Initial upload with CI/CD workflow

src/config.py

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+"""Configuration management for Code Pattern Search CLI."""
+
+import os
+from pathlib import Path
+from typing import Optional
+from dataclasses import dataclass
+
+
+@dataclass
+class Config:
+    """Configuration settings for the CLI."""
+
+    cache_dir: Optional[Path] = None
+    cache_ttl: int = 3600
+    token: Optional[str] = None
+    verbose: bool = False
+    default_repos: int = 10
+    max_repos: int = 100
+    request_timeout: int = 30
+    rate_limit_retries: int = 3
+    retry_backoff_factor: float = 0.5
+
+    def __post_init__(self) -> None:
+        """Post-initialization processing."""
+        if self.cache_dir is None:
+            self.cache_dir = self._default_cache_dir()
+
+    def _default_cache_dir(self) -> Path:
+        """Get default cache directory."""
+        return Path.home() / ".cache" / "code-pattern-search"
+
+    @classmethod
+    def from_env(cls) -> "Config":
+        """Create configuration from environment variables."""
+        cache_dir = os.getenv("CPS_CACHE_DIR")
+        cache_ttl = os.getenv("CPS_CACHE_TTL")
+
+        return cls(
+            cache_dir=Path(cache_dir) if cache_dir else None,
+            cache_ttl=int(cache_ttl) if cache_ttl else 3600,
+            token=os.getenv("GITHUB_TOKEN"),
+        )
+
+    def get_cache_dir(self) -> Path:
+        """Get the cache directory, creating it if necessary."""
+        if self.cache_dir:
+            self.cache_dir.mkdir(parents=True, exist_ok=True)
+            return self.cache_dir
+        default_dir = self._default_cache_dir()
+        default_dir.mkdir(parents=True, exist_ok=True)
+        return default_dir