Set up GitHub repo documentation and governance

.github/pull_request_template.md

@@ -60,6 +60,77 @@ If no user-facing changelog entry is needed, apply the skip-changelog label to t
 
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+## Risk Assessment
+
+<!--
+Evaluate the risk level of this PR and potential impact on production.
+This helps reviewers prioritize and determine the appropriate review rigor.
+-->
+
+**Risk Level:** <!-- Choose one: Low | Medium | High | Critical -->
+
+**Potential Impact:**
+<!-- Describe what could go wrong if this change has bugs. Examples:
+- Low: Typo in documentation, minor style tweak
+- Medium: New feature in isolated component, refactor with test coverage
+- High: Changes to core authentication, database schema changes
+- Critical: Payment processing, security fixes, data migrations
+-->
+
+**Mitigation Steps:**
+<!-- What steps have been taken to reduce risk? Examples:
+- Comprehensive test coverage (unit, integration, E2E)
+- Feature flag for gradual rollout
+- Tested in staging environment
+- Reversible database migration
+- Monitoring and alerting in place
+-->
+
+---
+
+## How to Test
+
+<!--
+Provide clear, step-by-step instructions for testing this PR.
+Include:
+- Prerequisites (data setup, feature flags, environment variables)
+- User flows to test
+- Expected results for each step
+- Edge cases to verify
+- Screenshots or videos demonstrating the changes (for UI changes)
+-->
+
+### Prerequisites
+
+<!-- Example:
+- Create a test user account
+- Enable feature flag: `FEATURE_NEW_DASHBOARD=true`
+- Seed database with sample data: `npm run db:seed`
+-->
+
+### Test Steps
+
+1. **Step 1:** <!-- Describe action and expected result -->
+2. **Step 2:** <!-- Describe action and expected result -->
+3. **Step 3:** <!-- Describe action and expected result -->
+
+### Expected Results
+
+<!-- Describe what success looks like. Include screenshots or videos for UI changes. -->
+
+### Edge Cases to Verify
+
+<!-- List edge cases that should be tested. Examples:
+- [ ] Empty state (no data)
+- [ ] Maximum data (performance test)
+- [ ] Error handling (network failure, invalid input)
+- [ ] Mobile/responsive design
+- [ ] Accessibility (keyboard navigation, screen reader)
+- [ ] Browser compatibility (Chrome, Firefox, Safari)
+-->
+
+---
+
 ### Checklist (Global DoD / PR)
 
 - [ ] All AC met and demonstrated
@@ -69,6 +140,8 @@ If no user-facing changelog entry is needed, apply the skip-changelog label to t
 - [ ] Security/perf impact reviewed where relevant
 - [ ] Code/design reviews approved
 - [ ] CI green; linked issues closed; release notes prepared (if shipping)
+- [ ] Risk assessment completed above
+- [ ] Testing instructions provided above
 
 ---