fix(csr,ui): deliver component outputs to parent bindings

An output only reaches a parent @binding when the component calls
output.<name>(). Two separate faults meant most of the library never got
there, and both failed silently at each end.

HTML lowercases attribute names, so a parent's @sizeChange registered under
"sizechange" while the component emitted "sizeChange". The lookup missed, fell
through to a DOM dispatch, and the binding was never invoked. That made all 17
camelCase outputs undeliverable -- DataTable.pageChange and .rowClick,
Map.markerClick, ChatBubble.messageClick, LayoutSplitter.sizeChange and the
rest. invokeComponentOutput now falls back to a case-insensitive lookup, and a
csr test fails without it.

Separately, 18 components dispatched hand-built CustomEvents rather than
calling output.*. A bubbling event on the component's own root never reaches a
binding, because parent handlers live in a registry only the output proxy
reads. Card, Footer, Breadcrumb, Accordion, alert, Badge, AnnouncementBar,
AvatarGroup, ToggleCount and InputNumber now emit properly; Marquee, Map,
Timeline, List and SearchBox additionally declare the outputs they were
already firing. Dispatches on window are left alone -- that is how Toaster,
Modal and DataTable signal across component boundaries.

Verified in a browser both ways before and after: an AnnouncementBar
dispatching its own bubbling "dismiss" never reached a page-level @dismiss,
and reached it immediately once it called output.dismiss().

This corrects the audit, which called the LayoutSplitter failure "narrow and
unexplained" and read 32 dead outputs as 16 components needing a rebuild.
"Outputs work elsewhere" was an assumption; the components that worked
happened to use lowercase names and output.*. The dead-output ratchet drops
from 32 to 22, and a new test forbids the raw-CustomEvent pattern outright.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

packages/ui/components/Marquee.wrn

@@ -1,4 +1,10 @@
 component Marquee {
+  outputs {
+    // Fired when the reader pauses the scroll, by hover, focus or the button.
+    pause(payload: { sourceEvent?: Event; [key: string]: string | number | boolean | null | object })
+    resume(payload: { sourceEvent?: Event; [key: string]: string | number | boolean | null | object })
+  }
+
   props {
     size: string = "default"
     color: string = "primary"
@@ -27,8 +33,8 @@ component Marquee {
 
         <div
           class="group relative min-w-0 flex-1 overflow-hidden"
-          @mouseenter='paused = true; event.currentTarget.dispatchEvent(new CustomEvent("pause", { bubbles: true }))'
-          @mouseleave='paused = false; event.currentTarget.dispatchEvent(new CustomEvent("resume", { bubbles: true }))'
+          @mouseenter='paused = true; output.pause({})'
+          @mouseleave='paused = false; output.resume({})'
           @focusin='paused = true'
           @focusout='paused = false'
         >
@@ -77,7 +83,7 @@ component Marquee {
           type="button"
           aria-label='{paused ? "Resume announcements" : "Pause announcements"}'
           class="flex shrink-0 items-center justify-center border-l border-[var(--wire-color-border)] px-4 text-[var(--wire-color-text-muted)] transition hover:bg-[var(--wire-color-surface-soft)] hover:text-[var(--wire-color-text)] focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-inset focus-visible:ring-[var(--wire-color-focus)]"
-          @click='paused = !paused; event.currentTarget.dispatchEvent(new CustomEvent(paused ? "pause" : "resume", { bubbles: true }))'
+          @click='paused = !paused; paused ? output.pause({}) : output.resume({})'
         >
           <span class="icon-[lucide--pause] size-4" data-show='!paused' aria-hidden="true"></span>
           <span class="icon-[lucide--play] size-4" data-show='paused' aria-hidden="true"></span>