semi implemented and features implemented save checkpoint

docs/features/unchecked/cli/cli-notification-simulation-and-acknowledgment.md

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+# CLI Notification Simulation and Acknowledgment
+
+## Module
+Cli
+
+## Status
+IMPLEMENTED
+
+## Description
+CLI commands for simulating notification rules against events (`stella notify simulate`) and acknowledging incidents (`stella notify ack`) with tenant-scoped operation support.
+
+## Implementation Details
+- **Command Group**: `src/Cli/StellaOps.Cli/Commands/NotifyCommandGroup.cs` -- `NotifyCommandGroup` for notification commands
+- **Notify Client**: `src/Cli/StellaOps.Cli/Services/NotifyClient.cs` / `INotifyClient.cs` -- notification API client
+- **Route consolidation**: Notify commands consolidated under `stella config notify` via cli-routes.json
+- **Commands**:
+  - `stella config notify simulate <event-type>` -- simulate notification rules against an event
+  - `stella config notify ack <incident-id>` -- acknowledge an incident notification
+  - `stella config notify channels list` -- list notification channels
+  - `stella config notify channels test <channel>` -- test a notification channel
+  - `stella config notify templates list` -- list notification templates
+- **Tenant scoping**: Operations support `--tenant` flag for multi-tenant environments
+
+## E2E Test Plan
+- [ ] Run `stella config notify simulate gate-failure` and verify notification rules evaluated
+- [ ] Run `stella config notify ack <incident-id>` and verify acknowledgment recorded
+- [ ] Run `stella config notify channels list` and verify channels displayed
+- [ ] Run `stella config notify channels test slack` and verify connectivity test
+- [ ] Run `stella config notify templates list` and verify templates listed
+- [ ] Verify tenant scoping with `--tenant <id>` flag
+- [ ] Verify deprecated `stella notify simulate` still works with warning