feat(fleet): system-type profiles (H2) (#660)

packages/mosaic/framework/install.sh

@@ -24,9 +24,11 @@ INSTALL_MODE="${MOSAIC_INSTALL_MODE:-prompt}"
 # reconcile_framework_files (overwrite + backup-once); the rest stay user-owned.
 # User-created content in these paths survives rsync --delete.
 #
-# fleet/* — the framework SEEDS only fleet/examples, fleet/roles, and
+# fleet/* — the framework SEEDS fleet/examples, fleet/roles, fleet/profiles, and
 # fleet/roster.schema.json (synced normally — every fleet/roles/*.md role contract
-# lands automatically via this sync, so no per-file entry is needed). The user's
+# and fleet/profiles/*.yaml system-type profile lands automatically via this sync,
+# so no per-file entry is needed; the preserved "fleet/*.yaml" glob is anchored to
+# the top level only and does NOT shadow fleet/profiles/*.yaml). The user's
 # own fleet files MUST
 # survive `mosaic update` (which runs this sync automatically): the active
 # roster (`fleet/roster.yaml` + any other `fleet/*.yaml`), per-agent env