Frontend Observability session RCA

Diagnose one real-user session from a gcx dump. First answer is dump-only. Do not invent LogQL, SQL, or Explore URLs. Do not instrument SDKs here.

1. Collect identity

Required — do not fetch until all three are present:

• app id: <app_id>
• session id: <session_id>
• datasource UID (-d): <datasource_uid> — Grafana datasource UID, not loki or pinot

Optional:

• grafana URL: <grafana_url>
• from: <from>
• to: <to>

Take them from the prompt, pasted Frontend Observability session context, or filled placeholders above. If a required value is still a <…> token or missing, ask the user and stop. Do not guess ids. Do not pick a datasource for them (you may mention gcx datasources list so they can choose a Loki or Pinot UID). In that same ask, say the time-range default below so they can override it in one reply.