Introduce .claude directory and instructions for writing PRs using our PR template. (#180)

Author: jhodapp

.claude/pr-instructions.md

@@ -0,0 +1,12 @@
+# Pull Request Instructions
+
+When creating pull requests for this repository:
+
+1. Always use the template found in `.github/pull_request_template.md`
+2. Output the PR description in a markdown code block for easy copying
+3. Keep descriptions concise and focused
+4. Only include sections that are relevant to the changes
+5. For UI changes, always specify what screenshots would be helpful
+6. Always output the pull request text as markdown format
+
+The template is located at: `.github/pull_request_template.md`