From 6487f4b209554fdb29c6d67c5eb9f83445c991ba Mon Sep 17 00:00:00 2001
From: Matt <matt@Matt-Surface.local>
Date: Tue, 28 Apr 2026 18:34:49 +0200
Subject: [PATCH] =?UTF-8?q?feat:=20schema=20=E2=80=94=20mentor=20assignmen?=
 =?UTF-8?q?t=20drop=20tracking?=
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Adds 3 nullable fields to MentorAssignment for drop lifecycle:
- droppedAt: timestamp of drop (null while active)
- droppedReason: free text (required when droppedAt is set)
- droppedBy: 'mentor' | 'admin' | 'finalist_unconfirmed'

Migration is purely additive: no DROP, no ALTER COLUMN, no RENAME.
All existing rows automatically get NULL for the new columns.
---
 .../20260428163421_add_mentor_drop_fields/migration.sql      | 4 ++++
 prisma/schema.prisma                                         | 5 +++++
 2 files changed, 9 insertions(+)
 create mode 100644 prisma/migrations/20260428163421_add_mentor_drop_fields/migration.sql

diff --git a/prisma/migrations/20260428163421_add_mentor_drop_fields/migration.sql b/prisma/migrations/20260428163421_add_mentor_drop_fields/migration.sql
new file mode 100644
index 0000000..422bb20
--- /dev/null
+++ b/prisma/migrations/20260428163421_add_mentor_drop_fields/migration.sql
@@ -0,0 +1,4 @@
+-- AlterTable
+ALTER TABLE "MentorAssignment" ADD COLUMN     "droppedAt" TIMESTAMP(3),
+ADD COLUMN     "droppedBy" TEXT,
+ADD COLUMN     "droppedReason" TEXT;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index d5ccdbd..17bd691 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -1285,6 +1285,11 @@ model MentorAssignment {
   completionStatus String    @default("in_progress") // 'in_progress' | 'completed' | 'paused'
   lastViewedAt     DateTime?
 
+  // Drop tracking — null while assignment is active
+  droppedAt     DateTime?
+  droppedReason String?   @db.Text
+  droppedBy     String? // 'mentor' | 'admin' | 'finalist_unconfirmed'
+
   // ── Competition/Round architecture — workspace activation ──
   workspaceEnabled Boolean   @default(false)
   workspaceOpenAt  DateTime?