Add startup diagnostics for Russian GPT-SoVITS

Dockerfile

@@ -2,10 +2,13 @@ FROM continuumio/miniconda3:24.7.1-0
 
 ENV DEBIAN_FRONTEND=noninteractive \
     PYTHONUNBUFFERED=1 \
+    PYTHONFAULTHANDLER=1 \
     PIP_NO_CACHE_DIR=1 \
     is_half=False \
     is_share=False \
     HF_HOME=/data/.cache/huggingface \
+    GRADIO_SERVER_NAME=0.0.0.0 \
+    GRADIO_SERVER_PORT=7860 \
     TERM=xterm
 
 SHELL ["/bin/bash", "-lc"]
@@ -63,5 +66,35 @@ RUN mkdir -p GPT_SoVITS/pretrained_models/v2Pro GPT_weights_v2ProPlus SoVITS_wei
     curl -L --retry 5 -o SoVITS_weights_v2ProPlus/ru-base_e10_s123570.pth \
       https://huggingface.co/fuckSelf/GPT-SoVITS-Russian/resolve/main/ru-base_e10_s123570.pth
 
+RUN cat > /app/start-space.sh <<'SH'
+#!/usr/bin/env bash
+set -euxo pipefail
+source /opt/conda/etc/profile.d/conda.sh
+conda activate GPTSoVits
+cd /app
+
+echo "=== GPT-SoVITS Space startup ==="
+python - <<'PY'
+from pathlib import Path
+checks = [
+    'config.py',
+    'GPT_SoVITS/pretrained_models/s1v3-ru.ckpt',
+    'GPT_SoVITS/pretrained_models/v2Pro/s2Gv2ProPlus-rus.pth',
+    'GPT_weights_v2ProPlus/ru-base-e20.ckpt',
+    'SoVITS_weights_v2ProPlus/ru-base_e10_s123570.pth',
+]
+for item in checks:
+    path = Path(item)
+    print(f'{item}: exists={path.exists()} size={path.stat().st_size if path.exists() else 0}', flush=True)
+for line in Path('config.py').read_text().splitlines():
+    if 'webui_port_main' in line or 's1v3' in line or 's2Gv2ProPlus' in line:
+        print(line, flush=True)
+PY
+
+echo "=== Launching webui.py on port ${GRADIO_SERVER_PORT} ==="
+exec python -u webui.py
+SH
+RUN chmod +x /app/start-space.sh
+
 EXPOSE 7860
-CMD ["bash", "-lc", "source /opt/conda/etc/profile.d/conda.sh && conda activate GPTSoVits && python webui.py"]
+CMD ["/app/start-space.sh"]