Phosphor 4.6.1 — convergence, not guesses

The mini stops fighting the window manager: mode-switch geometry now
converges — the intended size and position re-apply every ~120 ms
until the window actually matches, instead of one-shot timing guesses
that lost to a busy WM. Fixes the returning wander, the double-M from
fullscreen, the sometimes-stays-tiny restore, and the forgotten mini
position (a mid-flight rectangular WM restore was also clobbering the
remembered mini size — squares only now). User drags always win; the
magnetism snap stands down while a switch is converging.

Shipped on compile gates (20/20 suites, clippy silent) at the owner's
call — the desktop itself is the receipt this round.

Install: sudo apt install ./phosphor_4.6.1_amd64.deb (or the rpm /
source tarball; SHA256SUMS covers all).

🐢 TURTLE VECTOR — built with Claude Fable 5.