The "Applying theme — rebuilding…" toast used the default timeout, so it
vanished seconds into a multi-minute home-manager switch — leaving the
user with no signal and the impression the selection failed. Now it's
persistent (timeout 0) and all theme notifications share a synchronous
tag, so swaync REPLACES it in place with "Theme applied ✓" (or a critical
failure toast that persists) when the rebuild finishes.
notify() grew persistent/urgency/summary params. Honest indeterminate
feedback — HM exposes no percentage, so no fake progress bar.
Verified: py_compile clean; the full apply→switch→notify path runs end to
end (dummy NOMARCHY_REBUILD). The in-place replacement is visible only in
a real swaync session.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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