Live wire response + component display with OOB swaps on all examples

- All 6 examples show Component and Wire response as placeholders that
  fill with actual content when the demo is triggered (via OOB swaps)
- Wire response shows full wire content including component definitions
  (when not cached) and CSS style block
- Component display only includes defs the client doesn't already have,
  matching real sx_response() behaviour
- Add "Clear component cache" button to reset localStorage + in-memory
  component env so next interaction shows component download
- Rebuild tw.css with Tailwind v3.4.19 including sx content paths
- Optimize sx_response() CSS scanning to only scan sent comp_defs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

sx/sxc/examples.sx

@@ -28,10 +28,11 @@
       :class "px-4 py-2 bg-violet-600 text-white rounded hover:bg-violet-700 transition-colors"
       "Load content")))
 
-(defcomp ~click-result ()
+(defcomp ~click-result (&key time)
   (div :class "space-y-2"
     (p :class "text-stone-800 font-medium" "Content loaded!")
-    (p :class "text-stone-500 text-sm" "This was fetched from the server via sx-get and swapped into the target div.")))
+    (p :class "text-stone-500 text-sm"
+      (str "Fetched from the server via sx-get at " time))))
 
 ;; --- Form submission demo ---