feat(FN-5083): complete Step 4 — add recover branch binding route

packages/engine/src/project-engine.ts

@@ -635,6 +635,10 @@ export class ProjectEngine {
     return this.runtime.getHeartbeatMonitor();
   }
 
+  getSelfHealingManager() {
+    return this.runtime.getSelfHealingManager();
+  }
+
   /** Get the project working directory. */
   getWorkingDirectory(): string {
     return this.config.workingDirectory;

packages/engine/src/runtimes/in-process-runtime.ts

@@ -1119,6 +1119,10 @@ export class InProcessRuntime
     return this.heartbeatMonitor;
   }
 
+  getSelfHealingManager(): SelfHealingManager | undefined {
+    return this.selfHealingManager;
+  }
+
   /**
    * Get the HeartbeatTriggerScheduler instance (if initialized).
    * Returns undefined when agent monitoring is not available.