Add special awards management features and fix voting/assignment issues

Special Awards:
- Add delete button with confirmation dialog to award detail page
- Add voting window dates (start/end) to award edit page
- Add manual project eligibility management (add/remove projects)
- Show eligibility method (Auto/Manual) in eligibility table
- Auto-set votingStartAt when opening voting if date is in future

Assignment Suggestions:
- Replace toggle with proper tabs UI (Algorithm vs AI Powered)
- Persist AI suggestions when navigating away (stored in database)
- Show suggestion counts on tab badges
- Independent refresh/start buttons per tab

Round Voting:
- Auto-update votingStartAt to now when activating round if date is in future
- Fixes issue where round was opened but voting dates were in future

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/server/routers/round.ts

@@ -251,15 +251,31 @@ export const roundRouter = router({
       })
     )
     .mutation(async ({ ctx, input }) => {
-      // Get previous status for audit
+      // Get previous status and voting dates for audit
       const previousRound = await ctx.prisma.round.findUniqueOrThrow({
         where: { id: input.id },
-        select: { status: true },
+        select: { status: true, votingStartAt: true, votingEndAt: true },
       })
 
+      const now = new Date()
+
+      // When activating a round, if votingStartAt is in the future, update it to now
+      // This ensures voting actually starts when the admin opens the round
+      let votingStartAtUpdated = false
+      const updateData: Parameters<typeof ctx.prisma.round.update>[0]['data'] = {
+        status: input.status,
+      }
+
+      if (input.status === 'ACTIVE' && previousRound.status !== 'ACTIVE') {
+        if (previousRound.votingStartAt && previousRound.votingStartAt > now) {
+          updateData.votingStartAt = now
+          votingStartAtUpdated = true
+        }
+      }
+
       const round = await ctx.prisma.round.update({
         where: { id: input.id },
-        data: { status: input.status },
+        data: updateData,
       })
 
       // Map status to specific action name
@@ -277,7 +293,15 @@ export const roundRouter = router({
           action,
           entityType: 'Round',
           entityId: input.id,
-          detailsJson: { status: input.status, previousStatus: previousRound.status },
+          detailsJson: {
+            status: input.status,
+            previousStatus: previousRound.status,
+            ...(votingStartAtUpdated && {
+              votingStartAtUpdated: true,
+              previousVotingStartAt: previousRound.votingStartAt,
+              newVotingStartAt: now,
+            }),
+          },
           ipAddress: ctx.ip,
           userAgent: ctx.userAgent,
         },