fix(windows): detect per-user Git for Windows bash under %LocalAppData%\Programs\Git (#3738)

find_bash() rejected the WindowsApps WSL stub and then probed only %LocalAppData%\Git, so per-user Git for Windows installs (winget / Inno Setup {userpf}) under %LocalAppData%\Programs\Git were never found and the Cookbook reported "needs Git Bash" despite Git being installed.

Add the Programs\Git subfolder to the LocalAppData fallback root.

core/platform_compat.py

@@ -191,6 +191,8 @@ def _windows_bash_fallbacks() -> List[str]:
         base = os.environ.get(env_name)
         if base:
             roots.append(ntpath.join(base, "Git"))
+            if env_name == "LocalAppData":
+                roots.append(ntpath.join(base, "Programs", "Git"))
     roots.extend(_WINDOWS_BASH_DEFAULT_ROOTS)
 
     paths: List[str] = []

tests/test_platform_compat.py

@@ -47,6 +47,20 @@ def test_find_bash_checks_local_app_data_git_install(monkeypatch):
     assert platform_compat.find_bash() == expected
 
 
+def test_find_bash_checks_local_app_data_programs_git_install(monkeypatch):
+    _reset_bash_cache(monkeypatch)
+    monkeypatch.setattr(platform_compat, "IS_WINDOWS", True)
+    monkeypatch.setattr(platform_compat.shutil, "which", lambda _name: None)
+    for env_name in platform_compat._WINDOWS_BASH_ROOT_ENV_VARS:
+        monkeypatch.delenv(env_name, raising=False)
+    monkeypatch.setenv("LocalAppData", r"C:\Users\alice\AppData\Local")
+
+    expected = r"C:\Users\alice\AppData\Local\Programs\Git\bin\bash.exe"
+    monkeypatch.setattr(platform_compat.os.path, "exists", lambda path: path == expected)
+
+    assert platform_compat.find_bash() == expected
+
+
 def test_find_bash_skips_windows_wsl_stub(monkeypatch):
     _reset_bash_cache(monkeypatch)
     monkeypatch.setattr(platform_compat, "IS_WINDOWS", True)