chore(changeset): raise @objectstack/metadata-protocol to minor

`check-changeset-no-major`'s level axis refuses a PR that declares
`Clause-②: yes` while grading a package whose `packages/*/src/**` it
moves as `patch`. Route 1 of the two the gate names: the declaration is
right and the level is wrong.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ADLdAs2pVcH17h9tZKWMBg

Author: claude

.changeset/derived-provenance-write-door-and-hydration.md

@@ -1,5 +1,5 @@
 ---
-'@objectstack/metadata-protocol': patch
+'@objectstack/metadata-protocol': minor
 ---
 
 Stop persisting the caller's `_packageId` / `_packageVersion` / `_provenance`, and restate tenant authorship at hydration for every metadata type.