(new): support Bot API 10.3

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

handler_test.go

@@ -9,7 +9,7 @@ import (
 	"testing"
 	"time"
 
-	"git.scuroneko.dev/scuroneko/laniakea/tgapi"
+	"git.scuroneko.dev/scuroneko/laniakea/v2/tgapi"
 	"git.scuroneko.dev/scuroneko/sneklog/v2"
 )
 
@@ -317,7 +317,7 @@ func TestPrepareUpdateCtxContract(t *testing.T) {
 			name: "poll answer",
 			update: &tgapi.Update{
 				Type:       tgapi.UpdateTypePollAnswer,
-				PollAnswer: &tgapi.PollAnswer{User: tgapi.User{ID: 115}},
+				PollAnswer: &tgapi.PollAnswer{User: &tgapi.User{ID: 115}},
 			},
 			wantFrom:   true,
 			wantFromID: 115,
@@ -326,7 +326,7 @@ func TestPrepareUpdateCtxContract(t *testing.T) {
 			name: "anonymous poll answer",
 			update: &tgapi.Update{
 				Type:       tgapi.UpdateTypePollAnswer,
-				PollAnswer: &tgapi.PollAnswer{VoterChat: tgapi.Chat{ID: -2007}},
+				PollAnswer: &tgapi.PollAnswer{VoterChat: &tgapi.Chat{ID: -2007}},
 			},
 			wantChat:   true,
 			wantChatID: -2007,
@@ -428,6 +428,18 @@ func TestPrepareUpdateCtxContract(t *testing.T) {
 			wantFrom:   true,
 			wantFromID: 121,
 		},
+		{
+			name: "stopped message generation",
+			update: &tgapi.Update{
+				Type: tgapi.UpdateTypeMessageGenerationStopped,
+				StoppedMessageGeneration: &tgapi.MessageGenerationStopped{
+					Chat:    tgapi.Chat{ID: -2012},
+					DraftID: 7,
+				},
+			},
+			wantChat:   true,
+			wantChatID: -2012,
+		},
 		{
 			name: "giveaway chat boost has no user",
 			update: &tgapi.Update{