fix(function): isolated-vm worker pool to prevent single-worker bottleneck + execution user id resolution (#3155)

* fix(executor): isolated-vm worker pool to prevent single-worker bottleneck

* chore(helm): add isolated-vm worker pool env vars to values.yaml

* fix(userid): resolution for fair scheduling

* add fallback back

* add to helm charts

* remove constant fallbacks

* fix

* address bugbot comments

* fix fallbacks

* one more bugbot comment

---------

Co-authored-by: Vikhyath Mondreti <vikhyath@simstudio.ai>

apps/sim/app/api/function/execute/route.ts

@@ -845,6 +845,8 @@ export async function POST(req: NextRequest) {
       contextVariables,
       timeoutMs: timeout,
       requestId,
+      ownerKey: `user:${auth.userId}`,
+      ownerWeight: 1,
     })
 
     const executionTime = Date.now() - startTime

apps/sim/app/api/workflows/[id]/execute/route.ts

@@ -325,6 +325,11 @@ export async function POST(req: NextRequest, { params }: { params: Promise<{ id:
       requestId
     )
 
+    // Client-side sessions and personal API keys bill/permission-check the
+    // authenticated user, not the workspace billed account.
+    const useAuthenticatedUserAsActor =
+      isClientSession || (auth.authType === 'api_key' && auth.apiKeyType === 'personal')
+
     const preprocessResult = await preprocessExecution({
       workflowId,
       userId,
@@ -334,6 +339,7 @@ export async function POST(req: NextRequest, { params }: { params: Promise<{ id:
       checkDeployment: !shouldUseDraftState,
       loggingSession,
       useDraftState: shouldUseDraftState,
+      useAuthenticatedUserAsActor,
     })
 
     if (!preprocessResult.success) {