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/cache/classes.secrets.scan.service.ts

@@ -84,6 +84,7 @@ export class SecretsScanService {
     try {
       const connections = this.connectionManager.getConnections();
       for (const conn of connections) {
+        if (conn.status === 'paused') continue;
         try {
           const provider = this.connectionManager.getProvider(conn.id);
           connectionsScanned++;