Fix round completion rate: use evaluations/assignments, closed rounds=100%

The round breakdown was showing 200% for active rounds (assignments/projects)
and 0% for closed rounds. Now correctly computes evaluations/assignments for
active rounds and shows 100% for closed/archived rounds.

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

src/server/routers/program.ts

@@ -34,6 +34,10 @@ export const programRouter = router({
                       _count: {
                         select: { assignments: true, projectRoundStates: true },
                       },
+                      assignments: {
+                        where: { evaluation: { status: 'SUBMITTED' } },
+                        select: { id: true },
+                      },
                     },
                   },
                 },
@@ -52,9 +56,11 @@ export const programRouter = router({
           // Provide `stages` as alias for backward compatibility
           stages: allRounds.map((round: any) => ({
             ...round,
+            assignments: undefined, // don't leak raw assignments array
             _count: {
               projects: round._count?.projectRoundStates || 0,
               assignments: round._count?.assignments || 0,
+              evaluations: round.assignments?.length || 0,
             },
           })),
           // Main rounds array
@@ -68,6 +74,7 @@ export const programRouter = router({
             _count: {
               projects: round._count?.projectRoundStates || 0,
               assignments: round._count?.assignments || 0,
+              evaluations: round.assignments?.length || 0,
             },
           })),
         }