Move the pure controller-command web handlers out of MainForm into a
new TWebAdapter (bridge between TWebServer and TRadioController),
marshalling via FController.Invoke so it is daemon-ready.
- 20 handlers moved: Mode/Filter/AGC/AGCTop/Volume/WfAGC/WfNF/Mute/
NR/NB/SNB/ANF/FreqB/Center/Attn/ActiveVfo/Ctun/MOX/Tun/FMStep +
ClientActiveChanged. Each calls a controller command directly.
- CAT context (Ctx.Set*) and CATSetFilterIdx repointed to the adapter,
since CAT reuses these as its command layer.
- Host-dependent handlers (Freq/Band/XvtrBand/Span/Run/Drive/connect/
disconnect/CRUD/mic) and the outgoing PushSpectrum mirror stay in
MainForm for now (WA2/WA3); IWebHost is the placeholder seam.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
