fix(server): wake agent when issue status changes from backlog

Previously, agents were only woken when the assignee changed. Now
also wakes the assigned agent when an issue transitions out of
backlog status (e.g. backlog -> todo).

Fixes #167

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

server/src/routes/issues.ts

@@ -575,6 +575,10 @@ export function issueRoutes(db: Db, storage: StorageService) {
     }
 
     const assigneeChanged = assigneeWillChange;
+    const statusChangedFromBacklog =
+      existing.status === "backlog" &&
+      issue.status !== "backlog" &&
+      req.body.status !== undefined;
 
     // Merge all wakeups from this update into one enqueue per agent to avoid duplicate runs.
     void (async () => {
@@ -592,6 +596,18 @@ export function issueRoutes(db: Db, storage: StorageService) {
         });
       }
 
+      if (!assigneeChanged && statusChangedFromBacklog && issue.assigneeAgentId) {
+        wakeups.set(issue.assigneeAgentId, {
+          source: "automation",
+          triggerDetail: "system",
+          reason: "issue_status_changed",
+          payload: { issueId: issue.id, mutation: "update" },
+          requestedByActorType: actor.actorType,
+          requestedByActorId: actor.actorId,
+          contextSnapshot: { issueId: issue.id, source: "issue.status_change" },
+        });
+      }
+
       if (commentBody && comment) {
         let mentionedIds: string[] = [];
         try {