enable change password

sentence_api/README.md

@@ -62,12 +62,22 @@ POST   /api/v1/admin/videos/{sha256}/process
 PUT    /api/v1/admin/videos/{sha256}/sentences/{index}
 PUT    /api/v1/admin/videos/{sha256}/sentences/{index}/split
 PUT    /api/v1/admin/videos/{sha256}/sentences/{index}/boundary
+PUT    /api/v1/admin/users/password
 DELETE /api/v1/admin/videos/{sha256}
 ```
 
 Admin endpoints use `X-Admin-Key` when `ADMIN_API_KEY` is configured. Assessment
 requests use `X-Client-Key` when `CLIENT_API_KEY` is configured.
 
+Administrators can set a local password for an SSO-linked account with:
+
+```bash
+curl -X PUT https://your-server/api/v1/admin/users/password \
+  -H "X-Admin-Key: $ADMIN_API_KEY" \
+  -H "Content-Type: application/json" \
+  -d '{"username":"bobcoc","password":"new-password"}'
+```
+
 `POST /api/v1/audio/sentence-boundaries` accepts an audio file from an
 authenticated client, generates boundaries in memory/temp storage only, and
 returns a sentence document. It does not register or archive the uploaded