docs: add n8n api integration to roadmap priority

GEMINI.md

@@ -7,21 +7,37 @@ Fasto is a commercial team management system built with React (Vite) on the fron
 We have transitioned from a mock-based prototype to a **secure, multi-tenant production architecture**:
 
 - **Multi-Tenancy & Data Isolation:** All backend routes (Users, Teams, Attendances) now strictly enforce `tenant_id` checks. It is technically impossible for one organization to query data from another.
+- **God Mode (Tenant Impersonation):** Super Admins can securely impersonate Tenant Admins via a specialized, temporary JWT (`/api/impersonate/:tenantId`). This allows seamless cross-domain support without storing passwords, while strictly maintaining state isolation through forced React reloads and locking mechanisms.
+- **Dynamic Funnel Customization:** 
+  - Funnel stages are no longer hardcoded ENUMs. Each tenant can create multiple dynamic funnels via the `funnels` and `funnel_stages` tables.
+  - Managers can assign specific Teams to specific Funnels.
+  - The Dashboard, User Detail, and Attendance Detail pages now dynamically map and color-code stages based on the active team's assigned funnel.
+- **Real-Time Notification System:** 
+  - Built a persistent notification tray (`/api/notifications`) with real-time polling (10s intervals) and a hidden HTML5 `<audio>` player for cross-browser sound playback.
+  - Automated Triggers: Super Admins are notified of new organizations; Tenant Admins/Managers are notified of new user setups; Users are notified of team assignment changes.
 - **Role-Based Access Control (RBAC):**
   - **Super Admin:** Global management of all tenants and users (via the hidden `system` tenant).
   - **Admin/Manager:** Full control over members and teams within their specific organization.
   - **Agent:** Restricted access. Can only view their own performance metrics and historical attendances.
-- **Premium "Onyx & Gold" UI/UX:** Completely redesigned the dark mode using a true neutral Charcoal (Zinc) palette, high-contrast text, and brand Yellow accents.
-- **Dynamic KPI Dashboard:** Implemented true period-over-period trend calculations for Leads, Quality Scores, and Response Times.
-- **Secure File Uploads:** Profile avatars are now securely uploaded using `multer` with strict mimetype validation (JPG/PNG/WEBP), 2MB size limits, and UUID generation to prevent path traversal.
-- **Enhanced Security Flows:** 
-  - User routing uses secure `slugs` instead of exposing raw UUIDs.
-  - All password reset and setup tokens strictly expire in 15 minutes and are destroyed upon use.
-  - Separated the "Reset Password" and "Setup Account" (for new admins) flows for better UX.
+- **Enhanced UI/UX:** 
+  - Premium "Onyx & Gold" True Black dark mode.
+  - Fully collapsible interactive sidebar with memory (`localStorage`).
+  - Action buttons across all data tables are permanently visible for faster discoverability (removed hover requirements).
+  - Loading states embedded directly into action buttons to prevent double-submissions.
+- **Secure File Uploads:** Profile avatars use `multer` with strict mimetype validation (JPG/PNG/WEBP), 2MB size limits, and UUID generation.
+
+## 📌 Roadmap / To-Do
+- [ ] **n8n / External API Integration (Priority 1):** 
+  - Create an `api_keys` table to allow generating persistent, secure API keys for each Tenant.
+  - Build `GET /api/integration/users` so n8n can map its chat agents to Fasto's internal `user_id`s.
+  - Build `POST /api/integration/attendances` to allow n8n to programmatically create new attendances linked to specific tenants and users.
+- [ ] **Sales & Quality Notification Triggers:** Implement backend logic to automatically notify Managers when an attendance is marked as "Won" (Ganhos), receives a critically low quality score, or breaches a specific Response Time SLA.
+- [ ] **Data Export/Reporting:** Allow Admins to export attendance and KPI data to CSV/Excel.
+- [ ] **Billing/Subscription Management:** Integrate a payment gateway (e.g., Stripe/Asaas) to manage tenant trial periods and active statuses dynamically.
 
 ## 🛠 Architecture
-- **Frontend**: React 19, TypeScript, Vite, TailwindCSS (CDN).
-- **Backend**: Node.js, Express, MySQL2 (Pool-based).
+- **Frontend**: React 19, TypeScript, Vite, TailwindCSS (CDN), Recharts, Lucide React.
+- **Backend**: Node.js, Express, MySQL2 (Pool-based), Nodemailer.
 - **Database**: MySQL 8.0 (Schema: `fasto_db`).
 - **Deployment**: Docker Compose for local development; Gitea Actions for CI/CD pushing to a Gitea Registry and deploying via Portainer webhook.
 
@@ -36,11 +52,10 @@ Copy `.env.example` to `.env` and adjust values:
 ```bash
 cp .env.example .env
 ```
-Ensure you set the database credentials (`DB_NAME=fasto_db` for production) and `GITEA_RUNNER_REGISTRATION_TOKEN`.
+*Note:* The backend automatically strips literal quotes from Docker `.env` string values (like `SMTP_PASS`) to prevent authentication crashes.
 
 ### 2. Database
-The project expects a MySQL database. The `docker-compose.local.yml` initializes it with `agenciac_comia.sql`.
-*Note for Production:* If migrating from an old version, you must manually run the SQL to create the `password_resets` and `pending_registrations` tables, or rebuild the volume.
+The project expects a MySQL database. The `docker-compose.local.yml` initializes it. The Node.js backend automatically runs non-destructive schema migrations on startup (adding tables like `notifications`, `funnels`, `funnel_stages`, and modifying `attendances`).
 
 ### 3. Running Locally (Docker Compose)
 To start the application and database locally: