build: stop pre-deleting /tmp/veilor-lmc — let livemedia-creator own its tmp

build/build-iso.sh

@@ -37,8 +37,9 @@ for cmd in livemedia-creator ksvalidator mksquashfs xorriso; do
     }
 done
 
-# ── Clean stale build dirs ──
+# ── Clean stale build dirs (resultdir only — let lmc manage own tmp) ──
-rm -rf "$OUT_DIR/build-${DATE}" /tmp/veilor-lmc
+rm -rf "$OUT_DIR/build-${DATE}"
+mkdir -p /tmp/veilor-lmc
 
 # ── Build ISO ──
 livemedia-creator \