chore: migrate tests from tests-ui/ to colocate with source files (#7811)

## Summary

Migrates all unit tests from `tests-ui/` to colocate with their source
files in `src/`, improving discoverability and maintainability.

## Changes

- **What**: Relocated all unit tests to be adjacent to the code they
test, following the `<source>.test.ts` naming convention
- **Config**: Updated `vitest.config.ts` to remove `tests-ui` include
pattern and `@tests-ui` alias
- **Docs**: Moved testing documentation to `docs/testing/` with updated
paths and patterns

## Review Focus

- Migration patterns documented in
`temp/plans/migrate-tests-ui-to-src.md`
- Tests use `@/` path aliases instead of relative imports
- Shared fixtures placed in `__fixtures__/` directories

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7811-chore-migrate-tests-from-tests-ui-to-colocate-with-source-files-2da6d73d36508147a4cce85365dee614)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Amp <amp@ampcode.com>
Co-authored-by: GitHub Action <action@github.com>

tests-ui/tests/components/bottomPanel/ShortcutsList.spec.ts

@@ -1,164 +0,0 @@
-import { mount } from '@vue/test-utils'
-import { describe, expect, it, vi } from 'vitest'
-
-import ShortcutsList from '@/components/bottomPanel/tabs/shortcuts/ShortcutsList.vue'
-import type { ComfyCommandImpl } from '@/stores/commandStore'
-
-// Mock vue-i18n
-const mockT = vi.fn((key: string) => {
-  const translations: Record<string, string> = {
-    'shortcuts.subcategories.workflow': 'Workflow',
-    'shortcuts.subcategories.node': 'Node',
-    'shortcuts.subcategories.queue': 'Queue',
-    'shortcuts.subcategories.view': 'View',
-    'shortcuts.subcategories.panelControls': 'Panel Controls',
-    'commands.Workflow_New.label': 'New Blank Workflow'
-  }
-  return translations[key] || key
-})
-
-vi.mock('vue-i18n', () => ({
-  useI18n: () => ({
-    t: mockT
-  })
-}))
-
-describe('ShortcutsList', () => {
-  const mockCommands: ComfyCommandImpl[] = [
-    {
-      id: 'Workflow.New',
-      label: 'New Workflow',
-      category: 'essentials',
-      keybinding: {
-        combo: {
-          getKeySequences: () => ['Control', 'n']
-        }
-      }
-    } as ComfyCommandImpl,
-    {
-      id: 'Node.Add',
-      label: 'Add Node',
-      category: 'essentials',
-      keybinding: {
-        combo: {
-          getKeySequences: () => ['Shift', 'a']
-        }
-      }
-    } as ComfyCommandImpl,
-    {
-      id: 'Queue.Clear',
-      label: 'Clear Queue',
-      category: 'essentials',
-      keybinding: {
-        combo: {
-          getKeySequences: () => ['Control', 'Shift', 'c']
-        }
-      }
-    } as ComfyCommandImpl
-  ]
-
-  const mockSubcategories = {
-    workflow: [mockCommands[0]],
-    node: [mockCommands[1]],
-    queue: [mockCommands[2]]
-  }
-
-  it('should render shortcuts organized by subcategories', () => {
-    const wrapper = mount(ShortcutsList, {
-      props: {
-        commands: mockCommands,
-        subcategories: mockSubcategories
-      }
-    })
-
-    // Check that subcategories are rendered
-    expect(wrapper.text()).toContain('Workflow')
-    expect(wrapper.text()).toContain('Node')
-    expect(wrapper.text()).toContain('Queue')
-
-    // Check that commands are rendered
-    expect(wrapper.text()).toContain('New Blank Workflow')
-  })
-
-  it('should format keyboard shortcuts correctly', () => {
-    const wrapper = mount(ShortcutsList, {
-      props: {
-        commands: mockCommands,
-        subcategories: mockSubcategories
-      }
-    })
-
-    // Check for formatted keys
-    expect(wrapper.text()).toContain('Ctrl')
-    expect(wrapper.text()).toContain('n')
-    expect(wrapper.text()).toContain('Shift')
-    expect(wrapper.text()).toContain('a')
-    expect(wrapper.text()).toContain('c')
-  })
-
-  it('should filter out commands without keybindings', () => {
-    const commandsWithoutKeybinding: ComfyCommandImpl[] = [
-      ...mockCommands,
-      {
-        id: 'No.Keybinding',
-        label: 'No Keybinding',
-        category: 'essentials',
-        keybinding: null
-      } as ComfyCommandImpl
-    ]
-
-    const wrapper = mount(ShortcutsList, {
-      props: {
-        commands: commandsWithoutKeybinding,
-        subcategories: {
-          ...mockSubcategories,
-          other: [commandsWithoutKeybinding[3]]
-        }
-      }
-    })
-
-    expect(wrapper.text()).not.toContain('No Keybinding')
-  })
-
-  it('should handle special key formatting', () => {
-    const specialKeyCommand: ComfyCommandImpl = {
-      id: 'Special.Keys',
-      label: 'Special Keys',
-      category: 'essentials',
-      keybinding: {
-        combo: {
-          getKeySequences: () => ['Meta', 'ArrowUp', 'Enter', 'Escape', ' ']
-        }
-      }
-    } as ComfyCommandImpl
-
-    const wrapper = mount(ShortcutsList, {
-      props: {
-        commands: [specialKeyCommand],
-        subcategories: {
-          special: [specialKeyCommand]
-        }
-      }
-    })
-
-    const text = wrapper.text()
-    expect(text).toContain('Cmd') // Meta -> Cmd
-    expect(text).toContain('↑') // ArrowUp -> ↑
-    expect(text).toContain('↵') // Enter -> ↵
-    expect(text).toContain('Esc') // Escape -> Esc
-    expect(text).toContain('Space') // ' ' -> Space
-  })
-
-  it('should use fallback subcategory titles', () => {
-    const wrapper = mount(ShortcutsList, {
-      props: {
-        commands: mockCommands,
-        subcategories: {
-          unknown: [mockCommands[0]]
-        }
-      }
-    })
-
-    expect(wrapper.text()).toContain('unknown')
-  })
-})