Add local FLUX image editing

dev/test_local.sh

@@ -343,6 +343,33 @@ CTYPE=$(grep -i content-type /tmp/hdr12.txt | tr -d "\r")
 [ "$CODE" = "200" ] && [ -s /tmp/test_dl.png ] && echo "$CTYPE" | grep -qi "image/png" \
   && ok "PNG-Download (200, $CTYPE)" || bad "PNG-Download (Code $CODE, $CTYPE)"
 
+# --- 12b. Referenzbild-Bearbeitung ------------------------------------------------------
+echo "== Test 12b: POST /v1/images/edits mit lokalem Referenzbild"
+python3 - <<'PY' >/tmp/edit-request.json
+import base64, json
+png = open('/tmp/test_dl.png', 'rb').read()
+print(json.dumps({
+    'prompt': 'Behalte die Person bei und ändere nur den Hintergrund',
+    'size': '1024x1024',
+    'steps': 4,
+    'guidance': 1.0,
+    'response_format': 'b64_json',
+    'image_b64': base64.b64encode(png).decode(),
+}))
+PY
+rm -f /tmp/test_worker_requests.jsonl
+RESP=$(curl -sf "$BASE/v1/images/edits" -H "Content-Type: application/json" \
+  --data-binary @/tmp/edit-request.json)
+echo "$RESP" | python3 -c '
+import base64,json,sys
+d=json.load(sys.stdin)
+assert base64.b64decode(d["data"][0]["b64_json"])[:4] == b"\x89PNG"
+' || bad "Bildbearbeitung liefert kein PNG"
+REFS=$(tail -1 /tmp/test_worker_requests.jsonl | python3 -c \
+  'import json,sys; print(len(json.load(sys.stdin).get("source_files", [])))')
+[ "$REFS" = "1" ] && ! find /tmp/test-images -name '.edit-*.ref' | grep -q . \
+  && ok "Referenzbild übergeben und danach gelöscht" || bad "Referenzbild-Pfad/Cleanup"
+
 # --- 13. Bild-Liste ---------------------------------------------------------------------
 echo "== Test 13: GET /images"
 RESP=$(curl -sf "$BASE/images")