New "Filter .150–.155" button fetches all connected clients via
GET /api/all-clients (one request per site, grouped by AP MAC),
then hides any AP row that has no client with a last-octet IP
between 150 and 155. Clicking again clears the filter.
The name/site search and IP filter compose (AND logic) via a shared
applyFilters() function. Client data is cached in-memory for the
current page session so repeated toggles don't re-fetch.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Christoph Gasser
d693321ba1