feat(server): persist recruitment and serve pack reward summaries

go/internal/server/gamedata/pack_summary.go

@@ -0,0 +1,47 @@
+package gamedata
+
+import (
+	"database/sql"
+	"fmt"
+)
+
+// LoadPackSummaryTargets follows PackMapRewardInfo.IsSummaryTargetPackType in
+// the 2.35.10 client. Pack identities and types come from the installed tables.
+func LoadPackSummaryTargets(root, version string) (map[int]bool, error) {
+	db, closeDB, err := openStatDatabase(root, version)
+	if err != nil {
+		return nil, err
+	}
+	defer closeDB()
+	return loadPackSummaryTargets(db)
+}
+
+func loadPackSummaryTargets(db *sql.DB) (map[int]bool, error) {
+	rows, err := db.Query("SELECT id,ProtoBuf FROM PackTable ORDER BY id")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	result := map[int]bool{}
+	for rows.Next() {
+		var id int
+		var raw []byte
+		if err := rows.Scan(&id, &raw); err != nil {
+			return nil, err
+		}
+		types, err := packedInts(raw, 55)
+		if err != nil || len(types) > 1 || id <= 0 {
+			return nil, fmt.Errorf("gamedata: invalid summary pack %d", id)
+		}
+		var packType uint64
+		if len(types) == 1 {
+			packType = types[0]
+		}
+		switch packType {
+		case 2, 3, 5, 7, 8, 9, 10, 12, 13, 14, 100:
+			continue
+		}
+		result[id] = true
+	}
+	return result, rows.Err()
+}