Release v0.3.5 (#160)

* Release v0.3.5 prep

* fix(sidebar): bypass stale browser cache for snapshot state

* test(sidebar): guard no-store snapshot fetches

scripts/bootstrap_test_env.sh

@@ -11,6 +11,18 @@ if [ "${1:-}" = "--force" ]; then
     FORCE="1"
 fi
 
+PYTHON_BIN="${PYTHON:-}"
+if [ -z "$PYTHON_BIN" ]; then
+    if command -v python3 >/dev/null 2>&1; then
+        PYTHON_BIN="python3"
+    elif command -v python >/dev/null 2>&1; then
+        PYTHON_BIN="python"
+    else
+        echo "Could not find python3 or python on PATH." >&2
+        exit 1
+    fi
+fi
+
 if [ -d .venv ]; then
     if [ -z "$FORCE" ]; then
         echo ".venv already exists. Pass --force to recreate."
@@ -21,7 +33,7 @@ if [ -d .venv ]; then
 fi
 
 echo "Creating .venv ..."
-python -m venv .venv
+"$PYTHON_BIN" -m venv .venv
 
 echo "Upgrading pip ..."
 .venv/bin/python -m pip install --quiet --upgrade pip