Reconcile queue state on startup, remove age-based staleness check

On boot, query Coder for running workspaces and re-adopt them into the
active queue. This prevents 409 conflicts after restarts and ensures
callbacks still work for in-flight tasks.

On 409: only delete stopped/failed workspaces. Running workspaces are
adopted — never killed based on age.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/index.ts

@@ -84,6 +84,11 @@ if (maintenanceRepos.length > 0) {
 // Start
 // ---------------------------------------------------------------------------
 
+// Reconcile queue state with Coder before accepting traffic
+queue.reconcile().catch((err) =>
+  console.error("[startup] reconcile failed:", err),
+);
+
 serve({ fetch: app.fetch, port: config.port }, (info) => {
   console.log(`SDLC Orchestrator listening on :${info.port} (concurrency: ${concurrency})`);
 });