Added API Endpoint and Admin Dashboard Endpoint

internal/config/config.go

@@ -8,15 +8,20 @@ import (
 
 // Config is the application configuration loaded from JSON.
 type Config struct {
-	Host string `json:"host"`
-	Port int    `json:"port"`
+	Host      string `json:"host"`
+	APIPort   int    `json:"api_port"`
+	AdminPort int    `json:"admin_port"`
+
+	// Port is deprecated; mapped to APIPort when api_port is unset.
+	Port int `json:"port"`
 }
 
 // Default returns sensible defaults when no config file is used.
 func Default() *Config {
 	return &Config{
-		Host: "127.0.0.1",
-		Port: 8080,
+		Host:      "127.0.0.1",
+		APIPort:   8080,
+		AdminPort: 8081,
 	}
 }
 
@@ -32,5 +37,20 @@ func Load(path string) (*Config, error) {
 		return nil, fmt.Errorf("parse config: %w", err)
 	}
 
+	cfg.applyLegacyPort()
 	return cfg, nil
 }
+
+func (c *Config) applyLegacyPort() {
+	if c.Port != 0 && c.APIPort == 8080 {
+		c.APIPort = c.Port
+	}
+}
+
+func (c *Config) APIAddr() string {
+	return fmt.Sprintf("%s:%d", c.Host, c.APIPort)
+}
+
+func (c *Config) AdminAddr() string {
+	return fmt.Sprintf("%s:%d", c.Host, c.AdminPort)
+}