fix(backend): correct satellite command event types for MCP deletion operations

Previously, deletion operations incorrectly sent 'mcp_installation_created'
events to satellites. This bug occurred because the code called
notifyMcpInstallation() for all operations including deletions.

Changes:
- Add notifyMcpDeletion() method to SatelliteCommandService
- Fix delete.ts route to use notifyMcpDeletion() instead of notifyMcpInstallation()
- Fix mcpServerCascadeDeletionWorker to use correct deletion method
- Fix teamService deleteTeam to use correct deletion method for all team installations
- Add comprehensive satellite commands documentation
- Update satellite communication docs with event types reference

This ensures database records and logs accurately reflect operation types
(mcp_installation_deleted vs mcp_installation_created) and sets proper
foundation for future event-driven satellite processing.

Author: Lasim

services/backend/src/routes/mcp/installations/delete.ts

@@ -89,12 +89,12 @@ export default async function deleteInstallationRoute(server: FastifyInstance) {
       // Create satellite commands for configuration update notification
       try {
         const satelliteCommandService = new SatelliteCommandService(db, request.log);
-        const commands = await satelliteCommandService.notifyMcpInstallation(
+        const commands = await satelliteCommandService.notifyMcpDeletion(
           installationId,
           teamId,
           userId
         );
-        
+
         request.log.info({
           operation: 'delete_mcp_installation',
           installationId,

services/backend/src/services/satelliteCommandService.ts

@@ -326,4 +326,23 @@ export class SatelliteCommandService {
     });
   }
 
+  /**
+   * Convenience method for MCP deletion events
+   * Creates immediate priority configure commands for all global satellites
+   */
+  async notifyMcpDeletion(installationId: string, teamId: string, userId?: string): Promise<SatelliteCommand[]> {
+    return await this.createCommandForAllGlobalSatellites({
+      commandType: 'configure',
+      priority: 'immediate',
+      payload: {
+        event: 'mcp_installation_deleted',
+        installation_id: installationId,
+        team_id: teamId
+      },
+      targetTeamId: teamId,
+      expiresInMinutes: 5,
+      createdBy: userId
+    });
+  }
+
 }

services/backend/src/services/teamService.ts

@@ -309,7 +309,7 @@ export class TeamService {
 
           // 2. Create satellite commands to kill processes (fire-and-forget)
           try {
-            const commands = await satelliteCommandService.notifyMcpInstallation(
+            const commands = await satelliteCommandService.notifyMcpDeletion(
               installation.id,
               teamId,
               userId

services/backend/src/workers/mcpServerCascadeDeletionWorker.ts

@@ -251,7 +251,7 @@ export class McpServerCascadeDeletionWorker implements Worker {
 
     // Notify satellites to refresh configuration
     try {
-      const commands = await this.satelliteCommandService.notifyMcpInstallation(
+      const commands = await this.satelliteCommandService.notifyMcpDeletion(
         installationId,
         teamId,
         deletedBy.id