Upgrades to Live and API Caching

internal/api/client.go

@@ -7,15 +7,27 @@ import (
 
 type OpenF1Client struct {
 	url        string
+	apiKey     string
 	httpClient *http.Client
-	cache      *FileCache
+	cache      *Cache
 }
 
 func NewOpenF1Client(url string, timeout time.Duration) *OpenF1Client {
 	return &OpenF1Client{
 		url:        url,
 		httpClient: &http.Client{Timeout: timeout},
-		cache:      NewFileCache(),
+		cache:      NewCache(),
+	}
+}
+
+// NewOpenF1ClientWithKey creates a client that authenticates with a Bearer token.
+// This allows access during live sessions (paid tier).
+func NewOpenF1ClientWithKey(url string, timeout time.Duration, apiKey string) *OpenF1Client {
+	return &OpenF1Client{
+		url:        url,
+		apiKey:     apiKey,
+		httpClient: &http.Client{Timeout: timeout},
+		cache:      NewCache(),
 	}
 }
 
@@ -28,3 +40,8 @@ func (c *OpenF1Client) CacheStats() CacheStats {
 func (c *OpenF1Client) CacheSize() (int, int64) {
 	return c.cache.Size()
 }
+
+// Close releases resources held by the client (closes the cache database).
+func (c *OpenF1Client) Close() error {
+	return c.cache.Close()
+}