Fix silent failures in logic function route trigger execution (#19698)

## Summary

Route-triggered logic functions were returning empty 500 responses with
zero server-side logging when the Lambda build chain failed. This PR
makes those failures observable and returns meaningful HTTP responses to
API clients.

- **Observability** — Log errors (with stack traces) at each layer of
the execution chain: `LambdaDriver` (deps-layer fetch, SDK-layer fetch,
invocation), `LogicFunctionExecutorService`, and `RouteTriggerService`.
- **Typed exceptions** — Replace raw `throw error` sites with
`LogicFunctionException` carrying an appropriate code and
`userFriendlyMessage` (new codes: `LOGIC_FUNCTION_EXECUTION_FAILED`,
`LOGIC_FUNCTION_LAYER_BUILD_FAILED`).
- **Correct HTTP semantics** — `RouteTriggerService` maps inner
exception codes to the right `RouteTriggerExceptionCode` so
`LOGIC_FUNCTION_NOT_FOUND` returns 404 and `RATE_LIMIT_EXCEEDED` returns
429 (new code + filter case) instead of a generic 500.
- **User-facing messages** — Forward the inner
`CustomException.userFriendlyMessage` when wrapping into
`RouteTriggerException`, without leaking raw internal error text into
the public exception message.
- **Infra** — Bump Lambda ephemeral storage from 2048 to 4096 MB to
prevent `ENOSPC` errors during yarn install layer builds (root cause of
the original silent failures).

packages/twenty-server/src/engine/metadata-modules/logic-function/logic-function.exception.ts

@@ -14,6 +14,8 @@ export enum LogicFunctionExceptionCode {
   LOGIC_FUNCTION_CREATE_FAILED = 'LOGIC_FUNCTION_CREATE_FAILED',
   LOGIC_FUNCTION_COMPILATION_FAILED = 'LOGIC_FUNCTION_COMPILATION_FAILED',
   LOGIC_FUNCTION_EXECUTION_TIMEOUT = 'LOGIC_FUNCTION_EXECUTION_TIMEOUT',
+  LOGIC_FUNCTION_EXECUTION_FAILED = 'LOGIC_FUNCTION_EXECUTION_FAILED',
+  LOGIC_FUNCTION_LAYER_BUILD_FAILED = 'LOGIC_FUNCTION_LAYER_BUILD_FAILED',
   LOGIC_FUNCTION_DISABLED = 'LOGIC_FUNCTION_DISABLED',
   LOGIC_FUNCTION_INVALID_SEED_PROJECT = 'LOGIC_FUNCTION_INVALID_SEED_PROJECT',
 }
@@ -40,6 +42,10 @@ const getLogicFunctionExceptionUserFriendlyMessage = (
       return msg`Function code failed to compile.`;
     case LogicFunctionExceptionCode.LOGIC_FUNCTION_EXECUTION_TIMEOUT:
       return msg`Function execution timed out.`;
+    case LogicFunctionExceptionCode.LOGIC_FUNCTION_EXECUTION_FAILED:
+      return msg`Function execution failed.`;
+    case LogicFunctionExceptionCode.LOGIC_FUNCTION_LAYER_BUILD_FAILED:
+      return msg`Failed to build function dependencies.`;
     case LogicFunctionExceptionCode.LOGIC_FUNCTION_DISABLED:
       return msg`Logic function execution is disabled.`;
     case LogicFunctionExceptionCode.LOGIC_FUNCTION_INVALID_SEED_PROJECT:

packages/twenty-server/src/engine/metadata-modules/logic-function/utils/logic-function-graphql-api-exception-handler.utils.ts

@@ -29,6 +29,8 @@ export const logicFunctionGraphQLApiExceptionHandler = (error: any) => {
       case LogicFunctionExceptionCode.LOGIC_FUNCTION_CODE_UNCHANGED:
       case LogicFunctionExceptionCode.LOGIC_FUNCTION_CREATE_FAILED:
       case LogicFunctionExceptionCode.LOGIC_FUNCTION_INVALID_SEED_PROJECT:
+      case LogicFunctionExceptionCode.LOGIC_FUNCTION_EXECUTION_FAILED:
+      case LogicFunctionExceptionCode.LOGIC_FUNCTION_LAYER_BUILD_FAILED:
         throw error;
       case LogicFunctionExceptionCode.LOGIC_FUNCTION_COMPILATION_FAILED:
         throw new UserInputError(error);