chore: Initial commit

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XPovRHpejR4zRxuhjY4Qs3

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,32 @@
+---
+name: Bug report
+about: Report a reproducible bug in MeshCore SAR App
+title: "[Bug]: "
+labels: [bug]
+assignees: []
+---
+
+## Summary
+A short description of the problem.
+
+## Reported context
+Where this was observed (build/version, environment, device model, logs, links).
+
+## Steps to reproduce
+1. 
+2. 
+3. 
+
+## Expected behavior
+What should happen.
+
+## Actual behavior
+What actually happens.
+
+## Impact
+Why this matters (user impact, risk, severity).
+
+## Acceptance criteria
+- [ ] Repro case is fixed.
+- [ ] Behavior matches expected result.
+- [ ] Regression coverage is added/updated.