feat(timeouts): execution timeout limits (#3120)

* feat(timeouts): execution timeout limits

* fix type issues

* add to docs

* update stale exec cleanup route

* update more callsites

* update tests

* address bugbot comments

* remove import expression

* support streaming and async paths'

* fix streaming path

* add hitl and workflow handler

* make sync path match

* consolidate

* timeout errors

* validation errors typed

* import order

* Merge staging into feat/timeout-lims

Resolved conflicts:
- stt/route.ts: Keep both execution timeout and security imports
- textract/parse/route.ts: Keep both execution timeout and validation imports
- use-workflow-execution.ts: Keep cancellation console entry from feature branch
- input-validation.ts: Remove server functions (moved to .server.ts in staging)
- tools/index.ts: Keep execution timeout, use .server import for security

* make run from block consistent

* revert console update change

* fix subflow errors

* clean up base 64 cache correctly

* update docs

* consolidate workflow execution and run from block hook code

* remove unused constant

* fix cleanup base64 sse

* fix run from block tracespan

apps/sim/executor/constants.ts

@@ -1,3 +1,4 @@
+import { getMaxExecutionTimeout } from '@/lib/core/execution-limits'
 import type { LoopType, ParallelType } from '@/lib/workflows/types'
 
 /**
@@ -187,8 +188,12 @@ export const HTTP = {
 
 export const AGENT = {
   DEFAULT_MODEL: 'claude-sonnet-4-5',
-  DEFAULT_FUNCTION_TIMEOUT: 600000,
-  REQUEST_TIMEOUT: 600000,
+  get DEFAULT_FUNCTION_TIMEOUT() {
+    return getMaxExecutionTimeout()
+  },
+  get REQUEST_TIMEOUT() {
+    return getMaxExecutionTimeout()
+  },
   CUSTOM_TOOL_PREFIX: 'custom_',
 } as const
 

apps/sim/executor/execution/engine.ts

@@ -162,6 +162,8 @@ export class ExecutionEngine {
         }
       }
 
+      this.finalizeIncompleteLogs()
+
       const errorMessage = normalizeError(error)
       logger.error('Execution failed', { error: errorMessage })
 

apps/sim/executor/handlers/wait/wait-handler.ts

@@ -14,7 +14,7 @@ const sleep = async (ms: number, options: SleepOptions = {}): Promise<boolean> =
   const { signal, executionId } = options
   const useRedis = isRedisCancellationEnabled() && !!executionId
 
-  if (!useRedis && signal?.aborted) {
+  if (signal?.aborted) {
     return false
   }
 
@@ -27,7 +27,7 @@ const sleep = async (ms: number, options: SleepOptions = {}): Promise<boolean> =
     const cleanup = () => {
       if (mainTimeoutId) clearTimeout(mainTimeoutId)
       if (checkIntervalId) clearInterval(checkIntervalId)
-      if (!useRedis && signal) signal.removeEventListener('abort', onAbort)
+      if (signal) signal.removeEventListener('abort', onAbort)
     }
 
     const onAbort = () => {
@@ -37,6 +37,10 @@ const sleep = async (ms: number, options: SleepOptions = {}): Promise<boolean> =
       resolve(false)
     }
 
+    if (signal) {
+      signal.addEventListener('abort', onAbort, { once: true })
+    }
+
     if (useRedis) {
       checkIntervalId = setInterval(async () => {
         if (resolved) return
@@ -49,8 +53,6 @@ const sleep = async (ms: number, options: SleepOptions = {}): Promise<boolean> =
           }
         } catch {}
       }, CANCELLATION_CHECK_INTERVAL_MS)
-    } else if (signal) {
-      signal.addEventListener('abort', onAbort, { once: true })
     }
 
     mainTimeoutId = setTimeout(() => {

apps/sim/executor/handlers/workflow/workflow-handler.ts

@@ -126,6 +126,7 @@ export class WorkflowBlockHandler implements BlockHandler {
           workspaceId: ctx.workspaceId,
           userId: ctx.userId,
           executionId: ctx.executionId,
+          abortSignal: ctx.abortSignal,
         },
       })
 

apps/sim/executor/utils/subflow-utils.ts

@@ -229,6 +229,10 @@ export function addSubflowErrorLog(
   }
   ctx.blockLogs.push(blockLog)
 
+  if (contextExtensions?.onBlockStart) {
+    contextExtensions.onBlockStart(blockId, blockName, blockType, execOrder)
+  }
+
   if (contextExtensions?.onBlockComplete) {
     contextExtensions.onBlockComplete(blockId, blockName, blockType, {
       input: inputData,