refactor(rules): restructure into common + language-specific directories

* refactor(rules): restructure rules into common + language-specific directories

- Split 8 flat rule files into common/, typescript/, python/, golang/
- common/ contains language-agnostic principles (no code examples)
- typescript/ extracts TS/JS specifics (Zod, Playwright, Prettier hooks, etc.)
- python/ adds Python rules (PEP 8, pytest, black/ruff, bandit)
- golang/ adds Go rules (gofmt, table-driven tests, gosec, functional options)
- Replace deprecated ultrathink with extended thinking documentation
- Add README.md with installation guide and new-language template

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Fix installation commands for rules

Updated installation instructions to copy all rules to a single directory.

* docs: update README.md to reflect new rules directory structure

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Hor1zonZzz <Hor1zonZzz@users.noreply.github.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

rules/typescript/coding-style.md

@@ -0,0 +1,58 @@
+# TypeScript/JavaScript Coding Style
+
+> This file extends [common/coding-style.md](../common/coding-style.md) with TypeScript/JavaScript specific content.
+
+## Immutability
+
+Use spread operator for immutable updates:
+
+```typescript
+// WRONG: Mutation
+function updateUser(user, name) {
+  user.name = name  // MUTATION!
+  return user
+}
+
+// CORRECT: Immutability
+function updateUser(user, name) {
+  return {
+    ...user,
+    name
+  }
+}
+```
+
+## Error Handling
+
+Use async/await with try-catch:
+
+```typescript
+try {
+  const result = await riskyOperation()
+  return result
+} catch (error) {
+  console.error('Operation failed:', error)
+  throw new Error('Detailed user-friendly message')
+}
+```
+
+## Input Validation
+
+Use Zod for schema-based validation:
+
+```typescript
+import { z } from 'zod'
+
+const schema = z.object({
+  email: z.string().email(),
+  age: z.number().int().min(0).max(150)
+})
+
+const validated = schema.parse(input)
+```
+
+## Console.log
+
+- No `console.log` statements in production code
+- Use proper logging libraries instead
+- See hooks for automatic detection

rules/typescript/hooks.md

@@ -0,0 +1,15 @@
+# TypeScript/JavaScript Hooks
+
+> This file extends [common/hooks.md](../common/hooks.md) with TypeScript/JavaScript specific content.
+
+## PostToolUse Hooks
+
+Configure in `~/.claude/settings.json`:
+
+- **Prettier**: Auto-format JS/TS files after edit
+- **TypeScript check**: Run `tsc` after editing `.ts`/`.tsx` files
+- **console.log warning**: Warn about `console.log` in edited files
+
+## Stop Hooks
+
+- **console.log audit**: Check all modified files for `console.log` before session ends

rules/typescript/patterns.md

@@ -0,0 +1,45 @@
+# TypeScript/JavaScript Patterns
+
+> This file extends [common/patterns.md](../common/patterns.md) with TypeScript/JavaScript specific content.
+
+## API Response Format
+
+```typescript
+interface ApiResponse<T> {
+  success: boolean
+  data?: T
+  error?: string
+  meta?: {
+    total: number
+    page: number
+    limit: number
+  }
+}
+```
+
+## Custom Hooks Pattern
+
+```typescript
+export function useDebounce<T>(value: T, delay: number): T {
+  const [debouncedValue, setDebouncedValue] = useState<T>(value)
+
+  useEffect(() => {
+    const handler = setTimeout(() => setDebouncedValue(value), delay)
+    return () => clearTimeout(handler)
+  }, [value, delay])
+
+  return debouncedValue
+}
+```
+
+## Repository Pattern
+
+```typescript
+interface Repository<T> {
+  findAll(filters?: Filters): Promise<T[]>
+  findById(id: string): Promise<T | null>
+  create(data: CreateDto): Promise<T>
+  update(id: string, data: UpdateDto): Promise<T>
+  delete(id: string): Promise<void>
+}
+```

rules/typescript/security.md

@@ -0,0 +1,21 @@
+# TypeScript/JavaScript Security
+
+> This file extends [common/security.md](../common/security.md) with TypeScript/JavaScript specific content.
+
+## Secret Management
+
+```typescript
+// NEVER: Hardcoded secrets
+const apiKey = "sk-proj-xxxxx"
+
+// ALWAYS: Environment variables
+const apiKey = process.env.OPENAI_API_KEY
+
+if (!apiKey) {
+  throw new Error('OPENAI_API_KEY not configured')
+}
+```
+
+## Agent Support
+
+- Use **security-reviewer** skill for comprehensive security audits

rules/typescript/testing.md

@@ -0,0 +1,11 @@
+# TypeScript/JavaScript Testing
+
+> This file extends [common/testing.md](../common/testing.md) with TypeScript/JavaScript specific content.
+
+## E2E Testing
+
+Use **Playwright** as the E2E testing framework for critical user flows.
+
+## Agent Support
+
+- **e2e-runner** - Playwright E2E testing specialist