fix(user-interaction): preserve multi-select custom answers

packages/ui/tui/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/ui/tui/README.md
-README.md: 0b358520b863f0b9ee7a128cf4807f582fc46d8d
-README.zh.md: 7e89197bd82d16dfbabeb715e953275e2f6dd68b
+README.md: 3c847828a3d560b85e74809f984bc9ea581e417f
+README.zh.md: 8872484a5de376e41564756332200198e587d2b3

packages/ui/tui/README.md

@@ -153,7 +153,7 @@ Append-only; newly visible content follows the reusable request prefix and does
 
 #### What the model sees
 
-When a consumer calls `ctx.userInteraction.ask()`, this provider presents each question in order and returns selected option labels or `custom` text. Abort, cancellation, or UI disposal becomes `Error: ask_user_question was interrupted before the user answered` through `dsh-tool-ask-user`.
+When a consumer calls `ctx.userInteraction.ask()`, this provider presents each question in order and returns selected option labels, `custom` text, or both for a multi-select question. Abort, cancellation, or UI disposal becomes `Error: ask_user_question was interrupted before the user answered` through `dsh-tool-ask-user`.
 
 #### Token effect
 

packages/ui/tui/README.zh.md

@@ -153,7 +153,7 @@ Paths prefixed with @ are files explicitly referenced by the user. Use the read
 
 #### 模型看到的内容
 
-消费方调用 `ctx.userInteraction.ask()` 时，此提供方会按顺序显示各个问题，并返回选中选项标签或 `custom` 文本。中止、取消或 UI dispose 会变为 `Error: ask_user_question was interrupted before the user answered`；该转换由 `dsh-tool-ask-user` 完成。
+消费方调用 `ctx.userInteraction.ask()` 时，此提供方会按顺序显示各个问题，并返回选中选项标签、`custom` 文本，或为多选题同时返回两者。中止、取消或 UI dispose 会变为 `Error: ask_user_question was interrupted before the user answered`；该转换由 `dsh-tool-ask-user` 完成。
 
 #### Token 影响
 

packages/ui/tui/src/components/dialogs.ts

@@ -799,12 +799,14 @@ export class QuestionDialog implements Component, Focusable {
       if (this.selected.has(this.selectedIndex)) this.selected.delete(this.selectedIndex)
       else this.selected.add(this.selectedIndex)
     } else if (matchesKey(data, Key.enter)) {
-      const indices = this.question.multiSelect ? [...this.selected].sort((a, b) => a - b) : [this.selectedIndex]
-      if (indices.length === 0) {
+      const selected = this.question.multiSelect
+        ? this.selectedOptionLabels()
+        : [options[this.selectedIndex]?.label].filter((label): label is string => label !== undefined)
+      if (selected.length === 0) {
         this.error = 'Select at least one option, or press Tab for a custom answer.'
         return
       }
-      this.done({ selected: indices.map(index => options[index]?.label).filter((label): label is string => label !== undefined) })
+      this.done({ selected })
     } else if (matchesKey(data, Key.tab) || data.toLowerCase() === 'c') {
       this.mode = 'custom'
       this.error = ''
@@ -819,7 +821,17 @@ export class QuestionDialog implements Component, Focusable {
       this.error = 'Enter an answer before submitting.'
       return
     }
-    this.done({ selected: [], custom })
+    this.done({
+      selected: this.question.multiSelect ? this.selectedOptionLabels() : [],
+      custom,
+    })
+  }
+
+  private selectedOptionLabels(): string[] {
+    return [...this.selected]
+      .sort((a, b) => a - b)
+      .map(index => this.options[index]?.label)
+      .filter((label): label is string => label !== undefined)
   }
 
   render(width: number): string[] {

packages/ui/tui/tests/tui.spec.ts

@@ -4436,8 +4436,12 @@ describe('TUI user-interaction dialogs', () => {
     result.terminal.send(' ')
     result.terminal.send('\x1b[B')
     result.terminal.send(' ')
+    result.terminal.send('\t')
+    result.terminal.send('Tests')
     result.terminal.send('\r')
-    await expect(multi).resolves.toEqual({ answers: [{ id: 'targets', selected: ['Code', 'Docs'] }] })
+    await expect(multi).resolves.toEqual({
+      answers: [{ id: 'targets', selected: ['Code', 'Docs'], custom: 'Tests' }],
+    })
 
     const custom = result.ctx.userInteraction.ask({
       questions: [{ id: 'other', question: 'Choose or type', options: [{ label: 'Default' }] }],