Remove 'Not now' from Linear skill-install modal; × handles session dismiss

Per product call: the modal is typically reached by clicking 'Set up' on
the reminder toast (an opt-in), and the dialog's × already dismisses for
the session. Drop the redundant 'Not now' button. Footer keeps only the
quiet muted 'Don't show again' (permanent opt-out); Install stays the
filled primary.

Removes onSnoozeForSession wiring + notNow i18n key (all locales); tests
exercise the × (Close) session-snooze path.

src/renderer/src/components/sidebar/LinearAgentSkillSetupDialog.tsx

@@ -35,7 +35,6 @@ type LinearAgentSkillSetupDialogProps = {
   onRecheck: AgentSkillSetupPanelProps['onRecheck']
   onOpenChange: (open: boolean) => void
   onDismissPermanently: () => void
-  onSnoozeForSession: () => void
   onDone: () => void
 }
 
@@ -55,7 +54,6 @@ export function LinearAgentSkillSetupDialog({
   onRecheck,
   onOpenChange,
   onDismissPermanently,
-  onSnoozeForSession,
   onDone
 }: LinearAgentSkillSetupDialogProps): React.JSX.Element {
   return (
@@ -154,11 +152,10 @@ export function LinearAgentSkillSetupDialog({
               onBeforeOpenTerminal={onBeforeOpenTerminal}
               onRecheck={onRecheck}
             />
-            {/* Why: this modal auto-opens unsolicited, so the reflexive dismiss must be
-                the non-destructive one. "Not now" (session snooze, same as the ×) is the
-                easy ghost target; permanent "Don't show again" is demoted to a quiet muted
-                link so nuking the prompt takes intent. Install stays the filled primary. */}
-            <DialogFooter className="px-6 pb-6 sm:items-center sm:justify-between">
+            {/* Why: the dialog's × already dismisses for the session, so the only footer
+                control is the permanent opt-out — kept as a quiet muted link so it doesn't
+                pull the eye from the filled Install primary. */}
+            <DialogFooter className="px-6 pb-6">
               <Button
                 type="button"
                 variant="link"
@@ -171,9 +168,6 @@ export function LinearAgentSkillSetupDialog({
                   "Don't show again"
                 )}
               </Button>
-              <Button type="button" variant="ghost" size="sm" onClick={onSnoozeForSession}>
-                {translate('auto.components.sidebar.LinearAgentSkillSetupPrompt.notNow', 'Not now')}
-              </Button>
             </DialogFooter>
           </>
         )}

src/renderer/src/components/sidebar/LinearAgentSkillSetupPrompt.reminder-toast.test.tsx

@@ -143,8 +143,10 @@ async function snoozeInitialModal(
   props: ComponentProps<typeof LinearAgentSkillSetupPrompt>
 ): Promise<void> {
   await renderPrompt(props)
+  // Why: the modal's casual dismiss is the dialog × (session snooze) now that
+  // "Not now" is removed.
   await act(async () => {
-    findBodyButton('Not now')?.dispatchEvent(new MouseEvent('click', { bubbles: true }))
+    findBodyButton('Close')?.dispatchEvent(new MouseEvent('click', { bubbles: true }))
   })
   await unmountPrompt()
 }
@@ -203,7 +205,7 @@ describe('LinearAgentSkillSetupPrompt reminder toast', () => {
     Reflect.deleteProperty(window, 'api')
   })
 
-  it('shows a warning toast on a later modal-only activation after Not now', async () => {
+  it('shows a warning toast on a later modal-only activation after a casual close', async () => {
     await snoozeInitialModal({ linked: true, remote: false, surface: 'modal' })
     await renderPrompt({ linked: true, remote: false, surface: 'modal' })
 

src/renderer/src/components/sidebar/LinearAgentSkillSetupPrompt.test.tsx

@@ -452,7 +452,7 @@ describe('LinearAgentSkillSetupPrompt', () => {
     )
   })
 
-  it('auto-opens as a modal-only prompt and treats Not now as a casual snooze', async () => {
+  it('auto-opens as a modal-only prompt and treats the × close as a casual snooze', async () => {
     await renderPrompt({ linked: true, remote: false, surface: 'modal' })
 
     expect(container?.textContent).not.toContain('Set up Linear agent skill')
@@ -461,19 +461,21 @@ describe('LinearAgentSkillSetupPrompt', () => {
     )
     expect(document.body.textContent).toContain('Orca CLI and Linear agent skill are missing.')
     expect(document.body.textContent).toContain('Mock install')
+    // Why: only "Don't show again" (permanent) is a footer button now; the casual
+    // dismiss is the dialog ×.
+    expect(document.body.textContent).not.toContain('Not now')
     expect(mocks.panelProps.at(-1)).toEqual(
       expect.objectContaining({
         preInstallNotice: 'CLI registration notice'
       })
     )
 
-    // Why: the unsolicited modal's labeled dismiss is the non-destructive one, so
-    // "Not now" must snooze for the session, not persist a permanent dismissal.
-    const notNowButton = Array.from(document.body.querySelectorAll('button')).find(
-      (button) => button.textContent === 'Not now'
+    // Why: the × must snooze for the session, not persist a permanent dismissal.
+    const closeButton = Array.from(document.body.querySelectorAll('button')).find(
+      (button) => button.textContent === 'Close'
     )
     await act(async () => {
-      notNowButton?.dispatchEvent(new MouseEvent('click', { bubbles: true }))
+      closeButton?.dispatchEvent(new MouseEvent('click', { bubbles: true }))
     })
 
     expect(window.localStorage.getItem(HOST_DISMISS_STORAGE_KEY)).toBeNull()

src/renderer/src/components/sidebar/LinearAgentSkillSetupPrompt.tsx

@@ -338,7 +338,6 @@ export function LinearAgentSkillSetupPrompt({
         setSetupDialogOpen(false)
       }}
       onDismissPermanently={dismissPermanently}
-      onSnoozeForSession={snoozeForSession}
       onDone={closeSuccessModal}
     />
   )

src/renderer/src/i18n/locales/en.json

@@ -4672,7 +4672,6 @@
           "modalDescription": "Install the Linear skill from a terminal.",
           "modalPrompt": "Enable agents to read and edit the attached Linear ticket.",
           "dontShowAgain": "Don't show again",
-          "notNow": "Not now",
           "missingBoth": "Orca CLI and Linear agent skill are missing.",
           "missingCli": "Orca CLI is missing.",
           "missingSkill": "Linear agent skill is missing.",

src/renderer/src/i18n/locales/es.json

@@ -4584,7 +4584,6 @@
           "modalDescription": "Instala el skill de Linear desde una terminal.",
           "modalPrompt": "Permite que los Agents lean y editen el issue de Linear adjunto.",
           "dontShowAgain": "No volver a mostrar",
-          "notNow": "Ahora no",
           "missingBoth": "Faltan la CLI de Orca y el skill de Linear para Agents.",
           "missingCli": "Falta la CLI de Orca.",
           "missingSkill": "Falta el skill de Linear para Agents.",

src/renderer/src/i18n/locales/ja.json

@@ -4584,7 +4584,6 @@
           "modalDescription": "terminal から Linear スキルをインストールします。",
           "modalPrompt": "Agents が添付された Linear チケットを読み書きできるようにします。",
           "dontShowAgain": "今後表示しない",
-          "notNow": "後で",
           "missingBoth": "Orca CLI と Linear agent スキルがありません。",
           "missingCli": "Orca CLI がありません。",
           "missingSkill": "Linear agent スキルがありません。",

src/renderer/src/i18n/locales/ko.json

@@ -4584,7 +4584,6 @@
           "modalDescription": "terminal에서 Linear 스킬을 설치합니다.",
           "modalPrompt": "agents가 첨부된 Linear 티켓을 읽고 편집할 수 있게 합니다.",
           "dontShowAgain": "다시 표시하지 않음",
-          "notNow": "나중에",
           "missingBoth": "Orca CLI와 Linear agent 스킬이 없습니다.",
           "missingCli": "Orca CLI가 없습니다.",
           "missingSkill": "Linear agent 스킬이 없습니다.",

src/renderer/src/i18n/locales/zh.json

@@ -4584,7 +4584,6 @@
           "modalDescription": "从终端安装 Linear 技能。",
           "modalPrompt": "允许智能体读取和编辑已附加的 Linear ticket。",
           "dontShowAgain": "不再显示",
-          "notNow": "暂不",
           "missingBoth": "缺少 Orca CLI 和 Linear 智能体技能。",
           "missingCli": "缺少 Orca CLI。",
           "missingSkill": "缺少 Linear 智能体技能。",