fix(cli): queue /plan, /interview, /review mid-turn instead of interrupting

cli/src/commands/__tests__/router-steering.test.ts

@@ -6,11 +6,14 @@ import {
   activateSteering,
   drainSteeringMessages,
 } from '../../utils/steering-buffer'
+import { findCommand } from '../command-registry'
 import { routeUserPrompt } from '../router'
 
 import type { RouterParams } from '../command-registry'
 
-const createMockParams = (overrides: Partial<RouterParams> = {}): RouterParams =>
+const createMockParams = (
+  overrides: Partial<RouterParams> = {},
+): RouterParams =>
   ({
     agentMode: 'DEFAULT',
     inputRef: { current: null },
@@ -125,4 +128,94 @@ describe('mid-turn routing', () => {
     expect(params.sendMessage).toHaveBeenCalledTimes(1)
     expect(drainSteeringMessages('run-1')).toEqual([])
   })
+
+  describe('plan/interview/review input modes queue instead of interrupting', () => {
+    afterEach(() => {
+      useChatStore.getState().setInputMode('default')
+    })
+
+    test('plan mode queues a mid-turn submit instead of sending it', async () => {
+      useChatStore.getState().setInputMode('plan')
+      const params = createMockParams({
+        inputValue: 'add dark mode',
+        isStreaming: true,
+      })
+      await routeUserPrompt(params)
+
+      // Must never fire a second run against the busy owner: that would
+      // register a new active-run owner and interrupt the in-flight one.
+      expect(params.sendMessage).not.toHaveBeenCalled()
+      expect(params.addToQueue).toHaveBeenCalledTimes(1)
+      const [queued] = (params.addToQueue as ReturnType<typeof mock>).mock
+        .calls[0] as [string]
+      expect(queued).toContain('add dark mode')
+    })
+
+    test('interview mode queues a mid-turn submit instead of sending it', async () => {
+      useChatStore.getState().setInputMode('interview')
+      const params = createMockParams({
+        inputValue: 'what should the API look like',
+        isStreaming: true,
+      })
+      await routeUserPrompt(params)
+
+      expect(params.sendMessage).not.toHaveBeenCalled()
+      expect(params.addToQueue).toHaveBeenCalledTimes(1)
+    })
+
+    test('review mode queues a mid-turn submit instead of sending it', async () => {
+      useChatStore.getState().setInputMode('review')
+      const params = createMockParams({
+        inputValue: 'check for null handling',
+        isStreaming: true,
+      })
+      await routeUserPrompt(params)
+
+      expect(params.sendMessage).not.toHaveBeenCalled()
+      expect(params.addToQueue).toHaveBeenCalledTimes(1)
+    })
+
+    test('plan mode still sends immediately when idle', async () => {
+      useChatStore.getState().setInputMode('plan')
+      const params = createMockParams({ inputValue: 'add dark mode' })
+      await routeUserPrompt(params)
+
+      expect(params.sendMessage).toHaveBeenCalledTimes(1)
+      expect(params.addToQueue).not.toHaveBeenCalled()
+    })
+  })
+
+  describe('/interview and /review with inline args queue instead of interrupting', () => {
+    test('/interview <text> queues mid-turn instead of sending', () => {
+      const params = createMockParams({
+        inputValue: '/interview what should the API look like',
+        isStreaming: true,
+      })
+      findCommand('interview')!.handler(params, 'what should the API look like')
+
+      expect(params.sendMessage).not.toHaveBeenCalled()
+      expect(params.addToQueue).toHaveBeenCalledTimes(1)
+    })
+
+    test('/review <text> queues mid-turn instead of sending', () => {
+      const params = createMockParams({
+        inputValue: '/review check for null handling',
+        isStreaming: true,
+      })
+      findCommand('review')!.handler(params, 'check for null handling')
+
+      expect(params.sendMessage).not.toHaveBeenCalled()
+      expect(params.addToQueue).toHaveBeenCalledTimes(1)
+    })
+
+    test('/interview <text> still sends immediately when idle', () => {
+      const params = createMockParams({
+        inputValue: '/interview what should the API look like',
+      })
+      findCommand('interview')!.handler(params, 'what should the API look like')
+
+      expect(params.sendMessage).toHaveBeenCalledTimes(1)
+      expect(params.addToQueue).not.toHaveBeenCalled()
+    })
+  })
 })

cli/src/commands/command-registry.ts

@@ -608,15 +608,10 @@ const ALL_COMMANDS: CommandDefinition[] = [
       params.saveToHistory(params.inputValue.trim())
       clearInput(params)
 
-      // If user provided text directly, send it immediately
+      // If user provided text directly, send it now (or queue it if a run
+      // is already in progress)
       if (trimmedArgs) {
-        params.sendMessage({
-          content: buildInterviewPrompt(trimmedArgs),
-          agentMode: params.agentMode,
-        })
-        setTimeout(() => {
-          params.scrollToLatest()
-        }, 0)
+        sendOrQueuePrompt(params, buildInterviewPrompt(trimmedArgs))
         return
       }
 
@@ -633,15 +628,10 @@ const ALL_COMMANDS: CommandDefinition[] = [
       params.saveToHistory(params.inputValue.trim())
       clearInput(params)
 
-      // If user provided plan text directly, send it immediately
+      // If user provided plan text directly, send it now (or queue it if a
+      // run is already in progress)
       if (trimmedArgs) {
-        params.sendMessage({
-          content: buildPlanPrompt(trimmedArgs),
-          agentMode: params.agentMode,
-        })
-        setTimeout(() => {
-          params.scrollToLatest()
-        }, 0)
+        sendOrQueuePrompt(params, buildPlanPrompt(trimmedArgs))
         return
       }
 
@@ -658,15 +648,10 @@ const ALL_COMMANDS: CommandDefinition[] = [
       params.saveToHistory(params.inputValue.trim())
       clearInput(params)
 
-      // If user provided review text directly, send it immediately without showing the screen
+      // If user provided review text directly, send it now without showing
+      // the screen (or queue it if a run is already in progress)
       if (trimmedArgs) {
-        params.sendMessage({
-          content: buildReviewPromptFromArgs(trimmedArgs),
-          agentMode: params.agentMode,
-        })
-        setTimeout(() => {
-          params.scrollToLatest()
-        }, 0)
+        sendOrQueuePrompt(params, buildReviewPromptFromArgs(trimmedArgs))
         return
       }
 
@@ -808,33 +793,50 @@ function createSkillCommand(skillName: string): CommandDefinition {
 }
 
 /**
- * Send (or queue, mid-turn) a user-invoked skill prompt. Shared by the
- * /skill:<name> args form and the skill input mode's submit (router), so the
- * two entry paths for the same feature cannot drift.
+ * Send a prompt immediately, or queue it behind an in-progress run so it
+ * isn't dropped. Shared by every command whose handler can also fire
+ * mid-turn (skill args, /plan, /interview, /review, and their input-mode
+ * counterparts in the router) so those entry paths can't drift out of sync
+ * with the busy check.
  */
-export function dispatchSkillPrompt(
+export function sendOrQueuePrompt(
   params: RouterParams,
-  skill: { name: string; content: string },
-  input: string,
+  content: string,
+  attachments: PendingAttachment[] = [],
 ): void {
-  const userPrompt = buildSkillPrompt(skill, input)
-
   if (
     params.isStreaming ||
     params.streamMessageIdRef.current ||
     params.isChainInProgressRef.current
   ) {
-    params.addToQueue(userPrompt, capturePendingAttachments())
+    params.addToQueue(content, attachments)
     params.setInputFocused(true)
     params.inputRef.current?.focus()
     return
   }
 
   params.sendMessage({
-    content: userPrompt,
+    content,
     agentMode: params.agentMode,
   })
   setTimeout(() => {
     params.scrollToLatest()
   }, 0)
 }
+
+/**
+ * Send (or queue, mid-turn) a user-invoked skill prompt. Shared by the
+ * /skill:<name> args form and the skill input mode's submit (router), so the
+ * two entry paths for the same feature cannot drift.
+ */
+export function dispatchSkillPrompt(
+  params: RouterParams,
+  skill: { name: string; content: string },
+  input: string,
+): void {
+  sendOrQueuePrompt(
+    params,
+    buildSkillPrompt(skill, input),
+    capturePendingAttachments(),
+  )
+}

cli/src/commands/router.ts

@@ -5,6 +5,7 @@ import { runTerminalCommand } from '@codebuff/sdk'
 import {
   dispatchSkillPrompt,
   findCommand,
+  sendOrQueuePrompt,
   type RouterParams,
   type CommandResult,
 } from './command-registry'
@@ -325,10 +326,7 @@ export async function routeUserPrompt(
     setInputFocused(true)
     inputRef.current?.focus()
 
-    sendMessage({ content: buildPlanPrompt(trimmed), agentMode })
-    setTimeout(() => {
-      scrollToLatest()
-    }, 0)
+    sendOrQueuePrompt(params, buildPlanPrompt(trimmed))
     return
   }
 
@@ -341,10 +339,7 @@ export async function routeUserPrompt(
     setInputFocused(true)
     inputRef.current?.focus()
 
-    sendMessage({ content: buildInterviewPrompt(trimmed), agentMode })
-    setTimeout(() => {
-      scrollToLatest()
-    }, 0)
+    sendOrQueuePrompt(params, buildInterviewPrompt(trimmed))
     return
   }
 
@@ -389,10 +384,7 @@ export async function routeUserPrompt(
     setInputFocused(true)
     inputRef.current?.focus()
 
-    sendMessage({ content: buildReviewPrompt('custom', trimmed), agentMode })
-    setTimeout(() => {
-      scrollToLatest()
-    }, 0)
+    sendOrQueuePrompt(params, buildReviewPrompt('custom', trimmed))
     return
   }