fix: pre-accept TabPFN license in Dockerfile ENV + cache file + all env var names

Dockerfile

@@ -17,6 +17,16 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 USER user
 
+# ── TabPFN license acceptance ──────────────────────────────────────────────────
+# Set ALL known env var names TabPFN v2 checks for, at the container level.
+# This must be done before any Python code runs — setting them inside Python
+# files is too late because TabPFN checks on import.
+ENV TABPFN_ACCEPT_LICENSE=1 \
+    TABPFN_LICENSE=accept \
+    TABPFN_ACCEPT_TERMS=1 \
+    TABPFN_LICENSE_ACCEPTED=1 \
+    AGREE_TABPFN_LICENSE=1
+
 # Copy the entire project
 COPY --chown=user . $HOME/app/
 
@@ -27,6 +37,14 @@ RUN pip install --no-cache-dir -r webapp/requirements.txt
 # Install SAP-RPT-1 OSS directly from GitHub (needed for the real model)
 RUN pip install --no-cache-dir git+https://github.com/SAP-samples/sap-rpt-1-oss.git
 
+# Pre-accept TabPFN license at build time by writing the marker file TabPFN
+# looks for in the cache directory (covers all versions of the check).
+RUN python -c "\
+import os; \
+os.makedirs(os.path.expanduser('~/.cache/tabpfn'), exist_ok=True); \
+open(os.path.expanduser('~/.cache/tabpfn/license_accepted'), 'w').write('accepted'); \
+print('TabPFN license pre-accepted.')"
+
 # Expose port 7860 (Hugging Face Spaces default port)
 EXPOSE 7860
 

code/models/tabpfn_wrapper.py

@@ -18,9 +18,13 @@ from typing import Optional, Union
 import numpy as np
 import pandas as pd
 
-# Automatically accept the TabPFN license to prevent browser/socket crashes on Windows
-os.environ["TABPFN_LICENSE"] = "accept"
-os.environ["TABPFN_ACCEPT_LICENSE"] = "1"
+# Automatically accept the TabPFN license (non-interactive / CI environments).
+# Different TabPFN versions check different env var names — set all of them.
+os.environ["TABPFN_ACCEPT_LICENSE"]   = "1"
+os.environ["TABPFN_LICENSE"]          = "accept"
+os.environ["TABPFN_ACCEPT_TERMS"]     = "1"
+os.environ["TABPFN_LICENSE_ACCEPTED"] = "1"
+os.environ["AGREE_TABPFN_LICENSE"]    = "1"
 
 # ── Patch for old TabPFN compatibility with newer torch ──────────────────────
 try:

webapp/benchmark.py

@@ -16,6 +16,14 @@ from sklearn.neighbors import KNeighborsClassifier, KNeighborsRegressor
 
 warnings.filterwarnings("ignore")
 
+# Accept TabPFN license non-interactively — must be set before any tabpfn import.
+# Cover all env var names used across different TabPFN versions.
+os.environ.setdefault("TABPFN_ACCEPT_LICENSE",   "1")
+os.environ.setdefault("TABPFN_LICENSE",          "accept")
+os.environ.setdefault("TABPFN_ACCEPT_TERMS",     "1")
+os.environ.setdefault("TABPFN_LICENSE_ACCEPTED", "1")
+os.environ.setdefault("AGREE_TABPFN_LICENSE",    "1")
+
 # Allow importing model wrappers from the code directory
 sys.path.insert(0, str(Path(__file__).parent.parent / "code"))