Bump dashboards: bar, icon, forecast and clock widget types

Plumbing only: the widget-type literal and its dtype table on both sides,
the regenerated client, a curated lucide map and four stubs the renderers
are wired to. Also a latching switch and a segmented dropdown, both a
`style` on the control that already publishes and reads back, plus the
option editor a dropdown never had.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HTsT1isxUjw5gtkJk8WhuA

frontend/src/client/schemas.gen.ts

@@ -2907,7 +2907,7 @@ export const WidgetDefSchema = {
         },
         type: {
             type: 'string',
-            enum: ['stat', 'gauge', 'chart', 'markdown', 'agenda', 'notification', 'button', 'switch', 'slider', 'input', 'dropdown'],
+            enum: ['stat', 'gauge', 'chart', 'markdown', 'agenda', 'notification', 'bar', 'icon', 'forecast', 'clock', 'button', 'switch', 'slider', 'input', 'dropdown'],
             title: 'Type'
         },
         title: {