fix(self-update): install reconcile scripts on OTA updates

The OTA self-update path only refreshed image-versions.sh, leaving
reconcile-containers.sh and container-specs.sh frozen at whatever
version was baked into the ISO that originally provisioned the
node. Any fix to those scripts (notably the --create-missing flag
and the DISK_GB detection fix shipped this round) never reached
existing nodes, and on .228 both scripts were outright missing
because the node predated their inclusion in the ISO recipe.

Install all three helper scripts to /opt/archipelago/scripts/ on
every self-update run. Also preserve the legacy copy of
image-versions.sh at /opt/archipelago/image-versions.sh for any
older backend binaries still looking there first.

scripts/self-update.sh

@@ -170,10 +170,23 @@ else
     warn "Frontend build output not found at $BUILT_WEB — skipping"
 fi
 
-# Update image-versions.sh on the server
+# Update helper scripts in /opt/archipelago/scripts/
+# These are canonical home; keep a copy at /opt/archipelago/image-versions.sh
+# for backward compatibility with older binaries that still look there.
+SCRIPTS_DEST="/opt/archipelago/scripts"
+sudo mkdir -p "$SCRIPTS_DEST"
+for script in image-versions.sh reconcile-containers.sh container-specs.sh; do
+    src="$REPO_DIR/scripts/$script"
+    if [ -f "$src" ]; then
+        sudo install -m 755 "$src" "$SCRIPTS_DEST/$script"
+        ok "Updated $script"
+    else
+        warn "Missing $src — skipping"
+    fi
+done
+# Legacy path for image-versions.sh (older binaries looked here first)
 if [ -f "$REPO_DIR/scripts/image-versions.sh" ]; then
     sudo cp "$REPO_DIR/scripts/image-versions.sh" /opt/archipelago/image-versions.sh
-    ok "Image versions updated"
 fi
 
 # Update systemd service if changed