Session 4 complete - RedFlag update management platform

🚩 Private development - version retention only

✅ Complete web dashboard (React + TypeScript + TailwindCSS)
✅ Production-ready server backend (Go + Gin + PostgreSQL)
✅ Linux agent with APT + Docker scanning + local CLI tools
✅ JWT authentication and REST API
✅ Update discovery and approval workflow

🚧 Status: Alpha software - active development
📦 Purpose: Version retention during development
⚠️  Not for public use or deployment

aggregator-agent/internal/config/config.go

@@ -0,0 +1,63 @@
+package config
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/google/uuid"
+)
+
+// Config holds agent configuration
+type Config struct {
+	ServerURL       string    `json:"server_url"`
+	AgentID         uuid.UUID `json:"agent_id"`
+	Token           string    `json:"token"`
+	CheckInInterval int       `json:"check_in_interval"`
+}
+
+// Load reads configuration from file
+func Load(configPath string) (*Config, error) {
+	// Ensure directory exists
+	dir := filepath.Dir(configPath)
+	if err := os.MkdirAll(dir, 0755); err != nil {
+		return nil, fmt.Errorf("failed to create config directory: %w", err)
+	}
+
+	// Read config file
+	data, err := os.ReadFile(configPath)
+	if err != nil {
+		if os.IsNotExist(err) {
+			// Return empty config if file doesn't exist
+			return &Config{}, nil
+		}
+		return nil, fmt.Errorf("failed to read config: %w", err)
+	}
+
+	var config Config
+	if err := json.Unmarshal(data, &config); err != nil {
+		return nil, fmt.Errorf("failed to parse config: %w", err)
+	}
+
+	return &config, nil
+}
+
+// Save writes configuration to file
+func (c *Config) Save(configPath string) error {
+	data, err := json.MarshalIndent(c, "", "  ")
+	if err != nil {
+		return fmt.Errorf("failed to marshal config: %w", err)
+	}
+
+	if err := os.WriteFile(configPath, data, 0600); err != nil {
+		return fmt.Errorf("failed to write config: %w", err)
+	}
+
+	return nil
+}
+
+// IsRegistered checks if the agent is registered
+func (c *Config) IsRegistered() bool {
+	return c.AgentID != uuid.Nil && c.Token != ""
+}