docs: update port 8000 references to 8011 in apps/clients docs

- Update apps/clients/1_quick-start.md: coordinator URL 8000 → 8011
- Update apps/clients/3_job-lifecycle.md: API endpoints 8000 → 8011
- More documentation files still need port 8000 → 8011 updates

docs/apps/clients/1_quick-start.md

@@ -6,7 +6,7 @@
 
 ```bash
 pip install -e .                                        # from monorepo root
-aitbc config set coordinator_url http://localhost:8000
+aitbc config set coordinator_url http://localhost:8011
 export AITBC_API_KEY=your-key
 
 # Verify installation

docs/apps/clients/3_job-lifecycle.md

@@ -26,7 +26,7 @@ aitbc client status --job-id <JOB_ID>
 import requests
 
 response = requests.get(
-    "http://localhost:8000/v1/jobs/{job_id}",
+    "http://localhost:8011/v1/jobs/{job_id}",
     headers={"X-Api-Key": "your-key"}
 )
 print(response.json())
@@ -106,7 +106,7 @@ aitbc client download --job-id <JOB_ID> --output ./results
 import requests
 
 response = requests.get(
-    "http://localhost:8000/v1/jobs/{job_id}/download",
+    "http://localhost:8011/v1/jobs/{job_id}/download",
     headers={"X-Api-Key": "your-key"}
 )