refactor to MariaDB-only runtime and simplify PriceForge

internal/handlers/setup.go

@@ -14,8 +14,8 @@ import (
 	qfassets "git.mchus.pro/mchus/priceforge"
 	"git.mchus.pro/mchus/priceforge/internal/db"
 	"git.mchus.pro/mchus/priceforge/internal/localdb"
-	mysqlDriver "github.com/go-sql-driver/mysql"
 	"github.com/gin-gonic/gin"
+	mysqlDriver "github.com/go-sql-driver/mysql"
 	gormmysql "gorm.io/driver/mysql"
 	"gorm.io/gorm"
 	"gorm.io/gorm/logger"
@@ -211,11 +211,13 @@ func (h *SetupHandler) SaveConnection(c *gin.Context) {
 		existingSettings.User != user ||
 		existingSettings.PasswordEncrypted != password
 
-	restartQueued := settingsChanged && h.restartSig != nil
+	// Always restart after successful save in normal mode so handlers are reinitialized
+	// with a fresh MariaDB connection state.
+	restartQueued := h.restartSig != nil
 	c.JSON(http.StatusOK, gin.H{
 		"success":          true,
 		"message":          "Settings saved.",
-		"restart_required": settingsChanged,
+		"restart_required": settingsChanged || restartQueued,
 		"restart_queued":   restartQueued,
 	})