Replace 4-page paginated form (17 fields for HTTP) with a 2-page
type-aware layout. Page 1 shows core fields + type-specific target
(URL for HTTP, Hostname for ping, etc). Page 2 shows configuration
with pre-filled defaults. Group type gets 1 page.
Form rebuilds dynamically when monitor type changes, preserving
all entered values via pointer-bound siteFormData. Focus returns
to the Type select after rebuild so users can continue forward.
WithWidth set explicitly on rebuild to prevent placeholder truncation.
handleClick set m.cursor but returned without calling syncSelectedID,
causing the next refreshLive tick to snap the cursor back to the
previously selected site.
lerko
