feat(project): sync engineering standards and finalize markdown-normalizer v1.2.7

- Update .github/copilot-instructions.md with latest i18n and naming standards
- Add docs/development/issue-reply-guide.md for professional community engagement
- Sync all documentation (MKDocs, READMEs, Docs) to v1.2.7
- Include CI/CD and Agent instruction templates for better automation

.markdownlint.json

@@ -0,0 +1,7 @@
+{
+    "default": true,
+    "MD013": false,
+    "MD033": false,
+    "MD030": false,
+    "MD051": false
+}