Add landing page for kjol, documentation

go/wasmruntime/host_native.go

@@ -13,6 +13,20 @@ func Measure(*vdom.Ref) Rect  { return Rect{} }
 func Viewport() Size          { return Size{} }
 func CSSVarPx(string) float64 { return 0 }
 
+// Now is 0 on the server: there is no page load to measure from. A component that
+// reports a timing therefore SSRs an empty reading and fills it in once the client has
+// taken over — which is the honest answer, since the number IS a property of the client.
+func Now() float64 { return 0 }
+
+// The theme is a property of the BROWSER — the OS setting and a localStorage choice,
+// neither of which the server can see. So the server always renders the light theme, and
+// the document's boot script (webui.ThemeBootScript) applies the dark class before the
+// first paint. Nothing here can help with that, and pretending otherwise would just move
+// the flash somewhere harder to find.
+func PrefersDark() bool                      { return false }
+func OnMediaChange(string, func(bool)) Unsub { return func() {} }
+func SetRootClass(string, bool)              {}
+
 func RAF(func()) int     { return 0 }
 func CancelRAF(int)      {}
 func AfterRender(func()) {}