perf: sync protocol and core hardening updates

internal/domain/message_errors.go

@@ -3,13 +3,30 @@ package domain
 import "errors"
 
 var (
-	ErrMessageIDInvalid       = errors.New("message id invalid")
-	ErrMessageEmpty           = errors.New("message empty")
-	ErrMessageAuthorRequired  = errors.New("message author required")
-	ErrMessageNotModified     = errors.New("message not modified")
-	ErrMessageNotReadYet      = errors.New("message not read yet")
-	ErrReplyMessageIDInvalid  = errors.New("reply message id invalid")
-	ErrChatForwardsRestricted = errors.New("chat forwards restricted")
+	ErrMessageIDInvalid      = errors.New("message id invalid")
+	ErrMessageEmpty          = errors.New("message empty")
+	ErrMessageAuthorRequired = errors.New("message author required")
+	ErrMessageNotModified    = errors.New("message not modified")
+	ErrMessageNotReadYet     = errors.New("message not read yet")
+	// ErrMessageRandomIDDuplicate 表示同一发送者重复使用 random_id，且本次
+	// 不可变请求载荷与首次成功发送不一致。完全相同的重放不返回此错误，
+	// 而是复用首次发送结果。
+	ErrMessageRandomIDDuplicate = errors.New("message random id duplicate")
+	// ErrLoginCodeDeliveryInvalid rejects malformed durable 777000 delivery
+	// commands before allocating message/pts facts.
+	ErrLoginCodeDeliveryInvalid = errors.New("login code delivery invalid")
+	// ErrLoginCodeDeliveryConflict means one phone_code_hash digest was reused
+	// for a different account or code. It must fail closed rather than expose or
+	// overwrite the first account's immutable receipt.
+	ErrLoginCodeDeliveryConflict = errors.New("login code delivery conflict")
+	// ErrLoginCodeDeliveryCommitAmbiguous means PostgreSQL lost the commit
+	// acknowledgement and an independent receipt probe could not prove whether
+	// the durable 777000 transaction committed. Callers must retain the opaque
+	// code record until TTL expiry; deleting it could invalidate a committed but
+	// undisclosed delivery and make a retry impossible to reconcile.
+	ErrLoginCodeDeliveryCommitAmbiguous = errors.New("login code delivery commit ambiguous")
+	ErrReplyMessageIDInvalid            = errors.New("reply message id invalid")
+	ErrChatForwardsRestricted           = errors.New("chat forwards restricted")
 	// ErrPinnedSavedDialogsTooMuch 映射 PINNED_TOO_MUCH：收藏夹子会话置顶
 	// 数量达到 MaxPinnedSavedDialogs 上限。
 	ErrPinnedSavedDialogsTooMuch = errors.New("pinned saved dialogs too much")