fix: show session title and workspace in /sessions picker

Read cwd from session.header (not only meta) and title from sessionTitle service or session/title events; list details in the message body and richer inline buttons.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/label.test.ts

@@ -0,0 +1,66 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+import {
+  buttonLabel,
+  describeAgent,
+  detailLines,
+  displayLabel,
+  readSessionCwd,
+  readSessionTitle,
+  workspaceName,
+} from '../src/label.ts'
+import { SessionId } from '@deepseek-ai/dsh-session/types'
+
+test('workspaceName takes last path segment', () => {
+  assert.equal(workspaceName('D:\\gitData\\dsh-telegram-channel'), 'dsh-telegram-channel')
+  assert.equal(workspaceName('/home/me/proj/app'), 'app')
+})
+
+test('readSessionCwd prefers header.cwd over meta.cwd', () => {
+  assert.equal(readSessionCwd({ header: { cwd: '/real' }, meta: { cwd: '/old' } }), '/real')
+  assert.equal(readSessionCwd({ meta: { cwd: '/legacy' } }), '/legacy')
+})
+
+test('readSessionTitle uses service, then events', () => {
+  const session = {
+    header: { cwd: '/w' },
+    events: [
+      { type: 'user/message', data: {} },
+      { type: 'session/title', data: { title: '  修复登录  ' } },
+    ],
+  }
+  assert.equal(readSessionTitle(undefined, session), '修复登录')
+  const ctx = {
+    sessionTitle: { get: () => ({ title: '来自服务' }) },
+  }
+  assert.equal(readSessionTitle(ctx as any, session), '来自服务')
+})
+
+test('describeAgent builds title + workspace + id tail', () => {
+  const agent = {
+    id: SessionId('0123456789abcdef-live'),
+    session: {
+      header: { cwd: 'D:/gitData/my-app' },
+      events: [{ type: 'session/title', data: { title: '重构支付' } }],
+    },
+  }
+  const parts = describeAgent(agent as any, 0)
+  assert.equal(parts.title, '重构支付')
+  assert.equal(parts.workspace, 'my-app')
+  assert.match(detailLines(parts), /重构支付/)
+  assert.match(detailLines(parts), /D:\/gitData\/my-app/)
+  assert.match(buttonLabel(parts), /^1\. 重构支付/)
+  assert.match(displayLabel(parts), /重构支付 · my-app/)
+})
+
+test('buttonLabel stays within 64 chars', () => {
+  const longTitle = '啊'.repeat(80)
+  const label = buttonLabel({
+    index: 0,
+    title: longTitle,
+    workspace: 'ws',
+    idTail: 'abc',
+    sessionId: 'x',
+  })
+  assert.ok([...label].length <= 64)
+})