refactor: reorganize GitHub workflows with consistent naming convention (#5891)

## Summary

This PR implements a systematic naming convention for all GitHub
workflows to improve organization and discoverability. All 22 workflows
have been renamed and grouped by logical categories with consistent
prefixes.

## Changes

### Naming Convention
- **`ci-*`**: Continuous Integration workflows (testing, linting,
validation)
- **`pr-*`**: PR-specific automation triggered by labels  
- **`release-*`**: Release management workflows
- **`types-*`**: TypeScript type generation workflows
- **`i18n-*`**: Internationalization workflows

### Key Renames
- `tests-ci.yaml` → `ci-tests-e2e.yaml`
- `vitest-tests.yaml` → `ci-tests-unit.yaml`
- `storybook-and-chromatic-ci.yaml` → `ci-tests-storybook.yaml`
- `auto-backport.yaml` → `pr-backport.yaml`
- `claude-pr-review.yml` → `pr-claude-review.yaml`
- `version-bump.yaml` → `release-version-bump.yaml`
- `publish-frontend-types.yaml` → `release-npm-types.yaml`
- `create-dev-pypi-package.yaml` → `release-pypi-dev.yaml`

### Test Workflow Improvements
- Grouped all test workflows under `ci-tests-*` pattern
- Fork-safe deployment workflows: `ci-tests-e2e-forks.yaml`,
`ci-tests-storybook-forks.yaml`
- Added comments explaining fork deployment security workarounds

### Documentation
- Added comprehensive `.github/workflows/README.md`
- Documents naming conventions, best practices, and workflow
organization
- Includes trigger patterns and external dependencies

## Benefits

1. **Better Organization**: Workflows are now grouped logically by
prefix
2. **Improved Discoverability**: Easy to find related workflows  
3. **Consistent Naming**: All workflows follow the same pattern
4. **Clear Purpose**: Workflow names immediately indicate their function
5. **Maintainable**: README provides guidelines for future workflows

## Test Plan

- [x] All workflow cross-references updated
- [x] Display names match new file names  
- [x] Fork deployment workflows properly reference main workflows
- [x] Release workflows reference correct npm types workflow
- [x] All workflows retain original functionality

🤖 Generated with [Claude Code](https://claude.ai/code)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5891-refactor-reorganize-GitHub-workflows-with-consistent-naming-convention-2806d73d365081febe47c7511bf0507e)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Alexander Brown <drjkl@comfy.org>

.github/workflows/ci-tests-unit.yaml

@@ -0,0 +1,49 @@
+name: "CI: Tests Unit"
+description: "Unit and component testing with Vitest"
+
+on:
+  push:
+    branches: [main, master, dev*, core/*, desktop/*]
+  pull_request:
+    branches-ignore: [wip/*, draft/*, temp/*]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v5
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10
+
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "lts/*"
+          cache: "pnpm"
+
+      - name: Cache tool outputs
+        uses: actions/cache@v4
+        with:
+          path: |
+            .cache
+            coverage
+            .vitest-cache
+          key: vitest-cache-${{ runner.os }}-${{ hashFiles('**/pnpm-lock.yaml') }}-${{ hashFiles('src/**/*.{ts,vue,js}', 'vitest.config.*', 'tsconfig.json') }}
+          restore-keys: |
+            vitest-cache-${{ runner.os }}-${{ hashFiles('**/pnpm-lock.yaml') }}-
+            vitest-cache-${{ runner.os }}-
+            test-tools-cache-${{ runner.os }}-
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Run Vitest tests
+        run: pnpm test:unit