fix(api): fix Prisma P2028 transaction errors on Neon

- Cache PrismaClient in production (was creating new client per request)
- Move heavy include outside task creation transaction to minimize lock duration
- Add maxWait/timeout options to all interactive transactions

Author: kaizen403

apps/api/src/routes/auth.ts

@@ -128,7 +128,7 @@ router.post('/register', async (req: Request, res: Response) => {
       });
 
       return newUser;
-    });
+    }, { maxWait: 10000, timeout: 15000 });
 
     const token = jwt.sign(
       { userId: user.id, username: user.username },

apps/api/src/routes/projects.ts

@@ -234,7 +234,7 @@ router.patch('/:id', requireAuth, async (req: AuthRequest, res: Response) => {
         },
         include: projectInclude,
       });
-    });
+    }, { maxWait: 10000, timeout: 15000 });
 
     const result = transformProject(project);
     broadcast('project:updated', result);

apps/api/src/routes/tasks.ts

@@ -219,7 +219,9 @@ router.post('/', async (req: Request, res: Response) => {
     let task: any;
 
     if (resolvedTeamId) {
-      task = await prisma.$transaction(async (tx) => {
+      // Create task inside transaction (for atomic issue number increment),
+      // but keep the include outside to minimize lock duration.
+      const created = await prisma.$transaction(async (tx) => {
         const team = await tx.team.update({
           where: { id: resolvedTeamId },
           data: { nextIssueNumber: { increment: 1 } },
@@ -228,7 +230,7 @@ router.post('/', async (req: Request, res: Response) => {
         const number = team.nextIssueNumber - 1;
         const identifier = `${team.key}-${number}`;
 
-        const created = await tx.task.create({
+        return tx.task.create({
           data: {
             title,
             description,
@@ -243,9 +245,13 @@ router.post('/', async (req: Request, res: Response) => {
               create: labelIds.map((labelId) => ({ labelId })),
             },
           },
-          include: taskInclude,
+          select: { id: true },
         });
-        return created;
+      }, { maxWait: 10000, timeout: 15000 });
+
+      task = await prisma.task.findUniqueOrThrow({
+        where: { id: created.id },
+        include: taskInclude,
       });
     } else {
       task = await prisma.task.create({

apps/api/src/routes/teams.ts

@@ -216,7 +216,7 @@ router.delete('/:id', optionalAuth, async (req: AuthRequest, res: Response) => {
       await tx.projectTeam.deleteMany({ where: { teamId: id } });
       await tx.task.updateMany({ where: { teamId: id }, data: { teamId: null } });
       await tx.team.delete({ where: { id } });
-    });
+    }, { maxWait: 10000, timeout: 15000 });
     broadcast('team:deleted', { id });
     res.status(204).send();
   } catch (error: unknown) {

apps/desktop-ui/next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/dev/types/routes.d.ts";
+import "./.next/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

packages/db/src/client.ts

@@ -65,10 +65,7 @@ function getPrismaClient(): ExtendedPrismaClient {
   if (globalForPrisma.prisma) return globalForPrisma.prisma;
 
   const client = createPrismaClient();
-
-  if (process.env.NODE_ENV !== "production") {
-    globalForPrisma.prisma = client;
-  }
+  globalForPrisma.prisma = client;
 
   return client;
 }