Improve live and random live handling

- Add random live handlers, schemas and persistence for lot/play/continue/gameover/reward flow
- Update live status and schedule generation, including special rotation handling and CN timezone alignment
- Add config support for unlocking all daily special rotation songs and document the option
- Refresh live play, reward, precise score and session logic plus bundled main.db updates

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/handler/rlive/reward.go

@@ -0,0 +1,59 @@
+package rlive
+
+import (
+	"errors"
+	livehandler "honoka-chan/internal/handler/live"
+	"honoka-chan/internal/middleware"
+	"honoka-chan/internal/router"
+	rliveschema "honoka-chan/internal/schema/rlive"
+	"honoka-chan/internal/session"
+	honokautils "honoka-chan/internal/utils"
+
+	"github.com/gin-gonic/gin"
+)
+
+func reward(ctx *gin.Context) {
+	ss := session.Get(ctx)
+	token := ""
+	defer func() {
+		if ss.UserEng != nil {
+			deleteRandomLiveByToken(ss, token)
+			ss.ClearLiveInProgress()
+		}
+		ss.Finalize()
+	}()
+
+	req := rliveschema.RewardReq{}
+	err := honokautils.ParseRequestData(ctx, &req)
+	if ss.CheckErr(err) {
+		return
+	}
+	token = req.Token
+
+	randomLive, err := getRandomLiveByToken(ss, req.Token)
+	if ss.CheckErr(err) {
+		return
+	}
+
+	hasProgress, _ := ss.GetLiveInProgress()
+	if !hasProgress {
+		ss.CheckErr(errors.New("live progress not found"))
+		return
+	}
+
+	if req.LiveDifficultyID != 0 && req.LiveDifficultyID != randomLive.LiveDifficultyID {
+		ss.CheckErr(errors.New("random live difficulty mismatch"))
+		return
+	}
+
+	rewardResp, err := livehandler.BuildRewardResp(ss, req.ToLiveRewardReq(randomLive.LiveDifficultyID), true)
+	if ss.CheckErr(err) {
+		return
+	}
+
+	ss.Respond(rewardResp)
+}
+
+func init() {
+	router.AddHandler("main.php", "POST", "/rlive/reward", middleware.Common, reward)
+}