Migration 0005_script_overlays drops the legacy l4d2center_maps /
cedapug_maps overlay rows but leaves their /var/lib/left4me/overlays/{id}
directories on disk. When the web app subsequently creates a new overlay
and AUTOINCREMENT issues an id matching one of those orphans,
create_overlay_directory(exist_ok=False) crashes with FileExistsError —
which surfaced as a 500 on POST /overlays the first time a script
overlay was created on a deployed test box.
Adds a sentinel-gated sweep in deploy-test-server.sh that lists overlay
ids in the DB, removes any directory under overlays/ whose id has no
matching row, and drops the now-unused global_overlay_cache. Mirrors the
.kernel-overlay-migrated sentinel pattern so reruns are no-ops.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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