feat(04-01): implement CAS checkout, lock release, stale recovery, and migration 16

- Rewrite checkoutTask to use runId-based CAS with checkout_run_id IS NULL guard
- Add releaseTaskLock and recoverStaleLocks methods
- Add lock release in finishRun and cancelRunForDeletion exit paths
- Add migration 16: pending_wakes to wakeup_requests cutover with DROP TABLE
- Replace all pending_wakes references with wakeup_requests
- Add wakeup lifecycle CRUD: enqueue, claim, complete, defer, promote, list
- Update api-server, orchestration-service, worker-service callers
- Update existing database.test.ts for new checkoutTask signature

src/main/worker-service.ts

@@ -145,9 +145,14 @@ export function createWorkerService({
       }
 
       for (const agentId of affectedAgentIds) {
-        const pendingWakes = db.consumePendingWakes(agentId);
-        for (const wake of pendingWakes) {
-          wakeAgentIfPossible(agentId, wake.companyId, wake.trigger);
+        // Promote any deferred wakes back to queued, then process queued wakes
+        const agentRuns = snapshot.runs.filter((r) => r.agentId === agentId);
+        for (const companyId of new Set(agentRuns.map((r) => r.companyId))) {
+          db.promoteWakeupRequests(agentId, companyId);
+          const wakes = db.listWakeupRequests(companyId, { agentId, status: "queued" });
+          for (const wake of wakes) {
+            wakeAgentIfPossible(agentId, wake.companyId, wake.source);
+          }
         }
       }
 
@@ -381,10 +386,12 @@ export function createWorkerService({
         }
       }
 
-      const pendingWakes = db.consumePendingWakes(run.agentId);
-      if (pendingWakes.length > 0 && !isQuitting() && !destroyed) {
-        for (const wake of pendingWakes) {
-          wakeAgentIfPossible(run.agentId, wake.companyId, wake.trigger);
+      // Promote any deferred wakes back to queued after run completes
+      db.promoteWakeupRequests(run.agentId, run.companyId);
+      const queuedWakes = db.listWakeupRequests(run.companyId, { agentId: run.agentId, status: "queued" });
+      if (queuedWakes.length > 0 && !isQuitting() && !destroyed) {
+        for (const wake of queuedWakes) {
+          wakeAgentIfPossible(run.agentId, wake.companyId, wake.source);
         }
       }