Update pr template (#1605)

* Update pr template

* Add prompts tested section to PR template (#1617)

* Initial plan

* Add prompts tested section to PR template for tool changes

Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: JoannaaKL <67866556+JoannaaKL@users.noreply.github.com>

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Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>

Author: JoannaaKL

.github/pull_request_template.md

@@ -1,11 +1,44 @@
 <!--
-    Thank you for contributing to GitHub MCP Server!
-    Please reference an existing issue: `Closes #NUMBER`
-
-    Screenshots or videos of changed behavior is incredibly helpful and always appreciated.
-    Consider addressing the following:
-    - Tradeoffs: List tradeoffs you made to take on or pay down tech debt.
-    - Alternatives: Describe alternative approaches you considered and why you discarded them.
+Copilot: Fill all sections. Prefer short, concrete answers.
+If a checkbox is selected, add a brief explanation.
 -->
 
-Closes:
+## Summary
+<!-- In 1–2 sentences: what does this PR do? -->
+
+## Why
+<!-- Why is this change needed? Link issues or discussions. -->
+Fixes #
+
+## What changed
+<!-- Bullet list of concrete changes. -->
+- 
+- 
+
+## MCP impact
+<!-- Select one or more. If selected, add 1–2 sentences. -->
+- [ ] No tool or API changes
+- [ ] Tool schema or behavior changed
+- [ ] New tool added
+
+## Prompts tested (tool changes only)
+<!-- If you changed or added tools, list example prompts you tested. -->
+<!-- Include prompts that trigger the tool and describe the use case. -->
+<!-- Example: "List all open issues in the repo assigned to me" -->
+- 
+
+## Security / limits
+<!-- Select if relevant. Add a short note if checked. -->
+- [ ] No security or limits impact
+- [ ] Auth / permissions considered
+- [ ] Data exposure, filtering, or token/size limits considered
+
+## Lint & tests
+<!-- Check what you ran. If not run, explain briefly. -->
+- [ ] Linted locally with `./script/lint`
+- [ ] Tested locally with `./script/test`
+
+## Docs
+
+- [ ] Not needed
+- [ ] Updated (README / docs / examples)