feat(core): add table actions (edit, pause, delete confirmation) and global action log

- Add Edit and Pause/Resume actions to connections table
- Add delete confirmation modal to secrets table
- Add 'paused' status to connections with full backend support
- Skip paused connections in health checks and secrets scanning
- Add global ActionLog service with filesystem persistence
- Instrument all mutation handlers (connections, secrets, pipelines) with action logging
- Add Action Log view with entity type filtering to dashboard

ts_interfaces/data/connection.ts

@@ -7,5 +7,5 @@ export interface IProviderConnection {
   baseUrl: string;
   token: string;
   createdAt: number;
-  status: 'connected' | 'disconnected' | 'error';
+  status: 'connected' | 'disconnected' | 'error' | 'paused';
 }