Vendor GitHub issue templates from shared

Bug report and feature request templates, drift-checked against the
canonical copies in shared/issue-templates/.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: JPercival

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,25 @@
+---
+name: Bug report
+about: Report something that isn't working as expected
+title: ''
+labels: bug
+---
+
+## What happened?
+
+<!-- A clear description of the bug. -->
+
+## What did you expect to happen?
+
+## How can we reproduce it?
+
+<!-- Minimal steps. A code snippet, failing test, or small repo is best. -->
+
+## Environment
+
+- Version / commit:
+- OS / runtime:
+
+## Anything else?
+
+<!-- Logs, screenshots, related issues — optional. -->

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea or enhancement
+title: ''
+labels: enhancement
+---
+
+## What's the problem or use case?
+
+<!-- What are you trying to do? Why does the current behavior fall short? -->
+
+## Proposed solution
+
+<!-- Optional. What you'd like to see happen. -->
+
+## Alternatives considered
+
+<!-- Optional. Other approaches you've thought about. -->
+
+## Additional context