feat: deploy all stacks to shared ai-stack-portal project

- Add SHARED_PROJECT_ID and SHARED_ENVIRONMENT_ID env vars
- Add findApplicationByName to Dokploy client for app-based lookup
- Update production-deployer to use shared project instead of creating new ones
- Update name availability check to query apps in shared environment
- Update delete endpoint to remove apps from shared project
- Rollback no longer deletes shared project (only app/domain)
- Backward compatible: falls back to per-project if env vars not set

src/api/dokploy-production.ts

@@ -408,6 +408,22 @@ export class DokployProductionClient {
     );
   }
 
+  async getApplicationsByEnvironmentId(environmentId: string): Promise<DokployApplication[]> {
+    const env = await this.request<{ applications: DokployApplication[] }>(
+      'GET',
+      `/environment.one?environmentId=${environmentId}`,
+      undefined,
+      'environment',
+      'get-apps'
+    );
+    return env.applications || [];
+  }
+
+  async findApplicationByName(environmentId: string, name: string): Promise<DokployApplication | null> {
+    const apps = await this.getApplicationsByEnvironmentId(environmentId);
+    return apps.find(a => a.name === name) || null;
+  }
+
   async createDomain(
     host: string,
     applicationId: string,