fix: sys.path for app module resolution in HF Spaces

app/api_client.py

@@ -3,6 +3,7 @@ import os
 import requests
 import streamlit as st
 
+
 API_BASE_URL = os.getenv("API_BASE_URL", "http://localhost:8000")
 
 
@@ -59,4 +60,4 @@ def require_api():
             f"Cannot connect to API at {API_BASE_URL}. "
             "Start it with: `uv run uvicorn api.main:app --reload --port 8000`"
         )
-        st.stop()
+        st.stop()

app/pages/predict.py

@@ -1,7 +1,7 @@
 import sys
 from pathlib import Path
 
-sys.path.insert(0, str(Path(__file__).parent.parent))
+sys.path.insert(0, str(Path(__file__).parent.parent.parent))
 
 import pandas as pd
 import streamlit as st
@@ -11,7 +11,9 @@ from app.api_client import api_predict, require_api
 require_api()
 
 st.title("Predict Intent")
-st.caption("Test the intent classifier live, switching between models or letting the A/B router decide.")
+st.caption(
+    "Test the intent classifier live, switching between models or letting the A/B router decide."
+)
 
 col1, col2 = st.columns([3, 1])
 
@@ -44,7 +46,9 @@ if st.button("Predict", type="primary", disabled=not text):
         st.warning("This query was flagged as out-of-scope (low confidence).")
 
     if result.get("ab_variant"):
-        st.info(f"Served by A/B variant **{result['ab_variant']}** using model `{result['model_used']}`")
+        st.info(
+            f"Served by A/B variant **{result['ab_variant']}** using model `{result['model_used']}`"
+        )
     else:
         st.info(f"Served by model `{result['model_used']}`")
 
@@ -64,4 +68,4 @@ samples = [
 ]
 cols = st.columns(len(samples))
 for col, sample in zip(cols, samples):
-    col.code(sample, language=None)
+    col.code(sample, language=None)

app/streamlit_app.py

@@ -1,3 +1,11 @@
+import sys
+from pathlib import Path
+
+# ensure project root is on path so 'app' resolves correctly
+root = Path(__file__).parent.parent
+if str(root) not in sys.path:
+    sys.path.insert(0, str(root))
+
 import streamlit as st
 
 st.set_page_config(
@@ -11,4 +19,4 @@ compare_page = st.Page("pages/compare.py", title="Compare Models", icon=":materi
 monitoring_page = st.Page("pages/monitoring.py", title="Monitoring", icon=":material/monitoring:")
 
 pg = st.navigation([predict_page, compare_page, monitoring_page])
-pg.run()
+pg.run()

src/storage/s3.py

@@ -7,14 +7,15 @@ from src.utils.settings import settings
 
 
 def _get_client():
+    from botocore.config import Config
     return boto3.client(
         "s3",
         aws_access_key_id=settings.aws_access_key_id,
         aws_secret_access_key=settings.aws_secret_access_key,
         region_name=settings.aws_region,
+        config=Config(signature_version="s3v4"),
     )
 
-
 def upload_artifact(local_path: str, s3_key: str) -> None:
     client = _get_client()
     client.upload_file(local_path, settings.s3_bucket, s3_key)