Close Lot 13 on the first update from 0.2.0 to 0.3.0

[geeooff]

Documentation only, one commit.

• Lot 13 done. The published 0.2.0 updated to the published 0.3.0 through the menu on the maintainer's machine, 2026-09-23 16:25–16:28: the check, the download verified against the release's SHA-256, the handover, the new watcher up 0.9 s after the old one stopped, Windows Installer's verdict 0, nothing on screen but the icon going and coming back with the notification, and an offline check said in the menu (WinHTTP 12007). Closed on that machine alone by the maintainer's decision; the second machine updates the same evening.
• Left open, and said so: an update behind a proxy, and the failure path restarting the old watcher.
• One promise corrected in place in the reference: the installer's log of a successful update stays until the start after, since Windows Installer still holds it when the new watcher starts.

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