file_hashes` (`project_id`,`relative_path`);

drizzle/meta/0004_snapshot.json

@@ -0,0 +1,813 @@
+{
+  "version": "6",
+  "dialect": "sqlite",
+  "id": "46702982-9f8a-4c7e-8fb6-3270c3fbe120",
+  "prevId": "602674b9-0b1e-4d1b-aed3-125bac4d1dda",
+  "tables": {
+    "chat_conversations": {
+      "name": "chat_conversations",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "model": {
+          "name": "model",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "copilot_session_id": {
+          "name": "copilot_session_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "chat_messages": {
+      "name": "chat_messages",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "conversation_id": {
+          "name": "conversation_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "role": {
+          "name": "role",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "content": {
+          "name": "content",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "tool_call_id": {
+          "name": "tool_call_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "tool_calls": {
+          "name": "tool_calls",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "generated_file_hashes": {
+      "name": "generated_file_hashes",
+      "columns": {
+        "project_id": {
+          "name": "project_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "relative_path": {
+          "name": "relative_path",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "content_hash": {
+          "name": "content_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "generated_file_hashes_project_path_idx": {
+          "name": "generated_file_hashes_project_path_idx",
+          "columns": [
+            "project_id",
+            "relative_path"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "import_definitions": {
+      "name": "import_definitions",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "project_id": {
+          "name": "project_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "wxr_file_path": {
+          "name": "wxr_file_path",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "uploads_folder_path": {
+          "name": "uploads_folder_path",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "last_analysis_result": {
+          "name": "last_analysis_result",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "media": {
+      "name": "media",
+      "columns": {
+        "project_id": {
+          "name": "project_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "filename": {
+          "name": "filename",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "original_name": {
+          "name": "original_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "mime_type": {
+          "name": "mime_type",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "size": {
+          "name": "size",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "width": {
+          "name": "width",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "height": {
+          "name": "height",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "alt": {
+          "name": "alt",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "caption": {
+          "name": "caption",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "author": {
+          "name": "author",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "file_path": {
+          "name": "file_path",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "sidecar_path": {
+          "name": "sidecar_path",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "checksum": {
+          "name": "checksum",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "tags": {
+          "name": "tags",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "post_links": {
+      "name": "post_links",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "source_post_id": {
+          "name": "source_post_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "target_post_id": {
+          "name": "target_post_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "link_text": {
+          "name": "link_text",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "post_media": {
+      "name": "post_media",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "project_id": {
+          "name": "project_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "post_id": {
+          "name": "post_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "media_id": {
+          "name": "media_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "sort_order": {
+          "name": "sort_order",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "post_media_post_media_idx": {
+          "name": "post_media_post_media_idx",
+          "columns": [
+            "post_id",
+            "media_id"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "posts": {
+      "name": "posts",
+      "columns": {
+        "project_id": {
+          "name": "project_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "title": {
+          "name": "title",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "slug": {
+          "name": "slug",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "excerpt": {
+          "name": "excerpt",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "content": {
+          "name": "content",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'draft'"
+        },
+        "author": {
+          "name": "author",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "published_at": {
+          "name": "published_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "file_path": {
+          "name": "file_path",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "''"
+        },
+        "checksum": {
+          "name": "checksum",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "tags": {
+          "name": "tags",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "categories": {
+          "name": "categories",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "published_title": {
+          "name": "published_title",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "published_content": {
+          "name": "published_content",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "published_tags": {
+          "name": "published_tags",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "published_categories": {
+          "name": "published_categories",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "published_excerpt": {
+          "name": "published_excerpt",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "posts_project_slug_idx": {
+          "name": "posts_project_slug_idx",
+          "columns": [
+            "project_id",
+            "slug"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "projects": {
+      "name": "projects",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "slug": {
+          "name": "slug",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "description": {
+          "name": "description",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "data_path": {
+          "name": "data_path",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "is_active": {
+          "name": "is_active",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        }
+      },
+      "indexes": {
+        "projects_slug_unique": {
+          "name": "projects_slug_unique",
+          "columns": [
+            "slug"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "settings": {
+      "name": "settings",
+      "columns": {
+        "key": {
+          "name": "key",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "value": {
+          "name": "value",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "tags": {
+      "name": "tags",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "project_id": {
+          "name": "project_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "color": {
+          "name": "color",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "tags_project_name_idx": {
+          "name": "tags_project_name_idx",
+          "columns": [
+            "project_id",
+            "name"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    }
+  },
+  "views": {},
+  "enums": {},
+  "_meta": {
+    "schemas": {},
+    "tables": {},
+    "columns": {}
+  },
+  "internal": {
+    "indexes": {}
+  }
+}

drizzle/meta/_journal.json

@@ -29,6 +29,13 @@
       "when": 1771168311850,
       "tag": "0003_foamy_whiplash",
       "breakpoints": true
+    },
+    {
+      "idx": 4,
+      "version": "6",
+      "when": 1771605253203,
+      "tag": "0004_overjoyed_paper_doll",
+      "breakpoints": true
     }
   ]
 }

src/main/database/generatedFileHashStore.ts

@@ -0,0 +1,36 @@
+import { getDatabase } from './connection';
+
+export async function getGeneratedFileHash(projectId: string, relativePath: string): Promise<string | null> {
+  const client = getDatabase().getLocalClient();
+  if (!client) {
+    throw new Error('Database client not available');
+  }
+
+  const result = await client.execute({
+    sql: 'SELECT content_hash FROM generated_file_hashes WHERE project_id = ? AND relative_path = ? LIMIT 1',
+    args: [projectId, relativePath],
+  });
+
+  if (!result.rows[0] || typeof result.rows[0].content_hash !== 'string') {
+    return null;
+  }
+
+  return result.rows[0].content_hash;
+}
+
+export async function setGeneratedFileHash(projectId: string, relativePath: string, hash: string): Promise<void> {
+  const client = getDatabase().getLocalClient();
+  if (!client) {
+    throw new Error('Database client not available');
+  }
+
+  await client.execute({
+    sql: `
+      INSERT INTO generated_file_hashes (project_id, relative_path, content_hash, updated_at)
+      VALUES (?, ?, ?, ?)
+      ON CONFLICT(project_id, relative_path)
+      DO UPDATE SET content_hash = excluded.content_hash, updated_at = excluded.updated_at
+    `,
+    args: [projectId, relativePath, hash, Date.now()],
+  });
+}

src/main/database/index.ts

@@ -1,2 +1,3 @@
 export * from './schema';
 export * from './connection';
+export * from './generatedFileHashStore';

src/main/database/schema.ts

@@ -73,6 +73,16 @@ export const settings = sqliteTable('settings', {
   updatedAt: integer('updated_at', { mode: 'timestamp' }).notNull(),
 });
 
+// Generated file hashes - tracks html/xml output content hashes to skip unchanged writes
+export const generatedFileHashes = sqliteTable('generated_file_hashes', {
+  projectId: text('project_id').notNull(),
+  relativePath: text('relative_path').notNull(),
+  contentHash: text('content_hash').notNull(),
+  updatedAt: integer('updated_at', { mode: 'timestamp' }).notNull(),
+}, (table) => ({
+  projectPathIdx: uniqueIndex('generated_file_hashes_project_path_idx').on(table.projectId, table.relativePath),
+}));
+
 // Post links - tracks internal links between posts
 export const postLinks = sqliteTable('post_links', {
   id: text('id').primaryKey(),
@@ -150,6 +160,8 @@ export type Media = typeof media.$inferSelect;
 export type NewMedia = typeof media.$inferInsert;
 export type Setting = typeof settings.$inferSelect;
 export type NewSetting = typeof settings.$inferInsert;
+export type GeneratedFileHash = typeof generatedFileHashes.$inferSelect;
+export type NewGeneratedFileHash = typeof generatedFileHashes.$inferInsert;
 export type PostLink = typeof postLinks.$inferSelect;
 export type NewPostLink = typeof postLinks.$inferInsert;
 export type PostMediaLink = typeof postMedia.$inferSelect;

src/main/engine/BlogGenerationEngine.ts

@@ -1,8 +1,18 @@
 import * as path from 'path';
 import * as fs from 'fs/promises';
 import * as crypto from 'crypto';
-import { getDatabase } from '../database';
+import { readFile } from 'node:fs/promises';
+import { getGeneratedFileHash, setGeneratedFileHash } from '../database/generatedFileHashStore';
 import { getPostEngine, type PostData } from './PostEngine';
+import { getMediaEngine, type MediaData } from './MediaEngine';
+import { getPostMediaEngine } from './PostMediaEngine';
+import {
+  PageRenderer,
+  PREVIEW_ASSETS,
+  PREVIEW_IMAGE_ASSETS,
+  buildCanonicalPostPath,
+  type HtmlRewriteContext,
+} from './PageRenderer';
 
 const DEFAULT_MAX_POSTS_PER_PAGE = 50;
 const MIN_MAX_POSTS_PER_PAGE = 1;
@@ -15,8 +25,13 @@ export interface BlogGenerationOptions {
   dataDir: string;
   baseUrl: string;
   maxPostsPerPage?: number;
+  language?: string;
+  pageTitle?: string;
+  sections?: BlogGenerationSection[];
 }
 
+export type BlogGenerationSection = 'core' | 'single' | 'category' | 'tag' | 'date';
+
 export interface BlogGenerationResult {
   path: string;
   urlCount: number;
@@ -25,6 +40,7 @@ export interface BlogGenerationResult {
   tagCount: number;
   categoryCount: number;
   archiveCount: number;
+  pagesGenerated: number;
   feeds: {
     rssPath: string;
     atomPath: string;
@@ -145,52 +161,46 @@ function computeContentHash(content: string): string {
   return crypto.createHash('sha256').update(content).digest('hex');
 }
 
-async function getHashSettingValue(key: string): Promise<string | null> {
-  const client = getDatabase().getLocalClient();
-  if (!client) {
-    throw new Error('Database client not available');
-  }
-
-  const result = await client.execute({
-    sql: 'SELECT value FROM settings WHERE key = ? LIMIT 1',
-    args: [key],
-  });
-
-  if (!result.rows[0] || typeof result.rows[0].value !== 'string') {
-    return null;
-  }
-  return result.rows[0].value;
-}
-
-async function setHashSettingValue(key: string, value: string): Promise<void> {
-  const client = getDatabase().getLocalClient();
-  if (!client) {
-    throw new Error('Database client not available');
-  }
-
-  await client.execute({
-    sql: 'INSERT INTO settings (key, value, updated_at) VALUES (?, ?, ?) ON CONFLICT(key) DO UPDATE SET value = excluded.value, updated_at = excluded.updated_at',
-    args: [key, value, new Date()],
-  });
-}
-
-async function writeFileIfHashChanged(filePath: string, content: string, hashKey: string): Promise<boolean> {
+async function writeFileIfHashChanged(projectId: string, filePath: string, relativePath: string, content: string): Promise<boolean> {
   const hash = computeContentHash(content);
-  const previousHash = await getHashSettingValue(hashKey);
+  const previousHash = await getGeneratedFileHash(projectId, relativePath);
   if (previousHash === hash) {
     return false;
   }
   await fs.writeFile(filePath, content, 'utf-8');
-  await setHashSettingValue(hashKey, hash);
+  await setGeneratedFileHash(projectId, relativePath, hash);
   return true;
 }
 
+async function writeHtmlPage(projectId: string, htmlDir: string, urlPath: string, content: string): Promise<boolean> {
+  const normalizedPath = urlPath.replace(/^\//, '');
+  const filePath = normalizedPath
+    ? path.join(htmlDir, normalizedPath, 'index.html')
+    : path.join(htmlDir, 'index.html');
+  const relativePath = normalizedPath ? `${normalizedPath}/index.html` : 'index.html';
+  await fs.mkdir(path.dirname(filePath), { recursive: true });
+  return writeFileIfHashChanged(projectId, filePath, relativePath, content);
+}
+
 export class BlogGenerationEngine {
   private readonly postEngine = getPostEngine();
+  private readonly mediaEngine = getMediaEngine();
+  private readonly postMediaEngine = getPostMediaEngine();
 
   async generate(options: BlogGenerationOptions, onProgress: (progress: number, message?: string) => void): Promise<BlogGenerationResult> {
     onProgress(0, 'Loading posts...');
 
+    const selectedSections = new Set<BlogGenerationSection>(
+      options.sections && options.sections.length > 0
+        ? options.sections
+        : ['core', 'single', 'category', 'tag', 'date'],
+    );
+    const includeCore = selectedSections.has('core');
+    const includeSingle = selectedSections.has('single');
+    const includeCategory = selectedSections.has('category');
+    const includeTag = selectedSections.has('tag');
+    const includeDate = selectedSections.has('date');
+
     const maxPostsPerPage = clampMaxPostsPerPage(options.maxPostsPerPage);
     const publishedCandidates = await this.postEngine.getPostsFiltered({ status: 'published' });
     const draftCandidates = await this.postEngine.getPostsFiltered({ status: 'draft' });
@@ -219,7 +229,7 @@ export class BlogGenerationEngine {
       .sort((a, b) => b.createdAt.getTime() - a.createdAt.getTime());
     const feedPosts = publishedPosts.slice(0, maxPostsPerPage);
 
-    onProgress(10, `Found ${publishedPosts.length} published posts`);
+    onProgress(3, `Found ${publishedPosts.length} published posts`);
 
     const now = new Date().toISOString();
     const allTags = new Set<string>();
@@ -258,7 +268,7 @@ export class BlogGenerationEngine {
 
     const latestPostUpdatedAt = publishedPosts[0]?.updatedAt.toISOString() || now;
 
-    onProgress(40, 'Building sitemap XML...');
+    onProgress(5, 'Building sitemap XML...');
 
     const urls: string[] = [];
     urls.push(buildSitemapUrl(`${options.baseUrl}/`, latestPostUpdatedAt, 'daily', '1.0'));
@@ -266,7 +276,6 @@ export class BlogGenerationEngine {
       urls.push(buildSitemapUrl(post.loc, post.lastmod, 'monthly', '0.8'));
     }
 
-    onProgress(55, 'Adding archive pages...');
     for (const [year, lastmod] of Array.from(years.entries()).sort((a, b) => b[0] - a[0])) {
       urls.push(buildSitemapUrl(`${options.baseUrl}/${year}`, lastmod.toISOString(), 'monthly', '0.5'));
     }
@@ -277,17 +286,15 @@ export class BlogGenerationEngine {
       urls.push(buildSitemapUrl(`${options.baseUrl}/${ymd}`, lastmod.toISOString(), 'monthly', '0.4'));
     }
 
-    onProgress(70, 'Adding category pages...');
     for (const category of Array.from(allCategories).sort()) {
       urls.push(buildSitemapUrl(`${options.baseUrl}/category/${encodeURIComponent(category)}`, latestPostUpdatedAt, 'weekly', '0.6'));
     }
 
-    onProgress(80, 'Adding tag pages...');
     for (const tag of Array.from(allTags).sort()) {
       urls.push(buildSitemapUrl(`${options.baseUrl}/tag/${encodeURIComponent(tag)}`, latestPostUpdatedAt, 'weekly', '0.6'));
     }
 
-    onProgress(85, 'Building RSS and Atom feeds...');
+    onProgress(8, 'Building RSS and Atom feeds...');
 
     const sitemapXml = [
       '<?xml version="1.0" encoding="UTF-8"?>',
@@ -382,22 +389,93 @@ export class BlogGenerationEngine {
       '',
     ].join('\n');
 
-    onProgress(92, 'Writing sitemap and feeds...');
-
     const htmlDir = path.join(options.dataDir, 'html');
     await fs.mkdir(htmlDir, { recursive: true });
     const sitemapPath = path.join(htmlDir, 'sitemap.xml');
     const rssPath = path.join(htmlDir, 'rss.xml');
     const atomPath = path.join(htmlDir, 'atom.xml');
-    const hashKeyPrefix = `project:${options.projectId}:generation-hash`;
 
-    const [sitemapWritten, rssWritten, atomWritten] = await Promise.all([
-      writeFileIfHashChanged(sitemapPath, sitemapXml, `${hashKeyPrefix}:sitemap.xml`),
-      writeFileIfHashChanged(rssPath, rssXml, `${hashKeyPrefix}:rss.xml`),
-      writeFileIfHashChanged(atomPath, atomXml, `${hashKeyPrefix}:atom.xml`),
-    ]);
+    const estimatedUnitsBySection = this.estimateGenerationUnitsBySection(
+      publishedPosts,
+      allCategories,
+      allTags,
+      years,
+      yearMonths,
+      yearMonthDays,
+      maxPostsPerPage,
+    );
+    const totalEstimatedUnits = [
+      includeCore ? estimatedUnitsBySection.core : 0,
+      includeSingle ? estimatedUnitsBySection.single : 0,
+      includeCategory ? estimatedUnitsBySection.category : 0,
+      includeTag ? estimatedUnitsBySection.tag : 0,
+      includeDate ? estimatedUnitsBySection.date : 0,
+    ].reduce((sum, value) => sum + value, 0);
+    let completedUnits = 0;
 
-    onProgress(100, `Sitemap and feeds generated (${feedPosts.length} feed posts)`);
+    const reportUnitProgress = (message: string) => {
+      if (totalEstimatedUnits <= 0) {
+        return;
+      }
+      completedUnits += 1;
+      const progress = 10 + Math.floor((completedUnits / totalEstimatedUnits) * 85);
+      onProgress(Math.min(95, progress), message);
+    };
+
+    let sitemapWritten = false;
+    let rssWritten = false;
+    let atomWritten = false;
+
+    if (includeCore) {
+      onProgress(10, 'Writing sitemap and feeds...');
+      sitemapWritten = await writeFileIfHashChanged(options.projectId, sitemapPath, 'sitemap.xml', sitemapXml);
+      reportUnitProgress('Sitemap written');
+      rssWritten = await writeFileIfHashChanged(options.projectId, rssPath, 'rss.xml', rssXml);
+      reportUnitProgress('RSS feed written');
+      atomWritten = await writeFileIfHashChanged(options.projectId, atomPath, 'atom.xml', atomXml);
+      reportUnitProgress('Atom feed written');
+
+      onProgress(15, 'Copying assets...');
+      await this.copyAssets(htmlDir);
+      reportUnitProgress('Assets copied');
+    }
+
+    const pageTitle = options.pageTitle || options.projectName;
+    const language = options.language || 'en';
+    const pageContext = { page_title: pageTitle, language };
+
+    const pageRenderer = new PageRenderer(this.mediaEngine, this.postMediaEngine);
+    const rewriteContext = this.buildHtmlRewriteContext(publishedPosts);
+
+    let pagesGenerated = 0;
+
+    if (includeCore) {
+      onProgress(20, 'Generating root pages...');
+      pagesGenerated += await this.generateRootPages(options.projectId, publishedPosts, rewriteContext, maxPostsPerPage, htmlDir, pageContext, pageRenderer, reportUnitProgress);
+      pagesGenerated += await this.generatePageRoutes(options.projectId, publishedPosts, rewriteContext, htmlDir, pageContext, pageRenderer, reportUnitProgress);
+    }
+
+    if (includeSingle) {
+      onProgress(35, 'Generating single post pages...');
+      pagesGenerated += await this.generateSinglePostPages(options.projectId, publishedPosts, rewriteContext, htmlDir, pageContext, pageRenderer, reportUnitProgress);
+    }
+
+    if (includeCategory) {
+      onProgress(50, 'Generating category pages...');
+      pagesGenerated += await this.generateCategoryPages(options.projectId, publishedPosts, allCategories, rewriteContext, maxPostsPerPage, htmlDir, pageContext, pageRenderer, reportUnitProgress);
+    }
+
+    if (includeTag) {
+      onProgress(65, 'Generating tag pages...');
+      pagesGenerated += await this.generateTagPages(options.projectId, publishedPosts, allTags, rewriteContext, maxPostsPerPage, htmlDir, pageContext, pageRenderer, reportUnitProgress);
+    }
+
+    if (includeDate) {
+      onProgress(80, 'Generating date archive pages...');
+      pagesGenerated += await this.generateDateArchivePages(options.projectId, publishedPosts, years, yearMonths, yearMonthDays, rewriteContext, maxPostsPerPage, htmlDir, pageContext, pageRenderer, reportUnitProgress);
+    }
+
+    onProgress(100, `Site generated (${publishedPosts.length} posts, ${pagesGenerated} pages)`);
 
     return {
       path: sitemapPath,
@@ -407,6 +485,7 @@ export class BlogGenerationEngine {
       tagCount: allTags.size,
       categoryCount: allCategories.size,
       archiveCount: years.size + yearMonths.size + yearMonthDays.size,
+      pagesGenerated,
       feeds: {
         rssPath,
         atomPath,
@@ -418,6 +497,395 @@ export class BlogGenerationEngine {
       },
     };
   }
+
+  private async generatePageRoutes(
+    projectId: string,
+    posts: PostData[],
+    rewriteContext: HtmlRewriteContext,
+    htmlDir: string,
+    pageContext: { page_title: string; language: string },
+    pageRenderer: PageRenderer,
+    onPageGenerated: (message: string) => void,
+  ): Promise<number> {
+    let count = 0;
+    const pagePosts = posts.filter((post) => (post.categories || []).includes('page'));
+
+    for (const post of pagePosts) {
+      const html = await pageRenderer.renderSinglePost(post, rewriteContext, pageContext);
+      await writeHtmlPage(projectId, htmlDir, post.slug, html);
+      count++;
+      onPageGenerated(`Generated /${post.slug}`);
+    }
+
+    return count;
+  }
+
+  private buildHtmlRewriteContext(publishedPosts: PostData[]): HtmlRewriteContext {
+    const canonicalPostPathBySlug = new Map<string, string>();
+    for (const post of publishedPosts) {
+      canonicalPostPathBySlug.set(post.slug, buildCanonicalPostPath(post));
+    }
+
+    const canonicalMediaPathBySourcePath = new Map<string, string>();
+
+    return {
+      canonicalPostPathBySlug,
+      canonicalMediaPathBySourcePath,
+    };
+  }
+
+  private async copyAssets(htmlDir: string): Promise<void> {
+    const assetsDir = path.join(htmlDir, 'assets');
+    const imagesDir = path.join(htmlDir, 'images');
+    await fs.mkdir(assetsDir, { recursive: true });
+    await fs.mkdir(imagesDir, { recursive: true });
+
+    for (const [filename, definition] of Object.entries(PREVIEW_ASSETS)) {
+      const sourcePath = require.resolve(definition.modulePath);
+      const destPath = path.join(assetsDir, filename);
+      const content = await readFile(sourcePath);
+      await fs.writeFile(destPath, content);
+    }
+
+    for (const [filename, definition] of Object.entries(PREVIEW_IMAGE_ASSETS)) {
+      const sourcePath = require.resolve(definition.modulePath);
+      const destPath = path.join(imagesDir, filename);
+      const content = await readFile(sourcePath);
+      await fs.writeFile(destPath, content);
+    }
+  }
+
+  private async generateRootPages(
+    projectId: string,
+    posts: PostData[],
+    rewriteContext: HtmlRewriteContext,
+    maxPostsPerPage: number,
+    htmlDir: string,
+    pageContext: { page_title: string; language: string },
+    pageRenderer: PageRenderer,
+    onPageGenerated: (message: string) => void,
+  ): Promise<number> {
+    const totalPages = Math.max(1, Math.ceil(posts.length / maxPostsPerPage));
+    let count = 0;
+
+    for (let page = 1; page <= totalPages; page++) {
+      const offset = (page - 1) * maxPostsPerPage;
+      const pagePosts = posts.slice(offset, offset + maxPostsPerPage);
+      if (pagePosts.length === 0) break;
+
+      const html = await pageRenderer.renderPostList(pagePosts, rewriteContext, {
+        archiveGrouping: false,
+        routeKind: 'date',
+        archiveContext: { kind: 'root' },
+        basePathname: '/',
+        pagination: { page, maxPostsPerPage, totalPosts: posts.length },
+        ...pageContext,
+      });
+
+      if (html) {
+        const urlPath = page === 1 ? '' : `page/${page}`;
+        await writeHtmlPage(projectId, htmlDir, urlPath, html);
+        count++;
+        onPageGenerated(urlPath ? `Generated /${urlPath}` : 'Generated /');
+      }
+    }
+
+    return count;
+  }
+
+  private async generateSinglePostPages(
+    projectId: string,
+    posts: PostData[],
+    rewriteContext: HtmlRewriteContext,
+    htmlDir: string,
+    pageContext: { page_title: string; language: string },
+    pageRenderer: PageRenderer,
+    onPageGenerated: (message: string) => void,
+  ): Promise<number> {
+    let count = 0;
+
+    for (const post of posts) {
+      const createdAt = resolvePostCreatedAt(post);
+      const year = createdAt.getFullYear();
+      const month = String(createdAt.getMonth() + 1).padStart(2, '0');
+      const day = String(createdAt.getDate()).padStart(2, '0');
+
+      const html = await pageRenderer.renderSinglePost(post, rewriteContext, pageContext);
+      const urlPath = `${year}/${month}/${day}/${post.slug}`;
+      await writeHtmlPage(projectId, htmlDir, urlPath, html);
+      count++;
+      onPageGenerated(`Generated /${urlPath}`);
+    }
+
+    return count;
+  }
+
+  private async generateCategoryPages(
+    projectId: string,
+    posts: PostData[],
+    allCategories: Set<string>,
+    rewriteContext: HtmlRewriteContext,
+    maxPostsPerPage: number,
+    htmlDir: string,
+    pageContext: { page_title: string; language: string },
+    pageRenderer: PageRenderer,
+    onPageGenerated: (message: string) => void,
+  ): Promise<number> {
+    let count = 0;
+
+    for (const category of Array.from(allCategories).sort()) {
+      const categoryPosts = posts.filter((post) => (post.categories || []).includes(category));
+      if (categoryPosts.length === 0) continue;
+
+      const totalPages = Math.max(1, Math.ceil(categoryPosts.length / maxPostsPerPage));
+      const encodedCategory = encodeURIComponent(category);
+      const basePathname = `/category/${encodedCategory}`;
+
+      for (let page = 1; page <= totalPages; page++) {
+        const offset = (page - 1) * maxPostsPerPage;
+        const pagePosts = categoryPosts.slice(offset, offset + maxPostsPerPage);
+        if (pagePosts.length === 0) break;
+
+        const html = await pageRenderer.renderPostList(pagePosts, rewriteContext, {
+          archiveGrouping: true,
+          routeKind: 'non-date',
+          archiveContext: { kind: 'category', name: category },
+          basePathname,
+          pagination: { page, maxPostsPerPage, totalPosts: categoryPosts.length },
+          ...pageContext,
+        });
+
+        if (html) {
+          const urlPath = page === 1
+            ? `category/${encodedCategory}`
+            : `category/${encodedCategory}/page/${page}`;
+          await writeHtmlPage(projectId, htmlDir, urlPath, html);
+          count++;
+          onPageGenerated(`Generated /${urlPath}`);
+        }
+      }
+    }
+
+    return count;
+  }
+
+  private async generateTagPages(
+    projectId: string,
+    posts: PostData[],
+    allTags: Set<string>,
+    rewriteContext: HtmlRewriteContext,
+    maxPostsPerPage: number,
+    htmlDir: string,
+    pageContext: { page_title: string; language: string },
+    pageRenderer: PageRenderer,
+    onPageGenerated: (message: string) => void,
+  ): Promise<number> {
+    let count = 0;
+
+    for (const tag of Array.from(allTags).sort()) {
+      const tagPosts = posts.filter((post) => (post.tags || []).includes(tag));
+      if (tagPosts.length === 0) continue;
+
+      const totalPages = Math.max(1, Math.ceil(tagPosts.length / maxPostsPerPage));
+      const encodedTag = encodeURIComponent(tag);
+      const basePathname = `/tag/${encodedTag}`;
+
+      for (let page = 1; page <= totalPages; page++) {
+        const offset = (page - 1) * maxPostsPerPage;
+        const pagePosts = tagPosts.slice(offset, offset + maxPostsPerPage);
+        if (pagePosts.length === 0) break;
+
+        const html = await pageRenderer.renderPostList(pagePosts, rewriteContext, {
+          archiveGrouping: true,
+          routeKind: 'non-date',
+          archiveContext: { kind: 'tag', name: tag },
+          basePathname,
+          pagination: { page, maxPostsPerPage, totalPosts: tagPosts.length },
+          ...pageContext,
+        });
+
+        if (html) {
+          const urlPath = page === 1
+            ? `tag/${encodedTag}`
+            : `tag/${encodedTag}/page/${page}`;
+          await writeHtmlPage(projectId, htmlDir, urlPath, html);
+          count++;
+          onPageGenerated(`Generated /${urlPath}`);
+        }
+      }
+    }
+
+    return count;
+  }
+
+  private async generateDateArchivePages(
+    projectId: string,
+    posts: PostData[],
+    yearsMap: Map<number, Date>,
+    yearMonthsMap: Map<string, Date>,
+    yearMonthDaysMap: Map<string, Date>,
+    rewriteContext: HtmlRewriteContext,
+    maxPostsPerPage: number,
+    htmlDir: string,
+    pageContext: { page_title: string; language: string },
+    pageRenderer: PageRenderer,
+    onPageGenerated: (message: string) => void,
+  ): Promise<number> {
+    let count = 0;
+
+    for (const [year] of Array.from(yearsMap.entries()).sort((a, b) => b[0] - a[0])) {
+      const yearPosts = posts.filter((post) => resolvePostCreatedAt(post).getFullYear() === year);
+      count += await this.generatePaginatedListPages(
+        projectId, yearPosts, rewriteContext, maxPostsPerPage, htmlDir, pageContext, pageRenderer, onPageGenerated,
+        `${year}`, `/${year}`, { kind: 'year', year }, 'date',
+      );
+    }
+
+    for (const [ym] of Array.from(yearMonthsMap.entries()).sort().reverse()) {
+      const [yearStr, monthStr] = ym.split('/');
+      const year = Number(yearStr);
+      const month = Number(monthStr);
+      const monthPosts = posts.filter((post) => {
+        const d = resolvePostCreatedAt(post);
+        return d.getFullYear() === year && (d.getMonth() + 1) === month;
+      });
+      count += await this.generatePaginatedListPages(
+        projectId, monthPosts, rewriteContext, maxPostsPerPage, htmlDir, pageContext, pageRenderer, onPageGenerated,
+        ym, `/${ym}`, { kind: 'month', year, month }, 'date',
+      );
+    }
+
+    for (const [ymd] of Array.from(yearMonthDaysMap.entries()).sort().reverse()) {
+      const [yearStr, monthStr, dayStr] = ymd.split('/');
+      const year = Number(yearStr);
+      const month = Number(monthStr);
+      const day = Number(dayStr);
+      const dayPosts = posts.filter((post) => {
+        const d = resolvePostCreatedAt(post);
+        return d.getFullYear() === year && (d.getMonth() + 1) === month && d.getDate() === day;
+      });
+      count += await this.generatePaginatedListPages(
+        projectId, dayPosts, rewriteContext, maxPostsPerPage, htmlDir, pageContext, pageRenderer, onPageGenerated,
+        ymd, `/${ymd}`, { kind: 'day', year, month, day }, 'date',
+      );
+    }
+
+    return count;
+  }
+
+  private async generatePaginatedListPages(
+    projectId: string,
+    posts: PostData[],
+    rewriteContext: HtmlRewriteContext,
+    maxPostsPerPage: number,
+    htmlDir: string,
+    pageContext: { page_title: string; language: string },
+    pageRenderer: PageRenderer,
+    onPageGenerated: (message: string) => void,
+    urlPrefix: string,
+    basePathname: string,
+    archiveContext: { kind: 'root' | 'year' | 'month' | 'day' | 'tag' | 'category'; name?: string; year?: number; month?: number; day?: number },
+    routeKind: 'date' | 'non-date',
+  ): Promise<number> {
+    if (posts.length === 0) return 0;
+
+    const totalPages = Math.max(1, Math.ceil(posts.length / maxPostsPerPage));
+    let count = 0;
+
+    for (let page = 1; page <= totalPages; page++) {
+      const offset = (page - 1) * maxPostsPerPage;
+      const pagePosts = posts.slice(offset, offset + maxPostsPerPage);
+      if (pagePosts.length === 0) break;
+
+      const html = await pageRenderer.renderPostList(pagePosts, rewriteContext, {
+        archiveGrouping: true,
+        routeKind,
+        archiveContext,
+        basePathname,
+        pagination: { page, maxPostsPerPage, totalPosts: posts.length },
+        ...pageContext,
+      });
+
+      if (html) {
+        const urlPath = page === 1
+          ? urlPrefix
+          : `${urlPrefix}/page/${page}`;
+        await writeHtmlPage(projectId, htmlDir, urlPath, html);
+        count++;
+        onPageGenerated(`Generated /${urlPath}`);
+      }
+    }
+
+    return count;
+  }
+
+  private estimateGenerationUnitsBySection(
+    posts: PostData[],
+    allCategories: Set<string>,
+    allTags: Set<string>,
+    yearsMap: Map<number, Date>,
+    yearMonthsMap: Map<string, Date>,
+    yearMonthDaysMap: Map<string, Date>,
+    maxPostsPerPage: number,
+  ): Record<BlogGenerationSection, number> {
+    const rootPages = this.countPaginatedPages(posts.length, maxPostsPerPage);
+    const pageRoutes = posts.filter((post) => (post.categories || []).includes('page')).length;
+
+    const categoryPages = Array.from(allCategories).reduce((sum, category) => {
+      const count = posts.filter((post) => (post.categories || []).includes(category)).length;
+      return sum + this.countPaginatedPages(count, maxPostsPerPage);
+    }, 0);
+
+    const tagPages = Array.from(allTags).reduce((sum, tag) => {
+      const count = posts.filter((post) => (post.tags || []).includes(tag)).length;
+      return sum + this.countPaginatedPages(count, maxPostsPerPage);
+    }, 0);
+
+    let datePages = 0;
+
+    for (const [year] of yearsMap) {
+      const yearPosts = posts.filter((post) => resolvePostCreatedAt(post).getFullYear() === year);
+      datePages += this.countPaginatedPages(yearPosts.length, maxPostsPerPage);
+    }
+
+    for (const [ym] of yearMonthsMap) {
+      const [yearStr, monthStr] = ym.split('/');
+      const year = Number(yearStr);
+      const month = Number(monthStr);
+      const monthPosts = posts.filter((post) => {
+        const d = resolvePostCreatedAt(post);
+        return d.getFullYear() === year && (d.getMonth() + 1) === month;
+      });
+      datePages += this.countPaginatedPages(monthPosts.length, maxPostsPerPage);
+    }
+
+    for (const [ymd] of yearMonthDaysMap) {
+      const [yearStr, monthStr, dayStr] = ymd.split('/');
+      const year = Number(yearStr);
+      const month = Number(monthStr);
+      const day = Number(dayStr);
+      const dayPosts = posts.filter((post) => {
+        const d = resolvePostCreatedAt(post);
+        return d.getFullYear() === year && (d.getMonth() + 1) === month && d.getDate() === day;
+      });
+      datePages += this.countPaginatedPages(dayPosts.length, maxPostsPerPage);
+    }
+
+    return {
+      core: 4 + rootPages + pageRoutes,
+      single: posts.length,
+      category: categoryPages,
+      tag: tagPages,
+      date: datePages,
+    };
+  }
+
+  private countPaginatedPages(totalPosts: number, maxPostsPerPage: number): number {
+    if (totalPosts <= 0) {
+      return 0;
+    }
+    return Math.max(1, Math.ceil(totalPosts / maxPostsPerPage));
+  }
 }
 
 let blogGenerationEngine: BlogGenerationEngine | null = null;

src/main/engine/PageRenderer.ts

@@ -0,0 +1,812 @@
+import path from 'node:path';
+import { marked } from 'marked';
+import { Liquid } from 'liquidjs';
+import type { MediaData } from './MediaEngine';
+import type { PostData } from './PostEngine';
+
+export interface HtmlRewriteContext {
+  canonicalPostPathBySlug: Map<string, string>;
+  canonicalMediaPathBySourcePath: Map<string, string>;
+}
+
+export interface TemplatePostEntry {
+  id: string;
+  title: string;
+  content: string;
+}
+
+export interface DayBlockContext {
+  date_label: string;
+  show_date_marker: boolean;
+  show_separator: boolean;
+  posts: TemplatePostEntry[];
+}
+
+export interface PaginationContext {
+  page: number;
+  maxPostsPerPage: number;
+  totalPosts: number;
+}
+
+export type ArchiveRouteKind = 'date' | 'non-date';
+
+export type DateArchiveContext = {
+  kind: 'root' | 'year' | 'month' | 'day' | 'tag' | 'category';
+  name?: string;
+  year?: number;
+  month?: number;
+  day?: number;
+};
+
+export interface PostListTemplateContext {
+  page_title: string;
+  language: string;
+  is_date_archive: boolean;
+  show_archive_range_heading: boolean;
+  archive_context: {
+    kind: 'root' | 'year' | 'month' | 'day' | 'tag' | 'category';
+    name: string | null;
+    year: number | null;
+    month: number | null;
+    day: number | null;
+  } | null;
+  min_date: { day: number; month: number; year: number } | null;
+  max_date: { day: number; month: number; year: number } | null;
+  is_list_page: boolean;
+  is_first_page: boolean;
+  is_last_page: boolean;
+  has_prev_page: boolean;
+  has_next_page: boolean;
+  prev_page_href: string;
+  next_page_href: string;
+  canonical_post_path_by_slug: Record<string, string>;
+  canonical_media_path_by_source_path: Record<string, string>;
+  day_blocks: DayBlockContext[];
+}
+
+export interface SinglePostTemplateContext {
+  page_title: string;
+  language: string;
+  post: TemplatePostEntry;
+  canonical_post_path_by_slug: Record<string, string>;
+  canonical_media_path_by_source_path: Record<string, string>;
+}
+
+export interface NotFoundTemplateContext {
+  page_title: string;
+  language: string;
+}
+
+export interface RoutePagination {
+  pathname: string;
+  page: number;
+}
+
+export interface MediaEngineContract {
+  getAllMedia: () => Promise<MediaData[]>;
+  setProjectContext?: (projectId: string, dataDir?: string, internalDir?: string) => void;
+}
+
+export interface PostMediaEngineContract {
+  getLinkedMediaDataForPost: (postId: string) => Promise<Array<{ media: MediaData }>>;
+  setProjectContext: (projectId: string) => void;
+}
+
+export interface PostEngineContract {
+  getPost: (id: string) => Promise<PostData | null>;
+}
+
+export const PREVIEW_ASSETS = {
+  'pico.min.css': {
+    modulePath: '@picocss/pico/css/pico.min.css',
+    contentType: 'text/css; charset=utf-8',
+  },
+  'lightbox.min.css': {
+    modulePath: 'lightbox2/dist/css/lightbox.min.css',
+    contentType: 'text/css; charset=utf-8',
+  },
+  'lightbox.min.js': {
+    modulePath: 'lightbox2/dist/js/lightbox-plus-jquery.min.js',
+    contentType: 'application/javascript; charset=utf-8',
+  },
+} as const;
+
+export const PREVIEW_IMAGE_ASSETS = {
+  'prev.png': {
+    modulePath: 'lightbox2/dist/images/prev.png',
+    contentType: 'image/png',
+  },
+  'next.png': {
+    modulePath: 'lightbox2/dist/images/next.png',
+    contentType: 'image/png',
+  },
+  'close.png': {
+    modulePath: 'lightbox2/dist/images/close.png',
+    contentType: 'image/png',
+  },
+  'loading.gif': {
+    modulePath: 'lightbox2/dist/images/loading.gif',
+    contentType: 'image/gif',
+  },
+} as const;
+
+const DEFAULT_MAX_POSTS_PER_PAGE = 50;
+const MIN_MAX_POSTS_PER_PAGE = 1;
+const MAX_MAX_POSTS_PER_PAGE = 500;
+
+export function clampMaxPostsPerPage(value: unknown): number {
+  if (typeof value !== 'number' || !Number.isFinite(value)) {
+    return DEFAULT_MAX_POSTS_PER_PAGE;
+  }
+
+  const normalized = Math.floor(value);
+  if (normalized < MIN_MAX_POSTS_PER_PAGE) return DEFAULT_MAX_POSTS_PER_PAGE;
+  if (normalized > MAX_MAX_POSTS_PER_PAGE) return MAX_MAX_POSTS_PER_PAGE;
+  return normalized;
+}
+
+export function resolvePageTitle(metadata: { description?: string; name?: string } | null, fallbackProjectName?: string, fallbackProjectDescription?: string): string {
+  const candidate = metadata?.description?.trim();
+  if (candidate) {
+    return candidate;
+  }
+
+  const metadataName = metadata?.name?.trim();
+  if (metadataName) {
+    return metadataName;
+  }
+
+  const descriptionFallback = fallbackProjectDescription?.trim();
+  if (descriptionFallback) {
+    return descriptionFallback;
+  }
+
+  const fallback = fallbackProjectName?.trim();
+  if (fallback) {
+    return fallback;
+  }
+
+  return 'Blog Preview';
+}
+
+export function escapeHtml(value: string): string {
+  return value
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&#39;');
+}
+
+export function parseMacroParams(paramString: string | undefined): Record<string, string> {
+  if (!paramString) return {};
+
+  const params: Record<string, string> = {};
+  const regex = /(\w+)=(?:["']([^"']*?)["']|([^\s\]]+))/g;
+  let match: RegExpExecArray | null = null;
+
+  while ((match = regex.exec(paramString)) !== null) {
+    params[match[1]] = match[2] !== undefined ? match[2] : match[3];
+  }
+
+  return params;
+}
+
+export function parseIntegerParam(value: string | undefined): number | null {
+  if (!value) return null;
+  const parsed = Number.parseInt(value, 10);
+  return Number.isInteger(parsed) ? parsed : null;
+}
+
+export function normalizeMacroName(name: string): string {
+  if (name === 'photo_album') {
+    return 'photo_archive';
+  }
+
+  return name;
+}
+
+export function buildCanonicalMediaPath(media: MediaData): string {
+  const year = media.createdAt.getFullYear();
+  const month = String(media.createdAt.getMonth() + 1).padStart(2, '0');
+  return `/media/${year}/${month}/${media.filename}`;
+}
+
+export function isRenderableImage(media: MediaData): boolean {
+  if (media.mimeType?.toLowerCase().startsWith('image/')) {
+    return true;
+  }
+
+  const extension = path.extname(media.filename).toLowerCase();
+  return ['.jpg', '.jpeg', '.png', '.gif', '.webp', '.svg', '.bmp', '.avif'].includes(extension);
+}
+
+export function buildPhotoArchiveBuckets(
+  mediaItems: MediaData[],
+  params: Record<string, string>,
+): Array<{ year: number; month: number; media: MediaData[] }> {
+  const yearParam = parseIntegerParam(params.year);
+  const monthParam = parseIntegerParam(params.month);
+
+  const filteredByDate = mediaItems.filter((media) => {
+    const year = media.createdAt.getFullYear();
+    const month = media.createdAt.getMonth() + 1;
+
+    if (yearParam !== null && year !== yearParam) {
+      return false;
+    }
+
+    if (monthParam !== null && month !== monthParam) {
+      return false;
+    }
+
+    return true;
+  });
+
+  const buckets = new Map<string, { year: number; month: number; media: MediaData[] }>();
+  for (const media of filteredByDate) {
+    const year = media.createdAt.getFullYear();
+    const month = media.createdAt.getMonth() + 1;
+    const key = `${year}-${String(month).padStart(2, '0')}`;
+    const existing = buckets.get(key);
+
+    if (existing) {
+      existing.media.push(media);
+      continue;
+    }
+
+    buckets.set(key, { year, month, media: [media] });
+  }
+
+  let orderedBuckets = Array.from(buckets.values())
+    .sort((a, b) => (b.year * 12 + b.month) - (a.year * 12 + a.month));
+
+  if (yearParam === null) {
+    orderedBuckets = orderedBuckets.slice(0, 10);
+  }
+
+  for (const bucket of orderedBuckets) {
+    bucket.media.sort((a, b) => b.createdAt.getTime() - a.createdAt.getTime());
+  }
+
+  return orderedBuckets;
+}
+
+export function renderGalleryMacro(
+  params: Record<string, string>,
+  postId: string,
+  mediaItems: MediaData[],
+  linkedMediaIds: Set<string> | null,
+): string {
+  const requestedColumns = parseIntegerParam(params.columns);
+  const columns = requestedColumns && requestedColumns >= 1 && requestedColumns <= 6 ? requestedColumns : 3;
+  const caption = params.caption ? `<figcaption class="gallery-caption">${escapeHtml(params.caption)}</figcaption>` : '';
+
+  const linkedImages = mediaItems
+    .filter((media) => {
+      if (!isRenderableImage(media)) {
+        return false;
+      }
+
+      const linkedByPostMedia = linkedMediaIds?.has(media.id) ?? false;
+      const linkedBySidecar = Array.isArray(media.linkedPostIds) && media.linkedPostIds.includes(postId);
+      return linkedByPostMedia || linkedBySidecar;
+    })
+    .sort((a, b) => b.createdAt.getTime() - a.createdAt.getTime());
+
+  const groupName = `gallery-${escapeHtml(postId || 'post')}`;
+  const galleryItems = linkedImages.map((media) => {
+    const mediaPath = escapeHtml(buildCanonicalMediaPath(media));
+    const title = escapeHtml(media.caption || media.title || media.originalName || media.filename);
+    const alt = escapeHtml(media.alt || media.title || media.originalName || media.filename);
+    return `<a class="gallery-item" href="${mediaPath}" data-lightbox="${groupName}" data-title="${title}"><img src="${mediaPath}" alt="${alt}" loading="lazy" /></a>`;
+  }).join('');
+
+  const content = galleryItems || '<div class="gallery-empty">No linked images found.</div>';
+  return `<div class="macro-gallery gallery-cols-${columns}" data-post-id="${escapeHtml(postId)}" data-columns="${columns}" data-lightbox="true"><div class="gallery-container gallery-lightbox">${content}</div>${caption}</div>`;
+}
+
+export function renderPhotoArchiveMacro(params: Record<string, string>, mediaItems: MediaData[]): string {
+  const monthNames = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
+  const yearParam = parseIntegerParam(params.year);
+  const monthParam = parseIntegerParam(params.month);
+
+  const rootClasses = ['macro-photo-archive'];
+  if (yearParam === null) {
+    rootClasses.push('photo-archive-recent-months');
+  } else if (monthParam !== null) {
+    rootClasses.push('photo-archive-single-month');
+  } else {
+    rootClasses.push('photo-archive-full-year');
+  }
+
+  const dataAttrs: string[] = [];
+  if (yearParam === null) {
+    dataAttrs.push('data-recent="10"');
+  } else {
+    dataAttrs.push(`data-year="${escapeHtml(String(yearParam))}"`);
+    if (monthParam !== null) {
+      dataAttrs.push(`data-month="${escapeHtml(String(monthParam))}"`);
+    }
+  }
+
+  const renderableMedia = mediaItems.filter((media) => isRenderableImage(media));
+  const buckets = buildPhotoArchiveBuckets(renderableMedia, params);
+
+  if (buckets.length === 0) {
+    return `<div class="${rootClasses.join(' ')}" ${dataAttrs.join(' ')}><div class="photo-archive-container"><div class="photo-archive-empty">No photos found for this archive.</div></div></div>`;
+  }
+
+  const monthsHtml = buckets.map((bucket) => {
+    const monthName = monthNames[bucket.month - 1] || String(bucket.month);
+    const label = `${monthName} ${bucket.year}`;
+    const groupName = `photo-archive-${bucket.year}-${String(bucket.month).padStart(2, '0')}`;
+
+    const itemsHtml = bucket.media.map((media) => {
+      const mediaPath = escapeHtml(buildCanonicalMediaPath(media));
+      const title = escapeHtml(media.caption || media.title || media.originalName || media.filename);
+      const alt = escapeHtml(media.alt || media.title || media.originalName || media.filename);
+      return `<a class="photo-archive-item" href="${mediaPath}" data-lightbox="${groupName}" data-title="${title}"><img src="${mediaPath}" alt="${alt}" loading="lazy" /></a>`;
+    }).join('');
+
+    return `<div class="photo-archive-month-wrapper"><div class="photo-archive-month"><div class="photo-archive-month-label"><span>${escapeHtml(label)}</span></div><div class="photo-archive-gallery">${itemsHtml}</div></div></div>`;
+  }).join('');
+
+  return `<div class="${rootClasses.join(' ')}" ${dataAttrs.join(' ')}><div class="photo-archive-container">${monthsHtml}</div></div>`;
+}
+
+export function isExternalOrSpecialUrl(value: string): boolean {
+  const normalized = value.trim();
+  if (!normalized) return false;
+  if (normalized.startsWith('#') || normalized.startsWith('//')) return true;
+  return /^[a-z][a-z0-9+.-]*:/i.test(normalized);
+}
+
+export function splitPathSuffix(value: string): { pathPart: string; suffix: string } {
+  const match = value.match(/^([^?#]*)([?#].*)?$/);
+  return {
+    pathPart: match?.[1] ?? value,
+    suffix: match?.[2] ?? '',
+  };
+}
+
+export function normalizePreviewHref(rawHref: string, rewriteContext: HtmlRewriteContext): string {
+  if (!rawHref || isExternalOrSpecialUrl(rawHref)) {
+    return rawHref;
+  }
+
+  const { pathPart, suffix } = splitPathSuffix(rawHref.trim());
+
+  const canonicalDayRouteMatch = pathPart.match(/^\/(\d{4})\/(\d{1,2})\/(\d{1,2})\/([a-z0-9-]+)(?:\.html?)?$/i);
+  if (canonicalDayRouteMatch) {
+    const [, year, month, day, slug] = canonicalDayRouteMatch;
+    const normalizedMonth = String(Number(month)).padStart(2, '0');
+    const normalizedDay = String(Number(day)).padStart(2, '0');
+    return `/${year}/${normalizedMonth}/${normalizedDay}/${slug}${suffix}`;
+  }
+
+  const postBySlugMatch = pathPart.match(/^\/?post\/([a-z0-9-]+(?:\.html?)?)$/i);
+  if (postBySlugMatch) {
+    const slug = postBySlugMatch[1].replace(/\.html?$/i, '');
+    const canonical = rewriteContext.canonicalPostPathBySlug.get(slug);
+    return `${canonical ?? `/posts/${slug}`}${suffix}`;
+  }
+
+  const postByYearMonthSlugMatch = pathPart.match(/^\/?post\/(\d{4})\/(\d{1,2})\/([a-z0-9-]+(?:\.html?)?)$/i);
+  if (postByYearMonthSlugMatch) {
+    const [, , , rawSlug] = postByYearMonthSlugMatch;
+    const slug = rawSlug.replace(/\.html?$/i, '');
+    const canonical = rewriteContext.canonicalPostPathBySlug.get(slug);
+    return `${canonical ?? `/posts/${slug}`}${suffix}`;
+  }
+
+  const postsBySlugMatch = pathPart.match(/^\/?posts\/([a-z0-9-]+(?:\.html?)?)$/i);
+  if (postsBySlugMatch) {
+    const slug = postsBySlugMatch[1].replace(/\.html?$/i, '');
+    const canonical = rewriteContext.canonicalPostPathBySlug.get(slug);
+    return `${canonical ?? `/posts/${slug}`}${suffix}`;
+  }
+
+  const postsByYearMonthSlugMatch = pathPart.match(/^\/?posts\/(\d{4})\/(\d{1,2})\/([a-z0-9-]+(?:\.html?)?)$/i);
+  if (postsByYearMonthSlugMatch) {
+    const [, , , rawSlug] = postsByYearMonthSlugMatch;
+    const slug = rawSlug.replace(/\.html?$/i, '');
+    const canonical = rewriteContext.canonicalPostPathBySlug.get(slug);
+    return `${canonical ?? `/posts/${slug}`}${suffix}`;
+  }
+
+  return rawHref;
+}
+
+export function normalizePreviewSrc(rawSrc: string, rewriteContext: HtmlRewriteContext): string {
+  if (!rawSrc || isExternalOrSpecialUrl(rawSrc)) {
+    return rawSrc;
+  }
+
+  const { pathPart, suffix } = splitPathSuffix(rawSrc.trim());
+  const mediaMatch = pathPart.match(/^\/?media\/(\d{4})\/(\d{2})\/([^\s]+)$/i);
+  if (!mediaMatch) {
+    return rawSrc;
+  }
+
+  const [, year, month, filename] = mediaMatch;
+  const sourceKey = `media/${year}/${month}/${filename}`.toLowerCase();
+  const canonicalPath = rewriteContext.canonicalMediaPathBySourcePath.get(sourceKey);
+  if (canonicalPath) {
+    return `${canonicalPath}${suffix}`;
+  }
+
+  return `/media/${year}/${month}/${filename}${suffix}`;
+}
+
+export function rewriteRenderedHtmlUrls(html: string, rewriteContext: HtmlRewriteContext): string {
+  return html
+    .replace(/\bhref=(['"])(.*?)\1/gi, (_fullMatch, quote: string, href: string) => {
+      const rewritten = normalizePreviewHref(href, rewriteContext);
+      return `href=${quote}${rewritten}${quote}`;
+    })
+    .replace(/\bsrc=(['"])(.*?)\1/gi, (_fullMatch, quote: string, src: string) => {
+      const rewritten = normalizePreviewSrc(src, rewriteContext);
+      return `src=${quote}${rewritten}${quote}`;
+    });
+}
+
+export function renderMacro(
+  name: string,
+  params: Record<string, string>,
+  postId: string,
+  mediaItems: MediaData[],
+  linkedMediaIds: Set<string> | null,
+): string {
+  const normalizedName = normalizeMacroName(name);
+
+  if (normalizedName === 'youtube') {
+    const id = escapeHtml(params.id || '');
+    const title = escapeHtml(params.title || 'YouTube video');
+    if (!id) return '';
+    return `<div class="macro-youtube"><iframe src="https://www.youtube.com/embed/${id}?rel=0" title="${title}" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></div>`;
+  }
+
+  if (normalizedName === 'vimeo') {
+    const id = escapeHtml(params.id || '');
+    const title = escapeHtml(params.title || 'Vimeo video');
+    if (!id) return '';
+    return `<div class="macro-vimeo"><iframe src="https://player.vimeo.com/video/${id}" title="${title}" frameborder="0" allow="autoplay; fullscreen; picture-in-picture" allowfullscreen></iframe></div>`;
+  }
+
+  if (normalizedName === 'gallery') {
+    return renderGalleryMacro(params, postId, mediaItems, linkedMediaIds);
+  }
+
+  if (normalizedName === 'photo_archive') {
+    return renderPhotoArchiveMacro(params, mediaItems);
+  }
+
+  return '';
+}
+
+export function buildCanonicalPostPath(post: PostData): string {
+  const year = post.createdAt.getFullYear();
+  const month = String(post.createdAt.getMonth() + 1).padStart(2, '0');
+  const day = String(post.createdAt.getDate()).padStart(2, '0');
+  return `/${year}/${month}/${day}/${post.slug}`;
+}
+
+export function formatArchiveDate(date: Date): string {
+  const day = String(date.getDate()).padStart(2, '0');
+  const month = String(date.getMonth() + 1).padStart(2, '0');
+  const year = String(date.getFullYear());
+  return `${day}.${month}.${year}`;
+}
+
+export function getArchiveDateKey(date: Date): string {
+  const year = String(date.getFullYear());
+  const month = String(date.getMonth() + 1).padStart(2, '0');
+  const day = String(date.getDate()).padStart(2, '0');
+  return `${year}-${month}-${day}`;
+}
+
+export function toDateParts(date: Date): { day: number; month: number; year: number } {
+  return {
+    day: date.getDate(),
+    month: date.getMonth() + 1,
+    year: date.getFullYear(),
+  };
+}
+
+export function buildPaginationHref(basePathname: string, page: number): string {
+  const base = basePathname === '/' ? '' : basePathname;
+  if (page <= 1) {
+    return basePathname === '/' ? '/' : `${basePathname}/`;
+  }
+
+  return `${base}/page/${page}/`;
+}
+
+export function parseRoutePagination(pathname: string): RoutePagination | null {
+  const pageMatch = pathname.match(/^(.*)\/page\/(\d+)$/);
+  if (!pageMatch) {
+    return { pathname, page: 1 };
+  }
+
+  const page = Number(pageMatch[2]);
+  if (!Number.isInteger(page) || page < 1) {
+    return null;
+  }
+
+  const basePathname = pageMatch[1] || '/';
+  return {
+    pathname: basePathname,
+    page,
+  };
+}
+
+export function mapToRecord(map: Map<string, string>): Record<string, string> {
+  return Object.fromEntries(map.entries());
+}
+
+export function recordToMap(record: unknown): Map<string, string> {
+  if (!record || typeof record !== 'object') {
+    return new Map<string, string>();
+  }
+
+  return new Map<string, string>(
+    Object.entries(record as Record<string, unknown>)
+      .filter((entry): entry is [string, string] => typeof entry[1] === 'string'),
+  );
+}
+
+export class PageRenderer {
+  private readonly mediaEngine: MediaEngineContract;
+  private readonly postMediaEngine: PostMediaEngineContract;
+  private readonly liquid: Liquid;
+
+  constructor(mediaEngine: MediaEngineContract, postMediaEngine: PostMediaEngineContract) {
+    this.mediaEngine = mediaEngine;
+    this.postMediaEngine = postMediaEngine;
+
+    const templateRoots = [
+      path.resolve(__dirname, 'templates'),
+      path.resolve(process.cwd(), 'dist', 'main', 'engine', 'templates'),
+      path.resolve(process.cwd(), 'src', 'main', 'engine', 'templates'),
+    ];
+
+    this.liquid = new Liquid({
+      root: templateRoots,
+      extname: '.liquid',
+      cache: true,
+    });
+
+    this.liquid.registerFilter('markdown', async (value: unknown, postIdArg: unknown, canonicalPostsArg: unknown, canonicalMediaArg: unknown) => {
+      const content = typeof value === 'string' ? value : '';
+      const postId = typeof postIdArg === 'string' ? postIdArg : '';
+      const rewriteContext: HtmlRewriteContext = {
+        canonicalPostPathBySlug: recordToMap(canonicalPostsArg),
+        canonicalMediaPathBySourcePath: recordToMap(canonicalMediaArg),
+      };
+
+      const needsMediaLookup = /\[\[(gallery|photo_archive|photo_album)\b/i.test(content);
+      const mediaItems = needsMediaLookup
+        ? await this.mediaEngine.getAllMedia().catch(() => [] as MediaData[])
+        : [];
+
+      const linkedMediaIds = needsMediaLookup && postId
+        ? await this.postMediaEngine.getLinkedMediaDataForPost(postId)
+          .then((links) => new Set<string>(links.map((link) => link.media?.id).filter((id): id is string => typeof id === 'string' && id.length > 0)))
+          .catch(() => null)
+        : null;
+
+      const withMacros = content.replace(/\[\[(\w+)(?:\s+([^\]]+))?\]\]/g, (_match, macroName: string, rawParams: string | undefined) => {
+        const params = parseMacroParams(rawParams);
+        return renderMacro(macroName.toLowerCase(), params, postId, mediaItems, linkedMediaIds);
+      });
+
+      const markdownHtml = await marked.parse(withMacros, { async: true, gfm: true, breaks: false });
+      return rewriteRenderedHtmlUrls(markdownHtml, rewriteContext);
+    });
+  }
+
+  buildListTemplateContext(
+    posts: PostData[],
+    rewriteContext: HtmlRewriteContext,
+    options: {
+      archiveGrouping: boolean;
+      routeKind: ArchiveRouteKind;
+      archiveContext?: DateArchiveContext;
+      basePathname: string;
+      page_title: string;
+      language: string;
+      pagination?: PaginationContext;
+    },
+  ): PostListTemplateContext {
+    const dayBlocks: DayBlockContext[] = [];
+
+    if (!options.archiveGrouping) {
+      dayBlocks.push({
+        date_label: '',
+        show_date_marker: false,
+        show_separator: false,
+        posts: posts.map((post) => ({
+          id: post.id,
+          title: post.title,
+          content: post.content,
+        })),
+      });
+    } else {
+      let currentBlock: { key: string; block: DayBlockContext } | null = null;
+
+      for (const post of posts) {
+        const key = getArchiveDateKey(post.createdAt);
+        if (!currentBlock || currentBlock.key !== key) {
+          currentBlock = {
+            key,
+            block: {
+              date_label: formatArchiveDate(post.createdAt),
+              show_date_marker: true,
+              show_separator: false,
+              posts: [],
+            },
+          };
+          dayBlocks.push(currentBlock.block);
+        }
+
+        currentBlock.block.posts.push({
+          id: post.id,
+          title: post.title,
+          content: post.content,
+        });
+      }
+
+      for (let index = 0; index < dayBlocks.length - 1; index += 1) {
+        dayBlocks[index].show_separator = true;
+      }
+    }
+
+    const pagination = options.pagination;
+    const isListPage = Boolean(pagination && pagination.totalPosts > pagination.maxPostsPerPage);
+    const isFirstPage = pagination ? pagination.page <= 1 : true;
+    const isLastPage = pagination
+      ? (pagination.page * pagination.maxPostsPerPage) >= pagination.totalPosts
+      : true;
+    const hasPrevPage = Boolean(pagination && pagination.page > 1);
+    const hasNextPage = Boolean(pagination && (pagination.page * pagination.maxPostsPerPage) < pagination.totalPosts);
+    const prevPageHref = hasPrevPage
+      ? buildPaginationHref(options.basePathname, (pagination as PaginationContext).page - 1)
+      : '';
+    const nextPageHref = hasNextPage
+      ? buildPaginationHref(options.basePathname, (pagination as PaginationContext).page + 1)
+      : '';
+
+    let minDateParts: { day: number; month: number; year: number } | null = null;
+    let maxDateParts: { day: number; month: number; year: number } | null = null;
+
+    const hasRangeHeading = Boolean(
+      !isFirstPage
+      && posts.length > 0
+      && (
+        options.routeKind === 'date'
+        || options.archiveContext?.kind === 'tag'
+        || options.archiveContext?.kind === 'category'
+      ),
+    );
+
+    if (hasRangeHeading) {
+      let minDate = posts[0].createdAt;
+      let maxDate = posts[0].createdAt;
+
+      for (const post of posts) {
+        if (post.createdAt.getTime() < minDate.getTime()) {
+          minDate = post.createdAt;
+        }
+        if (post.createdAt.getTime() > maxDate.getTime()) {
+          maxDate = post.createdAt;
+        }
+      }
+
+      minDateParts = toDateParts(minDate);
+      maxDateParts = toDateParts(maxDate);
+    }
+
+    return {
+      page_title: options.page_title,
+      language: options.language,
+      is_date_archive: options.routeKind === 'date',
+      show_archive_range_heading: hasRangeHeading,
+      archive_context: options.routeKind === 'date'
+        ? {
+            kind: options.archiveContext?.kind ?? 'root',
+            name: options.archiveContext?.name ?? null,
+            year: options.archiveContext?.year ?? null,
+            month: options.archiveContext?.month ?? null,
+            day: options.archiveContext?.day ?? null,
+          }
+        : options.archiveContext
+          ? {
+              kind: options.archiveContext.kind,
+              name: options.archiveContext.name ?? null,
+              year: options.archiveContext.year ?? null,
+              month: options.archiveContext.month ?? null,
+              day: options.archiveContext.day ?? null,
+            }
+          : null,
+      min_date: minDateParts,
+      max_date: maxDateParts,
+      is_list_page: isListPage,
+      is_first_page: isFirstPage,
+      is_last_page: isLastPage,
+      has_prev_page: hasPrevPage,
+      has_next_page: hasNextPage,
+      prev_page_href: prevPageHref,
+      next_page_href: nextPageHref,
+      canonical_post_path_by_slug: mapToRecord(rewriteContext.canonicalPostPathBySlug),
+      canonical_media_path_by_source_path: mapToRecord(rewriteContext.canonicalMediaPathBySourcePath),
+      day_blocks: dayBlocks,
+    };
+  }
+
+  async resolveRenderablePost(post: PostData, postEngine: PostEngineContract): Promise<PostData> {
+    if (post.status === 'published' && !post.content) {
+      const fullPost = await postEngine.getPost(post.id);
+      return fullPost ?? post;
+    }
+
+    return post;
+  }
+
+  async renderPostList(
+    posts: PostData[],
+    rewriteContext: HtmlRewriteContext,
+    options: {
+      archiveGrouping: boolean;
+      routeKind: ArchiveRouteKind;
+      archiveContext?: DateArchiveContext;
+      basePathname: string;
+      page_title: string;
+      language: string;
+      pagination?: PaginationContext;
+    },
+    postEngine?: PostEngineContract,
+  ): Promise<string> {
+    if (posts.length === 0) {
+      return '';
+    }
+
+    const renderablePosts = postEngine
+      ? await Promise.all(posts.map(async (post) => this.resolveRenderablePost(post, postEngine)))
+      : posts;
+    const templateContext = this.buildListTemplateContext(
+      renderablePosts,
+      rewriteContext,
+      options,
+    );
+
+    return this.liquid.renderFile('post-list', templateContext);
+  }
+
+  async renderSinglePost(
+    post: PostData,
+    rewriteContext: HtmlRewriteContext,
+    pageContext: { page_title: string; language: string },
+    postEngine?: PostEngineContract,
+  ): Promise<string> {
+    const renderablePost = postEngine
+      ? await this.resolveRenderablePost(post, postEngine)
+      : post;
+    const context: SinglePostTemplateContext = {
+      ...pageContext,
+      post: {
+        id: renderablePost.id,
+        title: renderablePost.title,
+        content: renderablePost.content,
+      },
+      canonical_post_path_by_slug: mapToRecord(rewriteContext.canonicalPostPathBySlug),
+      canonical_media_path_by_source_path: mapToRecord(rewriteContext.canonicalMediaPathBySourcePath),
+    };
+
+    return this.liquid.renderFile('single-post', context);
+  }
+
+  async renderNotFound(context: NotFoundTemplateContext): Promise<string> {
+    return this.liquid.renderFile('not-found', context);
+  }
+}

src/main/engine/TaskManager.ts

@@ -4,12 +4,15 @@ export type TaskStatus = 'pending' | 'running' | 'completed' | 'failed' | 'cance
 
 export interface TaskProgress {
   taskId: string;
+  name: string;
   status: TaskStatus;
   progress: number; // 0-100
   message: string;
   startTime: Date;
   endTime?: Date;
   error?: string;
+  groupId?: string;
+  groupName?: string;
 }
 
 export interface Task<T = unknown> {
@@ -17,6 +20,8 @@ export interface Task<T = unknown> {
   name: string;
   execute: (onProgress: (progress: number, message: string) => void) => Promise<T>;
   cancel?: () => void;
+  groupId?: string;
+  groupName?: string;
 }
 
 export class TaskManager extends EventEmitter {
@@ -44,10 +49,13 @@ export class TaskManager extends EventEmitter {
   async runTask<T>(task: Task<T>): Promise<T> {
     const progress: TaskProgress = {
       taskId: task.id,
+      name: task.name,
       status: 'pending',
       progress: 0,
       message: 'Waiting to start...',
       startTime: new Date(),
+      groupId: task.groupId,
+      groupName: task.groupName,
     };
 
     this.tasks.set(task.id, progress);

src/main/ipc/blogHandlers.ts

@@ -2,8 +2,16 @@ import { dialog } from 'electron';
 import { getPostEngine } from '../engine/PostEngine';
 import { getProjectEngine } from '../engine/ProjectEngine';
 import { getMetaEngine } from '../engine/MetaEngine';
+import { getMediaEngine } from '../engine/MediaEngine';
+import { getPostMediaEngine } from '../engine/PostMediaEngine';
 import { taskManager } from '../engine/TaskManager';
-import { getBlogGenerationEngine, resolvePublicBaseUrl } from '../engine/BlogGenerationEngine';
+import {
+  getBlogGenerationEngine,
+  resolvePublicBaseUrl,
+  type BlogGenerationResult,
+  type BlogGenerationSection,
+} from '../engine/BlogGenerationEngine';
+import { resolvePageTitle } from '../engine/PageRenderer';
 
 type SafeHandle = (channel: string, handler: (...args: any[]) => Promise<any>) => void;
 
@@ -12,6 +20,8 @@ export function registerBlogHandlers(safeHandle: SafeHandle): void {
     const projectEngine = getProjectEngine();
     const postEngine = getPostEngine();
     const metaEngine = getMetaEngine();
+    const mediaEngine = getMediaEngine();
+    const postMediaEngine = getPostMediaEngine();
     const blogGenerationEngine = getBlogGenerationEngine();
 
     const project = await projectEngine.getActiveProject();
@@ -22,6 +32,8 @@ export function registerBlogHandlers(safeHandle: SafeHandle): void {
     const dataDir = projectEngine.getDataDir(project.id, project.dataPath);
     postEngine.setProjectContext(project.id, dataDir);
     metaEngine.setProjectContext(project.id, dataDir);
+    mediaEngine.setProjectContext(project.id, dataDir, dataDir);
+    postMediaEngine.setProjectContext(project.id);
 
     if (!metaEngine.isInitialized()) {
       await metaEngine.syncOnStartup();
@@ -33,27 +45,90 @@ export function registerBlogHandlers(safeHandle: SafeHandle): void {
       await dialog.showMessageBox({
         type: 'warning',
         title: 'Public URL Required',
-        message: 'Sitemap generation requires a public URL.',
-        detail: 'Set Project → Public URL in Settings before generating a sitemap.',
+        message: 'Site rendering requires a public URL.',
+        detail: 'Set Project → Public URL in Settings before rendering the site.',
       });
       throw new Error('Project public URL is not configured');
     }
 
-    const taskId = `sitemap-generate-${Date.now()}`;
-
-    return taskManager.runTask({
-      id: taskId,
-      name: 'Generate Sitemap',
-      execute: async (onProgress) => {
-        return blogGenerationEngine.generate({
+    const taskTimestamp = Date.now();
+    const taskGroupId = `site-render-${taskTimestamp}`;
+    const taskGroupName = 'Render Site';
+    const language = metadata?.mainLanguage?.trim() || 'en';
+    const pageTitle = resolvePageTitle(metadata, project.name, project.description ?? undefined);
+    const baseOptions = {
       projectId: project.id,
       projectName: metadata?.name?.trim() || project.name,
       projectDescription: metadata?.description,
       dataDir,
       baseUrl,
       maxPostsPerPage: metadata?.maxPostsPerPage,
+      language,
+      pageTitle,
+    };
+
+    const runSectionTask = async (
+      section: BlogGenerationSection,
+      taskName: string,
+      taskIdPrefix: string,
+    ): Promise<BlogGenerationResult> => {
+      return taskManager.runTask({
+        id: `${taskIdPrefix}-${taskTimestamp}`,
+        name: taskName,
+        groupId: taskGroupId,
+        groupName: taskGroupName,
+        execute: async (onProgress) => {
+          return blogGenerationEngine.generate({
+            ...baseOptions,
+            sections: [section],
           }, (progress, message) => onProgress(progress, message || ''));
         },
       });
+    };
+
+    const mergeResults = (results: BlogGenerationResult[]): BlogGenerationResult => {
+      const first = results[0];
+      return {
+        path: first.path,
+        urlCount: Math.max(...results.map((result) => result.urlCount)),
+        postCount: Math.max(...results.map((result) => result.postCount)),
+        feedPostCount: Math.max(...results.map((result) => result.feedPostCount)),
+        tagCount: Math.max(...results.map((result) => result.tagCount)),
+        categoryCount: Math.max(...results.map((result) => result.categoryCount)),
+        archiveCount: Math.max(...results.map((result) => result.archiveCount)),
+        pagesGenerated: results.reduce((sum, result) => sum + result.pagesGenerated, 0),
+        feeds: {
+          rssPath: first.feeds.rssPath,
+          atomPath: first.feeds.atomPath,
+        },
+        changed: {
+          sitemap: results.some((result) => result.changed.sitemap),
+          rss: results.some((result) => result.changed.rss),
+          atom: results.some((result) => result.changed.atom),
+        },
+      };
+    };
+
+    const coreResult = await taskManager.runTask({
+      id: `site-render-core-${taskTimestamp}`,
+      name: 'Render Site Core',
+      groupId: taskGroupId,
+      groupName: taskGroupName,
+      execute: async (onProgress) => {
+        return blogGenerationEngine.generate({
+          ...baseOptions,
+          sections: ['core'],
+        }, (progress, message) => onProgress(progress, message || ''));
+      },
+    });
+
+    const [singleResult, categoryResult, tagResult, dateResult] = await Promise.all([
+      runSectionTask('single', 'Render Single Posts', 'site-render-single'),
+      runSectionTask('category', 'Render Category Archives', 'site-render-category'),
+      runSectionTask('tag', 'Render Tag Archives', 'site-render-tag'),
+      runSectionTask('date', 'Render Date Archives', 'site-render-date'),
+    ]);
+
+    return mergeResults([coreResult, singleResult, categoryResult, tagResult, dateResult]);
   });
 }

src/main/shared/electronApi.ts

@@ -122,12 +122,15 @@ export interface MediaSearchResult {
 
 export interface TaskProgress {
   taskId: string;
+  name: string;
   status: 'pending' | 'running' | 'completed' | 'failed' | 'cancelled';
   progress: number;
   message: string;
   startTime: string;
   endTime?: string;
   error?: string;
+  groupId?: string;
+  groupName?: string;
 }
 
 export interface SyncConfig {
@@ -598,6 +601,7 @@ export interface ElectronAPI {
       tagCount: number;
       categoryCount: number;
       archiveCount: number;
+      pagesGenerated: number;
     }>;
   };
   chat: {

src/renderer/App.tsx

@@ -134,6 +134,13 @@ const App: React.FC = () => {
     );
 
     // Task events
+    unsubscribers.push(
+      window.electronAPI?.on('task:created', (task: unknown) => {
+        const t = task as TaskProgress;
+        updateTask(t.taskId, t);
+      }) || (() => {})
+    );
+
     unsubscribers.push(
       window.electronAPI?.on('task:started', (task: unknown) => {
         const t = task as TaskProgress;

src/renderer/components/Panel/Panel.css

@@ -86,6 +86,35 @@
   gap: 4px;
 }
 
+.task-group-row {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.task-group-toggle {
+  width: 100%;
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  border: none;
+  background-color: var(--vscode-list-hoverBackground);
+  color: var(--vscode-editor-foreground);
+  border-radius: 4px;
+  padding: 6px 8px;
+  cursor: pointer;
+  text-align: left;
+}
+
+.task-group-chevron {
+  color: var(--vscode-descriptionForeground);
+}
+
+.task-group-title {
+  font-size: 12px;
+  font-weight: 600;
+}
+
 .task-item {
   display: flex;
   align-items: center;
@@ -131,20 +160,49 @@
   min-width: 0;
 }
 
-.task-message {
+.task-child-row {
+  margin-left: 16px;
+}
+
+.task-name {
+  font-size: 12px;
+  color: var(--vscode-editor-foreground);
+  font-weight: 600;
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
 }
 
+.task-message {
+  font-size: 11px;
+  color: var(--vscode-descriptionForeground);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.task-progress-row {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  margin-top: 4px;
+}
+
 .task-progress-bar {
+  flex: 1;
   height: 3px;
   background-color: var(--vscode-input-background);
   border-radius: 2px;
-  margin-top: 4px;
   overflow: hidden;
 }
 
+.task-progress-value {
+  min-width: 32px;
+  font-size: 11px;
+  color: var(--vscode-descriptionForeground);
+  text-align: right;
+}
+
 .task-progress-fill {
   height: 100%;
   background-color: var(--vscode-focusBorder);

src/renderer/components/Panel/Panel.tsx

@@ -1,5 +1,6 @@
 import React, { useEffect, useMemo, useRef, useState } from 'react';
 import { useAppStore } from '../../store';
+import type { TaskProgress } from '../../../main/shared/electronApi';
 import './Panel.css';
 
 function getPostRelativePath(createdAt: string, slug: string): string | null {
@@ -33,6 +34,72 @@ function toRelativePath(absolutePath: string, projectPath: string): string {
   return normalizedAbsolute;
 }
 
+interface GroupedTaskEntry {
+  kind: 'group';
+  groupId: string;
+  groupName: string;
+  tasks: TaskProgress[];
+}
+
+interface SingleTaskEntry {
+  kind: 'single';
+  task: TaskProgress;
+}
+
+type TaskEntry = GroupedTaskEntry | SingleTaskEntry;
+
+function buildTaskEntries(tasks: TaskProgress[]): TaskEntry[] {
+  const groupMap = new Map<string, { groupName: string; tasks: TaskProgress[]; firstIndex: number }>();
+  const singles: Array<{ task: TaskProgress; index: number }> = [];
+
+  tasks.forEach((task, index) => {
+    if (!task.groupId) {
+      singles.push({ task, index });
+      return;
+    }
+
+    const existing = groupMap.get(task.groupId);
+    if (existing) {
+      existing.tasks.push(task);
+      return;
+    }
+
+    groupMap.set(task.groupId, {
+      groupName: task.groupName || task.groupId,
+      tasks: [task],
+      firstIndex: index,
+    });
+  });
+
+  const entries: Array<{ entry: TaskEntry; index: number }> = [];
+
+  for (const single of singles) {
+    entries.push({
+      index: single.index,
+      entry: {
+        kind: 'single',
+        task: single.task,
+      },
+    });
+  }
+
+  for (const [groupId, group] of groupMap.entries()) {
+    entries.push({
+      index: group.firstIndex,
+      entry: {
+        kind: 'group',
+        groupId,
+        groupName: group.groupName,
+        tasks: group.tasks,
+      },
+    });
+  }
+
+  return entries
+    .sort((a, b) => a.index - b.index)
+    .map((entry) => entry.entry);
+}
+
 export const Panel: React.FC = () => {
   const {
     panelVisible,
@@ -48,6 +115,7 @@ export const Panel: React.FC = () => {
     setSelectedPost,
     setActiveView,
   } = useAppStore();
+  const [collapsedTaskGroups, setCollapsedTaskGroups] = useState<Set<string>>(new Set());
   const [gitLogLoading, setGitLogLoading] = useState(false);
   const [gitLogError, setGitLogError] = useState<string | null>(null);
   const [postLinksLoading, setPostLinksLoading] = useState(false);
@@ -69,6 +137,7 @@ export const Panel: React.FC = () => {
   const requestIdRef = useRef(0);
 
   const recentTasks = tasks.slice(-10).reverse();
+  const recentTaskEntries = useMemo(() => buildTaskEntries(recentTasks), [recentTasks]);
   const activeEditorTab = useMemo(() => tabs.find((tab) => tab.id === activeTabId) ?? null, [tabs, activeTabId]);
   const canActivatePostLinks = activeEditorTab?.type === 'post';
   const canActivateGitLog = activeEditorTab?.type === 'post' || activeEditorTab?.type === 'media';
@@ -230,6 +299,52 @@ export const Panel: React.FC = () => {
     setActiveView('posts');
   };
 
+  const toggleTaskGroup = (groupId: string) => {
+    setCollapsedTaskGroups((prev) => {
+      const next = new Set(prev);
+      if (next.has(groupId)) {
+        next.delete(groupId);
+      } else {
+        next.add(groupId);
+      }
+      return next;
+    });
+  };
+
+  const renderTaskRow = (task: TaskProgress, isChild = false) => (
+    <div key={task.taskId} className={`task-item status-${task.status} ${isChild ? 'task-child-row' : ''}`.trim()}>
+      <div className="task-status">
+        {task.status === 'running' && <span className="task-spinner" />}
+        {task.status === 'completed' && <span className="task-check">✓</span>}
+        {task.status === 'failed' && <span className="task-error">✗</span>}
+        {task.status === 'pending' && <span className="task-pending">○</span>}
+      </div>
+      <div className="task-info">
+        <div className="task-name">{task.name || task.taskId}</div>
+        <div className="task-message">{task.message}</div>
+        {(task.status === 'running' || task.status === 'pending') && (
+          <div className="task-progress-row">
+            <div className="task-progress-bar">
+              <div
+                className="task-progress-fill"
+                style={{ width: `${task.progress}%` }}
+              />
+            </div>
+            <span className="task-progress-value">{Math.round(task.progress)}%</span>
+          </div>
+        )}
+      </div>
+      {task.status === 'running' && (
+        <button
+          className="task-cancel"
+          onClick={() => window.electronAPI?.tasks.cancel(task.taskId)}
+        >
+          Cancel
+        </button>
+      )}
+    </div>
+  );
+
   return (
     <div className="panel">
       <div className="panel-header">
@@ -292,35 +407,28 @@ export const Panel: React.FC = () => {
             <div className="panel-empty">No recent tasks</div>
           ) : (
             <div className="task-list">
-              {recentTasks.map(task => (
-                <div key={task.taskId} className={`task-item status-${task.status}`}>
-                  <div className="task-status">
-                    {task.status === 'running' && <span className="task-spinner" />}
-                    {task.status === 'completed' && <span className="task-check">✓</span>}
-                    {task.status === 'failed' && <span className="task-error">✗</span>}
-                    {task.status === 'pending' && <span className="task-pending">○</span>}
-                  </div>
-                  <div className="task-info">
-                    <div className="task-message">{task.message}</div>
-                    {task.status === 'running' && (
-                      <div className="task-progress-bar">
-                        <div
-                          className="task-progress-fill"
-                          style={{ width: `${task.progress}%` }}
-                        />
-                      </div>
-                    )}
-                  </div>
-                  {task.status === 'running' && (
+              {recentTaskEntries.map((entry) => {
+                if (entry.kind === 'single') {
+                  return renderTaskRow(entry.task);
+                }
+
+                const expanded = !collapsedTaskGroups.has(entry.groupId);
+                return (
+                  <div key={entry.groupId} className="task-group-row">
                     <button
-                      className="task-cancel"
-                      onClick={() => window.electronAPI?.tasks.cancel(task.taskId)}
+                      type="button"
+                      className="task-group-toggle"
+                      onClick={() => toggleTaskGroup(entry.groupId)}
+                      aria-expanded={expanded}
+                      aria-label={`${entry.groupName} (${entry.tasks.length})`}
                     >
-                      Cancel
+                      <span className="task-group-chevron">{expanded ? '▾' : '▸'}</span>
+                      <span className="task-group-title">{entry.groupName} ({entry.tasks.length})</span>
                     </button>
-                  )}
+                    {expanded && entry.tasks.map((task) => renderTaskRow(task, true))}
                   </div>
-              ))}
+                );
+              })}
             </div>
           )
         )}

src/renderer/components/TaskPopup/TaskPopup.css

@@ -108,6 +108,41 @@
   background-color: var(--vscode-list-hoverBackground);
 }
 
+.task-group {
+  display: block;
+}
+
+.task-group-toggle {
+  width: 100%;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 8px 16px;
+  border: none;
+  background: transparent;
+  color: var(--vscode-foreground);
+  text-align: left;
+  cursor: pointer;
+}
+
+.task-group-toggle:hover {
+  background-color: var(--vscode-list-hoverBackground);
+}
+
+.task-group-chevron {
+  color: var(--vscode-descriptionForeground);
+  width: 10px;
+}
+
+.task-group-title {
+  font-size: 12px;
+  font-weight: 600;
+}
+
+.task-group-child {
+  padding-left: 28px;
+}
+
 .task-item-info {
   display: flex;
   align-items: flex-start;

src/renderer/components/TaskPopup/TaskPopup.tsx

@@ -1,10 +1,78 @@
 import React, { useState, useRef, useEffect } from 'react';
 import { useAppStore } from '../../store';
+import type { TaskProgress } from '../../../main/shared/electronApi';
 import './TaskPopup.css';
 
+interface GroupedTaskEntry {
+  kind: 'group';
+  groupId: string;
+  groupName: string;
+  tasks: TaskProgress[];
+}
+
+interface SingleTaskEntry {
+  kind: 'single';
+  task: TaskProgress;
+}
+
+type TaskEntry = GroupedTaskEntry | SingleTaskEntry;
+
+function buildTaskEntries(tasks: TaskProgress[]): TaskEntry[] {
+  const groupMap = new Map<string, { groupName: string; tasks: TaskProgress[]; firstIndex: number }>();
+  const singles: Array<{ task: TaskProgress; index: number }> = [];
+
+  tasks.forEach((task, index) => {
+    if (!task.groupId) {
+      singles.push({ task, index });
+      return;
+    }
+
+    const existing = groupMap.get(task.groupId);
+    if (existing) {
+      existing.tasks.push(task);
+      return;
+    }
+
+    groupMap.set(task.groupId, {
+      groupName: task.groupName || task.groupId,
+      tasks: [task],
+      firstIndex: index,
+    });
+  });
+
+  const groupedEntries: Array<{ entry: TaskEntry; index: number }> = [];
+
+  for (const single of singles) {
+    groupedEntries.push({
+      index: single.index,
+      entry: {
+        kind: 'single',
+        task: single.task,
+      },
+    });
+  }
+
+  for (const [groupId, group] of groupMap.entries()) {
+    groupedEntries.push({
+      index: group.firstIndex,
+      entry: {
+        kind: 'group',
+        groupId,
+        groupName: group.groupName,
+        tasks: group.tasks,
+      },
+    });
+  }
+
+  return groupedEntries
+    .sort((a, b) => a.index - b.index)
+    .map((item) => item.entry);
+}
+
 export const TaskPopup: React.FC = () => {
   const { tasks } = useAppStore();
   const [isOpen, setIsOpen] = useState(false);
+  const [collapsedGroups, setCollapsedGroups] = useState<Set<string>>(new Set());
   const popupRef = useRef<HTMLDivElement>(null);
 
   const runningTasks = tasks.filter(t => t.status === 'running');
@@ -20,6 +88,10 @@ export const TaskPopup: React.FC = () => {
 
   const hasActiveTasks = runningTasks.length > 0 || pendingTasks.length > 0;
 
+  const runningEntries = buildTaskEntries(runningTasks);
+  const pendingEntries = buildTaskEntries(pendingTasks);
+  const recentEntries = buildTaskEntries(recentTasks);
+
   // Close popup when clicking outside
   useEffect(() => {
     const handleClickOutside = (e: MouseEvent) => {
@@ -67,6 +139,74 @@ export const TaskPopup: React.FC = () => {
     }
   };
 
+  const toggleGroup = (groupId: string) => {
+    setCollapsedGroups((prev) => {
+      const next = new Set(prev);
+      if (next.has(groupId)) {
+        next.delete(groupId);
+      } else {
+        next.add(groupId);
+      }
+      return next;
+    });
+  };
+
+  const renderTaskItem = (task: TaskProgress, className: string = '') => (
+    <div key={task.taskId} className={`task-item ${task.status} ${className}`.trim()}>
+      <div className="task-item-info">
+        {getStatusIcon(task.status)}
+        <div className="task-item-details">
+          <div className="task-item-message">{task.message}</div>
+          {task.status === 'running' && (
+            <div className="task-progress-bar">
+              <div
+                className="task-progress-fill"
+                style={{ width: `${task.progress}%` }}
+              />
+            </div>
+          )}
+          {task.error && (
+            <div className="task-item-error">{task.error}</div>
+          )}
+        </div>
+      </div>
+      {(task.status === 'running' || task.status === 'pending') && (
+        <button
+          className="task-cancel"
+          onClick={() => handleCancel(task.taskId)}
+          title="Cancel task"
+        >
+          ✕
+        </button>
+      )}
+      {(task.status === 'completed' || task.status === 'failed') && task.endTime && (
+        <span className="task-time">{formatTime(task.endTime)}</span>
+      )}
+    </div>
+  );
+
+  const renderEntries = (entries: TaskEntry[]) => entries.map((entry) => {
+    if (entry.kind === 'single') {
+      return renderTaskItem(entry.task);
+    }
+
+    const isExpanded = !collapsedGroups.has(entry.groupId);
+    return (
+      <div key={entry.groupId} className="task-group">
+        <button
+          className="task-group-toggle"
+          onClick={() => toggleGroup(entry.groupId)}
+          aria-expanded={isExpanded}
+          aria-label={`${entry.groupName} (${entry.tasks.length})`}
+        >
+          <span className="task-group-chevron">{isExpanded ? '▾' : '▸'}</span>
+          <span className="task-group-title">{entry.groupName} ({entry.tasks.length})</span>
+        </button>
+        {isExpanded && entry.tasks.map((task) => renderTaskItem(task, 'task-group-child'))}
+      </div>
+    );
+  });
+
   if (!hasActiveTasks && recentTasks.length === 0) {
     return null;
   }
@@ -107,74 +247,21 @@ export const TaskPopup: React.FC = () => {
           {runningTasks.length > 0 && (
             <div className="task-section">
               <div className="task-section-title">Running</div>
-              {runningTasks.map(task => (
-                <div key={task.taskId} className="task-item running">
-                  <div className="task-item-info">
-                    {getStatusIcon(task.status)}
-                    <div className="task-item-details">
-                      <div className="task-item-message">{task.message}</div>
-                      <div className="task-progress-bar">
-                        <div 
-                          className="task-progress-fill" 
-                          style={{ width: `${task.progress}%` }}
-                        />
-                      </div>
-                    </div>
-                  </div>
-                  <button 
-                    className="task-cancel" 
-                    onClick={() => handleCancel(task.taskId)}
-                    title="Cancel task"
-                  >
-                    ✕
-                  </button>
-                </div>
-              ))}
+              {renderEntries(runningEntries)}
             </div>
           )}
 
           {pendingTasks.length > 0 && (
             <div className="task-section">
               <div className="task-section-title">Pending</div>
-              {pendingTasks.map(task => (
-                <div key={task.taskId} className="task-item pending">
-                  <div className="task-item-info">
-                    {getStatusIcon(task.status)}
-                    <div className="task-item-details">
-                      <div className="task-item-message">{task.message}</div>
-                    </div>
-                  </div>
-                  <button 
-                    className="task-cancel" 
-                    onClick={() => handleCancel(task.taskId)}
-                    title="Cancel task"
-                  >
-                    ✕
-                  </button>
-                </div>
-              ))}
+              {renderEntries(pendingEntries)}
             </div>
           )}
 
           {recentTasks.length > 0 && (
             <div className="task-section">
               <div className="task-section-title">Recent</div>
-              {recentTasks.map(task => (
-                <div key={task.taskId} className={`task-item ${task.status}`}>
-                  <div className="task-item-info">
-                    {getStatusIcon(task.status)}
-                    <div className="task-item-details">
-                      <div className="task-item-message">{task.message}</div>
-                      {task.error && (
-                        <div className="task-item-error">{task.error}</div>
-                      )}
-                    </div>
-                  </div>
-                  {task.endTime && (
-                    <span className="task-time">{formatTime(task.endTime)}</span>
-                  )}
-                </div>
-              ))}
+              {renderEntries(recentEntries)}
             </div>
           )}
 

src/renderer/store/appStore.ts

@@ -358,7 +358,7 @@ export const useAppStore = create<AppState>()(
           return { tasks: state.tasks.map((t) => (t.taskId === taskId ? { ...t, ...task } : t)) };
         }
         // Add new task if it doesn't exist yet
-        return { tasks: [...state.tasks, { taskId, status: 'running', progress: 0, message: '', startTime: new Date().toISOString(), ...task } as TaskProgress] };
+        return { tasks: [...state.tasks, { taskId, name: '', status: 'running', progress: 0, message: '', startTime: new Date().toISOString(), ...task } as TaskProgress] };
       }),
       
       // Loading Actions

tests/engine/BlogGenerationEngine.test.ts

@@ -0,0 +1,514 @@
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { mkdtemp, readFile, rm, readdir, stat } from 'node:fs/promises';
+import path from 'node:path';
+import { tmpdir } from 'node:os';
+import type { PostData } from '../../src/main/engine/PostEngine';
+
+const generatedFileHashes = new Map<string, string>();
+const getGeneratedFileHashMock = vi.fn(async (projectId: string, relativePath: string) => {
+  const key = `${projectId}:${relativePath}`;
+  return generatedFileHashes.get(key) ?? null;
+});
+const setGeneratedFileHashMock = vi.fn(async (projectId: string, relativePath: string, hash: string) => {
+  const key = `${projectId}:${relativePath}`;
+  generatedFileHashes.set(key, hash);
+});
+const executeDbSql = vi.fn(async (input: { sql: string; args?: unknown[] }) => {
+  const sqlText = input.sql.replace(/\s+/g, ' ').trim();
+  const args = input.args ?? [];
+
+  if (sqlText.startsWith('CREATE TABLE IF NOT EXISTS generated_file_hashes')) {
+    return { rows: [] };
+  }
+
+  if (sqlText.startsWith('SELECT content_hash FROM generated_file_hashes')) {
+    const key = `${String(args[0] ?? '')}:${String(args[1] ?? '')}`;
+    const hash = generatedFileHashes.get(key);
+    return { rows: hash ? [{ content_hash: hash }] : [] };
+  }
+
+  if (sqlText.startsWith('INSERT INTO generated_file_hashes')) {
+    const key = `${String(args[0] ?? '')}:${String(args[1] ?? '')}`;
+    generatedFileHashes.set(key, String(args[2] ?? ''));
+    return { rows: [] };
+  }
+
+  return { rows: [] };
+});
+
+vi.mock('../../src/main/database/generatedFileHashStore', () => ({
+  getGeneratedFileHash: getGeneratedFileHashMock,
+  setGeneratedFileHash: setGeneratedFileHashMock,
+}));
+
+vi.mock('../../src/main/database', () => ({
+  getDatabase: vi.fn(() => ({
+    getLocalClient: vi.fn(() => ({
+      execute: executeDbSql,
+    })),
+  })),
+}));
+
+vi.mock('../../src/main/engine/PostEngine', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('../../src/main/engine/PostEngine')>();
+  const mockPostEngine = {
+    getPostsFiltered: vi.fn(async () => []),
+    getPublishedVersion: vi.fn(async () => null),
+    getPost: vi.fn(async () => null),
+    setProjectContext: vi.fn(),
+  };
+  return {
+    ...actual,
+    getPostEngine: vi.fn(() => mockPostEngine),
+    __mockPostEngine: mockPostEngine,
+  };
+});
+
+vi.mock('../../src/main/engine/MediaEngine', () => {
+  const mockMediaEngine = {
+    getAllMedia: vi.fn(async () => []),
+    setProjectContext: vi.fn(),
+  };
+  return {
+    getMediaEngine: vi.fn(() => mockMediaEngine),
+    __mockMediaEngine: mockMediaEngine,
+  };
+});
+
+vi.mock('../../src/main/engine/PostMediaEngine', () => {
+  const mockPostMediaEngine = {
+    getLinkedMediaDataForPost: vi.fn(async () => []),
+    setProjectContext: vi.fn(),
+  };
+  return {
+    getPostMediaEngine: vi.fn(() => mockPostMediaEngine),
+    __mockPostMediaEngine: mockPostMediaEngine,
+  };
+});
+
+function makePost(overrides: Partial<PostData> = {}): PostData {
+  const createdAt = overrides.createdAt ?? new Date('2025-01-15T10:00:00.000Z');
+  const updatedAt = overrides.updatedAt ?? createdAt;
+  return {
+    id: overrides.id ?? 'post-1',
+    projectId: overrides.projectId ?? 'default',
+    title: overrides.title ?? 'Test Post',
+    slug: overrides.slug ?? 'test-post',
+    excerpt: overrides.excerpt,
+    content: overrides.content ?? '# Test\n\nBody text',
+    status: overrides.status ?? 'published',
+    author: overrides.author,
+    createdAt,
+    updatedAt,
+    publishedAt: overrides.publishedAt ?? createdAt,
+    tags: overrides.tags ?? [],
+    categories: overrides.categories ?? [],
+  };
+}
+
+async function fileExists(filePath: string): Promise<boolean> {
+  try {
+    await stat(filePath);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+async function listFiles(dir: string, prefix = ''): Promise<string[]> {
+  const files: string[] = [];
+  try {
+    const entries = await readdir(dir, { withFileTypes: true });
+    for (const entry of entries) {
+      const relative = prefix ? `${prefix}/${entry.name}` : entry.name;
+      if (entry.isDirectory()) {
+        files.push(...await listFiles(path.join(dir, entry.name), relative));
+      } else {
+        files.push(relative);
+      }
+    }
+  } catch {
+    // dir doesn't exist
+  }
+  return files.sort();
+}
+
+describe('BlogGenerationEngine', () => {
+  let tempDir: string;
+  let mockPostEngine: any;
+
+  beforeEach(async () => {
+    vi.clearAllMocks();
+    generatedFileHashes.clear();
+    tempDir = await mkdtemp(path.join(tmpdir(), 'bds-gen-'));
+
+    const { __mockPostEngine } = await import('../../src/main/engine/PostEngine') as any;
+    mockPostEngine = __mockPostEngine;
+  });
+
+  afterEach(async () => {
+    if (tempDir) {
+      await rm(tempDir, { recursive: true, force: true });
+    }
+  });
+
+  function setupPosts(posts: PostData[]): void {
+    mockPostEngine.getPostsFiltered.mockImplementation(async (filter: { status?: string }) => {
+      return posts.filter((p) => p.status === (filter.status ?? p.status));
+    });
+    mockPostEngine.getPublishedVersion.mockResolvedValue(null);
+    mockPostEngine.getPost.mockImplementation(async (id: string) => {
+      return posts.find((p) => p.id === id) ?? null;
+    });
+  }
+
+  async function generate(posts: PostData[], options?: Partial<{ maxPostsPerPage: number; language: string; pageTitle: string }>) {
+    setupPosts(posts);
+    const { BlogGenerationEngine } = await import('../../src/main/engine/BlogGenerationEngine');
+    const engine = new BlogGenerationEngine();
+    const onProgress = vi.fn();
+    return engine.generate({
+      projectId: 'test',
+      projectName: 'Test Blog',
+      dataDir: tempDir,
+      baseUrl: 'https://example.com',
+      maxPostsPerPage: options?.maxPostsPerPage,
+      language: options?.language,
+      pageTitle: options?.pageTitle,
+    }, onProgress);
+  }
+
+  it('copies all required asset files to html/assets/ and html/images/', async () => {
+    const result = await generate([]);
+
+    expect(await fileExists(path.join(tempDir, 'html', 'assets', 'pico.min.css'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'assets', 'lightbox.min.css'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'assets', 'lightbox.min.js'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'images', 'prev.png'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'images', 'next.png'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'images', 'close.png'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'images', 'loading.gif'))).toBe(true);
+
+    const picoContent = await readFile(path.join(tempDir, 'html', 'assets', 'pico.min.css'), 'utf-8');
+    expect(picoContent.length).toBeGreaterThan(0);
+  });
+
+  it('generates root index.html for published posts', async () => {
+    const posts = [
+      makePost({ id: '1', slug: 'first', title: 'First Post' }),
+      makePost({ id: '2', slug: 'second', title: 'Second Post' }),
+    ];
+
+    const result = await generate(posts);
+
+    expect(result.pagesGenerated).toBeGreaterThan(0);
+    const indexPath = path.join(tempDir, 'html', 'index.html');
+    expect(await fileExists(indexPath)).toBe(true);
+
+    const html = await readFile(indexPath, 'utf-8');
+    expect(html).toContain('data-template="post-list"');
+    expect(html).toContain('/assets/pico.min.css');
+    expect(html).toContain('/assets/lightbox.min.css');
+  });
+
+  it('generates single post pages at /{year}/{month}/{day}/{slug}/index.html', async () => {
+    const posts = [
+      makePost({ id: '1', slug: 'hello-world', createdAt: new Date('2025-03-15T10:00:00Z') }),
+    ];
+
+    await generate(posts);
+
+    const postPath = path.join(tempDir, 'html', '2025', '03', '15', 'hello-world', 'index.html');
+    expect(await fileExists(postPath)).toBe(true);
+
+    const html = await readFile(postPath, 'utf-8');
+    expect(html).toContain('data-template="single-post"');
+  });
+
+  it('generates category pages with correct archive context', async () => {
+    const posts = [
+      makePost({ id: '1', slug: 'news-1', title: 'News 1', categories: ['news'] }),
+      makePost({ id: '2', slug: 'tech-1', title: 'Tech 1', categories: ['tech'] }),
+    ];
+
+    await generate(posts);
+
+    const newsPath = path.join(tempDir, 'html', 'category', 'news', 'index.html');
+    const techPath = path.join(tempDir, 'html', 'category', 'tech', 'index.html');
+    expect(await fileExists(newsPath)).toBe(true);
+    expect(await fileExists(techPath)).toBe(true);
+
+    const newsHtml = await readFile(newsPath, 'utf-8');
+    expect(newsHtml).toContain('news');
+    expect(newsHtml).toContain('data-template="post-list"');
+  });
+
+  it('generates tag pages with correct archive context', async () => {
+    const posts = [
+      makePost({ id: '1', slug: 'tagged-1', title: 'Tagged 1', tags: ['javascript'] }),
+      makePost({ id: '2', slug: 'tagged-2', title: 'Tagged 2', tags: ['typescript'] }),
+    ];
+
+    await generate(posts);
+
+    const jsPath = path.join(tempDir, 'html', 'tag', 'javascript', 'index.html');
+    const tsPath = path.join(tempDir, 'html', 'tag', 'typescript', 'index.html');
+    expect(await fileExists(jsPath)).toBe(true);
+    expect(await fileExists(tsPath)).toBe(true);
+
+    const jsHtml = await readFile(jsPath, 'utf-8');
+    expect(jsHtml).toContain('javascript');
+    expect(jsHtml).toContain('data-template="post-list"');
+  });
+
+  it('generates pagination pages for categories with many posts', async () => {
+    const posts: PostData[] = [];
+    for (let i = 0; i < 5; i++) {
+      posts.push(makePost({
+        id: `post-${i}`,
+        slug: `post-${i}`,
+        title: `Post ${i}`,
+        categories: ['big-category'],
+        createdAt: new Date(`2025-01-${String(i + 1).padStart(2, '0')}T10:00:00Z`),
+      }));
+    }
+
+    await generate(posts, { maxPostsPerPage: 2 });
+
+    expect(await fileExists(path.join(tempDir, 'html', 'category', 'big-category', 'index.html'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'category', 'big-category', 'page', '2', 'index.html'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'category', 'big-category', 'page', '3', 'index.html'))).toBe(true);
+  });
+
+  it('generates pagination pages for tags with many posts', async () => {
+    const posts: PostData[] = [];
+    for (let i = 0; i < 4; i++) {
+      posts.push(makePost({
+        id: `post-${i}`,
+        slug: `post-${i}`,
+        title: `Post ${i}`,
+        tags: ['popular'],
+        createdAt: new Date(`2025-01-${String(i + 1).padStart(2, '0')}T10:00:00Z`),
+      }));
+    }
+
+    await generate(posts, { maxPostsPerPage: 2 });
+
+    expect(await fileExists(path.join(tempDir, 'html', 'tag', 'popular', 'index.html'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'tag', 'popular', 'page', '2', 'index.html'))).toBe(true);
+  });
+
+  it('generates root pagination pages', async () => {
+    const posts: PostData[] = [];
+    for (let i = 0; i < 4; i++) {
+      posts.push(makePost({
+        id: `post-${i}`,
+        slug: `post-${i}`,
+        title: `Post ${i}`,
+        createdAt: new Date(`2025-01-${String(i + 1).padStart(2, '0')}T10:00:00Z`),
+      }));
+    }
+
+    await generate(posts, { maxPostsPerPage: 2 });
+
+    expect(await fileExists(path.join(tempDir, 'html', 'index.html'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'page', '2', 'index.html'))).toBe(true);
+  });
+
+  it('generates year, month, and day archive pages', async () => {
+    const posts = [
+      makePost({ id: '1', slug: 'jan-post', createdAt: new Date('2025-01-15T10:00:00Z') }),
+      makePost({ id: '2', slug: 'feb-post', createdAt: new Date('2025-02-20T10:00:00Z') }),
+    ];
+
+    await generate(posts);
+
+    // Year archive
+    expect(await fileExists(path.join(tempDir, 'html', '2025', 'index.html'))).toBe(true);
+    // Month archives
+    expect(await fileExists(path.join(tempDir, 'html', '2025', '01', 'index.html'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', '2025', '02', 'index.html'))).toBe(true);
+    // Day archives
+    expect(await fileExists(path.join(tempDir, 'html', '2025', '01', '15', 'index.html'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', '2025', '02', '20', 'index.html'))).toBe(true);
+  });
+
+  it('excludes draft-only posts from generated pages', async () => {
+    const posts = [
+      makePost({ id: '1', slug: 'published', title: 'Published', status: 'published' }),
+      makePost({ id: '2', slug: 'draft-only', title: 'Draft Only', status: 'draft' }),
+    ];
+
+    const result = await generate(posts);
+
+    expect(result.postCount).toBe(1);
+    expect(await fileExists(path.join(tempDir, 'html', '2025', '01', '15', 'published', 'index.html'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', '2025', '01', '15', 'draft-only', 'index.html'))).toBe(false);
+  });
+
+  it('includes draft posts that have a published version', async () => {
+    const publishedPost = makePost({ id: '1', slug: 'with-published', title: 'Published Version', status: 'published' });
+    const draftWithPublished = makePost({ id: '2', slug: 'draft-has-pub', title: 'Draft Has Published', status: 'draft' });
+    const publishedVersion = makePost({ id: '2', slug: 'draft-has-pub', title: 'Published Version of Draft', status: 'published', createdAt: new Date('2025-02-10T10:00:00Z') });
+
+    mockPostEngine.getPostsFiltered.mockImplementation(async (filter: { status?: string }) => {
+      if (filter.status === 'published') return [publishedPost];
+      if (filter.status === 'draft') return [draftWithPublished];
+      return [];
+    });
+    mockPostEngine.getPublishedVersion.mockImplementation(async (id: string) => {
+      if (id === '2') return publishedVersion;
+      return null;
+    });
+    mockPostEngine.getPost.mockImplementation(async (id: string) => {
+      if (id === '1') return publishedPost;
+      if (id === '2') return publishedVersion;
+      return null;
+    });
+
+    const { BlogGenerationEngine } = await import('../../src/main/engine/BlogGenerationEngine');
+    const engine = new BlogGenerationEngine();
+    const result = await engine.generate({
+      projectId: 'test',
+      projectName: 'Test Blog',
+      dataDir: tempDir,
+      baseUrl: 'https://example.com',
+    }, vi.fn());
+
+    expect(result.postCount).toBe(2);
+    expect(await fileExists(path.join(tempDir, 'html', '2025', '02', '10', 'draft-has-pub', 'index.html'))).toBe(true);
+  });
+
+  it('returns correct pagesGenerated count', async () => {
+    const posts = [
+      makePost({ id: '1', slug: 'post-a', categories: ['news'], tags: ['js'], createdAt: new Date('2025-01-15T10:00:00Z') }),
+    ];
+
+    const result = await generate(posts);
+
+    // Should have: root(1) + single(1) + category/news(1) + tag/js(1) + year(1) + month(1) + day(1) = 7
+    expect(result.pagesGenerated).toBe(7);
+  });
+
+  it('generates HTML that references local assets not CDN', async () => {
+    const posts = [makePost({ id: '1', slug: 'test' })];
+    await generate(posts);
+
+    const indexHtml = await readFile(path.join(tempDir, 'html', 'index.html'), 'utf-8');
+    expect(indexHtml).toContain('href="/assets/pico.min.css"');
+    expect(indexHtml).toContain('href="/assets/lightbox.min.css"');
+    expect(indexHtml).toContain('src="/assets/lightbox.min.js"');
+    expect(indexHtml).not.toContain('cdn.jsdelivr.net');
+    expect(indexHtml).not.toContain('cdnjs.cloudflare.com');
+  });
+
+  it('handles categories with special characters via URL encoding', async () => {
+    const posts = [
+      makePost({ id: '1', slug: 'special', categories: ['my category'] }),
+    ];
+
+    await generate(posts);
+
+    expect(await fileExists(path.join(tempDir, 'html', 'category', 'my%20category', 'index.html'))).toBe(true);
+  });
+
+  it('generates static page routes at /{slug}/index.html for posts in category page', async () => {
+    const posts = [
+      makePost({ id: 'page-1', slug: 'about', title: 'About', categories: ['page'] }),
+      makePost({ id: 'post-1', slug: 'hello-world', title: 'Hello World', categories: ['blog'] }),
+    ];
+
+    await generate(posts);
+
+    expect(await fileExists(path.join(tempDir, 'html', 'about', 'index.html'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'hello-world', 'index.html'))).toBe(false);
+  });
+
+  it('generates canonical post routes only and does not generate aliases', async () => {
+    const posts = [
+      makePost({ id: '1', slug: 'alias-test', createdAt: new Date('2025-03-15T10:00:00Z') }),
+    ];
+
+    await generate(posts);
+
+    expect(await fileExists(path.join(tempDir, 'html', '2025', '03', '15', 'alias-test', 'index.html'))).toBe(true);
+    expect(await fileExists(path.join(tempDir, 'html', 'posts', 'alias-test', 'index.html'))).toBe(false);
+    expect(await fileExists(path.join(tempDir, 'html', 'posts', '2025', '03', 'alias-test', 'index.html'))).toBe(false);
+    expect(await fileExists(path.join(tempDir, 'html', 'post', 'alias-test', 'index.html'))).toBe(false);
+    expect(await fileExists(path.join(tempDir, 'html', 'post', '2025', '03', 'alias-test', 'index.html'))).toBe(false);
+  });
+
+  it('does not overwrite unchanged html files on subsequent generation runs', async () => {
+    const posts = [
+      makePost({ id: '1', slug: 'stable-post', createdAt: new Date('2025-03-15T10:00:00Z') }),
+    ];
+
+    await generate(posts);
+
+    const canonicalPath = path.join(tempDir, 'html', '2025', '03', '15', 'stable-post', 'index.html');
+    const beforeStat = await stat(canonicalPath);
+
+    await new Promise((resolve) => setTimeout(resolve, 20));
+    await generate(posts);
+
+    const afterStat = await stat(canonicalPath);
+    expect(afterStat.mtimeMs).toBe(beforeStat.mtimeMs);
+  });
+
+  it('delegates hash reads/writes to generated file hash store module', async () => {
+    const posts = [makePost({ id: '1', slug: 'delegation-check' })];
+
+    await generate(posts);
+
+    expect(getGeneratedFileHashMock).toHaveBeenCalled();
+    expect(setGeneratedFileHashMock).toHaveBeenCalled();
+  });
+
+  it('does not execute CREATE TABLE statements during generation runtime', async () => {
+    const posts = [makePost({ id: '1', slug: 'runtime-ddl-test' })];
+
+    await generate(posts);
+
+    const createTableCalls = executeDbSql.mock.calls.filter(([input]) => {
+      const sql = typeof input?.sql === 'string' ? input.sql : '';
+      return sql.toUpperCase().includes('CREATE TABLE');
+    });
+
+    expect(createTableCalls).toHaveLength(0);
+  });
+
+  it('does not create html/media folder during generation', async () => {
+    const posts = [makePost({ id: '1', slug: 'test' })];
+
+    await generate(posts);
+
+    expect(await fileExists(path.join(tempDir, 'html', 'media'))).toBe(false);
+  });
+
+  it('generates zero pages when there are no published posts', async () => {
+    const result = await generate([]);
+    expect(result.pagesGenerated).toBe(0);
+    expect(result.postCount).toBe(0);
+  });
+
+  it('generates pagination links in list pages', async () => {
+    const posts: PostData[] = [];
+    for (let i = 0; i < 4; i++) {
+      posts.push(makePost({
+        id: `p-${i}`,
+        slug: `p-${i}`,
+        title: `Post ${i}`,
+        tags: ['paginated'],
+        createdAt: new Date(`2025-01-${String(i + 1).padStart(2, '0')}T10:00:00Z`),
+      }));
+    }
+
+    await generate(posts, { maxPostsPerPage: 2 });
+
+    const page1 = await readFile(path.join(tempDir, 'html', 'tag', 'paginated', 'index.html'), 'utf-8');
+    expect(page1).toContain('/tag/paginated/page/2/');
+
+    const page2 = await readFile(path.join(tempDir, 'html', 'tag', 'paginated', 'page', '2', 'index.html'), 'utf-8');
+    expect(page2).toContain('/tag/paginated/');
+  });
+});

tests/ipc/handlers.test.ts

@@ -175,7 +175,7 @@ const mockTaskManager = {
   off: vi.fn(),
 };
 
-const mockSettingsStore = new Map<string, string>();
+const mockGeneratedFileHashStore = new Map<string, string>();
 
 const mockDatabase = {
   getLocal: vi.fn(() => ({
@@ -189,19 +189,23 @@ const mockDatabase = {
   })),
   getLocalClient: vi.fn(() => ({
     execute: vi.fn(async ({ sql, args }: { sql: string; args?: any[] }) => {
-      if (sql.startsWith('SELECT value FROM settings WHERE key = ?')) {
-        const key = String(args?.[0] ?? '');
+      if (sql.includes('CREATE TABLE IF NOT EXISTS generated_file_hashes')) {
+        return { rows: [] };
+      }
+
+      if (sql.startsWith('SELECT content_hash FROM generated_file_hashes')) {
+        const key = `${String(args?.[0] ?? '')}:${String(args?.[1] ?? '')}`;
         return {
-          rows: mockSettingsStore.has(key)
-            ? [{ value: mockSettingsStore.get(key) as string }]
+          rows: mockGeneratedFileHashStore.has(key)
+            ? [{ content_hash: mockGeneratedFileHashStore.get(key) as string }]
             : [],
         };
       }
 
-      if (sql.startsWith('INSERT INTO settings')) {
-        const key = String(args?.[0] ?? '');
-        const value = String(args?.[1] ?? '');
-        mockSettingsStore.set(key, value);
+      if (sql.includes('INSERT INTO generated_file_hashes')) {
+        const key = `${String(args?.[0] ?? '')}:${String(args?.[1] ?? '')}`;
+        const value = String(args?.[2] ?? '');
+        mockGeneratedFileHashStore.set(key, value);
         return { rowsAffected: 1 };
       }
 
@@ -258,6 +262,10 @@ vi.mock('../../src/main/database', () => ({
   getDatabase: vi.fn(() => mockDatabase),
 }));
 
+vi.mock('../../src/main/database/connection', () => ({
+  getDatabase: vi.fn(() => mockDatabase),
+}));
+
 vi.mock('../../src/main/engine/stemmer', () => ({
   isoToStemmerLanguage: vi.fn((iso: string) => iso === 'en' ? 'english' : 'german'),
 }));
@@ -294,7 +302,7 @@ describe('IPC Handlers', () => {
     // Clear all mocks
     vi.clearAllMocks();
     registeredHandlers.clear();
-    mockSettingsStore.clear();
+    mockGeneratedFileHashStore.clear();
     resetMockCounters();
     
     // Import and register handlers fresh for each test
@@ -1571,6 +1579,62 @@ describe('IPC Handlers', () => {
   // ============ Blog Handlers ============
   describe('Blog Handlers', () => {
     describe('blog:generateSitemap', () => {
+      it('should create separate background tasks for single, category, tag, and date rendering', async () => {
+        const mockProject = createMockProject({
+          id: 'test-project',
+          dataPath: '/mock/data',
+        });
+        mockProjectEngine.getActiveProject.mockResolvedValue(mockProject);
+        mockProjectEngine.getDataDir.mockReturnValue('/mock/data/dir');
+        mockMetaEngine.getProjectMetadata.mockResolvedValue({
+          name: 'Test Project',
+          publicUrl: 'https://blog.example.com',
+        });
+
+        mockPostEngine.getPostsFiltered.mockImplementation(async (filter: { status?: string }) => {
+          if (filter.status === 'published') {
+            return [
+              {
+                id: 'post-1',
+                projectId: 'test-project',
+                title: 'Test Post',
+                slug: 'test-post',
+                excerpt: '',
+                content: '# Test',
+                status: 'published',
+                createdAt: new Date('2024-01-15T10:00:00Z'),
+                updatedAt: new Date('2024-01-20T15:00:00Z'),
+                publishedAt: new Date('2024-01-15T10:00:00Z'),
+                tags: ['tag1'],
+                categories: ['category1'],
+              },
+            ];
+          }
+          if (filter.status === 'draft') {
+            return [];
+          }
+          return [];
+        });
+        mockPostEngine.getPublishedVersion.mockResolvedValue(null);
+
+        const { writeFile, mkdir } = await import('fs/promises');
+        vi.mocked(mkdir).mockResolvedValue(undefined);
+        vi.mocked(writeFile).mockResolvedValue(undefined);
+
+        mockTaskManager.runTask.mockImplementation(async (task: any) => {
+          return task.execute(vi.fn());
+        });
+
+        await invokeHandler('blog:generateSitemap');
+
+        const names = mockTaskManager.runTask.mock.calls.map((call: any[]) => call[0]?.name);
+        expect(names).toContain('Render Site Core');
+        expect(names).toContain('Render Single Posts');
+        expect(names).toContain('Render Category Archives');
+        expect(names).toContain('Render Tag Archives');
+        expect(names).toContain('Render Date Archives');
+      });
+
       it('should call taskManager.runTask with sitemap generation task', async () => {
         const mockProject = createMockProject({ 
           id: 'test-project',
@@ -1644,11 +1708,11 @@ describe('IPC Handlers', () => {
 
         const result = await invokeHandler('blog:generateSitemap');
 
-        // Verify taskManager.runTask was called
+        // Verify taskManager.runTask was called for core task orchestration
         expect(mockTaskManager.runTask).toHaveBeenCalledWith(
           expect.objectContaining({
-            id: expect.stringMatching(/^sitemap-generate-\d+$/),
-            name: 'Generate Sitemap',
+            id: expect.stringMatching(/^site-render-core-\d+$/),
+            name: 'Render Site Core',
             execute: expect.any(Function),
           })
         );
@@ -1838,7 +1902,11 @@ describe('IPC Handlers', () => {
         vi.mocked(writeFile).mockClear();
         await invokeHandler('blog:generateSitemap');
 
-        expect(writeFile).not.toHaveBeenCalled();
+        // Assets are always copied, but sitemap/feeds/pages should not be rewritten
+        const xmlWrites = vi.mocked(writeFile).mock.calls.filter(
+          ([filePath]) => typeof filePath === 'string' && (filePath.endsWith('.xml') || filePath.endsWith('index.html')),
+        );
+        expect(xmlWrites).toHaveLength(0);
       });
 
       it('should throw error when no active project', async () => {

tests/renderer/components/Panel.test.tsx

@@ -234,4 +234,39 @@ describe('Panel', () => {
 
     expect(screen.getByRole('tab', { name: 'Output' })).toHaveAttribute('aria-selected', 'true');
   });
+
+  it('renders grouped tasks as expandable parent rows with child task names in tasks tab', async () => {
+    useAppStore.setState({
+      tasks: [
+        {
+          taskId: 'site-render-core-1',
+          name: 'Render Site Core',
+          status: 'running',
+          progress: 42,
+          message: 'Generating root pages...',
+          startTime: '2026-02-20T10:00:00.000Z',
+          groupId: 'site-render-1',
+          groupName: 'Render Site',
+        },
+        {
+          taskId: 'site-render-tag-1',
+          name: 'Render Tag Archives',
+          status: 'pending',
+          progress: 0,
+          message: 'Waiting to start...',
+          startTime: '2026-02-20T10:00:01.000Z',
+          groupId: 'site-render-1',
+          groupName: 'Render Site',
+        },
+      ] as any,
+    });
+
+    render(<Panel />);
+
+    const parent = screen.getByRole('button', { name: 'Render Site (2)' });
+    expect(parent).toBeInTheDocument();
+    expect(await screen.findByText('Render Site Core')).toBeInTheDocument();
+    expect(screen.getByText('Render Tag Archives')).toBeInTheDocument();
+    expect(screen.getByText('42%')).toBeInTheDocument();
+  });
 });

tests/renderer/components/TaskPopup.test.tsx

@@ -0,0 +1,78 @@
+import React from 'react';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { fireEvent, render, screen } from '@testing-library/react';
+import { TaskPopup } from '../../../src/renderer/components/TaskPopup/TaskPopup';
+import { useAppStore } from '../../../src/renderer/store';
+import type { TaskProgress } from '../../../src/main/shared/electronApi';
+
+function makeTask(overrides: Partial<TaskProgress> = {}): TaskProgress {
+  return {
+    taskId: overrides.taskId ?? 'task-1',
+    status: overrides.status ?? 'running',
+    progress: overrides.progress ?? 10,
+    message: overrides.message ?? 'Running task',
+    startTime: overrides.startTime ?? '2026-02-20T10:00:00.000Z',
+    endTime: overrides.endTime,
+    error: overrides.error,
+    groupId: overrides.groupId,
+    groupName: overrides.groupName,
+  };
+}
+
+describe('TaskPopup grouped tasks', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    useAppStore.setState({
+      tasks: [],
+    });
+  });
+
+  it('shows grouped render tasks and expands to list child tasks', () => {
+    useAppStore.setState({
+      tasks: [
+        makeTask({
+          taskId: 'site-render-core-1',
+          status: 'running',
+          message: 'Generating root pages',
+          groupId: 'site-render-1',
+          groupName: 'Render Site',
+        }),
+        makeTask({
+          taskId: 'site-render-date-1',
+          status: 'running',
+          message: 'Generating date archive pages',
+          groupId: 'site-render-1',
+          groupName: 'Render Site',
+        }),
+      ],
+    });
+
+    render(<TaskPopup />);
+
+    fireEvent.click(screen.getByRole('button', { name: /running/i }));
+
+    const groupToggle = screen.getByRole('button', { name: /Render Site \(2\)/i });
+    expect(groupToggle).toBeInTheDocument();
+    expect(screen.getByText('Generating root pages')).toBeInTheDocument();
+    expect(screen.getByText('Generating date archive pages')).toBeInTheDocument();
+
+    fireEvent.click(groupToggle);
+
+    expect(screen.queryByText('Generating root pages')).not.toBeInTheDocument();
+    expect(screen.queryByText('Generating date archive pages')).not.toBeInTheDocument();
+  });
+
+  it('continues to render ungrouped tasks directly', () => {
+    useAppStore.setState({
+      tasks: [
+        makeTask({ taskId: 'ungrouped-1', status: 'running', message: 'Standalone task' }),
+      ],
+    });
+
+    render(<TaskPopup />);
+
+    fireEvent.click(screen.getByRole('button', { name: /running/i }));
+
+    expect(screen.getByText('Standalone task')).toBeInTheDocument();
+  });
+});