chore(repo): consolidate documentation and structure

.github/pull_request_template.md

@@ -0,0 +1,17 @@
+## What changed
+
+Describe the user-visible or protocol-visible result and why this owner is the right place for it.
+
+## Risk
+
+- Compatibility impact:
+- Storage or migration impact:
+- Authentication, authorization, or secret-handling impact:
+
+## Verification
+
+List the focused checks and affected Release/WebUI lanes you ran. Do not include credentials, private URLs, provider payloads, or generated logs.
+
+- [ ] Focused automated coverage passes
+- [ ] Documentation is updated when behavior or setup changed
+- [ ] The diff contains no generated artifacts or unrelated edits