refactor: reorganize GitHub workflows with consistent naming convention

- Implement systematic naming convention using category prefixes
- Group workflows logically: ci-, pr-, release-, types-, i18n-
- Rename all 22 workflows for better organization and discoverability
- Update workflow cross-references and display names
- Add comprehensive README.md with naming guidelines and best practices

Key changes:
- CI workflows: ci-tests-e2e, ci-tests-unit, ci-tests-storybook, etc.
- PR automation: pr-backport, pr-claude-review, pr-playwright-snapshots
- Release management: release-version-bump, release-npm-types, etc.
- Type generation: types-registry-api, types-manager-api, etc.
- Internationalization: i18n-update-core, i18n-update-nodes, etc.

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

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/ci-json-validation.yaml

@@ -0,0 +1,15 @@
+name: JSON Validation CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  json-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - name: Validate JSON syntax
+        run: ./scripts/cicd/check-json.sh