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+---
+name: daily-coding
+description: Use for everyday coding tasks that involve writing or modifying source code.
+version: 1.0.0
+tags: [Coding, Daily, Checklist]
+---
+
+# Daily Coding Checklist
+
+A minimal coding quality assurance checklist ensuring every code modification follows best practices.
+
+## When to Use
+
+Use this skill for:
+- Implementing new features
+- Adding code or modifying existing code
+- User requests like "write a...", "implement...", "add...", or "modify..."
+- Any coding task that involves Edit or Write tools
+
+## When Not to Use
+
+Do not use this skill for:
+- Pure reading or understanding tasks with no modification intent
+- Work already covered by specialized skills such as `bug-detective`, `architecture-design`, or `tdd-guide`
+- Configuration-only changes
+- Documentation-only writing
+
+## Core Checklist
+
+### Before Starting
+
+- [ ] **Read before modify** - Must read target file with Read tool before making changes
+- [ ] **Understand context** - Confirm understanding of existing code logic and design intent
+
+### During Coding
+
+- [ ] **Minimal changes** - Only change what's necessary, no over-engineering, no unrelated features
+- [ ] **Type safety** - Add type hints for Python, avoid `any` in TypeScript
+- [ ] **Security check** - Avoid command injection, XSS, SQL injection vulnerabilities
+
+### After Completion
+
+- [ ] **Verify execution** - Ensure code runs correctly with no syntax errors
+- [ ] **Clean up** - Remove print/console.log debug statements and temporary files
+- [ ] **Brief summary** - Inform user what was changed and the scope of impact
+
+## Quick Reference
+
+### Common Mistakes to Avoid
+
+```python
+# ❌ Don't
+def process(data=[]):  # Mutable default argument
+    pass
+
+# ✅ Should
+def process(data: list | None = None):
+    data = data or []
+```
+
+```python
+# ❌ Don't
+except:  # Bare except
+    pass
+
+# ✅ Should
+except ValueError as e:
+    logger.error(f"Processing failed: {e}")
+    raise
+```
+
+### Security Check Points
+
+- User input must be validated/escaped
+- Use pathlib for file paths, avoid path traversal
+- Never hardcode sensitive info (API keys, passwords)