Revert "feat(ecc): prune plugin 43→12 items, promote 7 rules to .claude/rules/ (#245)"

This reverts commit 1bd68ff534.

rules/golang/coding-style.md

@@ -0,0 +1,32 @@
+---
+paths:
+  - "**/*.go"
+  - "**/go.mod"
+  - "**/go.sum"
+---
+# Go Coding Style
+
+> This file extends [common/coding-style.md](../common/coding-style.md) with Go specific content.
+
+## Formatting
+
+- **gofmt** and **goimports** are mandatory — no style debates
+
+## Design Principles
+
+- Accept interfaces, return structs
+- Keep interfaces small (1-3 methods)
+
+## Error Handling
+
+Always wrap errors with context:
+
+```go
+if err != nil {
+    return fmt.Errorf("failed to create user: %w", err)
+}
+```
+
+## Reference
+
+See skill: `golang-patterns` for comprehensive Go idioms and patterns.

rules/golang/hooks.md

@@ -0,0 +1,17 @@
+---
+paths:
+  - "**/*.go"
+  - "**/go.mod"
+  - "**/go.sum"
+---
+# Go Hooks
+
+> This file extends [common/hooks.md](../common/hooks.md) with Go specific content.
+
+## PostToolUse Hooks
+
+Configure in `~/.claude/settings.json`:
+
+- **gofmt/goimports**: Auto-format `.go` files after edit
+- **go vet**: Run static analysis after editing `.go` files
+- **staticcheck**: Run extended static checks on modified packages

rules/golang/patterns.md

@@ -0,0 +1,45 @@
+---
+paths:
+  - "**/*.go"
+  - "**/go.mod"
+  - "**/go.sum"
+---
+# Go Patterns
+
+> This file extends [common/patterns.md](../common/patterns.md) with Go specific content.
+
+## Functional Options
+
+```go
+type Option func(*Server)
+
+func WithPort(port int) Option {
+    return func(s *Server) { s.port = port }
+}
+
+func NewServer(opts ...Option) *Server {
+    s := &Server{port: 8080}
+    for _, opt := range opts {
+        opt(s)
+    }
+    return s
+}
+```
+
+## Small Interfaces
+
+Define interfaces where they are used, not where they are implemented.
+
+## Dependency Injection
+
+Use constructor functions to inject dependencies:
+
+```go
+func NewUserService(repo UserRepository, logger Logger) *UserService {
+    return &UserService{repo: repo, logger: logger}
+}
+```
+
+## Reference
+
+See skill: `golang-patterns` for comprehensive Go patterns including concurrency, error handling, and package organization.

rules/golang/security.md

@@ -0,0 +1,34 @@
+---
+paths:
+  - "**/*.go"
+  - "**/go.mod"
+  - "**/go.sum"
+---
+# Go Security
+
+> This file extends [common/security.md](../common/security.md) with Go specific content.
+
+## Secret Management
+
+```go
+apiKey := os.Getenv("OPENAI_API_KEY")
+if apiKey == "" {
+    log.Fatal("OPENAI_API_KEY not configured")
+}
+```
+
+## Security Scanning
+
+- Use **gosec** for static security analysis:
+  ```bash
+  gosec ./...
+  ```
+
+## Context & Timeouts
+
+Always use `context.Context` for timeout control:
+
+```go
+ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
+defer cancel()
+```

rules/golang/testing.md

@@ -0,0 +1,31 @@
+---
+paths:
+  - "**/*.go"
+  - "**/go.mod"
+  - "**/go.sum"
+---
+# Go Testing
+
+> This file extends [common/testing.md](../common/testing.md) with Go specific content.
+
+## Framework
+
+Use the standard `go test` with **table-driven tests**.
+
+## Race Detection
+
+Always run with the `-race` flag:
+
+```bash
+go test -race ./...
+```
+
+## Coverage
+
+```bash
+go test -cover ./...
+```
+
+## Reference
+
+See skill: `golang-testing` for detailed Go testing patterns and helpers.

rules/python/coding-style.md

@@ -0,0 +1,42 @@
+---
+paths:
+  - "**/*.py"
+  - "**/*.pyi"
+---
+# Python Coding Style
+
+> This file extends [common/coding-style.md](../common/coding-style.md) with Python specific content.
+
+## Standards
+
+- Follow **PEP 8** conventions
+- Use **type annotations** on all function signatures
+
+## Immutability
+
+Prefer immutable data structures:
+
+```python
+from dataclasses import dataclass
+
+@dataclass(frozen=True)
+class User:
+    name: str
+    email: str
+
+from typing import NamedTuple
+
+class Point(NamedTuple):
+    x: float
+    y: float
+```
+
+## Formatting
+
+- **black** for code formatting
+- **isort** for import sorting
+- **ruff** for linting
+
+## Reference
+
+See skill: `python-patterns` for comprehensive Python idioms and patterns.

rules/python/hooks.md

@@ -0,0 +1,19 @@
+---
+paths:
+  - "**/*.py"
+  - "**/*.pyi"
+---
+# Python Hooks
+
+> This file extends [common/hooks.md](../common/hooks.md) with Python specific content.
+
+## PostToolUse Hooks
+
+Configure in `~/.claude/settings.json`:
+
+- **black/ruff**: Auto-format `.py` files after edit
+- **mypy/pyright**: Run type checking after editing `.py` files
+
+## Warnings
+
+- Warn about `print()` statements in edited files (use `logging` module instead)

rules/python/patterns.md

@@ -0,0 +1,39 @@
+---
+paths:
+  - "**/*.py"
+  - "**/*.pyi"
+---
+# Python Patterns
+
+> This file extends [common/patterns.md](../common/patterns.md) with Python specific content.
+
+## Protocol (Duck Typing)
+
+```python
+from typing import Protocol
+
+class Repository(Protocol):
+    def find_by_id(self, id: str) -> dict | None: ...
+    def save(self, entity: dict) -> dict: ...
+```
+
+## Dataclasses as DTOs
+
+```python
+from dataclasses import dataclass
+
+@dataclass
+class CreateUserRequest:
+    name: str
+    email: str
+    age: int | None = None
+```
+
+## Context Managers & Generators
+
+- Use context managers (`with` statement) for resource management
+- Use generators for lazy evaluation and memory-efficient iteration
+
+## Reference
+
+See skill: `python-patterns` for comprehensive patterns including decorators, concurrency, and package organization.

rules/python/security.md

@@ -0,0 +1,30 @@
+---
+paths:
+  - "**/*.py"
+  - "**/*.pyi"
+---
+# Python Security
+
+> This file extends [common/security.md](../common/security.md) with Python specific content.
+
+## Secret Management
+
+```python
+import os
+from dotenv import load_dotenv
+
+load_dotenv()
+
+api_key = os.environ["OPENAI_API_KEY"]  # Raises KeyError if missing
+```
+
+## Security Scanning
+
+- Use **bandit** for static security analysis:
+  ```bash
+  bandit -r src/
+  ```
+
+## Reference
+
+See skill: `django-security` for Django-specific security guidelines (if applicable).

rules/python/testing.md

@@ -0,0 +1,38 @@
+---
+paths:
+  - "**/*.py"
+  - "**/*.pyi"
+---
+# Python Testing
+
+> This file extends [common/testing.md](../common/testing.md) with Python specific content.
+
+## Framework
+
+Use **pytest** as the testing framework.
+
+## Coverage
+
+```bash
+pytest --cov=src --cov-report=term-missing
+```
+
+## Test Organization
+
+Use `pytest.mark` for test categorization:
+
+```python
+import pytest
+
+@pytest.mark.unit
+def test_calculate_total():
+    ...
+
+@pytest.mark.integration
+def test_database_connection():
+    ...
+```
+
+## Reference
+
+See skill: `python-testing` for detailed pytest patterns and fixtures.