feat(engine): Improve execution stalls troubleshooting, align dev and prod behavior, adding heartbeats.yield utility

apps/webapp/app/env.server.ts

@@ -519,8 +519,8 @@ const EnvironmentSchema = z
     RUN_ENGINE_WORKER_IMMEDIATE_POLL_INTERVAL: z.coerce.number().int().default(100),
     RUN_ENGINE_TIMEOUT_PENDING_EXECUTING: z.coerce.number().int().default(60_000),
     RUN_ENGINE_TIMEOUT_PENDING_CANCEL: z.coerce.number().int().default(60_000),
-    RUN_ENGINE_TIMEOUT_EXECUTING: z.coerce.number().int().default(60_000),
-    RUN_ENGINE_TIMEOUT_EXECUTING_WITH_WAITPOINTS: z.coerce.number().int().default(60_000),
+    RUN_ENGINE_TIMEOUT_EXECUTING: z.coerce.number().int().default(300_000), // 5 minutes
+    RUN_ENGINE_TIMEOUT_EXECUTING_WITH_WAITPOINTS: z.coerce.number().int().default(300_000), // 5 minutes
     RUN_ENGINE_TIMEOUT_SUSPENDED: z.coerce
       .number()
       .int()
@@ -735,6 +735,7 @@ const EnvironmentSchema = z
     RUN_ENGINE_RUN_QUEUE_LOG_LEVEL: z
       .enum(["log", "error", "warn", "info", "debug"])
       .default("info"),
+    RUN_ENGINE_TREAT_PRODUCTION_EXECUTION_STALLS_AS_OOM: z.string().default("0"),
 
     /** How long should the presence ttl last */
     DEV_PRESENCE_SSE_TIMEOUT: z.coerce.number().int().default(30_000),

apps/webapp/app/v3/runEngine.server.ts

@@ -15,6 +15,8 @@ function createRunEngine() {
     prisma,
     readOnlyPrisma: $replica,
     logLevel: env.RUN_ENGINE_WORKER_LOG_LEVEL,
+    treatProductionExecutionStallsAsOOM:
+      env.RUN_ENGINE_TREAT_PRODUCTION_EXECUTION_STALLS_AS_OOM === "1",
     worker: {
       disabled: env.RUN_ENGINE_WORKER_ENABLED === "0",
       workers: env.RUN_ENGINE_WORKER_COUNT,