US06-06: Automate Phase F End-to-End Acceptance (#82)

photo_pipeline/services/archives.py

@@ -208,9 +208,12 @@ class ArchiveService:
             report["blockers"].append(
                 _issue(
                     "insufficient_capacity",
+                    # The free-space number is deliberately left out: it drifts between
+                    # two identical preflights, and the token is a digest of this text,
+                    # so quoting it here would invalidate every approval instantly.
                     f"{report['totals']['bytes']} B plus a "
-                    f"{self._config.archive_free_space_reserve_bytes} B reserve do not fit in "
-                    f"{report['capacity']['free_bytes']} B of free space",
+                    f"{self._config.archive_free_space_reserve_bytes} B reserve do not fit on "
+                    "the medium",
                 )
             )
         report["backup"] = self._backup_probe()