diff --git a/web/src/App.tsx b/web/src/App.tsx
index f1121192..2bbc4c3f 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -142,7 +142,11 @@ import { fetchChatTurnStatus } from './api/chatTurn';
 import { createClientTurnId } from './lib/createClientTurnId';
 import { mergeSessionUser } from './lib/mergeSessionUser';
 import { mapServerProjectToProjectInfo, mergeProjectLists } from './lib/projectAdapter';
-import { mapServerSessionToProjectSession, mergeSessionLists } from './lib/sessionAdapter';
+import {
+  mapServerSessionToProjectSession,
+  mergeSessionLists,
+  resolveSessionProjectId,
+} from './lib/sessionAdapter';
 import { SendMessageResult } from './types/sendMessage';
 import { CategoryFilterBar } from './components/history/CategoryFilterBar';
 import { HistoryCalendar } from './components/history/HistoryCalendar';
@@ -600,7 +604,8 @@ export default function App() {
   // 获取当前激活会话的项目ID (默认为 1)
   const currentProjectId = useMemo(() => {
     const activeSess = sessions.find((s) => s.sessionId === activeSessionId);
-    return activeSess ? activeSess.projectId : 1;
+    const resolved = resolveSessionProjectId(activeSess);
+    return resolved > 0 ? resolved : 1;
   }, [sessions, activeSessionId]);
 
   // 获取当前项目与当前用户在其中的成员职责
@@ -2444,7 +2449,14 @@ export default function App() {
           // fall through to network retry path
         }
       }
-      failOrRetry(buildNetworkErrorInfo());
+      const httpStatus =
+        typeof _err === 'object' && _err !== null && 'httpStatus' in _err
+          ? Number((_err as { httpStatus?: number }).httpStatus)
+          : undefined;
+      // #region agent log
+      fetch('http://localhost:7284/ingest/86170f40-1203-4130-a0c7-f6e39ba00464',{method:'POST',headers:{'Content-Type':'application/json','X-Debug-Session-Id':'6c6caa'},body:JSON.stringify({sessionId:'6c6caa',location:'App.tsx:runTaskAttempt.catch',message:'task run failed',data:{httpStatus,taskProjectId:task.projectId,sessionId:task.sessionId,taskKey:task.taskKey},timestamp:Date.now(),hypothesisId:'H5'})}).catch(()=>{});
+      // #endregion
+      failOrRetry(buildNetworkErrorInfo(httpStatus));
     });
   };
 
@@ -2680,7 +2692,11 @@ export default function App() {
       const currentProj = sessions.find((s) => s.sessionId === activeSessionId);
       // 项目五要素暂取会话标题/设备类型；客户名沿用 bizdev-cli 演示默认值，五要素完整建模留待后续
       const clientTurnId = `turn_${Date.now()}`;
-      const projId = currentProj?.projectId || 1;
+      const projId = resolveSessionProjectId(currentProj, currentProjectId);
+      if (projId <= 0) {
+        console.error('[task] 无法解析会话所属项目', activeSessionId);
+        return { accepted: false };
+      }
       const matchedDeliverable = deliverables.find(
         (d) => d.projectId === projId && d.taskKey === matchedTemplate.taskKey,
       );
diff --git a/web/src/api/taskRuns.ts b/web/src/api/taskRuns.ts
index 7896ea89..bc0add34 100644
--- a/web/src/api/taskRuns.ts
+++ b/web/src/api/taskRuns.ts
@@ -21,8 +21,21 @@ export async function createTaskRun(body: CreateTaskRunBody): Promise<CreateTask
     headers: getBearerAuthHeaders('application/json'),
     body: JSON.stringify(body),
   });
+  // #region agent log
+  fetch('http://localhost:7284/ingest/86170f40-1203-4130-a0c7-f6e39ba00464',{method:'POST',headers:{'Content-Type':'application/json','X-Debug-Session-Id':'6c6caa'},body:JSON.stringify({sessionId:'6c6caa',location:'taskRuns.ts:createTaskRun',message:'create task run response',data:{status:res.status,ok:res.ok,projectId:body.project_id,taskKey:body.task_key,sessionId:body.session_id},timestamp:Date.now(),hypothesisId:'H5'})}).catch(()=>{});
+  // #endregion
   if (!res.ok) {
-    throw new Error(`create task run failed: HTTP ${res.status}`);
+    let detail = '';
+    try {
+      const payload = (await res.json()) as { message?: string; error?: string; error_code?: string };
+      detail = payload.message || payload.error || payload.error_code || '';
+    } catch {
+      // ignore non-json body
+    }
+    throw Object.assign(
+      new Error(`create task run failed: HTTP ${res.status}${detail ? `: ${detail}` : ''}`),
+      { httpStatus: res.status },
+    );
   }
   return res.json();
 }
diff --git a/web/src/lib/sessionAdapter.test.ts b/web/src/lib/sessionAdapter.test.ts
index 866910d4..faa5712d 100644
--- a/web/src/lib/sessionAdapter.test.ts
+++ b/web/src/lib/sessionAdapter.test.ts
@@ -1,6 +1,11 @@
 import assert from 'node:assert/strict';
 import test from 'node:test';
-import { mapServerSessionToProjectSession, mergeSessionLists } from './sessionAdapter';
+import {
+  mapServerSessionToProjectSession,
+  mergeSessionLists,
+  parseProjectIdFromSessionId,
+  resolveSessionProjectId,
+} from './sessionAdapter';
 import { ProjectInfo, ProjectSession } from '../types/workbench';
 
 const projects: ProjectInfo[] = [
@@ -16,6 +21,22 @@ const projects: ProjectInfo[] = [
   },
 ];
 
+test('parseProjectIdFromSessionId decodes sess-p{id}-u{user}', () => {
+  assert.equal(parseProjectIdFromSessionId('sess-p143-u9'), 143);
+  assert.equal(parseProjectIdFromSessionId('sess-neuropulse-u1'), undefined);
+});
+
+test('resolveSessionProjectId prefers explicit id then session id encoding', () => {
+  assert.equal(
+    resolveSessionProjectId({ sessionId: 'sess-p143-u9', projectId: 0 }),
+    143,
+  );
+  assert.equal(
+    resolveSessionProjectId({ sessionId: 'sess-p143-u9', projectId: 143 }),
+    143,
+  );
+});
+
 test('mapServerSessionToProjectSession fills project metadata', () => {
   const mapped = mapServerSessionToProjectSession(
     {
diff --git a/web/src/lib/sessionAdapter.ts b/web/src/lib/sessionAdapter.ts
index 45c6dc7a..e30d8fa3 100644
--- a/web/src/lib/sessionAdapter.ts
+++ b/web/src/lib/sessionAdapter.ts
@@ -1,6 +1,32 @@
 import { ChatSessionSummary } from '../api/chatSessions';
 import { ProjectInfo, ProjectSession, StageKey } from '../types/workbench';
 
+/** 从 sess-p{projectId}-u{userId} 私聊会话 ID 解析项目 ID。 */
+export function parseProjectIdFromSessionId(sessionId: string): number | undefined {
+  const match = sessionId.match(/^sess-p(\d+)-u\d+$/);
+  if (!match) return undefined;
+  const id = Number.parseInt(match[1], 10);
+  return Number.isFinite(id) && id > 0 ? id : undefined;
+}
+
+/** 解析会话所属项目：优先显式 projectId，其次 sessionId 编码，最后外部 fallback。 */
+export function resolveSessionProjectId(
+  session: Pick<ProjectSession, 'sessionId' | 'projectId'> | undefined,
+  fallbackProjectId?: number,
+): number {
+  if (session?.projectId && session.projectId > 0) {
+    return session.projectId;
+  }
+  if (session?.sessionId) {
+    const parsed = parseProjectIdFromSessionId(session.sessionId);
+    if (parsed) return parsed;
+  }
+  if (fallbackProjectId && fallbackProjectId > 0) {
+    return fallbackProjectId;
+  }
+  return 0;
+}
+
 function formatSessionUpdatedAt(iso: string): string {
   const parsed = Date.parse(iso);
   if (Number.isNaN(parsed)) {
@@ -31,7 +57,11 @@ export function mapServerSessionToProjectSession(
   return {
     sessionId: session.session_id,
     userId: session.user_id,
-    projectId: session.project_id ?? existing?.projectId ?? 0,
+    projectId:
+      session.project_id ??
+      existing?.projectId ??
+      parseProjectIdFromSessionId(session.session_id) ??
+      0,
     title: session.title || session.project_name || project?.title || existing?.title || '对话协同会话',
     deviceType: project?.deviceType || existing?.deviceType || '',
     stage,