(new): support Bot API 10.3

(fix): finalize v2 contracts
(tests): cover v2 migration
(doc): prepare release guidance

update_context.go

@@ -3,7 +3,7 @@ package laniakea
 import (
 	"time"
 
-	"git.scuroneko.dev/scuroneko/laniakea/tgapi"
+	"git.scuroneko.dev/scuroneko/laniakea/v2/tgapi"
 )
 
 func (bot *Bot[T]) handleUpdate(u *tgapi.Update, ctx *MessageContext) bool {
@@ -201,10 +201,11 @@ func (bot *Bot[T]) prepareUpdateCtx(u *tgapi.Update, ctx *MessageContext) {
 		}
 	case tgapi.UpdateTypePollAnswer:
 		if u.PollAnswer != nil {
-			if voter, ok := u.PollAnswer.VoterUser(); ok {
-				from = voter
-			} else if voterChat, ok := u.PollAnswer.VoterChatInfo(); ok {
-				chat = voterChat
+			if u.PollAnswer.User != nil {
+				from = u.PollAnswer.User
+			}
+			if u.PollAnswer.VoterChat != nil {
+				chat = u.PollAnswer.VoterChat
 			}
 		}
 	case tgapi.UpdateTypeMessageReaction:
@@ -238,6 +239,10 @@ func (bot *Bot[T]) prepareUpdateCtx(u *tgapi.Update, ctx *MessageContext) {
 		if u.Subscription != nil {
 			from = &u.Subscription.User
 		}
+	case tgapi.UpdateTypeMessageGenerationStopped:
+		if u.StoppedMessageGeneration != nil {
+			chat = &u.StoppedMessageGeneration.Chat
+		}
 	}
 	if ctx.Msg != nil && from == nil {
 		from = ctx.Msg.From