feat: improved the Claude Kit as a plugin

skills/refactoring/references/patterns.md

@@ -0,0 +1,93 @@
+# Refactoring Patterns
+
+## Extract Function
+
+Pull cohesive logic into a named function.
+
+```python
+# Before
+def process_order(order):
+    # validate
+    if not order.items:
+        raise ValueError("Empty order")
+    if order.total < 0:
+        raise ValueError("Negative total")
+    # ... 50 more lines
+
+# After
+def validate_order(order):
+    if not order.items:
+        raise ValueError("Empty order")
+    if order.total < 0:
+        raise ValueError("Negative total")
+
+def process_order(order):
+    validate_order(order)
+    # ... rest of processing
+```
+
+## Introduce Parameter Object
+
+Group 4+ related parameters into a single object.
+
+```typescript
+// Before
+function createUser(name: string, email: string, age: number, role: string) { ... }
+
+// After
+interface CreateUserInput {
+  name: string;
+  email: string;
+  age: number;
+  role: string;
+}
+function createUser(input: CreateUserInput) { ... }
+```
+
+## Replace Conditional with Polymorphism
+
+```typescript
+// Before
+function getPrice(type: string, base: number): number {
+  if (type === 'premium') return base * 0.8;
+  if (type === 'bulk') return base * 0.7;
+  return base;
+}
+
+// After
+const pricingStrategies: Record<string, (base: number) => number> = {
+  premium: (base) => base * 0.8,
+  bulk: (base) => base * 0.7,
+  standard: (base) => base,
+};
+function getPrice(type: string, base: number): number {
+  return (pricingStrategies[type] ?? pricingStrategies.standard)(base);
+}
+```
+
+## Decompose Conditional
+
+```python
+# Before
+if age > 18 and not banned and verified and subscription_active:
+    grant_access()
+
+# After
+def is_eligible(user):
+    return user.age > 18 and not user.banned and user.verified and user.subscription_active
+
+if is_eligible(user):
+    grant_access()
+```
+
+## Extract Variable
+
+```typescript
+// Before
+if (order.total > 100 && order.items.length > 5 && !order.hasDiscount) { ... }
+
+// After
+const isLargeOrder = order.total > 100 && order.items.length > 5;
+const qualifiesForDiscount = isLargeOrder && !order.hasDiscount;
+if (qualifiesForDiscount) { ... }
+```