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/Breadcrumb.wrn

@@ -34,7 +34,7 @@ label: string = "Breadcrumb"
             <a
               href='{homeHref || "/"}'
               class="wire-breadcrumb__link wire-breadcrumb__home"
-              @click='event.currentTarget.dispatchEvent(new CustomEvent("select", { bubbles: true, detail: { item: { label: homeLabel, href: homeHref || "/", value: "home" }, itemIndex: -1 } }))'
+              @click='output.select({ item: { label: homeLabel, href: homeHref || "/", value: "home" }, itemIndex: -1 })'
             >
               {#if homeIcon === "icon-[lucide--house]"}
                 <span class="icon-[lucide--house] wire-breadcrumb__icon" aria-hidden="true"></span>
@@ -72,7 +72,7 @@ label: string = "Breadcrumb"
                 target='{item.target || ""}'
                 rel='{item.external ? "noopener noreferrer" : (item.rel || "")}'
                 class="wire-breadcrumb__link"
-                @click='event.currentTarget.dispatchEvent(new CustomEvent("select", { bubbles: true, detail: { item: item, itemIndex: itemIndex } }))'
+                @click='output.select({ item: item, itemIndex: itemIndex })'
               >
                 {#if item.icon}
                   <span class='{item.icon} wire-breadcrumb__icon' aria-hidden="true"></span>