feat(stock): persist per-user dividend history

cmd/server/main.go

@@ -29,6 +29,7 @@ import (
 	"github.com/tiennm99/miti99bot/internal/modules/wordle"
 	"github.com/tiennm99/miti99bot/internal/server"
 	"github.com/tiennm99/miti99bot/internal/storage"
+	"github.com/tiennm99/miti99bot/internal/systemstate"
 	"github.com/tiennm99/miti99bot/internal/telegram"
 )
 
@@ -94,6 +95,10 @@ func factories() map[string]modules.Factory {
 // container; 10s leaves headroom without hiding a wedged cluster.
 const mongodbInitTimeout = 10 * time.Second
 
+// stockMigrationTimeout bounds the one-time scan of persisted stock
+// portfolios without tying it to the shorter MongoDB connection timeout.
+const stockMigrationTimeout = 2 * time.Minute
+
 func main() {
 	rootCtx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
 	defer stop()
@@ -119,6 +124,12 @@ func main() {
 	if err := lol.InitStore(rootCtx, provider.Collection(lol.CollectionName)); err != nil {
 		log.Fatal("lol storage init failed", "err", err)
 	}
+	migrationCtx, cancelMigration := context.WithTimeout(rootCtx, stockMigrationTimeout)
+	if err := initStockStore(migrationCtx, provider); err != nil {
+		cancelMigration()
+		log.Fatal("stock storage init failed", "err", err)
+	}
+	cancelMigration()
 
 	b, err := telegram.NewBot(cfg.TelegramBotToken)
 	if err != nil {
@@ -209,6 +220,20 @@ func main() {
 	}
 }
 
+func initStockStore(ctx context.Context, provider storage.Provider) error {
+	return initStockStoreWith(ctx, provider, stock.InitStore)
+}
+
+type stockStoreInitializer func(context.Context, storage.Collection, storage.Collection) error
+
+func initStockStoreWith(ctx context.Context, provider storage.Provider, init stockStoreInitializer) error {
+	return init(
+		ctx,
+		provider.Collection(stock.CollectionName),
+		provider.Collection(systemstate.CollectionName),
+	)
+}
+
 // buildProvider picks the storage backend. Selection order:
 //  1. Explicit KV_PROVIDER env (memory|mongodb) wins.
 //  2. Auto-detect: MONGO_URL set → mongodb; otherwise memory.