Forge-outage resilience: planboard and PR actions survive GitHub downtime #427

Cursor launched Origin (its own forge) on Aug 17, 2026 — the same day as a major GitHub outage, which VentureBeat framed as the opening. Solenta depends on GitHub for the planboard, PR state, and issue ingestion; a GitHub outage currently means degraded everything.

Add a degraded mode: cache issues/PR states read-side (the data is already pulled regularly), keep planboard readable and threads dispatchable from cached issue text, and queue outbound operations (comments, PR creation, label changes) for replay when the forge recovers — visible as 'queued, will send when GitHub is back'. Never silently fail or lose an action.