feat(settings): add settings management API endpoints

- Add GET /settings/get and POST /settings/set endpoints for managing system settings
- Implement config file persistence for settings changes
- Update config schema to include notification and webhook settings
- Add API documentation for new endpoints
- Move config path variables to global package for consistency

global/global.go

@@ -4,6 +4,10 @@ import (
 	"database/sql"
 )
 
+var ConfigPath *string
+var DBPath_data *string
+var DBPath_log *string
+
 type SoftwareInfo struct {
 	Name        string
 	Version     string
@@ -49,13 +53,23 @@ type Config struct {
 		Enabled bool `json:"enabled"`
 		Port int `json:"port"`
 	} `json:"watchdog"`
+	Notification struct {
+		Enabled bool `json:"enabled"`
+		Method  string `json:"method"`
+	} `json:"notification"`
+	Webhook struct {
+		Method string `json:"method"`
+		URL    string `json:"url"`
+		Headers map[string]string `json:"headers"`
+		Body    map[string]string `json:"body"`
+	} `json:"webhook"`
 }
 
 var CurrentConfig = Config{
 	ListenAddr: "0.0.0.0",
 	ListenPort: "7000",
-	FrpcPath:   "/usr/bin/frpc",
-	InstancePath: "/var/lib/frpc",
+	FrpcPath:   "",
+	InstancePath: "",
 	Debug:        false,
 	Watchdog:     struct {
 		Enabled bool `json:"enabled"`
@@ -64,4 +78,26 @@ var CurrentConfig = Config{
 		Enabled: false,
 		Port: 0,
 	},
+	Notification: struct {
+		Enabled bool `json:"enabled"`
+		Method  string `json:"method"`
+	}{
+		Enabled: false,
+		Method:  "webhook",
+	},
+	Webhook: struct {
+		Method string `json:"method"`
+		URL    string `json:"url"`
+		Headers map[string]string `json:"headers"`
+		Body    map[string]string `json:"body"`
+	}{
+		Method: "",
+		URL:    "",
+		Headers: map[string]string{
+			"Content-Type": "",
+		},
+		Body: map[string]string{
+			"text": "",
+		},
+	},
 }