test_scan_streaming.py 两处硬编码 E:/code/voyager，导致子进程 ModuleNotFoundError #20

--- a/tests/test_scan_streaming.py
+++ b/tests/test_scan_streaming.py
@@ -36,6 +36,7 @@
 from voyager.store import Store
 
 FIXTURES = Path(__file__).parent / "fixtures"
+REPO_ROOT = Path(__file__).resolve().parents[1]
 
 
 # ---------------------------------------------------------------------------
@@ -538,6 +539,7 @@
     Concurrent *creation* of a brand-new index is a different, separately
     covered case (test_concurrent_creation_of_a_fresh_index_does_not_fail).
     """
+    import os
     import subprocess
     import sys
     codex_tree = _codex_tree(tmp_path / "sessions")
@@ -554,7 +556,6 @@
     child = (
         "import sys\n"
         "from pathlib import Path\n"
-        "sys.path.insert(0, %r)\n"
         "from voyager.store import Store\n"
         "from voyager.cli import run_scan\n"
         "import voyager.adapters.codex as m\n"
@@ -566,15 +567,16 @@
         "run_scan(s, providers=['codex'], quiet=True)\n"
         "s.close()\n"
         "print('CHILD_OK')\n"
-    ) % (str(Path(r"E:/code/voyager")), str(codex_tree),
+    ) % (str(codex_tree),
          str(codex_tree.parent / "_absent_history.db"),
          str(codex_tree.parent / "_absent_state.db"),
          str(codex_tree.parent / "_absent_dev.db"),
          str(index))
 
+    env = {**os.environ, "PYTHONPATH": str(REPO_ROOT)}
     procs = [subprocess.Popen([sys.executable, "-c", child],
                               stdout=subprocess.PIPE, stderr=subprocess.PIPE,
-                              text=True, cwd=str(tmp_path))
+                              text=True, cwd=str(tmp_path), env=env)
              for _ in range(2)]
     for p in procs:
         _out, err = p.communicate(timeout=180)
@@ -622,6 +624,7 @@
     read), so the only thing wrong is that a concurrent setup is not tolerated.
     This test drives the real ``Store`` from two real processes.
     """
+    import os
     import subprocess
     import sys
     from voyager.store import Store
@@ -629,20 +632,20 @@
     CHILD = (
         "import sys\n"
         "from pathlib import Path\n"
-        "sys.path.insert(0, %r)\n"
         "from voyager.store import Store\n"
         "s = Store(Path(sys.argv[1]))\n"
         "s.close()\n"
         "print('OK')\n"
-    ) % str(Path(r"E:/code/voyager"))
-
+    )
+
+    env = {**os.environ, "PYTHONPATH": str(REPO_ROOT)}
     # Several trials: the failure is a race, so a single run proves nothing
     # either way.  Ten pairs is enough to catch a ~1-in-6 rate.
     for trial in range(10):
         db = tmp_path / ("fresh%d.db" % trial)
         procs = [subprocess.Popen([sys.executable, "-c", CHILD, str(db)],
                                   stdout=subprocess.PIPE, stderr=subprocess.PIPE,
-                                  text=True, cwd=str(tmp_path))
+                                  text=True, cwd=str(tmp_path), env=env)
                  for _ in range(2)]
         failures = []
         for p in procs: