diff --git a/.gitignore b/.gitignore
index e23a514..8319981 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,5 @@ tiles/build/
 *.pmtiles
 *.osm.pbf
 *.mbtiles
+tiles/build.log
+tiles/.DS_Store
diff --git a/tiles/progress.sh b/tiles/progress.sh
new file mode 100755
index 0000000..eefeb2d
--- /dev/null
+++ b/tiles/progress.sh
@@ -0,0 +1,54 @@
+#!/bin/bash
+# Ein Fortschritts-Snapshot für den Tile-Build. Gibt EINE Zeile aus:
+#   STAGE=<1|2|3|4|DONE> PCT=<n> LABEL=<menschlich, mit Balken + ETA>
+B=tiles/build
+LOG=tiles/build.log
+EXP_DL=$((24 * 1024 * 1024 * 1024))   # ~24 GB erwartete Quell-/Merge-Summe (15 Länder)
+EXP_PLAN_SEC=$((90 * 60))             # ~90 Min planetiler-Schätzung (Mittel-Europa)
+now=$(date +%s)
+
+_bytes() { local s=0 f; for f in "$@"; do [ -f "$f" ] && s=$((s + $(stat -f%z "$f" 2>/dev/null || echo 0))); done; echo "$s"; }
+_birth() { if [ -f "$1" ]; then stat -f%B "$1" 2>/dev/null || echo "$now"; else echo "$now"; fi; }
+_mtime() { if [ -f "$1" ]; then stat -f%m "$1" 2>/dev/null || echo "$now"; else echo "$now"; fi; }
+_bar()   { local p=$1 n i out=""; n=$((p * 20 / 100)); [ $n -gt 20 ] && n=20; [ $n -lt 0 ] && n=0
+           for ((i=0;i<20;i++)); do [ $i -lt $n ] && out+="█" || out+="░"; done; printf "%s" "$out"; }
+_eta()   { local s=$1; [ "$s" -lt 0 ] 2>/dev/null && s=0
+           if [ "$s" -ge 3600 ]; then printf "~%dh %dm" $((s/3600)) $(((s%3600)/60))
+           elif [ "$s" -ge 60 ]; then printf "~%d Min" $((s/60)); else printf "~%ds" "$s"; fi; }
+_gb()    { awk "BEGIN{printf \"%.1f\", $1/1073741824}"; }
+
+if grep -q "Tiles gebaut" "$LOG" 2>/dev/null; then
+  sz=$(_bytes "$B/dach.pmtiles"); echo "STAGE=DONE PCT=100 LABEL=Fertig — dach.pmtiles $(_gb $sz) GB"; exit 0
+fi
+
+if grep -q "→ planetiler" "$LOG" 2>/dev/null; then
+  start=$(_mtime "$B/dach.osm.pbf"); el=$((now - start)); [ $el -lt 1 ] && el=1
+  pp=$(grep -oE "[0-9]{1,3}%" "$LOG" 2>/dev/null | tail -1 | tr -d '%')
+  if [ -n "$pp" ] && [ "$pp" -ge 0 ] 2>/dev/null && [ "$pp" -le 100 ] 2>/dev/null; then pct=$pp; else pct=$((el * 100 / EXP_PLAN_SEC)); fi
+  [ $pct -gt 95 ] && pct=95; [ $pct -lt 1 ] && pct=1
+  eta=$((el * (100 - pct) / pct))
+  echo "STAGE=4 PCT=$pct LABEL=planetiler (Vektor-Tiles) $(_bar $pct) ${pct}% · ETA $(_eta $eta)"; exit 0
+fi
+
+if [ -f "$B/dach.osm.pbf" ]; then
+  b=$(_bytes "$B/dach.osm.pbf"); start=$(_birth "$B/dach.osm.pbf"); el=$((now - start)); [ $el -lt 1 ] && el=1
+  pct=$((b * 100 / EXP_DL)); [ $pct -gt 99 ] && pct=99
+  rate=$((b / el)); [ $rate -lt 1 ] && rate=1; eta=$(((EXP_DL - b) / rate))
+  echo "STAGE=3 PCT=$pct LABEL=osmium time-filter (dedup) $(_bar $pct) ${pct}% · $(_gb $b) GB · ETA $(_eta $eta)"; exit 0
+fi
+
+if [ -f "$B/dach-hist.osm.pbf" ]; then
+  b=$(_bytes "$B/dach-hist.osm.pbf"); start=$(_birth "$B/dach-hist.osm.pbf"); el=$((now - start)); [ $el -lt 1 ] && el=1
+  pct=$((b * 100 / EXP_DL)); [ $pct -gt 99 ] && pct=99
+  rate=$((b / el)); [ $rate -lt 1 ] && rate=1; eta=$(((EXP_DL - b) / rate))
+  echo "STAGE=2 PCT=$pct LABEL=osmium merge (Grenz-Nodes) $(_bar $pct) ${pct}% · $(_gb $b) GB · ETA $(_eta $eta)"; exit 0
+fi
+
+# Stufe 1: Download
+files=$(ls "$B"/*.osm.pbf 2>/dev/null | grep -v dach)
+b=$(_bytes $files); start=$(_birth "$LOG"); el=$((now - start)); [ $el -lt 1 ] && el=1
+pct=$((b * 100 / EXP_DL)); [ $pct -gt 99 ] && pct=99
+rate=$((b / el)); [ $rate -lt 1 ] && rate=1; eta=$(((EXP_DL - b) / rate))
+ndone=$(echo "$files" | grep -c .)
+cur=$(grep -E "^   [a-z]" "$LOG" 2>/dev/null | tail -1 | tr -d ' ')
+echo "STAGE=1 PCT=$pct LABEL=Download $(_bar $pct) ${pct}% · ${ndone}/15 Länder (${cur}) · $(_gb $b)/24 GB · ETA $(_eta $eta)"