feat(gateway): Discord channel auto-creation on project bootstrap (#200)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

apps/gateway/src/workspace/project-bootstrap.service.ts

@@ -1,6 +1,7 @@
 import { Inject, Injectable, Logger } from '@nestjs/common';
 import type { Brain } from '@mosaic/brain';
 import { BRAIN } from '../brain/brain.tokens.js';
+import { PluginService } from '../plugin/plugin.service.js';
 import { WorkspaceService } from './workspace.service.js';
 
 export interface BootstrapProjectParams {
@@ -23,6 +24,7 @@ export class ProjectBootstrapService {
   constructor(
     @Inject(BRAIN) private readonly brain: Brain,
     private readonly workspace: WorkspaceService,
+    private readonly pluginService: PluginService,
   ) {}
 
   /**
@@ -67,6 +69,28 @@ export class ProjectBootstrapService {
       status: 'active',
     });
 
+    // 4. Notify plugins so they can set up project-specific resources (e.g. Discord channel)
+    try {
+      for (const plugin of this.pluginService.getPlugins()) {
+        if (plugin.onProjectCreated) {
+          const result = await plugin.onProjectCreated({
+            id: project.id,
+            name: params.name,
+            description: params.description,
+          });
+          if (result?.channelId) {
+            await this.brain.projects.update(project.id, {
+              metadata: { discordChannelId: result.channelId },
+            });
+          }
+        }
+      }
+    } catch (err) {
+      this.logger.warn(
+        `Plugin project notification failed: ${err instanceof Error ? err.message : String(err)}`,
+      );
+    }
+
     this.logger.log(`Project ${project.id} bootstrapped at ${workspacePath}`);
 
     return { projectId: project.id, workspacePath };