chore(changeset): declare the sys_file scope changeset as widening and narrowing

The diff adds four functions and four types to the service-storage
package entry, a widening of its published surface, beside the
narrowing of the sys_file scope accept set. The repo's reader of the
line spells that case as yes (narrowing). The levels are unchanged:
service-storage minor already meets what yes requires, spec stays patch.

Claude-Session: https://claude.ai/code/session_01VZqqwTj2wsihZEbfT6yyYN
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

.changeset/22443-sys-file-public-scope-rewrite.md

@@ -5,7 +5,7 @@
 
 feat(service-storage)!: the `sys_file` scope option `public` is retired, and rows already stored with it are rewritten to `user` by a one-time operator sweep (#22443)
 
-Clause-②: no (narrowing)
+Clause-②: yes (narrowing)
 
 <!-- adr-0087: not-required (already-registered storage-scope-public-retired) the retirement of the storage scope public is that step-18 entry; this changeset retires the same value from the stored sys_file vocabulary and rewrites its stored rows through an operator sweep -->