v2: standalone Clawdmeter.exe — runs on any Win11 machine, no Python

Package the tray+daemon as a single PyInstaller onefile exe so it runs on a
fresh Windows 11 box with no Python and no pip install. Verified on hardware:
the frozen exe connects over BLE, reads the Windows media session, and pushes
now-playing (incl. Cyrillic) at the 3s / 60s cadence.

- clawdmeter.spec: onefile, windowed (no console; logs to daemon.log). collect_all
  for winrt + bleak is the key bit — bleak loads its WinRT backend dynamically and
  the winrt.windows.* projections are split distributions that PyInstaller's static
  analysis misses, so BLE and the media session would otherwise fail at runtime.
  upx off (lowers AV false-positive rate).
- build-exe.ps1: one-command build (venv + deps + pyinstaller + spec).
- tray_windows.py: resolve the brand-logo asset from sys._MEIPASS when frozen.
- autostart_windows.py: when frozen, the HKCU\Run "Start at login" value points at
  the exe itself (sys.executable), not pythonw + script.
- .gitignore: ignore /build, /dist, /.venv — the exe ships via a Gitea release.
- README-windows.md: document the standalone-exe path (download / run / build).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

daemon/autostart_windows.py

@@ -56,6 +56,11 @@ def _command(tray_script: str | None = None) -> str:
                      module's own path (useful when autostart_windows.py IS
                      the entry point, but callers should pass tray_windows.py).
     """
+    if getattr(sys, "frozen", False):
+        # Running as the bundled PyInstaller exe: autostart launches the exe
+        # itself (sys.executable), not a pythonw + script pair. The exe is built
+        # windowed, so this is genuinely consoleless — no script path involved.
+        return f'"{sys.executable}"'
     pythonw = os.path.join(sys.base_exec_prefix, "pythonw.exe")
     script = os.path.abspath(tray_script if tray_script is not None else __file__)
     return f'"{pythonw}" "{script}"'