fix(filesystem): run pifs from local venv

pifs

@@ -1,6 +1,10 @@
-#!/usr/bin/env python3
-from pageindex.filesystem.cli import main
+#!/bin/sh
+set -eu
 
+SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
 
-if __name__ == "__main__":
-    raise SystemExit(main())
+if [ -x "$SCRIPT_DIR/.venv/bin/python" ]; then
+  exec "$SCRIPT_DIR/.venv/bin/python" -m pageindex.filesystem.cli "$@"
+fi
+
+exec python3 -m pageindex.filesystem.cli "$@"

requirements.txt

@@ -1,6 +1,7 @@
 litellm==1.83.7
-# openai-agents  # optional: required for examples/agentic_vectorless_rag_demo.py
+# openai-agents==0.17.2  # optional: required for pifs chat/ask and examples/agentic_vectorless_rag_demo.py
 pymupdf==1.26.4
 PyPDF2==3.0.1
 python-dotenv==1.2.2
 pyyaml==6.0.2
+sqlite-vec>=0.1.9