chore: clean .gitignore cache

backend/internal/models/caddy_config.go

@@ -1,14 +0,0 @@
-package models
-
-import (
-	"time"
-)
-
-// CaddyConfig stores an audit trail of Caddy configuration changes.
-type CaddyConfig struct {
-	ID         uint      `json:"id" gorm:"primaryKey"`
-	ConfigHash string    `json:"config_hash" gorm:"index"`
-	AppliedAt  time.Time `json:"applied_at"`
-	Success    bool      `json:"success"`
-	ErrorMsg   string    `json:"error_msg"`
-}