refactor: remove name from WorkflowDefinition, fix threadId type errors

WorkflowDefinition no longer carries 'name' — name is a registry-level
concern, not a bundle property. Also fixed all missing threadId in test
fixtures to match the updated ThreadContext type.

小橘 <xiaoju@shazhou.work>

packages/workflow/src/engine.ts

@@ -167,6 +167,7 @@ export async function executeThread(
   }
 
   const bundleOptions: WorkflowFnOptions = {
+    threadId: io.threadId,
     isDryRun: options.isDryRun,
     maxRounds: options.maxRounds,
   };

packages/workflow/src/types.ts

@@ -89,7 +89,6 @@ export type Moderator<M extends RoleMeta> = (
 
 /** Complete workflow definition as authored by users. */
 export type WorkflowDefinition<M extends RoleMeta> = {
-  name: string;
   roles: { [K in keyof M & string]: Role<M[K]> };
   moderator: Moderator<M>;
 };

packages/workflow/src/worker.ts

@@ -136,7 +136,7 @@ function parseRunControlPayload(rec: Record<string, unknown>): RunCommand | null
     threadId,
     workflowName,
     prompt,
-    options: { threadId, isDryRun, maxRounds },
+    options: { isDryRun, maxRounds },
     steps: parsedSteps.steps,
     stepTimestamps: parsedSteps.stepTimestamps,
     forkSourceThreadId,