Auto-assign projects to first round, auto-filter on close, pipeline UX consolidation

- New projects (admin create, CSV import, public form) auto-assign to program's
  first round (by sortOrder) when no round is specified
- Closing a FILTERING round auto-starts filtering job (configurable via
  autoFilterOnClose setting, defaults to true)
- Add SUBMISSION_RECEIVED notification type for confirming submissions
- Replace separate List/Pipeline toggle with integrated pipeline view below
  the sortable round list
- Add autoFilterOnClose toggle to filtering round type settings UI

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

src/types/round-settings.ts

@@ -10,6 +10,9 @@ export interface FilteringRoundSettings {
   autoEliminationMinReviews: number // Min reviews required before elimination
   targetAdvancing: number // Target number of projects to advance (e.g., 60)
 
+  // Auto-run filtering when round closes
+  autoFilterOnClose: boolean
+
   // Display options
   showAverageScore: boolean
   showRanking: boolean
@@ -62,6 +65,7 @@ export const defaultFilteringSettings: FilteringRoundSettings = {
   autoEliminationThreshold: 4,
   autoEliminationMinReviews: 0,
   targetAdvancing: 60,
+  autoFilterOnClose: true,
   showAverageScore: true,
   showRanking: true,
 }