diff --git a/image-recipe/_archived/build-auto-installer-iso.sh b/image-recipe/_archived/build-auto-installer-iso.sh
index 34f04c97..899bb73b 100755
--- a/image-recipe/_archived/build-auto-installer-iso.sh
+++ b/image-recipe/_archived/build-auto-installer-iso.sh
@@ -3127,6 +3127,16 @@ Wants=tmp.mount
 ExecStartPre=/bin/mkdir -p /tmp
 CONSOLEFIX
 
+# Raise /tmp tmpfs cap above systemd's 50%-of-RAM default — PyInstaller-based
+# daemons (e.g. the Reticulum mesh daemon) self-extract to /tmp on every launch
+# and leak their extraction dir on abnormal exit; combined with release-build
+# staging dirs this can exhaust the default cap and starve app installs/mesh.
+mkdir -p /mnt/target/etc/systemd/system/tmp.mount.d
+cat > /mnt/target/etc/systemd/system/tmp.mount.d/override.conf <<'TMPSIZE'
+[Mount]
+Options=mode=1777,strictatime,nosuid,nodev,size=75%,nr_inodes=1m
+TMPSIZE
+
 # Auto-login on tty1 — no password prompt on console
 mkdir -p /mnt/target/etc/systemd/system/getty@tty1.service.d
 cat > /mnt/target/etc/systemd/system/getty@tty1.service.d/autologin.conf <<'AUTOLOGIN'