Speedtest: resize window to fit modernized UI (460×430)

Old size was 600×220 (flat Semantic UI statistics row).
New layout stacks gauge (172 px) + result cards + progress bar + button
vertically; content height is ~395 px so 430 px gives comfortable margin.
Width reduced from 600 to 460 to match the 400 px max-width content area.

https://claude.ai/code/session_01QP5ab5t2ZekwBFCNB57WEq

src/web/Speedtest/init.agi

@@ -9,7 +9,7 @@ var moduleLaunchInfo = {
 	SupportFW: true,
 	LaunchFWDir: "Speedtest/index.html",
 	SupportEmb: false,
-	InitFWSize: [600, 220]
+	InitFWSize: [460, 430]
 }
 
 //Register the module