chore: add contribution governance docs and dotenv dependency

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,52 @@
+---
+name: Bug report
+about: Report a reproducible bug in OpenFrame
+title: "bug: "
+labels: [bug]
+assignees: []
+---
+
+## Bug summary
+
+What went wrong?
+
+## Steps to reproduce
+
+1.
+2.
+3.
+
+## Expected behavior
+
+What should have happened?
+
+## Actual behavior
+
+What happened instead?
+
+## Environment
+
+- OpenFrame version/branch:
+- Bun version:
+- Node version:
+- Browser (if UI issue):
+- OS:
+
+## Relevant logs/errors
+
+```text
+Paste error logs, stack traces, or API errors here.
+```
+
+## Scope and impact
+
+- [ ] Blocking
+- [ ] High
+- [ ] Medium
+- [ ] Low
+
+Who is affected and how?
+
+## Additional context
+
+Screenshots, recordings, or links.