refactor(plugins): restructure admin and message_gateway into standard layered sub-packages

backend/plugins/domain/cap/repository.go

@@ -0,0 +1,58 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package cap
+
+import (
+	"Wavelet/core"
+	"Wavelet/core/contracts"
+	"context"
+	"sync"
+
+	"gorm.io/gorm"
+)
+
+var (
+	dbMu  sync.RWMutex
+	dbSvc contracts.DBService
+)
+
+// setDBService caches the DBService contract used by the persistence layer.
+func setDBService(s contracts.DBService) {
+	dbMu.Lock()
+	defer dbMu.Unlock()
+	dbSvc = s
+}
+
+// getDB resolves a GORM handle, preferring the *core.Context when supplied by callers.
+func getDB(ctx context.Context) *gorm.DB {
+	if c, ok := ctx.(*core.Context); ok && c != nil {
+		if s, err := core.Inject[contracts.DBService](c); err == nil && s != nil {
+			return s.DB(ctx)
+		}
+	}
+	dbMu.RLock()
+	s := dbSvc
+	dbMu.RUnlock()
+	if s != nil {
+		return s.DB(ctx)
+	}
+	return nil
+}
+
+// loadRuntimeSettings reads the CAPTCHA owned rows from the system config table.
+func loadRuntimeSettings(ctx context.Context) (RuntimeSettings, error) {
+	var records []configRecord
+	db := getDB(ctx)
+	if db == nil {
+		return parseRuntimeSettings(nil), nil
+	}
+	if err := db.Table("w_system_configs").Where("key IN ?", runtimeConfigKeys).Find(&records).Error; err != nil {
+		return RuntimeSettings{}, err
+	}
+	configs := make(map[string]string, len(records))
+	for _, r := range records {
+		configs[r.Key] = r.Value
+	}
+	return parseRuntimeSettings(configs), nil
+}