feat: HTTP panel on :8000 with first admin setup

internal/config/config.go

@@ -7,6 +7,7 @@ import (
 
 type Config struct {
 	DatabaseURL string
+	HTTPPort    string
 }
 
 func Load() (*Config, error) {
@@ -14,5 +15,14 @@ func Load() (*Config, error) {
 	if url == "" {
 		return nil, fmt.Errorf("DATABASE_URL is required")
 	}
-	return &Config{DatabaseURL: url}, nil
+
+	port := os.Getenv("HTTP_PORT")
+	if port == "" {
+		port = "8000"
+	}
+
+	return &Config{
+		DatabaseURL: url,
+		HTTPPort:    port,
+	}, nil
 }