cyi-box: Memphis-style toolbox admin platform

Go(fun)+SQLite backend, Vue 3 frontend. Modules: dashboard, pay gateway
(Epay-compatible + CDK stock), license/card system (per-app appid, domain
binding), AI memory bank with built-in MCP server (/mcp, FTS5 search,
signed read links), server SSH monitor + terminal + SFTP, proxy pool with
protocol-level alive checks, DB manager (mysql/pg/sqlite + SQL
autocomplete + import/export), disk share, vault (AES-GCM + TOTP),
bookmarks, dev tools.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

backend/internal/store/dbconn.go

@@ -0,0 +1,91 @@
+package store
+
+import (
+	"database/sql"
+	"errors"
+	"time"
+
+	"github.com/cyi-cc/cyi-box/backend/internal/db"
+)
+
+// Dbconn 数据库连接条目：password_enc 为 AES-GCM 密文；sqlite 时 database 存文件路径
+type Dbconn struct {
+	Id          int64
+	Name        string
+	Engine      string // mysql | postgres | sqlite
+	Host        string
+	Port        int64
+	Username    string
+	PasswordEnc string
+	Database    string
+	Params      string // DSN 附加参数，如 mysql 的 charset、pg 的 sslmode
+	CreatedAt   int64
+	UpdatedAt   int64
+}
+
+func dbconnFromRow(e db.Dbconn) Dbconn {
+	return Dbconn{
+		Id: e.ID, Name: e.Name, Engine: e.Engine, Host: e.Host, Port: e.Port,
+		Username: e.Username, PasswordEnc: e.PasswordEnc, Database: e.Database,
+		Params: e.Params, CreatedAt: e.CreatedAt, UpdatedAt: e.UpdatedAt,
+	}
+}
+
+func (s *Store) ListDbconns() ([]Dbconn, error) {
+	rows, err := s.q.ListDbconns(storeCtx)
+	if err != nil {
+		return nil, err
+	}
+	items := make([]Dbconn, 0, len(rows))
+	for _, r := range rows {
+		items = append(items, dbconnFromRow(r))
+	}
+	return items, nil
+}
+
+func (s *Store) GetDbconn(id int64) (Dbconn, error) {
+	e, err := s.q.GetDbconn(storeCtx, id)
+	if errors.Is(err, sql.ErrNoRows) {
+		return Dbconn{}, ErrNotFound
+	}
+	return dbconnFromRow(e), err
+}
+
+func (s *Store) SaveDbconn(e *Dbconn) error {
+	now := time.Now().Unix()
+	if e.Id > 0 {
+		n, err := s.q.UpdateDbconn(storeCtx, db.UpdateDbconnParams{
+			Name: e.Name, Engine: e.Engine, Host: e.Host, Port: e.Port,
+			Username: e.Username, PasswordEnc: e.PasswordEnc,
+			Database: e.Database, Params: e.Params, UpdatedAt: now, ID: e.Id,
+		})
+		if err != nil {
+			return err
+		}
+		if n == 0 {
+			return ErrNotFound
+		}
+		return nil
+	}
+	id, err := s.q.InsertDbconn(storeCtx, db.InsertDbconnParams{
+		Name: e.Name, Engine: e.Engine, Host: e.Host, Port: e.Port,
+		Username: e.Username, PasswordEnc: e.PasswordEnc,
+		Database: e.Database, Params: e.Params, CreatedAt: now, UpdatedAt: now,
+	})
+	if err != nil {
+		return err
+	}
+	e.Id, e.CreatedAt, e.UpdatedAt = id, now, now
+	return nil
+}
+
+func (s *Store) DeleteDbconn(id int64) error {
+	n, err := s.q.DeleteDbconn(storeCtx, id)
+	if err != nil {
+		return err
+	}
+	if n == 0 {
+		return ErrNotFound
+	}
+	return nil
+}