google_photos: the -m launch froze on Windows CPython

lib/examples/google_photos/google_photos.py

@@ -123,11 +123,15 @@ def _block_if_batch():
         app.run()  # "none": blocking service loop (async timers: asyncio.run)
         return
     # "ambient" was chosen at import time; the timer already drives the app,
-    # so just hold the main thread until the window closes.
-    import time
+    # so just hold the main thread until the window closes. Hold it with the
+    # timer backend's own sleep, never time.sleep: on Windows the timer fires
+    # only while this thread is in an alertable wait (SleepEx), and a plain
+    # time.sleep starves it -- the window then never repaints and Windows
+    # marks it "Not Responding".
+    from multimer import auto as timer
 
     while not app.quit_requested:
-        time.sleep(0.05)
+        timer.sleep_ms(50)
 
 
 main()

scripts/gallery_generator.py

@@ -62,14 +62,22 @@
 from personal_examples import PERSONAL_EXAMPLE_DIRS  # noqa: E402
 
 REPO_ROOT = Path(__file__).resolve().parent.parent
+# The sibling pydevices checkout's tools/. Walk up rather than look one level
+# up only: from a git worktree under .worktrees/ the sibling is further away.
 _browser_tools = next(
-    path
-    for path in (
-        REPO_ROOT.parent / "pydevices" / "tools",
-        REPO_ROOT / "pydevices" / "tools",
-    )
-    if (path / "_browser_url.py").is_file()
+    (
+        path
+        for path in [REPO_ROOT / "pydevices" / "tools"]
+        + [parent / "pydevices" / "tools" for parent in REPO_ROOT.parents]
+        if (path / "_browser_url.py").is_file()
+    ),
+    None,
 )
+if _browser_tools is None:
+    raise SystemExit(
+        "gallery_generator: no pydevices/tools/_browser_url.py beside this "
+        "checkout or above it; clone PyDevices/pydevices as a sibling"
+    )
 sys.path.insert(0, str(_browser_tools))
 from _browser_url import query as browser_query  # noqa: E402