diff --git a/01_content/src/client/index.tsx b/01_content/src/client/index.tsx
index 313968c..b74ef0d 100644
--- a/01_content/src/client/index.tsx
+++ b/01_content/src/client/index.tsx
@@ -265,6 +265,40 @@ const registryStore: { ids: string[]; listeners: Set<() => void> } = { ids: [],
 /** 自定义窗口 → 宿主会话桥（apply 时注入；不可用时 CustomPane 降级提示） */
 let sessionBridge: { sessions: any; conversation: any; list: any } | null = null
 
+/** 把文本送入指定会话：宿主同款寻址（binding(id).session.prompt / sendSession(会话面)），
+ *  插件是根级上下文，无作用域的 conversation.send 会报 requires a session scope，不可用。 */
+async function promptIntoSession(sessionId: string, text: string): Promise<void> {
+  const b = sessionBridge
+  if (!b) throw new Error('bridge unavailable')
+  const sessions = b.sessions as any
+  // 新会话入列可能异步：最多等 2s 直到 binding 可解析
+  let session: any = null
+  for (let i = 0; i < 10; i++) {
+    try { session = sessions?.binding?.(sessionId)?.session ?? null } catch { session = null }
+    if (session) break
+    await new Promise((r) => setTimeout(r, 200))
+  }
+  if (session) {
+    // 1) 宿主包装（正确签名：会话面 + 空图片 + queue 投递）
+    if (typeof b.conversation?.sendSession === 'function') {
+      try { await b.conversation.sendSession(session, text, [], 'queue'); return } catch { /* 包装失败则直连 */ }
+    }
+    // 2) 直连会话面 prompt（宿主 sendSession 内部同款路径）
+    if (typeof session.prompt === 'function') {
+      const result = await session.prompt([{ type: 'text', text }], 'queue')
+      if (result && result.ok) return
+      if (result && !result.ok) throw new Error('session.prompt: ' + (result.error?.code ?? 'rejected') + (result.error?.message ? ': ' + result.error.message : ''))
+    }
+  }
+  // 3) 备用：作用域上下文里取 conversation 服务再发
+  try {
+    const scoped = sessions?.scope?.(sessionId)
+    const conv = scoped?.get?.('conversation')
+    if (conv && typeof conv.send === 'function') { await conv.send(text); return }
+  } catch { /* 落入最终报错 */ }
+  throw new Error('no send path: session face unavailable')
+}
+
 /** 自定义窗口任务：新建一个专属会话，注入工作台背景 + 用户需求，并打开该会话 */
 export async function createCustomSession(projectId: string, projectName: string, requirement: string): Promise<void> {
   const b = sessionBridge
@@ -283,12 +317,8 @@ export async function createCustomSession(projectId: string, projectName: string
     '   该窗口位于「' + projectName + '」项目内，如需要也可协助该项目后续的其他自定义工作。',
   ].join('\n')
   const sessionId = await b.sessions.create({})
-  let sent = false
-  if (typeof b.conversation?.sendSession === 'function') {
-    try { await b.conversation.sendSession(sessionId, text); sent = true } catch { sent = false }
-  }
-  try { b.sessions.open?.(sessionId) } catch {}
-  if (!sent) await b.conversation?.send?.(text)
+  try { await b.sessions.open?.(sessionId) } catch {}
+  await promptIntoSession(sessionId, text)
 }
 
 /** 把自定义需求直接发到用户选定的已有会话（默认当前会话） */
@@ -302,12 +332,8 @@ export async function sendCustomToSession(sessionId: string, projectName: string
     '2. 用户需求：' + requirement,
     '3. 请帮助完成该窗口的自定义设计（内容/页面/实现方案），该窗口位于「' + projectName + '」项目内。',
   ].join('\n')
-  let sent = false
-  if (typeof b.conversation?.sendSession === 'function') {
-    try { await b.conversation.sendSession(sessionId, text); sent = true } catch { sent = false }
-  }
-  try { b.sessions.open?.(sessionId) } catch {}
-  if (!sent) await b.conversation?.send?.(text)
+  try { await b.sessions.open?.(sessionId) } catch {}
+  await promptIntoSession(sessionId, text)
 }
 
 /** 会话作用域快照（模块级；apply 里订阅 ctx.sessions.list 写入，组件与引擎只读） */
@@ -1389,7 +1415,7 @@ export const inject = ['slots', 'locale', 'sessions', 'conversation']
 export function apply(ctx: any) {
   // 自定义窗口 → 宿主会话桥：保存 sessions/conversation/list 服务引用（模块级）
   sessionBridge = { sessions: ctx.sessions ?? null, conversation: ctx.conversation ?? null, list: ctx.sessions?.list ?? null }
-  try { (window as any).__dshOpenSession = (id: string) => ctx.sessions?.open?.(id); (window as any).__dshSessions = ctx.sessions } catch {}
+  try { (window as any).__dshOpenSession = (id: string) => ctx.sessions?.open?.(id); (window as any).__dshSessions = ctx.sessions; (window as any).__dshPromptIntoSession = (id: string, text: string) => promptIntoSession(id, text) } catch {}
 
 
   ctx.effect(() => {
diff --git a/02_process/worklogs/2026-08-16_worktable-v2.md b/02_process/worklogs/2026-08-16_worktable-v2.md
index 7f3241c..4c36d81 100644
--- a/02_process/worklogs/2026-08-16_worktable-v2.md
+++ b/02_process/worklogs/2026-08-16_worktable-v2.md
@@ -663,3 +663,21 @@
   仓库根的 lib/，宿主仍加载 01_content/lib 旧 bundle，出现「改完不生效」假象（已删误产物）。
 - 备注：纯客户端改动，F5 即生效，无需重启 dsh web。
 
+## 补记（修复「发送到会话」失败：conversation.send requires a session scope）
+
+- 用户实测报错：创建对话失败：Error: conversation.send requires a session scope — address one via
+  ctx.sessions.scope(id).conversation。
+- 根因：① conversation.sendSession(session, text, images, mode) 第一参数是「会话面」对象而非 id
+  字符串，旧代码传 id → 静默失败；② 回退的 conversation.send 按插件自身 ctx 解析作用域，
+  而 dsh-worktable 是根级插件，无会话标签 → 宿主报 requires a session scope。
+- 探针实测（读宿主 dsh-client-runtime / dsh-client-ui-conversation 源码 + 页面验证）：
+  scope(id).conversation 属性访问被 inject 代理拦截；scope(id).get('conversation') 可用；
+  sessions.binding(id).session.prompt([{type:'text',text}], 'queue') 是宿主 sendSession 同款路径。
+- 修复：新增 promptIntoSession(sessionId, text)——binding 解析重试 2s → 宿主
+  conversation.sendSession(会话面, text, [], 'queue') → 直连 session.prompt → scope(id).get
+  ('conversation').send 三级降级；createCustomSession / sendCustomToSession 统一走该函数，
+  open(会话) 后发送（右侧对话窗仍自动切换）。
+- 验证：send-self-test.cjs 端到端自测（新建一次性会话 session-91a6adea，promptOk=true、
+  listEntry running=true 轮次启动）；functional-diag 全 20 STEP ERROR_COUNT: 0。
+- 备注：纯客户端改动，F5 即生效；自测留下的一次性会话请用户手动删除。
+
diff --git a/04_test/scope-probe.cjs b/04_test/scope-probe.cjs
new file mode 100644
index 0000000..4f60e62
--- /dev/null
+++ b/04_test/scope-probe.cjs
@@ -0,0 +1,73 @@
+// scope-probe.cjs — 只读实测会话寻址路径（不发消息）
+const http = require('http');
+const { spawn } = require('child_process');
+const WebSocket = require('ws');
+const PORT = 9337;
+const proc = spawn('C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe', [
+  '--headless=new', '--disable-gpu', '--no-first-run', '--no-default-browser-check',
+  '--window-size=1440,900', '--force-device-scale-factor=1',
+  '--remote-debugging-port=' + PORT,
+  '--user-data-dir=C:\\Users\\SJL\\AppData\\Local\\Temp\\wt-chrome-scopeprobe',
+  'about:blank',
+], { stdio: 'ignore' });
+const getJSON = (p) => new Promise((res, rej) => {
+  http.get({ host: '127.0.0.1', port: PORT, path: p }, (r) => { let d=''; r.on('data',c=>d+=c); r.on('end',()=>{try{res(JSON.parse(d))}catch(e){rej(e)}}) }).on('error', rej);
+});
+const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+(async () => {
+  let list = null;
+  for (let i = 0; i < 40; i++) { try { list = await getJSON('/json/list'); if (list && list.length) break; } catch {} await sleep(500); }
+  const target = list.find((t) => t.type === 'page') || list[0];
+  const ws = new WebSocket(target.webSocketDebuggerUrl);
+  let id = 0; const pending = new Map();
+  const send = (method, params) => new Promise((res) => { const mid = ++id; pending.set(mid, res); ws.send(JSON.stringify({ id: mid, method, params })); });
+  ws.on('message', (raw) => { const m = JSON.parse(String(raw)); if (m.id && pending.has(m.id)) { pending.get(m.id)(m); pending.delete(m.id); } });
+  await new Promise((r) => ws.on('open', r));
+  await send('Runtime.enable');
+  await send('Page.navigate', { url: 'http://127.0.0.1:3080/' });
+  const evaluate = async (expr) => {
+    const r = await send('Runtime.evaluate', { expression: expr, returnByValue: true, awaitPromise: true });
+    if (r.result && r.result.exceptionDetails) return { __error: (r.result.exceptionDetails.exception || {}).description || r.result.exceptionDetails.text };
+    return r.result && r.result.result ? r.result.result.value : undefined;
+  };
+  let ready = null;
+  for (let i = 0; i < 30; i++) { await sleep(1000); ready = await evaluate("!!window.__dshSessions"); if (ready === true) break; }
+  console.log('READY:', JSON.stringify(ready));
+  const step = await evaluate(`(function(){
+    var out = {};
+    var S = window.__dshSessions;
+    var snap = S.list && S.list.getSnapshot ? S.list.getSnapshot() : null;
+    var probeId = snap && snap.current;
+    out.probeId = probeId;
+    out.sessMethods = Object.getOwnPropertyNames(Object.getPrototypeOf(S) || {}).slice(0, 40);
+    // 路径 A：scope(id).conversation
+    var sc = null;
+    try { sc = S.scope(probeId); } catch(e) { out.scopeErr = e.message; }
+    if (sc) {
+      out.scopeType = typeof sc;
+      try { out.scopeKeys = Object.keys(sc); } catch(e) { out.scopeKeysErr = e.message; }
+      try { out.convType = typeof sc.conversation; } catch(e) { out.convErr = e.message; }
+      try { out.getConvType = typeof (sc.get ? sc.get('conversation') : null); } catch(e) { out.getConvErr = e.message; }
+    }
+    // 路径 B：binding(id).session.prompt
+    var b = null;
+    try { b = S.binding(probeId); } catch(e) { out.bindingErr = e.message; }
+    if (b) {
+      try { out.bindingKeys = Object.keys(b); } catch(e) { out.bindingKeysErr = e.message; }
+      try {
+        var sess = b.session;
+        out.sessionType = typeof sess;
+        var proto = sess && Object.getPrototypeOf(sess);
+        out.sessionProtoMethods = proto ? Object.getOwnPropertyNames(proto).slice(0, 40) : null;
+        out.hasPrompt = !!(sess && typeof sess.prompt === 'function');
+        out.hasSend = !!(sess && typeof sess.send === 'function');
+      } catch(e) { out.sessionErr = e.message; }
+    }
+    // 路径 C：conversation.sendSession(sessionFace, ...)
+    out.convSendSessionArgs = null;
+    var C = window.__dshSessions ? null : null;
+    return JSON.stringify(out);
+  })()`);
+  console.log('PROBE:', JSON.stringify(step));
+  ws.close(); proc.kill(); process.exit(0);
+})().catch((e) => { console.error('FATAL', e && e.stack || e); try { proc.kill(); } catch {} process.exit(1); });
diff --git a/04_test/send-self-test.cjs b/04_test/send-self-test.cjs
new file mode 100644
index 0000000..b99625b
--- /dev/null
+++ b/04_test/send-self-test.cjs
@@ -0,0 +1,65 @@
+// send-self-test.cjs — 端到端自测：新建一次性会话 → promptIntoSession 真发一条消息 → 验证送达
+// 会创建一个一次性会话并触发一次极小 LLM 轮次，跑完请用户删除该会话。
+const http = require('http');
+const { spawn } = require('child_process');
+const WebSocket = require('ws');
+const PORT = 9338;
+const proc = spawn('C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe', [
+  '--headless=new', '--disable-gpu', '--no-first-run', '--no-default-browser-check',
+  '--window-size=1440,900', '--force-device-scale-factor=1',
+  '--remote-debugging-port=' + PORT,
+  '--user-data-dir=C:\\Users\\SJL\\AppData\\Local\\Temp\\wt-chrome-sendtest',
+  'about:blank',
+], { stdio: 'ignore' });
+const getJSON = (p) => new Promise((res, rej) => {
+  http.get({ host: '127.0.0.1', port: PORT, path: p }, (r) => { let d=''; r.on('data',c=>d+=c); r.on('end',()=>{try{res(JSON.parse(d))}catch(e){rej(e)}}) }).on('error', rej);
+});
+const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+(async () => {
+  let list = null;
+  for (let i = 0; i < 40; i++) { try { list = await getJSON('/json/list'); if (list && list.length) break; } catch {} await sleep(500); }
+  const target = list.find((t) => t.type === 'page') || list[0];
+  const ws = new WebSocket(target.webSocketDebuggerUrl);
+  let id = 0; const pending = new Map();
+  const send = (method, params) => new Promise((res) => { const mid = ++id; pending.set(mid, res); ws.send(JSON.stringify({ id: mid, method, params })); });
+  ws.on('message', (raw) => { const m = JSON.parse(String(raw)); if (m.id && pending.has(m.id)) { pending.get(m.id)(m); pending.delete(m.id); } });
+  await new Promise((r) => ws.on('open', r));
+  await send('Runtime.enable');
+  await send('Page.navigate', { url: 'http://127.0.0.1:3080/' });
+  const evaluate = async (expr) => {
+    const r = await send('Runtime.evaluate', { expression: expr, returnByValue: true, awaitPromise: true });
+    if (r.result && r.result.exceptionDetails) return { __error: (r.result.exceptionDetails.exception || {}).description || r.result.exceptionDetails.text };
+    return r.result && r.result.result ? r.result.result.value : undefined;
+  };
+  let ready = null;
+  for (let i = 0; i < 30; i++) { await sleep(1000); ready = await evaluate("!!window.__dshPromptIntoSession"); if (ready === true) break; }
+  console.log('READY:', JSON.stringify(ready));
+  const step = await evaluate(`(async function(){
+    var out = {};
+    var S = window.__dshSessions;
+    try {
+      var newId = await S.create({});
+      out.newId = newId;
+      try { await S.open(newId); } catch(e) { out.openErr = e.message; }
+      var sentinel = '【dsh-worktable 自动测试】这是一条自测消息，请只回复：测试通过';
+      var t0 = Date.now();
+      try { await window.__dshPromptIntoSession(newId, sentinel); out.promptOk = true; } catch(e) { out.promptErr = e && e.message; }
+      out.promptMs = Date.now() - t0;
+      // 送达证据：列表快照里该会话 running=true（轮次已启动）
+      var snap = S.list.getSnapshot();
+      var entry = snap.byId && snap.byId[newId];
+      out.listEntry = entry ? { running: entry.running, blank: entry.blank, title: entry.displayTitle } : null;
+      // 会话面快照：找哨兵文本
+      var binding = S.binding(newId);
+      var sess = binding && binding.session;
+      out.hasSession = !!sess;
+      var raw = '';
+      try { var ss = sess.getSnapshot(); raw = JSON.stringify(ss).slice(0, 4000); out.snapKeys = ss ? Object.keys(ss) : null; } catch(e) { out.snapErr = e.message; }
+      out.sentinelInSnapshot = raw.indexOf('自测消息') >= 0;
+      out.snapPreview = raw.slice(0, 300);
+    } catch(e) { out.fatal = e && e.message; }
+    return JSON.stringify(out);
+  })()`);
+  console.log('SELFTEST:', JSON.stringify(step));
+  ws.close(); proc.kill(); process.exit(0);
+})().catch((e) => { console.error('FATAL', e && e.stack || e); try { proc.kill(); } catch {} process.exit(1); });