🛠️ fix: v1 interface feedback regressions

Resolve verified V1 frontend feedback by improving channel workflows, auth behavior, API key interactions, user filtering, layout persistence, subscription quota handling, i18n text, pricing metadata, and stale frontend cache recovery.

- Add a global frontend cache version cleanup to prevent old frontend localStorage from causing page errors after upgrades.
- Fix channel copy refresh, model mapping input focus loss, create-channel fetch-model title state, upstream model update confirmation, and batch test toast behavior.
- Respect password login settings and improve Turnstile, forgot-password, registration, and invite-link flows.
- Make user role/status filtering server-side and preserve table page size in URLs.
- Improve API key edit validation feedback and prefetch real keys for reliable copy actions.
- Fix rankings access fail-open behavior, double scrollbars, subscription received amount conversion/display, token i18n wording, model deletion confirmation grammar, and Claude pricing context inference.
- Add clearer Playground model/group loading errors.

Validation:
- bun run typecheck
- bun run i18n:sync
- gofmt on modified Go files
- go test ./controller ./model -run '^$'

model/user.go

@@ -225,7 +225,7 @@ func GetAllUsers(pageInfo *common.PageInfo) (users []*User, total int64, err err
 	return users, total, nil
 }
 
-func SearchUsers(keyword string, group string, startIdx int, num int) ([]*User, int64, error) {
+func SearchUsers(keyword string, group string, role *int, status *int, startIdx int, num int) ([]*User, int64, error) {
 	var users []*User
 	var total int64
 	var err error
@@ -246,28 +246,25 @@ func SearchUsers(keyword string, group string, startIdx int, num int) ([]*User,
 
 	// 构建搜索条件
 	likeCondition := "username LIKE ? OR email LIKE ? OR display_name LIKE ?"
+	likeArgs := []interface{}{"%" + keyword + "%", "%" + keyword + "%", "%" + keyword + "%"}
 
 	// 尝试将关键字转换为整数ID
 	keywordInt, err := strconv.Atoi(keyword)
 	if err == nil {
 		// 如果是数字，同时搜索ID和其他字段
 		likeCondition = "id = ? OR " + likeCondition
-		if group != "" {
-			query = query.Where("("+likeCondition+") AND "+commonGroupCol+" = ?",
-				keywordInt, "%"+keyword+"%", "%"+keyword+"%", "%"+keyword+"%", group)
-		} else {
-			query = query.Where(likeCondition,
-				keywordInt, "%"+keyword+"%", "%"+keyword+"%", "%"+keyword+"%")
-		}
-	} else {
-		// 非数字关键字，只搜索字符串字段
-		if group != "" {
-			query = query.Where("("+likeCondition+") AND "+commonGroupCol+" = ?",
-				"%"+keyword+"%", "%"+keyword+"%", "%"+keyword+"%", group)
-		} else {
-			query = query.Where(likeCondition,
-				"%"+keyword+"%", "%"+keyword+"%", "%"+keyword+"%")
-		}
+		likeArgs = append([]interface{}{keywordInt}, likeArgs...)
+	}
+
+	query = query.Where("("+likeCondition+")", likeArgs...)
+	if group != "" {
+		query = query.Where(commonGroupCol+" = ?", group)
+	}
+	if role != nil {
+		query = query.Where("role = ?", *role)
+	}
+	if status != nil {
+		query = query.Where("status = ?", *status)
 	}
 
 	// 获取总数