ci: govern exact CLI flag migrations

internal/corecmd/runtimeannotate/interface_alias.go

@@ -0,0 +1,25 @@
+// Copyright 2026 Alibaba Group
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package runtimeannotate
+
+// CLI flag alias evidence is kept in this narrow file so the base-owned
+// Interface Snapshot helper can add the protocol constants to an older stable
+// worktree without replacing that revision's complete runtimeannotate package.
+// Only corecmd.FlagSpec.Aliases writes the exact origin; neither field is a
+// Schema synonym or final payload-equivalence proof.
+const (
+	AnnotationFlagAliasOf     = "dws.compat.alias_of"
+	AnnotationFlagAliasOrigin = "dws.compat.alias_origin"
+	FlagAliasOriginCorecmdV1  = "corecmd.flag_spec_aliases.v1"
+)