feat(i18n): Enhance internationalization support and error handling messages

- Added i18n keys for various error and info messages related to task management, user handling, and storage operations.
- Updated error messages in the watch and task handling commands to use i18n for better localization.
- Refactored error handling in the database initialization and user synchronization processes to provide clearer messages.
- Improved logging messages for better clarity and consistency across the application.
- Added comprehensive documentation for AI collaboration and project structure in the repository.

client/bot/handlers/cancel_task.go

@@ -8,20 +8,24 @@ import (
 	"github.com/charmbracelet/log"
 	"github.com/gotd/td/tg"
 	"github.com/krau/SaveAny-Bot/client/bot/handlers/utils/msgelem"
+	"github.com/krau/SaveAny-Bot/common/i18n"
+	"github.com/krau/SaveAny-Bot/common/i18n/i18nk"
 	"github.com/krau/SaveAny-Bot/core"
 )
 
 func handleCancelCallback(ctx *ext.Context, update *ext.Update) error {
 	taskid := strings.Split(string(update.CallbackQuery.Data), " ")[1]
 	if err := core.CancelTask(ctx, taskid); err != nil {
-		log.FromContext(ctx).Errorf("error cancelling task %s: %v", taskid, err)
-		ctx.AnswerCallback(msgelem.AlertCallbackAnswer(update.CallbackQuery.GetQueryID(), "取消任务失败: "+err.Error()))
+		log.FromContext(ctx).Errorf("Failed to cancel task %s: %v", taskid, err)
+		ctx.AnswerCallback(msgelem.AlertCallbackAnswer(update.CallbackQuery.GetQueryID(), i18n.T(i18nk.BotMsgCancelErrorCancelFailed, map[string]any{
+			"Error": err.Error(),
+		})))
 		return dispatcher.EndGroups
 	}
 
 	ctx.EditMessage(update.CallbackQuery.GetUserID(), &tg.MessagesEditMessageRequest{
 		ID:      update.CallbackQuery.GetMsgID(),
-		Message: "正在取消任务...",
+		Message: i18n.T(i18nk.BotMsgCancelInfoCancellingTask, nil),
 	})
 
 	return dispatcher.EndGroups
@@ -31,15 +35,19 @@ func handleCancelCmd(ctx *ext.Context, update *ext.Update) error {
 	logger := log.FromContext(ctx)
 	args := strings.Fields(update.EffectiveMessage.Text)
 	if len(args) < 2 {
-		ctx.Reply(update, ext.ReplyTextString("用法: /cancel <task_id>"), nil)
+		ctx.Reply(update, ext.ReplyTextString(i18n.T(i18nk.BotMsgCancelUsage, nil)), nil)
 		return dispatcher.EndGroups
 	}
 	taskID := args[1]
 	if err := core.CancelTask(ctx, taskID); err != nil {
 		logger.Errorf("failed to cancel task %s: %v", taskID, err)
-		ctx.Reply(update, ext.ReplyTextString("取消任务失败: "+err.Error()), nil)
+		ctx.Reply(update, ext.ReplyTextString(i18n.T(i18nk.BotMsgCancelErrorCancelFailed, map[string]any{
+			"Error": err.Error(),
+		})), nil)
 		return dispatcher.EndGroups
 	}
-	ctx.Reply(update, ext.ReplyTextString("已请求取消任务: "+taskID), nil)
+	ctx.Reply(update, ext.ReplyTextString(i18n.T(i18nk.BotMsgCancelInfoCancelRequested, map[string]any{
+		"TaskID": taskID,
+	})), nil)
 	return dispatcher.EndGroups
 }