Rounds overhaul: full CRUD submission windows, scheduling UI, analytics, design refresh

- Fix special award FK crash: replace 4x raw auditLog.create with logAudit() helper
- Add updateSubmissionWindow + deleteSubmissionWindow mutations to round router
- Add per-round analytics (_count, juryGroup) to competition.getById
- Remove redundant acceptedCategories from intake config
- Rewrite submission window manager with full CRUD, all fields, date pickers
- Add round scheduling card (open/close dates) to round detail page
- Add project count, assignment count, jury group to round list cards
- Visual redesign: pipeline view, brand colors, progress bars, enhanced cards

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

src/server/routers/round.ts

@@ -293,6 +293,79 @@ export const roundRouter = router({
       return window
     }),
 
+  /**
+   * Update an existing submission window
+   */
+  updateSubmissionWindow: adminProcedure
+    .input(
+      z.object({
+        id: z.string(),
+        name: z.string().min(1).max(255).optional(),
+        slug: z.string().min(1).max(100).regex(/^[a-z0-9-]+$/).optional(),
+        roundNumber: z.number().int().min(1).optional(),
+        windowOpenAt: z.date().nullable().optional(),
+        windowCloseAt: z.date().nullable().optional(),
+        deadlinePolicy: z.enum(['HARD_DEADLINE', 'FLAG', 'GRACE']).optional(),
+        graceHours: z.number().int().min(0).nullable().optional(),
+        lockOnClose: z.boolean().optional(),
+        sortOrder: z.number().int().optional(),
+      })
+    )
+    .mutation(async ({ ctx, input }) => {
+      const { id, ...data } = input
+      const window = await ctx.prisma.$transaction(async (tx) => {
+        const updated = await tx.submissionWindow.update({
+          where: { id },
+          data,
+        })
+        await logAudit({
+          prisma: tx,
+          userId: ctx.user.id,
+          action: 'UPDATE',
+          entityType: 'SubmissionWindow',
+          entityId: id,
+          detailsJson: data,
+          ipAddress: ctx.ip,
+          userAgent: ctx.userAgent,
+        })
+        return updated
+      })
+      return window
+    }),
+
+  /**
+   * Delete a submission window (only if no files uploaded)
+   */
+  deleteSubmissionWindow: adminProcedure
+    .input(z.object({ id: z.string() }))
+    .mutation(async ({ ctx, input }) => {
+      // Check if window has uploaded files
+      const window = await ctx.prisma.submissionWindow.findUniqueOrThrow({
+        where: { id: input.id },
+        select: { id: true, name: true, _count: { select: { projectFiles: true } } },
+      })
+      if (window._count.projectFiles > 0) {
+        throw new TRPCError({
+          code: 'BAD_REQUEST',
+          message: `Cannot delete window "${window.name}" — it has ${window._count.projectFiles} uploaded files. Remove files first.`,
+        })
+      }
+      await ctx.prisma.$transaction(async (tx) => {
+        await tx.submissionWindow.delete({ where: { id: input.id } })
+        await logAudit({
+          prisma: tx,
+          userId: ctx.user.id,
+          action: 'DELETE',
+          entityType: 'SubmissionWindow',
+          entityId: input.id,
+          detailsJson: { name: window.name },
+          ipAddress: ctx.ip,
+          userAgent: ctx.userAgent,
+        })
+      })
+      return { success: true }
+    }),
+
   /**
    * Open a submission window
    */