feat: enhance seed script to upsert demo user and link to existing organization

Author: JoachimLK

server/scripts/seed.ts

@@ -18,7 +18,7 @@
 
 import { drizzle } from 'drizzle-orm/postgres-js'
 import postgres from 'postgres'
-import { eq } from 'drizzle-orm'
+import { eq, and } from 'drizzle-orm'
 import { hashPassword } from 'better-auth/crypto'
 import * as schema from '../database/schema'
 
@@ -358,46 +358,97 @@ function generateResponses(jobIndex: number, candidateIndex: number): Record<str
 async function seed() {
   console.log('🌱 Seeding Reqcore demo data...\n')
 
-  // Check if demo org already exists
+  const hashedPassword = await hashPassword(DEMO_PASSWORD)
+
+  // ── Step 1: Upsert demo user (always runs, even if org already exists) ──────
+  // This repairs broken states where the org exists but the user was never
+  // created (or was created with an old email/password after a rename).
+
+  const existingUser = await db
+    .select()
+    .from(schema.user)
+    .where(eq(schema.user.email, DEMO_EMAIL))
+    .limit(1)
+
+  let userId: string
+
+  if (existingUser.length > 0 && existingUser[0]) {
+    // User exists — ensure their credential password is current
+    userId = existingUser[0].id
+    await db
+      .update(schema.account)
+      .set({ password: hashedPassword, updatedAt: new Date() })
+      .where(
+        and(
+          eq(schema.account.userId, userId),
+          eq(schema.account.providerId, 'credential'),
+        ),
+      )
+    console.log(`✅ Demo user verified/updated: ${DEMO_EMAIL}`)
+  }
+  else {
+    // User doesn't exist — create user + credential account
+    userId = id()
+
+    await db.insert(schema.user).values({
+      id: userId,
+      name: 'Demo Recruiter',
+      email: DEMO_EMAIL,
+      emailVerified: true,
+      createdAt: daysAgo(30),
+      updatedAt: daysAgo(30),
+    })
+
+    await db.insert(schema.account).values({
+      id: id(),
+      userId,
+      accountId: userId,
+      providerId: 'credential',
+      password: hashedPassword,
+      createdAt: daysAgo(30),
+      updatedAt: daysAgo(30),
+    })
+
+    console.log(`✅ Created demo user: ${DEMO_EMAIL}`)
+  }
+
+  // ── Step 2: Check if demo org already exists ────────────────────────────────
   const existingOrg = await db
     .select()
     .from(schema.organization)
     .where(eq(schema.organization.slug, DEMO_ORG_SLUG))
     .limit(1)
 
   if (existingOrg.length > 0) {
-    console.log('⚠️  Demo organization already exists. Skipping seed.')
-    console.log('   To re-seed, delete the organization first or reset the database.')
+    // Ensure user is a member of the org (guards against user/org mismatch)
+    const existingMember = await db
+      .select()
+      .from(schema.member)
+      .where(
+        and(
+          eq(schema.member.userId, userId),
+          eq(schema.member.organizationId, existingOrg[0]!.id),
+        ),
+      )
+      .limit(1)
+
+    if (existingMember.length === 0) {
+      await db.insert(schema.member).values({
+        id: id(),
+        userId,
+        organizationId: existingOrg[0]!.id,
+        role: 'owner',
+        createdAt: new Date(),
+      })
+      console.log('✅ Re-linked demo user to existing organization.')
+    }
+
+    console.log('⚠️  Demo organization already exists. Skipping full seed.')
+    console.log('   To re-seed all data, delete the organization first or reset the database.')
     await client.end()
     return
   }
 
-  // 1. Create demo user
-  const userId = id()
-  const hashedPassword = await hashPassword(DEMO_PASSWORD)
-
-  await db.insert(schema.user).values({
-    id: userId,
-    name: 'Demo Recruiter',
-    email: DEMO_EMAIL,
-    emailVerified: true,
-    createdAt: daysAgo(30),
-    updatedAt: daysAgo(30),
-  })
-
-  // Create account (email/password provider)
-  await db.insert(schema.account).values({
-    id: id(),
-    userId,
-    accountId: userId,
-    providerId: 'credential',
-    password: hashedPassword,
-    createdAt: daysAgo(30),
-    updatedAt: daysAgo(30),
-  })
-
-  console.log(`✅ Created demo user: ${DEMO_EMAIL}`)
-
   // 2. Create organization
   const orgId = id()