feat(all): add hunting and events, commerce and rewards, binary calendars, GameData caching and login diagnostics

Implement hunting AP and progress, event tasks, exchanges, games, stories and actions; connect battle and reward handling.

Add CashShop plugin and installation, server purchases and entitlements, recharge rules and plugin version metadata.

Distribute binary calendars independently; cache GameData in memory and fix single-connection query deadlocks.

Improve automatic login and recovery diagnostics; document configuration and release flows.

go/internal/server/progress/research.go

@@ -0,0 +1,61 @@
+package progress
+
+import (
+	"fmt"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+func (s *Store) ResearchObjects(pack int) ([]int, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	store, err := s.fieldRewardEntries()
+	if err != nil {
+		return nil, err
+	}
+	entries, err := store.ListEntries("progress", "field_research")
+	if err != nil {
+		return nil, err
+	}
+	var ids []int
+	prefix := fmt.Sprintf("%d:", pack)
+	for key, raw := range entries {
+		if string(raw) != "once" {
+			return nil, fmt.Errorf("progress: invalid research entry")
+		}
+		if strings.HasPrefix(key, prefix) {
+			id, e := strconv.Atoi(strings.TrimPrefix(key, prefix))
+			if e != nil || id <= 0 {
+				return nil, fmt.Errorf("progress: invalid research identity")
+			}
+			ids = append(ids, id)
+		}
+	}
+	sort.Ints(ids)
+	return ids, nil
+}
+func (s *Store) ResearchObjectReply(pack, id int) ([]byte, bool, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	store, err := s.fieldRewardEntries()
+	if err != nil {
+		return nil, false, err
+	}
+	return store.LoadEntry("progress", "field_research_rewards", fieldRewardKey(pack, id))
+}
+func (s *Store) MarkResearchObject(pack, id int, rewardItems []byte) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if pack <= 0 || id <= 0 {
+		return fmt.Errorf("progress: invalid research identity")
+	}
+	store, err := s.fieldRewardEntries()
+	if err != nil {
+		return err
+	}
+	if err = store.PutEntry("progress", "field_research_rewards", fieldRewardKey(pack, id), rewardItems); err != nil {
+		return err
+	}
+	return store.PutEntry("progress", "field_research", fieldRewardKey(pack, id), []byte("once"))
+}