Revert "fix: add explicit worker state update in task_pickup after dispatch (#23)"

This reverts commit d727a812e6.

lib/tools/task-pickup.ts

@@ -17,7 +17,7 @@ import { dispatchTask } from "../dispatch.js";
 import { type Issue, type StateLabel } from "../task-managers/task-manager.js";
 import { createProvider } from "../task-managers/index.js";
 import { selectModel } from "../model-selector.js";
-import { activateWorker, getProject, getWorker, readProjects } from "../projects.js";
+import { getProject, getWorker, readProjects } from "../projects.js";
 import type { ToolContext } from "../types.js";
 import { detectContext, generateGuardrails } from "../context-guard.js";
 import { isDevTier, isTier, type Tier } from "../tiers.js";
@@ -313,27 +313,6 @@ export function createTaskPickupTool(api: OpenClawPluginApi) {
         pluginConfig,
       });
 
-      // 8b. Explicitly update worker state in projects.json
-      // Defense in depth: ensure state is set even if dispatchTask had issues
-      const now = new Date().toISOString();
-      const stateUpdateParams: {
-        issueId: string;
-        model: string;
-        sessionKey?: string;
-        startTime?: string;
-      } = {
-        issueId: String(issue.iid),
-        model: modelAlias,
-      };
-
-      // Only set sessionKey and startTime on new spawn (not on reuse)
-      if (dispatchResult.sessionAction === "spawn") {
-        stateUpdateParams.sessionKey = dispatchResult.sessionKey;
-        stateUpdateParams.startTime = now;
-      }
-
-      await activateWorker(workspaceDir, groupId, role, stateUpdateParams);
-
       // 9. Send notification to project group
       const notifyConfig = getNotificationConfig(pluginConfig);
       await notify(