Create app.py

app.py

@@ -0,0 +1,35 @@
+# app.py — wrapper used by Hugging Face Spaces to start the Chainlit UI
+# This simple script locates the packaged chainlit app and invokes the chainlit CLI.
+
+import os
+import subprocess
+from pathlib import Path
+import sys
+
+# Optional: set a default model name here or use Space env vars to override
+# os.environ.setdefault("MINI_TRANSFORMER_MODEL_NAME", "small_model_v1")
+
+# Resolve path to packaged chainlit app inside the repository
+app_path = Path(__file__).parent / "src" / "mini_transformer" / "apps" / "chainlit_app.py"
+if not app_path.exists():
+    # If package is installed into env, try to find installed module
+    try:
+        import mini_transformer.apps.chainlit_app as packed
+
+        app_path = Path(packed.__file__)
+    except Exception:
+        print("Could not locate mini_transformer.apps.chainlit_app. Make sure package files are present.", file=sys.stderr)
+        raise SystemExit(1)
+
+port = os.environ.get("PORT", os.environ.get("MINI_TRANSFORMER_UI_PORT", "7860"))
+host = os.environ.get("HOST", "0.0.0.0")
+
+cmd = ["chainlit", "run", str(app_path), "--host", host, "--port", str(port)]
+print("Starting Chainlit with:\n", " ".join(cmd))
+
+# Use subprocess.run so Chainlit becomes the foreground process
+try:
+    subprocess.run(cmd, check=True)
+except FileNotFoundError:
+    print("'chainlit' CLI not found. Ensure 'chainlit' is in requirements.txt and installed.", file=sys.stderr)
+    raise