Fix project detail 500 error and round deletion data integrity

- Add missing migration for FileRequirement table and ProjectFile.requirementId
  column (existed in Prisma schema but had no migration, causing all queries
  with `include: { files: true }` to fail with column not found)
- Make projectTags query resilient with try-catch in project.get
- Reset project status to SUBMITTED when round is deleted (prevents orphaned
  ASSIGNED status after ON DELETE SET NULL nullifies roundId)
- Fix round creation/update to allow requiredReviews=0 for filtering rounds
- Parse Zod validation errors in round creation error display

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

prisma/migrations/20260211000000_add_file_requirements/migration.sql

@@ -0,0 +1,30 @@
+-- CreateTable
+CREATE TABLE "FileRequirement" (
+    "id" TEXT NOT NULL,
+    "roundId" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "description" TEXT,
+    "acceptedMimeTypes" TEXT[],
+    "maxSizeMB" INTEGER,
+    "isRequired" BOOLEAN NOT NULL DEFAULT true,
+    "sortOrder" INTEGER NOT NULL DEFAULT 0,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "FileRequirement_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "FileRequirement_roundId_idx" ON "FileRequirement"("roundId");
+
+-- AddForeignKey
+ALTER TABLE "FileRequirement" ADD CONSTRAINT "FileRequirement_roundId_fkey" FOREIGN KEY ("roundId") REFERENCES "Round"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AlterTable: add requirementId to ProjectFile
+ALTER TABLE "ProjectFile" ADD COLUMN "requirementId" TEXT;
+
+-- CreateIndex
+CREATE INDEX "ProjectFile_requirementId_idx" ON "ProjectFile"("requirementId");
+
+-- AddForeignKey
+ALTER TABLE "ProjectFile" ADD CONSTRAINT "ProjectFile_requirementId_fkey" FOREIGN KEY ("requirementId") REFERENCES "FileRequirement"("id") ON DELETE SET NULL ON UPDATE CASCADE;

src/app/(admin)/admin/rounds/new/page.tsx

@@ -417,7 +417,20 @@ function CreateRoundContent() {
               <CardContent className="flex items-center gap-2 py-4">
                 <AlertCircle className="h-5 w-5 text-destructive" />
                 <p className="text-sm text-destructive">
-                  {createRound.error.message}
+                  {(() => {
+                    const msg = createRound.error.message
+                    try {
+                      const parsed = JSON.parse(msg)
+                      if (Array.isArray(parsed)) {
+                        return parsed.map((e: { message?: string; path?: string[] }) =>
+                          e.message || 'Validation error'
+                        ).join('. ')
+                      }
+                    } catch {
+                      // Not JSON, use as-is
+                    }
+                    return msg
+                  })()}
                 </p>
               </CardContent>
             </Card>

src/server/routers/project.ts

@@ -327,17 +327,21 @@ export const projectRouter = router({
               },
             },
           },
-          projectTags: {
-            include: {
-              tag: {
-                select: { id: true, name: true, category: true, color: true },
-              },
-            },
-            orderBy: { confidence: 'desc' },
-          },
         },
       })
 
+      // Fetch project tags separately (table may not exist if migrations are pending)
+      let projectTags: { id: string; projectId: string; tagId: string; confidence: number; tag: { id: string; name: string; category: string | null; color: string | null } }[] = []
+      try {
+        projectTags = await ctx.prisma.projectTag.findMany({
+          where: { projectId: input.id },
+          include: { tag: { select: { id: true, name: true, category: true, color: true } } },
+          orderBy: { confidence: 'desc' },
+        })
+      } catch {
+        // ProjectTag table may not exist yet
+      }
+
       // Check access for jury members
       if (ctx.user.role === 'JURY_MEMBER') {
         const assignment = await ctx.prisma.assignment.findFirst({
@@ -381,6 +385,7 @@ export const projectRouter = router({
 
       return {
         ...project,
+        projectTags,
         teamMembers: teamMembersWithAvatars,
         mentorAssignment: mentorWithAvatar,
       }

src/server/routers/round.ts

@@ -111,7 +111,7 @@ export const roundRouter = router({
         programId: z.string(),
         name: z.string().min(1).max(255),
         roundType: z.enum(['FILTERING', 'EVALUATION', 'LIVE_EVENT']).default('EVALUATION'),
-        requiredReviews: z.number().int().min(1).max(10).default(3),
+        requiredReviews: z.number().int().min(0).max(10).default(3),
         minAssignmentsPerJuror: z.number().int().min(1).max(50).default(5),
         maxAssignmentsPerJuror: z.number().int().min(1).max(100).default(20),
         sortOrder: z.number().int().optional(),
@@ -208,7 +208,7 @@ export const roundRouter = router({
         name: z.string().min(1).max(255).optional(),
         slug: z.string().min(1).max(100).regex(/^[a-z0-9-]+$/).optional().nullable(),
         roundType: z.enum(['FILTERING', 'EVALUATION', 'LIVE_EVENT']).optional(),
-        requiredReviews: z.number().int().min(1).max(10).optional(),
+        requiredReviews: z.number().int().min(0).max(10).optional(),
         minAssignmentsPerJuror: z.number().int().min(1).max(50).optional(),
         maxAssignmentsPerJuror: z.number().int().min(1).max(100).optional(),
         submissionDeadline: z.date().optional().nullable(),
@@ -615,6 +615,12 @@ export const roundRouter = router({
           userAgent: ctx.userAgent,
         })
 
+        // Reset status for projects that will lose their roundId (ON DELETE SET NULL)
+        await tx.project.updateMany({
+          where: { roundId: input.id },
+          data: { status: 'SUBMITTED' },
+        })
+
         // Delete evaluations first to avoid FK constraint on Evaluation.formId
         // (formId FK may not have CASCADE in older DB schemas)
         await tx.evaluation.deleteMany({