fix(packaging/windows): Windows 11 22H2 floor + tray install task + stale console-port fixes

The OS floor is now enforced at install time (MinVersion=10.0.22621 with an
explanatory [Messages] override): pf-vdisplay is built against IddCx 1.10, and
on Windows 10 (incl. LTSC) / Win11 21H2 the device fails start with Code 10
STATUS_DEVICE_POWER_FAILURE (field-reported). Docs (site requirements/install/
windows-host pages + README) state the floor; new docs-site Security page.

Installer also gains the trayicon task (punktfunk-tray.exe file + HKLM Run key,
post-install launch as the signed-in user, upgrade taskkill + uninstall
--quit/taskkill choreography before file deletion), and the wizard/cleanup
text/port sweeps move off the stale :3000 web-console references to :47992
(cleanups sweep both for upgrades from old installs).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs-site/content/docs/fedora-kde.md

@@ -10,6 +10,9 @@ systemd service and uses KWin to create per-client virtual displays, captured ze
 > Validated live on **Fedora 44 KDE Plasma** with an RTX 4090: KWin virtual output + full
 > zero-copy capture. Everything below is the reproducible flow — paste it on a fresh box.
 
+> New here? Read [Security & Safe Use](/docs/security) first — a streaming host is remote control of
+> the machine, so keep it on a trusted LAN or VPN and require pairing.
+
 The setup has three parts: **NVIDIA driver** → **host RPM** → **KWin streaming session**.
 
 ## 1. NVIDIA driver (RPM Fusion akmod)