refactor(api): type workflow service dicts with TypedDict (#33829)

api/services/workflow_app_service.py

@@ -5,6 +5,7 @@ from typing import Any
 
 from sqlalchemy import and_, func, or_, select
 from sqlalchemy.orm import Session
+from typing_extensions import TypedDict
 
 from dify_graph.enums import WorkflowExecutionStatus
 from models import Account, App, EndUser, TenantAccountJoin, WorkflowAppLog, WorkflowArchiveLog, WorkflowRun
@@ -14,6 +15,10 @@ from services.plugin.plugin_service import PluginService
 from services.workflow.entities import TriggerMetadata
 
 
+class LogViewDetails(TypedDict):
+    trigger_metadata: dict[str, Any] | None
+
+
 # Since the workflow_app_log table has exceeded 100 million records, we use an additional details field to extend it
 class LogView:
     """Lightweight wrapper for WorkflowAppLog with computed details.
@@ -22,12 +27,12 @@ class LogView:
     - Proxies all other attributes to the underlying `WorkflowAppLog`
     """
 
-    def __init__(self, log: WorkflowAppLog, details: dict | None):
+    def __init__(self, log: WorkflowAppLog, details: LogViewDetails | None):
         self.log = log
         self.details_ = details
 
     @property
-    def details(self) -> dict | None:
+    def details(self) -> LogViewDetails | None:
         return self.details_
 
     def __getattr__(self, name):