Improve MCP startup flow and repo automation

.github/pull_request_template.md

@@ -0,0 +1,14 @@
+## What changed
+
+- Describe the change briefly
+- Explain the user impact or motivation
+
+## Checklist
+
+- [ ] I tested the extension in a clean Cocos Creator 3.8+ project
+- [ ] I verified `Funplay > MCP Server` opens and the MCP server can start correctly
+- [ ] If I changed setup, one-click config, or port/config behavior, I verified the affected flow end-to-end
+- [ ] I ran `npm run check`
+- [ ] I updated docs for any user-facing behavior changes
+- [ ] I did not commit local junk such as `.DS_Store`, `temp/`, or `library/`
+- [ ] I updated `CHANGELOG.md` when the change affects users