feat(cli): improve slash command discovery

docs/design/slash-command/roadmap.md

@@ -258,13 +258,11 @@
 
 #### 3.5 Claude Code 缺失命令补齐
 
-补充 Qwen Code 当前没有、Claude Code 有且常用的命令：
+确认并回归 Qwen Code 已有的 `/doctor` 命令；`/release-notes` 不纳入本阶段，避免引入无明确产品需求的 built-in 命令表面。
 
-| 命令             | 类型    | 说明                                     |
-| ---------------- | ------- | ---------------------------------------- |
-| `/doctor`        | `local` | 环境自检，输出配置/连接/工具状态诊断     |
-| `/release-notes` | `local` | 展示当前版本的更新日志                   |
-| `/cost`          | `local` | 展示当前 session 的 token 消耗和费用估算 |
+| 命令      | 类型    | 说明                                 |
+| --------- | ------- | ------------------------------------ |
+| `/doctor` | `local` | 环境自检，输出配置/连接/工具状态诊断 |
 
 > 注：`/review`、`/commit` 等任务类命令以 bundled skill 形式提供，不在此列。
 
@@ -275,10 +273,11 @@
 - [ ] 近期使用的命令在补全列表中优先出现
 - [ ] alias 命中时在补全项中注明原名
 - [ ] mid-input slash：ghost text 提示正确渲染
-- [ ] `/help` 输出按来源分组，每条命令展示支持模式标记
+- [ ] `/help` 以 Claude Code 风格分 tab 展示，避免命令堆砌，并在命令页展示支持模式标记
 - [ ] ACP available commands 包含 `argumentHint`、`source`、`subcommands` 字段
-- [ ] `/doctor`、`/release-notes`、`/cost` 三个命令可用
+- [ ] `/doctor` 命令可用
 - [ ] `/doctor` 在 non-interactive 模式下可执行（返回 `message`）
+- [ ] 不新增 `/release-notes`
 
 ---
 

packages/cli/src/acp-integration/session/Session.test.ts

@@ -18,6 +18,7 @@ import type {
 } from '@agentclientprotocol/sdk';
 import type { LoadedSettings } from '../../config/settings.js';
 import * as nonInteractiveCliCommands from '../../nonInteractiveCliCommands.js';
+import { CommandKind } from '../../ui/commands/types.js';
 
 vi.mock('../../nonInteractiveCliCommands.js', () => ({
   ALLOWED_BUILTIN_COMMANDS_NON_INTERACTIVE: [
@@ -250,6 +251,23 @@ describe('Session', () => {
           description: 'Initialize project context',
           kind: 'built-in',
           argumentHint: '[path]',
+          source: 'builtin-command',
+          sourceLabel: 'Built-in',
+          supportedModes: ['interactive', 'non_interactive', 'acp'],
+          modelInvocable: false,
+          subCommands: [
+            {
+              name: 'visible',
+              description: 'Visible subcommand',
+              kind: CommandKind.BUILT_IN,
+            },
+            {
+              name: 'hidden',
+              description: 'Hidden subcommand',
+              kind: CommandKind.BUILT_IN,
+              hidden: true,
+            },
+          ],
         },
       ]);
 
@@ -269,6 +287,14 @@ describe('Session', () => {
               name: 'init',
               description: 'Initialize project context',
               input: { hint: '[path]' },
+              _meta: {
+                argumentHint: '[path]',
+                source: 'builtin-command',
+                sourceLabel: 'Built-in',
+                supportedModes: ['interactive', 'non_interactive', 'acp'],
+                subcommands: ['visible'],
+                modelInvocable: false,
+              },
             },
           ],
         },
@@ -298,6 +324,14 @@ describe('Session', () => {
               name: 'export',
               description: 'Export conversation history',
               input: { hint: '' },
+              _meta: {
+                argumentHint: undefined,
+                source: undefined,
+                sourceLabel: undefined,
+                supportedModes: ['interactive'],
+                subcommands: ['md'],
+                modelInvocable: false,
+              },
             },
           ],
         },
@@ -333,6 +367,14 @@ describe('Session', () => {
               name: 'init',
               description: 'Initialize project context',
               input: null,
+              _meta: {
+                argumentHint: undefined,
+                source: undefined,
+                sourceLabel: undefined,
+                supportedModes: ['interactive'],
+                subcommands: [],
+                modelInvocable: false,
+              },
             },
           ],
           _meta: {

packages/cli/src/acp-integration/session/Session.ts

@@ -58,6 +58,8 @@ import {
   needsConfirmation,
   isPlanModeBlocked,
 } from '@qwen-code/qwen-code-core';
+import { getCommandSubcommandNames } from '../../services/commandMetadata.js';
+import { getEffectiveSupportedModes } from '../../services/commandUtils.js';
 
 import { RequestError } from '@agentclientprotocol/sdk';
 import type {
@@ -1270,6 +1272,14 @@ export class Session implements SessionContext {
           name: cmd.name,
           description: cmd.description,
           input: acceptsInput ? { hint: cmd.argumentHint ?? '' } : null,
+          _meta: {
+            argumentHint: cmd.argumentHint,
+            source: cmd.source,
+            sourceLabel: cmd.sourceLabel,
+            supportedModes: getEffectiveSupportedModes(cmd),
+            subcommands: getCommandSubcommandNames(cmd),
+            modelInvocable: cmd.modelInvocable === true,
+          },
         };
       });