from pathlib import Path
import sys

PROJECT_ROOT = Path(__file__).resolve().parents[1]
SRC_PATH = PROJECT_ROOT / "src"
LIB_PATH = PROJECT_ROOT / "lib"

# Last insert(0) wins: order must be (root, lib, src) so src/models wins over
# tests/models (same package name "models" on sys.path when pytest imports tests).
for p in (str(PROJECT_ROOT), str(LIB_PATH), str(SRC_PATH)):
    if p in sys.path:
        sys.path.remove(p)
    sys.path.insert(0, p)