diff --git a/apps/desktop/e2e/slash-command-menu.spec.ts b/apps/desktop/e2e/slash-command-menu.spec.ts
index d78016aa9b..4a1c4a026b 100644
--- a/apps/desktop/e2e/slash-command-menu.spec.ts
+++ b/apps/desktop/e2e/slash-command-menu.spec.ts
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-import { FAKE_HOLD_OPEN_PROMPT } from '@maka/runtime/test-only/fake-backend';
 import { expect, test, COMPOSER_INPUT } from './fixtures';
 
 test('shows only slash commands executable in the current session state', async ({
@@ -208,34 +207,6 @@ test('opens the slash menu after a DOM block break', async ({
   await expect(menu).toBeVisible();
 });
 
-test('dispatches /side instead of steering it into a running turn', async ({
-  invocableSkillsWindow: page,
-}) => {
-  const composer = page.locator(COMPOSER_INPUT);
-  const runningPrompt = FAKE_HOLD_OPEN_PROMPT;
-  await composer.fill(runningPrompt);
-  await composer.press('Enter');
-  await expect(page.locator('.maka-user-message', { hasText: runningPrompt })).toBeVisible();
-  await expect(page.getByRole('button', { name: '停止' })).toBeVisible();
-
-  await composer.click();
-  await composer.pressSequentially('/');
-  const menu = page.getByRole('listbox', { name: '命令和技能' });
-  const commands = menu.getByRole('group', { name: '命令' });
-  const side = commands.getByRole('option', { name: /打开侧聊.*\/side/ });
-  await expect(side).toBeVisible();
-  await expect(commands.getByRole('option', { name: /\/compact/ })).toHaveCount(0);
-  await side.click();
-  await expect.poll(() => composer.textContent()).toBe('/side ');
-  await expect(page.locator('.maka-quote-workbar-panel')).toHaveCount(0);
-
-  await composer.fill('/side discuss separately');
-  await composer.press('Enter');
-
-  await expect(page.locator('.maka-quote-workbar-panel')).toHaveCount(1);
-  await page.getByRole('button', { name: '停止' }).click();
-});
-
 test('an open menu keeps its container and skills group across projection refreshes', async ({
   invocableSkillsWindow: page,
 }) => {
diff --git a/apps/desktop/renderer-architecture.json b/apps/desktop/renderer-architecture.json
index 1ab3bb754b..305684c186 100644
--- a/apps/desktop/renderer-architecture.json
+++ b/apps/desktop/renderer-architecture.json
@@ -891,7 +891,7 @@
           "react": 1
         },
         "importSpecifiers": 148,
-        "nonTriviaTokens": 15620
+        "nonTriviaTokens": 15617
       },
       "src/renderer/use-app-shell-composer-quotes.ts": {
         "importDeclarations": 2,
diff --git a/apps/desktop/src/main/__tests__/follow-up-submit-routing.test.ts b/apps/desktop/src/main/__tests__/follow-up-submit-routing.test.ts
index b829b09021..596a3dd656 100644
--- a/apps/desktop/src/main/__tests__/follow-up-submit-routing.test.ts
+++ b/apps/desktop/src/main/__tests__/follow-up-submit-routing.test.ts
@@ -50,6 +50,7 @@ describe('follow-up submit routing', () => {
     assert.equal(
       resolveFollowUpModeAtSubmit({
         hasActiveTurn: true,
+        slashCommand: null,
       }),
       'queue',
     );
@@ -57,6 +58,7 @@ describe('follow-up submit routing', () => {
       resolveFollowUpModeAtSubmit({
         requestedMode: 'steer',
         hasActiveTurn: true,
+        slashCommand: null,
       }),
       'steer',
     );
@@ -66,6 +68,27 @@ describe('follow-up submit routing', () => {
     assert.equal(
       resolveFollowUpModeAtSubmit({
         hasActiveTurn: false,
+        slashCommand: null,
+      }),
+      undefined,
+    );
+  });
+
+  it('dispatches a slash command mid-turn instead of steering it into the Turn', () => {
+    assert.equal(
+      resolveFollowUpModeAtSubmit({
+        hasActiveTurn: true,
+        slashCommand: { kind: 'side' },
+      }),
+      undefined,
+    );
+    // An explicit steer request loses to the command too: Shift+Enter on
+    // `/side` still opens the side chat.
+    assert.equal(
+      resolveFollowUpModeAtSubmit({
+        requestedMode: 'steer',
+        hasActiveTurn: true,
+        slashCommand: { kind: 'side' },
       }),
       undefined,
     );
diff --git a/apps/desktop/src/renderer/app-shell.tsx b/apps/desktop/src/renderer/app-shell.tsx
index e650ee81e6..e3ea229f2c 100644
--- a/apps/desktop/src/renderer/app-shell.tsx
+++ b/apps/desktop/src/renderer/app-shell.tsx
@@ -1919,12 +1919,11 @@ function AppShellContent({
     const runningTurnIds = sessionId
       ? sessionsRef.current.find((session) => session.id === sessionId)?.runningTurnIds
       : undefined;
-    const followUpAtSubmit = !slashCommand
-      ? resolveFollowUpModeAtSubmit({
-          requestedMode: metadata?.followUpMode,
-          hasActiveTurn: hasActiveTurnAtSubmit({ liveTurn, runningTurnIds }),
-        })
-      : undefined;
+    const followUpAtSubmit = resolveFollowUpModeAtSubmit({
+      requestedMode: metadata?.followUpMode,
+      hasActiveTurn: hasActiveTurnAtSubmit({ liveTurn, runningTurnIds }),
+      slashCommand,
+    });
     if (sessionId && followUpAtSubmit) {
       const queued = await enqueueFollowUp(sessionId, text, followUpAtSubmit, {
         ...metadata,
diff --git a/apps/desktop/src/renderer/follow-up-submit-routing.ts b/apps/desktop/src/renderer/follow-up-submit-routing.ts
index 951a467d99..3c2959f83a 100644
--- a/apps/desktop/src/renderer/follow-up-submit-routing.ts
+++ b/apps/desktop/src/renderer/follow-up-submit-routing.ts
@@ -35,7 +35,12 @@ export function hasActiveTurnAtSubmit(input: {
 export function resolveFollowUpModeAtSubmit(input: {
   requestedMode?: FollowUpMode;
   hasActiveTurn: boolean;
+  /** The parsed command, if the text was one. Only its presence matters here. */
+  slashCommand: object | null;
 }): FollowUpMode | undefined {
+  // A slash command tells the app to do something; it is not text for the
+  // Turn that happens to be running. Dispatch it instead of queueing it.
+  if (input.slashCommand) return undefined;
   if (input.requestedMode) return input.requestedMode;
   // Mid-turn submits always queue; Shift+Enter carries the one-shot steer as
   // the requested mode.