fix: preserve native model switches and bound project searches

tests/tools/test_search_giant_line_containment.py

@@ -20,6 +20,7 @@ import subprocess
 import pytest
 
 from tools.file_operations import ShellFileOperations
+from tools.environments.local import LocalEnvironment
 
 # Big enough to prove containment, small enough to keep the test fast.
 GIANT = 5 * 1024 * 1024  # 5MB single line
@@ -27,22 +28,20 @@ GIANT = 5 * 1024 * 1024  # 5MB single line
 STDOUT_CEILING = 1 * 1024 * 1024
 
 
-class RecordingEnv:
+class RecordingEnv(LocalEnvironment):
     """Local bash executor that records the largest stdout it returned."""
 
     def __init__(self, cwd):
-        self.cwd = cwd
+        super().__init__(cwd=cwd)
         self.max_stdout = 0
 
     def execute(self, command, timeout=60, **kwargs):
-        proc = subprocess.run(
-            ["bash", "-c", command],
-            capture_output=True, text=True, errors="replace",
-            timeout=timeout + 30,
-        )
-        out = proc.stdout + (proc.stderr or "")
+        # Use the application's shell selection/path handling. On Windows a
+        # bare 'bash' may select WSL, whose filesystem is not the native one.
+        result = super().execute(command, timeout=timeout + 30, **kwargs)
+        out = result.get("output", "")
         self.max_stdout = max(self.max_stdout, len(out))
-        return {"output": out, "returncode": proc.returncode}
+        return result
 
 
 @pytest.fixture()
@@ -58,6 +57,8 @@ def _ops(giant_dir, engine):
     env = RecordingEnv(str(giant_dir))
     ops = ShellFileOperations(env)
     ops._has_command = lambda cmd: cmd == engine
+    resolve = ops._resolve_command
+    ops._resolve_command = lambda cmd: None if cmd == "rg" and engine != "rg" else resolve(cmd)
     return ops, env
 
 
@@ -96,5 +97,5 @@ def test_line_cap_skipped_for_path_and_count_modes(giant_dir, engine, output_mod
     if output_mode == "files_only":
         assert {os.path.basename(f) for f in result.files} == {"trace.json", "small.py"}
     else:
-        assert {os.path.basename(k) for k in result.counts} == {"trace.json", "small.py"}
+        assert {os.path.basename(k) for k, count in result.counts.items() if count} == {"trace.json", "small.py"}
     assert env.max_stdout < STDOUT_CEILING