docs: add pull request review checklist

tech-standards/standard-PR-review-checklist.md

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+# Standard PR Review Checklist
+
+## PR Meta Information
+
+- **PR Title**: Ensure the PR title is clear, concise, and adheres to the project's naming standards (e.g., `[Feature] Add X`, `[Bugfix] Fix Y`, `[Refactor] Z`).
+- **Description**: Include a detailed description explaining:
+  - What the PR does.
+  - Why the changes are necessary.
+  - Links to related issues, tickets, or tasks (if applicable).
+- **Checklist in Description (Optional)**: Include a checklist of tasks completed (if the project uses task checklists).
+- **Reviewer Assignment**: The PR must be assigned to at least one reviewer.
+- **Labels/Tags (Optional)**: Ensure the PR has appropriate labels/tags (e.g., `Bugfix`, `Feature`, `Documentation`).
+
+## Code Changes
+
+- **Scope of Changes**:
+  - PR should contain changes related to only one feature, bugfix, or task.
+  - Avoid mixing multiple unrelated changes in one PR.
+- **Clean Code**:
+  - Code should follow the project's coding standards (naming conventions, indentation, spacing).
+  - Ensure proper formatting (auto-format code if tools are available).
+- **No Repetition**: Avoid duplicate code; refactor into reusable functions or components where possible.
+- **No Hardcoded Values**: Replace hardcoded values with constants, environment variables, or configurations.
+
+## Quality and Best Practices
+
+- **Tests**:
+  - Ensure unit tests or integration tests are added/updated for the feature or bugfix.
+  - Run all tests and confirm they pass locally.
+- **Linting and Static Analysis**:
+  - Code should pass all linting checks (e.g., ESLint, Flake8, etc.).
+  - Resolve any warnings or errors flagged by static analysis tools.
+- **Error Handling**: Ensure proper error handling is implemented (avoid swallowing errors silently).
+- **Performance Considerations**: Check for code efficiency (e.g., avoid unnecessary loops, database queries, or API calls).
+
+## Compliance
+
+- **CI/CD Pipelines**:
+  - Ensure all CI pipelines (builds, tests, deployments) pass successfully.
+  - Attach a CI screenshot if the pipelines aren't integrated into the PR system.
+- **Security**:
+  - Verify no sensitive information (API keys, passwords, etc.) is exposed in the code or configuration.
+  - Check for usage of secure methods and libraries.
+- **Backward Compatibility**: Ensure the changes don't break existing functionality or introduce regressions.
+
+## Documentation and UI
+
+- **Documentation (Optional)**: Update relevant documentation (e.g., README, API documentation, comments) for new features or changes.
+- **Screenshots/Videos (Optional)**:
+  - Add screenshots or video recordings for UI changes (if applicable).
+  - Ensure the UI matches the design and is responsive on different screen sizes.
+
+## Miscellaneous
+
+- **Dead Code**: Remove any unused code, variables, or imports.
+- **Debugging Artifacts**: Ensure no debugging code (e.g., `console.log`, `print`) is left in the codebase.
+- **Dependencies (Optional)**:
+  - Verify no unnecessary or outdated dependencies are introduced.
+  - Lock file changes (e.g., `package-lock.json`, `requirements.txt`) should be reviewed.
+
+## Final Checks
+
+- **Self-Review**: The developer submitting the PR must perform a thorough self-review before assigning it to a reviewer.
+- **Cross-Environment Testing (Optional)**: Confirm the changes work in multiple environments (e.g., dev, staging, production).
+- **Feature Flags (Optional)**: Ensure new features are behind feature flags if they are not fully ready for release.