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/csr/src/reactive-runtime.ts

@@ -3927,6 +3927,25 @@ export const REACTIVE_RUNTIME = String.raw`
     if (!root || !name) return undefined;
     var registry = root.__wrnexusOutputHandlers;
     var handlers = registry && registry[name];
+    /*
+     * A parent writes @sizeChange, but HTML lowercases attribute names, so the
+     * handler is registered under "sizechange" while the component emits
+     * "sizeChange". Without this the lookup misses, the call falls through to
+     * dispatchComponentEvent, and the binding is never invoked -- silently.
+     * Every camelCase output in the library was undeliverable because of it.
+     */
+    if ((!handlers || !handlers.size) && registry) {
+      var lower = String(name).toLowerCase();
+      if (lower !== name) handlers = registry[lower];
+      if (!handlers || !handlers.size) {
+        for (var key in registry) {
+          if (key.toLowerCase() === lower && registry[key] && registry[key].size) {
+            handlers = registry[key];
+            break;
+          }
+        }
+      }
+    }
     if (handlers && handlers.size) {
       var values = [];
       handlers.forEach(function (handler) { values.push(handler(payload)); });