feat: 完善后端并新增 Vue3 WebUI

后端:
- 修复登录校验、DB 并发(单例+WAL+纯Go sqlite)、会话密钥持久化等核心缺陷
- 新增 Timer CRUD/签到/手动触发、执行日志、仪表盘、驱动元数据等 API
- 统一驱动接口: 带 context 的执行器、真实错误返回、敏感字段掩码、连通性测试
- 补全钉钉执行器; Timer 触发/提醒去重; 配置支持默认值与环境变量覆盖

前端:
- Vite+Vue3+TS+Pinia+Element Plus, 由驱动元数据动态渲染配置表单
- 登录/仪表盘(倒计时环)/定时器/规则/账号/日志/设置页面, 支持暗色模式
- 主题色 #66ccff, 信号波纹 logo, go:embed 单二进制部署

构建: Dockerfile 增加前端构建阶段; 补充各驱动配置文档

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

api/timer/tool.go

@@ -0,0 +1,72 @@
+package timer
+
+import (
+	"strconv"
+	"time"
+
+	"github.com/ssdomei232/goodBaby/handler/db"
+	"github.com/ssdomei232/goodBaby/model"
+)
+
+func parseID(raw string) (uint, error) {
+	id, err := strconv.ParseUint(raw, 10, 64)
+	if err != nil {
+		return 0, err
+	}
+	return uint(id), nil
+}
+
+func boolOr(v *bool, fallback bool) bool {
+	if v == nil {
+		return fallback
+	}
+	return *v
+}
+
+// findTimer 查找属于该用户的 Timer
+func findTimer(timerID, uid uint) (*model.Timer, error) {
+	gormDB, err := db.GetGormDB()
+	if err != nil {
+		return nil, err
+	}
+
+	var timer model.Timer
+	if err := gormDB.Where("id = ? AND uid = ?", timerID, uid).First(&timer).Error; err != nil {
+		return nil, err
+	}
+	return &timer, nil
+}
+
+func countRules(timerID, uid uint) (int64, error) {
+	gormDB, err := db.GetGormDB()
+	if err != nil {
+		return 0, err
+	}
+
+	var count int64
+	err = gormDB.Model(&model.Rule{}).Where("timer_id = ? AND uid = ?", timerID, uid).Count(&count).Error
+	return count, err
+}
+
+// signTimer 完成一次签到：重置计时、清除提醒与触发标记
+func signTimer(timer *model.Timer) error {
+	gormDB, err := db.GetGormDB()
+	if err != nil {
+		return err
+	}
+
+	now := time.Now().Unix()
+	if err := gormDB.Model(&model.Timer{}).Where("id = ?", timer.ID).
+		Updates(map[string]any{
+			"last_sign":   now,
+			"last_remind": 0,
+			"triggered":   false,
+		}).Error; err != nil {
+		return err
+	}
+
+	timer.LastSign = now
+	timer.LastRemind = 0
+	timer.Triggered = false
+	return nil
+}