adiuva/AI_REFACTOR_PLAN.md

# AI Refactor Plan — Adiuva Electron App

> **Objective:** Transform the Electron app into a hybrid-first multi-agent client. The user controls where data is stored (local / cloud / sync), which AI provider to use (BYOK multi-provider), and which automations to run — either custom batch agents built with the LLM-powered Batch Builder, or pre-built plugins from the marketplace. All data access is opt-in, transparent, and auditable.
>
> **Backend:** Lives in a separate repository. See `../adiuva-api/BACKEND_PLAN.md` for the API contract and backend implementation guide.
>
> **Protocol:** Execute steps sequentially. Each step is atomic and committable. Mark `[x]` when done.

---

## Phase 0 — API Contracts & Types

### Step 0.1 — Define backend API contract types
- [ ] Create `src/shared/api-types.ts` with all interfaces the Electron app needs to communicate with the backend:
  - `ExecutionPlan`, `PlanStep`, `PlanAction` (action types: `create_record`, `update_record`, `delete_record`, `index_document`, `send_notification`, `call_agent`)
  - `ChatRequest` (message, context, execution_mode: `'direct'` | `'plan'`)
  - `ChatResponse` (response, actions)
  - `ChatContext` (user_profile, relevant_documents, recent_tasks, conversation_history)
  - `AgentManifest` (name, description, permissions, schedule)
  - `PermissionGrant` (plugin, permission type, resource path, granted_at)
  - `BackupMetadata` (version, timestamp, checksum, chunk_count)
  - `BillingTier` enum (`free`, `pro`, `power`, `team`)
  - `AuthTokens` (access_token, refresh_token, expires_at)
  - `UserProfile` (id, email, tier)
- [ ] Create `src/shared/batch-types.ts` with all types for the batch builder and storage layer:
  - `StorageTarget` — `'local'` | `'cloud'` | `'sync'` | `'none'`
  - `ConnectorType` — `'imap'` | `'filesystem'` | `'calendar'` | `'api'` | `'gmail'` | `'gdrive'` | `'outlook'`
  - `BatchActionType` — `'create_record'` | `'update_record'` | `'delete_record'` | `'index_document'` | `'send_notification'` | `'call_agent'`
  - `BatchSource` — `{ connector: ConnectorType, config: Record<string, unknown> }`
  - `BatchTrigger` — `{ type: 'cron' | 'event', schedule?: string, timezone?: string }`
  - `BatchAnalysis` — `{ prompt: string, model_override?: string, output_schema?: object }`
  - `BatchAction` — `{ type: BatchActionType, table?: string, mapping?: Record<string, string> }`
  - `BatchStorage` — `{ records: StorageTarget, vectors: StorageTarget, raw_data: StorageTarget }`
  - `BatchConfig` — full config object: `id`, `name`, `description`, `enabled`, `source`, `trigger`, `analysis`, `actions`, `storage`, `permissions`
  - `BatchStatus` — `'idle'` | `'running'` | `'error'` | `'disabled'`
  - `BatchRunResult` — `{ batchId, runAt, status, itemsProcessed, errors }`
  - `PluginListing` — `{ id, name, description, author, version, rating, installs, category, permissions, price }`
  - `InstalledPlugin` — `{ listing: PluginListing, installedAt, enabled, storageConfig: BatchStorage }`
  - `DataSourceInfo` — `{ type: ConnectorType, label, recordCount, sizeBytes, storageTarget: StorageTarget }`
  - `StorageStats` — `{ localUsedBytes, cloudUsedBytes, cloudLimitBytes, sources: DataSourceInfo[] }`
- [ ] Update `tsconfig.json` paths if needed to include `src/shared/`
- **Files:** `src/shared/api-types.ts`, `src/shared/batch-types.ts`, `tsconfig.json`
- **Outcome:** Type-safe contracts for all backend communication and the batch/storage subsystem. Backend repo mirrors these as Pydantic schemas.

---

## Phase 1 — LiteLLM Multi-Provider Client

### Step 1.1 — Create unified LLM client wrapper
- [ ] Create `src/main/llm/litellm-client.ts`:
  - `LiteLLMClient` class with unified interface:
    - `complete(messages: Message[], options?: CompletionOptions): Promise<CompletionResponse>`
    - `stream(messages: Message[], options?: CompletionOptions): AsyncGenerator<string>`
    - `embed(text: string): Promise<number[]>`
  - `CompletionOptions`: model override, temperature, max_tokens, tools
  - Provider-agnostic: internally maps to the correct provider SDK
  - Fallback chain: tries primary provider, on failure tries secondary, logs each attempt
  - Timeout handling: per-provider configurable timeouts
- [ ] Create `src/main/llm/providers.ts`:
  - `ProviderConfig` interface: name, apiKey, model, endpoint (for Ollama), timeout, isLocal
  - `ProviderRegistry`: manages configured providers, persists to electron-store
  - `getActiveProvider()`, `setActiveProvider(name)`, `addProvider(config)`, `removeProvider(name)`
  - `getFallbackChain(): ProviderConfig[]`
  - Supported providers: OpenAI, Anthropic, Google (Gemini), Mistral, Groq, Ollama (local)
- [ ] Create `src/main/llm/embeddings.ts` (refactored):
  - Support multiple embedding providers (OpenAI text-embedding-3-small, local ONNX with all-MiniLM-L6-v2)
  - Auto-select: use local ONNX if available, fall back to API
  - Same `embedText(text): Promise<number[]>` interface
- **Files:** `src/main/llm/litellm-client.ts`, `src/main/llm/providers.ts`, `src/main/llm/embeddings.ts`
- **Outcome:** Single LLM interface that all local components use. Supports 6+ providers with fallback.

### Step 1.2 — Migrate existing AI code to use new LLM client
- [ ] Update `src/main/ai/orchestrator.ts`:
  - Replace direct `getLLM()` calls with `LiteLLMClient.complete()` / `LiteLLMClient.stream()`
  - Keep local orchestration working with the new client (backend delegation comes in Phase 3)
- [ ] Update `src/main/ai/llm.ts`:
  - Deprecate. Redirect `getLLM()` to instantiate via `LiteLLMClient` as a thin compatibility shim
- [ ] Update `src/main/ai/embeddings.ts` to delegate to `src/main/llm/embeddings.ts`
- [ ] Update `src/main/ai/token.ts`:
  - Add `listStoredProviders(): Promise<string[]>` to enumerate which providers have tokens
- [ ] Ensure all existing AI features (chat, daily brief, tool calling) continue to work
- **Files:** `src/main/ai/orchestrator.ts`, `src/main/ai/llm.ts`, `src/main/ai/embeddings.ts`, `src/main/ai/token.ts`
- **Outcome:** Existing AI features work identically but go through the new unified LLM client.

---

## Phase 2 — Local Plugin System & Batch Agents

### Step 2.1 — Create plugin manifest system and permission manager
- [ ] Create `src/main/permissions/manifest-validator.ts`:
  - `PluginManifest` interface: `name`, `description`, `version`, `permissions: PermissionRequest[]`, `schedule?: string` (cron), `entryPoint: string`
  - `PermissionRequest`: `type` (read_folder, read_email, read_calendar, read_browser_history), `resource?: string` (path, account), `reason: string`
  - `validateManifest(manifest): ValidationResult` — validates structure, checks for dangerous permissions
- [ ] Create `src/main/permissions/permission-manager.ts`:
  - `PermissionManager` class (singleton):
    - `grantPermission(pluginName, permission): void` — persists to SQLite
    - `revokePermission(pluginName, permission): void`
    - `checkPermission(pluginName, permission): boolean`
    - `getPluginPermissions(pluginName): PermissionGrant[]`
    - `getAllGrants(): PermissionGrant[]`
    - `logAccess(pluginName, permission, resource, timestamp): void` — activity log
    - `getActivityLog(pluginName?, limit?): ActivityLogEntry[]`
  - Permission grants stored in a new `plugin_permissions` SQLite table
  - Activity log stored in a new `plugin_activity_log` SQLite table
- [ ] Add `plugin_permissions` and `plugin_activity_log` tables to `src/main/db/schema.ts`
- [ ] Generate and apply migration
- **Files:** `src/main/permissions/manifest-validator.ts`, `src/main/permissions/permission-manager.ts`, `src/main/db/schema.ts`, `src/main/db/migrations/`
- **Outcome:** Granular, opt-in permission system for plugins. Every access is logged.

### Step 2.2 — Create worker pool and batch runner
- [ ] Create `src/main/workers/worker-pool.ts`:
  - `WorkerPool` class:
    - Manages a pool of Node.js `worker_threads`
    - `runPlugin(manifest, context): Promise<PluginResult>` — spawns or reuses a worker, sends manifest + context, receives result
    - Worker lifecycle: create, send message, receive result, terminate on timeout
    - Max concurrent workers: configurable (default 4)
    - Error isolation: worker crash doesn't affect main process
- [ ] Create `src/main/workers/batch-runner.ts`:
  - `BatchRunner` class:
    - `registerPlugin(manifest): void` — validates manifest, stores in registry
    - `startScheduler(): void` — cron-based scheduler using `node-cron` or simple setInterval
    - `runPlugin(name, triggerContext?): Promise<PluginResult>` — manual trigger
    - `stopAll(): void` — graceful shutdown of all scheduled plugins
    - Scheduler checks permissions before each run; skips if revoked
    - Results logged to activity log
- [ ] Create `src/main/workers/plugin-worker.ts`:
  - Worker thread entry point
  - Receives plugin config + context via `parentPort.on('message')`
  - Dynamically imports the plugin entry point
  - Executes `run(context)` with sandboxed access (only permitted resources)
  - Posts result back via `parentPort.postMessage()`
- **Files:** `src/main/workers/worker-pool.ts`, `src/main/workers/batch-runner.ts`, `src/main/workers/plugin-worker.ts`
- **Outcome:** Isolated plugin execution environment with scheduling, permissions enforcement, and error isolation.

### Step 2.3 — Implement batch agent plugins
- [ ] Create `src/plugins/email-scanner.ts`:
  - Manifest: requires `read_email` permission
  - Connects to IMAP via `imapflow` (account configured in settings)
  - Scans for new emails since last run
  - Uses `LiteLLMClient` to classify each email (has actionable task? extract title, priority, description)
  - Returns extracted task metadata (never raw email content) for execution via backend or local playbook
- [ ] Create `src/plugins/file-watcher.ts`:
  - Manifest: requires `read_folder` permission for each watched path
  - Uses `chokidar` to watch approved directories
  - On new/modified file: reads content, generates embedding, upserts into vector store
  - Supports: .txt, .md, .pdf (text extraction), .docx (basic extraction)
- [ ] Create `src/plugins/calendar-sync.ts`:
  - Manifest: requires `read_calendar` permission
  - Parses ICS files or connects to CalDAV endpoint
  - Detects scheduling conflicts
  - Suggests reorganizations via LLM analysis
  - Returns calendar events + conflict reports
- [ ] Create `src/plugins/browser-agent.ts`:
  - Manifest: requires `read_browser_history` permission (explicit opt-in)
  - Reads browser bookmarks and history from known browser paths (Chrome, Firefox, Edge)
  - Indexes relevant entries into vector store
  - Privacy-first: only indexes URLs and titles, not page content
- **Files:** `src/plugins/email-scanner.ts`, `src/plugins/file-watcher.ts`, `src/plugins/calendar-sync.ts`, `src/plugins/browser-agent.ts`
- **Outcome:** Four local batch agents running as isolated worker threads, using LiteLLM for analysis.

---

## Phase 3 — Backend Integration

### Step 3.1 — Create backend HTTP/WebSocket client
- [ ] Create `src/main/api/backend-client.ts`:
  - `BackendClient` class:
    - `baseUrl` configurable (default: production cloud URL, overridable for dev)
    - `setAuthToken(jwt: string): void`
    - `chat(request: ChatRequest): Promise<ChatResponse>` — POST /api/v1/chat
    - `chatStream(request: ChatRequest): AsyncGenerator<string>` — WebSocket /api/v1/chat/stream
    - `getPlaybooks(): Promise<ExecutionPlan[]>` — GET /api/v1/plans/playbook
    - `uploadBackup(blob: Buffer, metadata: BackupMetadata): Promise<void>` — PUT /api/v1/backup
    - `downloadBackup(): Promise<{ blob: Buffer, metadata: BackupMetadata }>` — GET /api/v1/backup
    - Automatic retry with exponential backoff (max 3 attempts)
    - Offline detection: returns cached playbook responses when offline
  - `isOnline(): boolean` — connectivity check
- [ ] Create `src/main/api/plan-runner.ts`:
  - `PlanRunner` class:
    - `execute(plan: ExecutionPlan): Promise<PlanResult>` — executes plan steps locally
    - Step handlers: `create_record` (inserts into SQLite), `update_record`, `delete_record`, `index_document` (upserts into vector store), `send_notification` (Electron notification API)
    - Each step logs to activity log
    - Supports `data_from_step` references (pipeline execution)
    - Validates plan structure before execution
- **Files:** `src/main/api/backend-client.ts`, `src/main/api/plan-runner.ts`
- **Outcome:** Electron can communicate with the cloud backend and execute returned plans locally.

### Step 3.2 — Refactor orchestrator to delegate to backend
- [ ] Update `src/main/ai/orchestrator.ts`:
  - When online: forward chat requests to backend via `BackendClient.chatStream()`
  - Build `ChatRequest` from local context: query SQLite for user profile, relevant documents (from vector store), recent tasks, conversation history
  - Stream backend response tokens to renderer via existing `ai:stream` IPC channel
  - Execute any returned actions via `PlanRunner`
  - When offline: fall back to local orchestration (existing LangGraph pipeline) with degraded capabilities
  - Remove direct agent logic (project agent, knowledge agent, general agent tool definitions) — these now live on the backend
  - Keep `buildProjectContext()` and `buildGlobalContext()` as context builders for the request payload
- [ ] Update `src/main/router/index.ts` `ai` sub-router:
  - `chat` mutation: call refactored orchestrator (which now delegates to backend)
  - Add `getPlaybooks` query: fetches cached playbooks
  - Keep `dailyBrief` mutation: sends daily brief request to backend
- [ ] Add IPC handler for plan execution results
- **Files:** `src/main/ai/orchestrator.ts`, `src/main/router/index.ts`, `src/main/ipc.ts`
- **Outcome:** Chat intelligence lives on the backend; Electron is the execution layer.

### Step 3.3 — Implement Shared Memory (three-tier local memory)
- [ ] Create `src/main/database/shared-memory.ts`:
  - **Short-term memory**: In-memory conversation buffer
    - `ConversationBuffer` class: stores last N messages per session
    - `addMessage(sessionId, role, content)`, `getHistory(sessionId, limit?) -> Message[]`
    - Cleared on session end
  - **Long-term KV store**: SQLite-backed key-value store
    - New `agent_memory` table: `id`, `namespace` (agent name), `key`, `value` (JSON text), `updated_at`
    - `AgentMemoryStore` class: `get(namespace, key)`, `set(namespace, key, value)`, `delete(namespace, key)`, `listKeys(namespace)`
    - Used by agents to persist learned facts, user preferences
  - **Vector store**: Already exists (LanceDB). Enhance with:
    - Multi-collection support: separate tables for notes, emails, files, calendar
    - `searchByCollection(collection, query, limit) -> SearchResult[]`
- [ ] Add `agent_memory` table to `src/main/db/schema.ts`
- [ ] Generate migration
- **Files:** `src/main/database/shared-memory.ts`, `src/main/db/schema.ts`, `src/main/db/migrations/`
- **Outcome:** Three-tier memory system supporting short-term conversation, long-term agent facts, and semantic search.

---

## Phase 4 — Security: E2E Backup & Offline Mode

### Step 4.1 — Implement E2E encrypted backup
- [ ] Create `src/main/backup/e2e-crypto.ts`:
  - `generatePassphrase(): string` — BIP39-compatible 12-word recovery phrase
  - `deriveKey(passphrase: string, salt: Buffer): Promise<Buffer>` — Argon2id key derivation (time cost 3, memory 64MB, parallelism 1)
  - `encrypt(data: Buffer, key: Buffer): { ciphertext: Buffer, iv: Buffer, authTag: Buffer }` — AES-256-GCM
  - `decrypt(ciphertext: Buffer, key: Buffer, iv: Buffer, authTag: Buffer): Buffer`
  - Uses `node:crypto` for AES and `argon2` npm package for key derivation
- [ ] Create `src/main/backup/backup-manager.ts`:
  - `BackupManager` class:
    - `createBackup(passphrase: string): Promise<BackupBlob>` — Exports SQLite DB, encrypts, returns blob + metadata
    - `restoreBackup(blob: Buffer, passphrase: string): Promise<void>` — Decrypts blob, replaces local DB, re-initializes
    - `uploadBackup(passphrase: string): Promise<void>` — Creates backup, uploads via `BackendClient`
    - `downloadAndRestore(passphrase: string): Promise<void>` — Downloads from backend, decrypts, restores
    - Incremental backup: chunks DB into segments, encrypts each separately, tracks content hashes to skip unchanged chunks
    - Metadata header: version, timestamp, checksum (SHA-256 of plaintext), chunk count
- **Files:** `src/main/backup/e2e-crypto.ts`, `src/main/backup/backup-manager.ts`
- **Outcome:** User data never leaves the device unencrypted. Backend stores only opaque blobs.

### Step 4.2 — Implement offline sync queue
- [ ] Create `src/main/backup/sync-queue.ts`:
  - `SyncQueue` class:
    - `enqueue(action: QueuedAction): void` — Adds action to persistent queue (SQLite table `sync_queue`)
    - `processQueue(): Promise<void>` — Processes queued actions in FIFO order when online
    - `getQueueSize(): number`
    - `clearQueue(): void`
    - Conflict resolution: last-write-wins with timestamps
  - New `sync_queue` table: `id`, `action_type`, `payload` (JSON), `created_at`, `status` (pending/processing/failed), `retry_count`, `last_error`
  - Auto-drain: watches connectivity, starts processing when online
  - Failed actions: retry up to 3 times with exponential backoff, then mark as `failed` for user review
- [ ] Add `sync_queue` table to schema
- [ ] Integrate with `BackendClient`: when offline, chat/backup calls enqueue instead of failing
- **Files:** `src/main/backup/sync-queue.ts`, `src/main/db/schema.ts`, `src/main/api/backend-client.ts`
- **Outcome:** App works offline; queued actions sync automatically when connectivity returns.

---

## Phase 5 — Auth Integration & Database Encryption

### Step 5.1 — Integrate auth into Electron app
- [ ] Create `src/main/auth/auth-manager.ts`:
  - `AuthManager` class:
    - `login(email, password): Promise<void>` — Calls backend POST /api/v1/auth/login, stores JWT in secure storage (via token.ts)
    - `register(email, password): Promise<void>` — Calls POST /api/v1/auth/register
    - `logout(): void` — Clears stored JWT
    - `getToken(): string | null` — Returns current JWT
    - `refreshToken(): Promise<void>` — Auto-refresh before expiry
    - `isAuthenticated(): boolean`
    - `getCurrentTier(): BillingTier`
  - Auto-refresh: checks token expiry every 5 minutes, refreshes if < 10 minutes remaining
- [ ] Add tRPC procedures: `auth.login`, `auth.register`, `auth.logout`, `auth.status`, `auth.tier`
- [ ] Wire `BackendClient` to use `AuthManager.getToken()` for all requests
- **Files:** `src/main/auth/auth-manager.ts`, `src/main/router/index.ts`, `src/main/api/backend-client.ts`
- **Outcome:** Electron app has full auth flow; backend requests are authenticated.

### Step 5.2 — Migrate from better-sqlite3 to SQLCipher
- [ ] Add `@journeyapps/sqlcipher` to dependencies (replaces `better-sqlite3`)
- [ ] Update `src/main/db/index.ts`:
  - Replace `better-sqlite3` import with `@journeyapps/sqlcipher`
  - On first launch: derive DB key from OS keychain or prompt user
  - `initDb(password)`: opens DB with `PRAGMA key = 'password'`
  - Migration path for existing unencrypted DBs: detect → export → create encrypted → import → delete old
  - WAL mode still enabled after keying
- [ ] Update `src/main/index.ts`: pass password to `initDb()`
- [ ] Test that all existing Drizzle operations work with SQLCipher
- **Files:** `package.json`, `src/main/db/index.ts`, `src/main/index.ts`
- **Outcome:** All local data encrypted at rest with SQLCipher.

---

## Phase 6 — Renderer UI Updates

> **Navigation model:** The app has a sidebar with top-level routes matching the pages below. Each page is a full-screen view. Shared hooks live in `src/renderer/hooks/`. All data access goes through tRPC procedures — no direct IPC calls from components.

### Step 6.1 — Restructure app shell and routing
- [ ] Update `src/renderer/App.tsx`:
  - Define top-level routes: `/chat`, `/batch-builder`, `/plugins`, `/data-manager`, `/settings`, `/activity`
  - Add sidebar navigation with icons and labels for each route
  - Persist last active route in electron-store
- [ ] Create `src/renderer/hooks/useProvider.ts`:
  - `useProvider()` — returns active provider config, `setProvider()`, `testProvider()`, list of configured providers
  - Backed by tRPC `provider.*` procedures (to be added in Phase 1)
- [ ] Create `src/renderer/hooks/useStorage.ts`:
  - `useStorage()` — returns `StorageStats`, `setStorageTarget(source, target)`, `migrateData(source, from, to)`
  - Backed by tRPC `storage.*` procedures (to be added in Phase 2)
- **Files:** `src/renderer/App.tsx`, `src/renderer/hooks/useProvider.ts`, `src/renderer/hooks/useStorage.ts`
- **Outcome:** App shell with all top-level routes and shared data hooks.

### Step 6.2 — ChatPage with context panel
- [ ] Create `src/renderer/pages/ChatPage.tsx`:
  - Two-column layout: chat area (left/main) + collapsible `ContextPanel` (right)
  - Wraps `ChatWindow` and `ContextPanel` components
  - Online/offline status bar at top
- [ ] Create `src/renderer/components/chat/ChatWindow.tsx`:
  - Message list rendering `MessageBubble` for each entry
  - Input bar with send button and attachment support
  - Handles streaming tokens from `useChat` hook
  - Plan approval UI inline: expandable plan steps with approve/reject per-step
  - Error states: offline, auth expired, rate limited, server error (distinct UI for each)
- [ ] Create `src/renderer/components/chat/MessageBubble.tsx`:
  - Renders user / assistant / system messages
  - Supports markdown rendering for assistant messages
  - Shows tool-call indicators when the agent uses a tool
  - Timestamp and copy-to-clipboard action
- [ ] Create `src/renderer/components/chat/ContextPanel.tsx`:
  - Shows what context the agent used for the last response: matched documents, recent tasks, memory entries
  - Each context item links to its source (note, file, batch result)
  - Collapsible, persists open/closed state
- [ ] Create `src/renderer/hooks/useChat.ts`:
  - `useChat(sessionId)` — message list, `sendMessage()`, streaming state, connection mode (`'backend'` | `'local'`)
  - Automatically falls back to local orchestrator when offline
  - Exposes `approveStep(stepId)` / `rejectStep(stepId)` for plan execution
- **Files:** `src/renderer/pages/ChatPage.tsx`, `src/renderer/components/chat/ChatWindow.tsx`, `src/renderer/components/chat/MessageBubble.tsx`, `src/renderer/components/chat/ContextPanel.tsx`, `src/renderer/hooks/useChat.ts`
- **Outcome:** Full chat UI with context transparency, plan approval, and seamless online/offline fallback.

### Step 6.3 — BatchBuilderPage
- [ ] Create `src/renderer/pages/BatchBuilderPage.tsx`:
  - Two views: **Active Batches** list (default) and **Create New Batch** wizard
  - Active list renders `BatchCard` for each active batch config
  - "Create" button opens the wizard
- [ ] Create `src/renderer/components/batch-builder/NaturalLanguageInput.tsx`:
  - Textarea where the user describes the batch in plain language
  - "Generate" button calls `useBatchBuilder().generate(description)`
  - Loading skeleton while the LLM generates the config
- [ ] Create `src/renderer/components/batch-builder/ConfigPreview.tsx`:
  - Shows the generated `BatchConfig` as an editable form (not raw JSON)
  - Sections: Source, Trigger, Analysis, Actions, Storage — each collapsible
  - Inline editing for every field (prompt textarea, cron expression with human-readable label, mapping table)
  - "Edit raw JSON" toggle for power users
- [ ] Create `src/renderer/components/batch-builder/ConnectorPicker.tsx`:
  - Dropdown of available connector types (IMAP, Filesystem, Gmail, GDrive, Outlook, Calendar, Generic API)
  - When selected, shows connector-specific config fields (e.g. IMAP: host, folder, filter_from; Filesystem: path picker)
  - OAuth connectors show "Connect account" button that opens the OAuth flow
- [ ] Create `src/renderer/components/batch-builder/StoragePicker.tsx`:
  - Three-way toggle per storage dimension: **Local** / **Cloud** / **Sync** / **None**
  - Dimensions: Records, Vectors, Raw data
  - Shows storage impact estimate per option
  - Disabled options grayed out with tier tooltip if current tier doesn't support cloud
- [ ] Create `src/renderer/components/batch-builder/SchedulePicker.tsx`:
  - Mode toggle: **Cron** (with human-readable label, e.g. "Every day at 08:00") / **Event** (on new data from connector)
  - Timezone selector (defaults to system timezone)
  - Visual cron builder for non-technical users (with raw cron input fallback)
- [ ] Create `src/renderer/components/batch-builder/BatchCard.tsx`:
  - Shows batch name, connector icon, last run time, next run time, status badge (`idle` / `running` / `error` / `disabled`)
  - Actions: Run now, Edit, Disable/Enable, Delete
  - Expandable to show last run summary (items processed, errors)
- [ ] Create `src/renderer/components/batch-builder/BatchTestRunner.tsx`:
  - "Dry Run" panel: picks one real item from the source, runs the full analysis pipeline, shows output without saving
  - Shows LLM output, action mapping preview, what would be stored and where
  - Pass/Fail indicator with detailed error on failure
- [ ] Create `src/renderer/hooks/useBatchBuilder.ts`:
  - `useBatchBuilder()` — `generate(description): Promise<BatchConfig>`, `validate(config)`, `save(config)`, `activate(id)`, `deactivate(id)`, `runNow(id)`, `dryRun(id)`, `delete(id)`, list of saved configs with live status
  - Backed by tRPC `batch.*` procedures
- **Files:** `src/renderer/pages/BatchBuilderPage.tsx`, `src/renderer/components/batch-builder/{NaturalLanguageInput,ConfigPreview,ConnectorPicker,StoragePicker,SchedulePicker,BatchCard,BatchTestRunner}.tsx`, `src/renderer/hooks/useBatchBuilder.ts`
- **Outcome:** Full Batch Builder UI — users can describe a batch in natural language, review/edit the generated config, dry-run it, and activate it with a single flow.

### Step 6.4 — PluginStorePage
- [ ] Create `src/renderer/pages/PluginStorePage.tsx`:
  - Two tabs: **Marketplace** (browse available plugins) and **Installed** (manage installed plugins)
  - Marketplace: search bar, category filter chips, grid of plugin cards sorted by rating/installs
  - Installed: list of `InstalledPlugin` entries with enable/disable toggles and settings links
- [ ] Create plugin card component (inline or shared `common/`):
  - Shows name, author, description, rating (stars), install count, category badge, price/free badge
  - "Install" button → triggers permission request dialog → installs plugin
  - "Settings" button (installed) → opens plugin-specific config drawer
- [ ] Plugin install flow:
  - On install click: fetch plugin manifest from backend
  - Show `PermissionDialog` with the permissions the plugin requires
  - On approve: call tRPC `plugins.install(id)`, download and register the plugin worker
  - Show `StoragePicker` for the plugin's data (what goes local/cloud/sync)
- **Files:** `src/renderer/pages/PluginStorePage.tsx`
- **Outcome:** Users can discover and install pre-built plugins from the marketplace with full permission visibility.

### Step 6.5 — DataManagerPage
- [ ] Create `src/renderer/pages/DataManagerPage.tsx`:
  - Top section: `StorageOverview` dashboard
  - Below: list of `DataSourceCard` for each active data source (one card per connector/plugin)
  - "Migrate" button opens `MigrationWizard`
- [ ] Create `src/renderer/components/data-manager/StorageOverview.tsx`:
  - Visual breakdown: local disk used vs. cloud used vs. cloud limit
  - Per-category breakdown (emails, files, notes, calendar, vectors)
  - Tier upgrade CTA if approaching cloud limit
- [ ] Create `src/renderer/components/data-manager/DataSourceCard.tsx`:
  - Card per data source (e.g. "Gmail Scanner", "Documenti/Fatture watcher")
  - Shows record count, size, last sync time
  - Inline `StoragePicker` toggle for that source (where its data lives)
  - "Clear local cache" / "Delete all data" actions with confirmation
- [ ] Create `src/renderer/components/data-manager/MigrationWizard.tsx`:
  - Step wizard: select source → select direction (local → cloud or cloud → local) → confirm
  - Shows estimated data size and time
  - Progress indicator during migration
  - Rolls back on error
- **Files:** `src/renderer/pages/DataManagerPage.tsx`, `src/renderer/components/data-manager/{StorageOverview,DataSourceCard,MigrationWizard}.tsx`
- **Outcome:** Users have full visibility and control over where every piece of their data lives.

### Step 6.6 — ActivityLogPage
- [ ] Create `src/renderer/pages/ActivityLogPage.tsx`:
  - Full-page filterable table of all batch/plugin activity entries
  - Columns: timestamp, source (batch name / plugin name), action type, data accessed, storage destination, status
  - Filters: source, date range, action type, status (success/error)
  - Row expand: shows full detail — which records were created/updated, which files were read, LLM calls made
  - Export as CSV button
- **Files:** `src/renderer/pages/ActivityLogPage.tsx`
- **Outcome:** Complete transparency log so users can audit exactly what each agent did and when.

### Step 6.7 — SettingsPage (multi-provider, auth, backup, embeddings)
- [ ] Create `src/renderer/pages/SettingsPage.tsx` with tabbed sections:
  - **AI Providers** tab:
    - List of configured providers with status badge (active / inactive / error)
    - Add provider form: name dropdown (OpenAI, Anthropic, Google, Mistral, Groq, Ollama), API key input, model selection, endpoint (for Ollama)
    - Set primary provider and fallback chain
    - Test connection button per provider
    - Separate "Embeddings provider" section: provider + model for embeddings (OpenAI, Cohere, Voyage, Mistral Embed)
    - Info callout: "Text sent to the embeddings provider to generate vectors — make sure you trust this provider with your data"
  - **Account & Billing** tab:
    - Login/register form (when not authenticated)
    - Current tier display with feature list and upgrade CTA
    - Usage indicators (batch count, cloud storage used)
    - Logout button
  - **Backup & Sync** tab:
    - Recovery passphrase: generate new / view existing (masked, reveal on click)
    - Manual backup trigger with last backup timestamp
    - Auto-backup schedule toggle + interval picker
    - Backup history table (timestamp, size, restore button)
  - **Permissions** tab:
    - Table of all active permission grants (plugin/batch, permission type, resource, granted date)
    - Revoke button per grant
    - Links to ActivityLogPage for per-source audit
- [ ] Create `src/renderer/components/common/ProviderSelector.tsx`:
  - Reusable dropdown that lists configured LLM providers
  - Used in BatchBuilder (model_override field) and Settings
- [ ] Create `src/renderer/components/common/PermissionDialog.tsx`:
  - Modal triggered when a plugin/batch requests new permissions
  - Lists each requested permission with its reason and resource path
  - Per-permission approve/deny toggles (deny is default)
  - Shows plugin/batch manifest info (name, description, version)
  - "Approve selected" confirms; "Deny all" closes without granting
- **Files:** `src/renderer/pages/SettingsPage.tsx`, `src/renderer/components/common/PermissionDialog.tsx`, `src/renderer/components/common/ProviderSelector.tsx`
- **Outcome:** Centralised settings covering providers, embeddings, auth, backup, and permissions.

---

## Phase 7 — Cleanup & Hardening

### Step 7.1 — Remove deprecated AI code
- [ ] Delete `src/main/ai/copilot.ts` (Copilot SDK replaced by LiteLLM)
- [ ] Delete `src/main/ai/chat-copilot.ts` (LangChain adapter no longer needed)
- [ ] Delete or archive `src/main/ai/llm.ts` (replaced by `src/main/llm/litellm-client.ts`)
- [ ] Remove `@github/copilot-sdk`, `@langchain/langgraph` from dependencies (if unused)
- [ ] Clean up `src/main/ai/provider.ts`: simplify to delegate to `src/main/llm/providers.ts`
- [ ] Remove `currentSender` module-level mutable state from orchestrator (proper context passing)
- [ ] Update `src/main/index.ts` startup: remove `import './ai/copilot'`, add `BatchRunner.startScheduler()`, add `AuthManager` init
- **Files:** Multiple files under `src/main/ai/`, `package.json`, `src/main/index.ts`
- **Outcome:** No dead code; clean, maintainable codebase.

### Step 7.2 — Add error handling and logging
- [ ] Implement structured logging in main process:
  - Log levels: debug, info, warn, error
  - Log destinations: console (dev), file (production, rotated)
  - Correlation IDs for request tracing across IPC → backend → response
- [ ] Add error boundaries in renderer:
  - Per-route error boundaries
  - AI chat error boundary (graceful degradation)
  - Plugin error boundary (shows which plugin failed)
- **Files:** `src/main/utils/logger.ts` (new), `src/renderer/components/ErrorBoundary.tsx` (new)
- **Outcome:** Production-ready error handling and observability.

### Step 7.3 — Electron integration tests
- [ ] Test BackendClient with mocked HTTP responses
- [ ] Test PlanRunner with sample execution plans
- [ ] Test SyncQueue offline → online transition
- [ ] Test BackupManager encrypt → decrypt round-trip
- [ ] Test PermissionManager grant → check → revoke cycle
- **Files:** `src/main/__tests__/` (new test directory)
- **Outcome:** Confidence that all Electron-side components work correctly.

---

## New Dependencies (package.json)

| Package | Purpose |
|---|---|
| `@journeyapps/sqlcipher` | Encrypted SQLite (replaces `better-sqlite3`) |
| `argon2` | Key derivation for E2E backup |
| `node-cron` | Batch agent scheduling |
| `chokidar` | File watching (FileWatcher plugin) |
| `imapflow` | IMAP client (IMAP connector) |
| `googleapis` | Gmail + GDrive OAuth connectors |
| `lancedb` | Local vector store |
| `onnxruntime-node` | Local embeddings (optional, future) |

---

## Execution Notes

- **Each step is independently committable** and produces working code.
- **Phases 1-2** (LLM client + plugins) are independent of the backend — can start immediately.
- **Phase 3** (backend integration) requires the backend repo to have the `/api/v1/chat` endpoint ready.
- **Phase 5.2** (SQLCipher) is intentionally late to avoid encryption overhead during active schema changes.
- **The existing app continues to work** throughout the migration. Local orchestration is preserved until backend is ready (Step 3.2).
- **One step at a time.** Implement one numbered step per session. When the step is fully done, mark all its checkboxes as `[x]` in this file and commit with message `step N complete: <outcome line>`.