sync(restic): pull live esh-docker-vm + irv-ml1 profiles into the repo

Both hosts had live improvements the repo never recorded:
- esh-docker-vm excludes ESPHome's 539 MB of PlatformIO cache (2026-09-14).
- irv-ml1 runs /etc/restic/arbo-checkpoint.sh before the backup, a non-fatal
  SQLite online-backup of arbo's gallery DB. That script is added here too.
The live copies were correct and are the source for the next change. (Also fixes
the fv-ml1 augaman removal time to ~0130 PT.)

configs/restic/irv-ml1/profiles.yaml

@@ -20,7 +20,8 @@
 #     source. Only /opt/docker is backed up (compose files + configs,
 #     once Docker is installed following the fleet convention).
 #
-# No DB dumps needed — this host's workloads don't store relational data.
+# DB: arbo (catalog engine) keeps a SQLite gallery DB in the arbo_db volume;
+# run-before checkpoints it (gallery.sqlite.bak) so the daily volume backup is consistent.
 
 version: "1"
 
@@ -40,6 +41,8 @@ default:
 
   backup:
     verbose: 1
+    run-before:
+      - /etc/restic/arbo-checkpoint.sh   # consistent SQLite snapshot of the arbo gallery DB
     run-after:
       - date +%s > /var/lib/restic/last-success
     source: