feat/fix: App mode QA feedback 2 (#9511)

## Summary

Additional fixes and updates based on testing

## Changes

- **What**: 
- add warning to welcome screen & when sharing an app that has had all
outputs removed
- fix target workflow when changing mode via tab right click menu
- change build app text to be conditional "edit" vs "build" depending on
if an app is already defined
- update empty apps sidebar tab button text to make it clearer
- remove templates button from app mode (we will reintroduce this once
we have app templates)
- add "exit to graph" after applying default mode of node graph
- update cancel button to remove item from queue if it hasn't started
yet
- improve scoping of jobs/outputs to the current workflow [not perfect
but should be much improved]
- close sidebar tabs on entering app mode
- change tooltip to be under the workflow menu rather than covering the
button

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9511-feat-fix-App-mode-QA-feedback-2-31b6d73d365081d59bbbc13111100d46)
by [Unito](https://www.unito.io)

src/renderer/extensions/linearMode/linearOutputStore.test.ts

@@ -124,6 +124,7 @@ describe('linearOutputStore', () => {
 
   it('auto-selects skeleton on first job start when no selection', () => {
     const store = useLinearOutputStore()
+    setJobWorkflowPath('job-1', 'workflows/test-workflow.json')
     store.onJobStart('job-1')
 
     expect(store.selectedId).toBe(`slot:${store.inProgressItems[0].id}`)
@@ -132,6 +133,7 @@ describe('linearOutputStore', () => {
   it('transitions to latent on preview', () => {
     vi.useFakeTimers()
     const store = useLinearOutputStore()
+    setJobWorkflowPath('job-1', 'workflows/test-workflow.json')
     store.onJobStart('job-1')
 
     const itemId = store.inProgressItems[0].id
@@ -265,6 +267,7 @@ describe('linearOutputStore', () => {
     // selectAsLatest simulates "following the latest output"
     store.selectAsLatest('history:asset-1:0')
 
+    setJobWorkflowPath('job-1', 'workflows/test-workflow.json')
     store.onJobStart('job-1')
 
     // Following latest → auto-select new skeleton
@@ -286,6 +289,7 @@ describe('linearOutputStore', () => {
 
   it('falls back selection when selected item is removed', () => {
     const store = useLinearOutputStore()
+    setJobWorkflowPath('job-1', 'workflows/test-workflow.json')
     store.onJobStart('job-1')
     const firstId = `slot:${store.inProgressItems[0].id}`
     expect(store.selectedId).toBe(firstId)
@@ -400,6 +404,8 @@ describe('linearOutputStore', () => {
 
   it('two sequential runs: selection clears after each resolve', () => {
     const store = useLinearOutputStore()
+    setJobWorkflowPath('job-1', 'workflows/test-workflow.json')
+    setJobWorkflowPath('job-2', 'workflows/test-workflow.json')
 
     // Run 1: 3 outputs
     store.onJobStart('job-1')
@@ -738,6 +744,34 @@ describe('linearOutputStore', () => {
     expect(imageItems[0].output?.nodeId).toBe('2')
   })
 
+  it('does not auto-select for jobs belonging to another workflow', () => {
+    const store = useLinearOutputStore()
+
+    // User is on workflow-b, following latest
+    activeWorkflowPathRef.value = 'workflows/app-b.json'
+    store.selectAsLatest('history:asset-b:0')
+
+    // Job from workflow-a starts
+    setJobWorkflowPath('job-1', 'workflows/app-a.json')
+    store.onJobStart('job-1')
+
+    // Should NOT yank selection to the other workflow's slot
+    expect(store.selectedId).toBe('history:asset-b:0')
+  })
+
+  it('auto-selects for jobs belonging to the active workflow', () => {
+    const store = useLinearOutputStore()
+
+    activeWorkflowPathRef.value = 'workflows/app-a.json'
+    store.selectAsLatest('history:asset-a:0')
+
+    setJobWorkflowPath('job-1', 'workflows/app-a.json')
+    store.onJobStart('job-1')
+
+    // Should auto-select since job matches active workflow
+    expect(store.selectedId?.startsWith('slot:')).toBe(true)
+  })
+
   it('ignores execution events when not in app mode', async () => {
     const { nextTick } = await import('vue')
     const store = useLinearOutputStore()