feat: Implement NotifyPanelComponent with unit tests and mock API service

- Added NotifyPanelComponent for managing notification channels and rules.
- Implemented reactive forms for channel and rule management.
- Created unit tests for NotifyPanelComponent to validate functionality.
- Developed MockNotifyApiService to simulate API interactions for testing.
- Added mock data for channels, rules, and deliveries to facilitate testing.
- Introduced RuntimeEventFactoryTests to ensure correct event creation with build ID.

docs/15_UI_GUIDE.md

@@ -147,15 +147,27 @@ If you paste YAML but enable **Strict Mode** (toggle), backend converts to Rego
 
 Lists discovered UI plugins; each can inject routes/panels. Toggle on/off without reload.
 
-### 3.6 Settings → **Quota & Tokens** (new)
-
-* View current **Client‑JWT claims** (tier, maxScansPerDay, expiry).  
-* **Generate Offline Token** – admin‑only button → POST `/token/offline` (UI wraps the API).  
-* Upload new token file for manual refresh.
-
----
-
-## 4 i18n & l10n
+### 3.6 Settings → **Quota & Tokens** (new)
+
+* View current **Client‑JWT claims** (tier, maxScansPerDay, expiry).  
+* **Generate Offline Token** – admin‑only button → POST `/token/offline` (UI wraps the API).  
+* Upload new token file for manual refresh.
+
+### 3.7 Notifications Panel (new)
+
+Route: **`/notify`** (header shortcut “Notify”). The panel now exposes every Notify control-plane primitive without depending on the backend being online.
+
+| Area | What you can do |
+| --- | --- |
+| **Channels** | Create/edit Slack/Teams/Email/Webhook channels, toggle enablement, maintain labels/metadata, and execute **test send** previews. Channel health cards show mocked status + trace IDs so ops can validate wiring before Notify.WebService is reachable. |
+| **Rules** | Manage routing rules (matchers, severity gates, throttles/digests, locale hints). A single-action form keeps Signal-style configuration quick while mirroring Notify schema (`match`, `actions[]`). |
+| **Deliveries** | Browsable ledger with status filter (All/Sent/Failed/Throttled/…​), showing targets, kinds, and timestamps so operators confirm noise controls. |
+
+The component leans on the mocked Notify API service in `src/app/testing/mock-notify-api.service.ts`, meaning Offline Kit demos run instantly yet the view stays API-shaped (same DTOs + tenant header expectations).
+
+---
+
+## 4 i18n & l10n
 
 * JSON files under `/locales`.  
 * Russian (`ru`) ships first‑class, translated security terms align with **GOST R ISO/IEC 27002‑2020**.