Fix user creation errors by handling empty emails properly

Adjust user creation schema to allow null emails, update data handling to convert empty strings to null, and provide a SQL script to clean up existing duplicate empty email entries, resolving the `users_email_key` constraint violation.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: a8a78c07-e900-425c-a577-5b4c5894379d
Replit-Commit-Checkpoint-Type: full_checkpoint
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attached_assets/Pasted--group-created-at-2025-07-22-11-09-08-977622-group-updated-at-2025-07-28-1-1754942841066_1754942841066.txt

@@ -0,0 +1,201 @@
+
+      
+    group_created_at: '2025-07-22 11:09:08.977622',
+
+    group_updated_at: '2025-07-28 18:25:49.452346'
+
+  }
+
+]
+
+✅ Processed 1 groups for user _1753266816257
+
+🔐 API /api/users - Returning: { isArray: true, length: 7, totalGroups: 6 }
+
+GET /api/users 304 in 81ms
+
+HEAD /api/health 200 in 1ms
+
+🔍 getUserWithGroups called for user: admin_local
+
+🔍 Querying user_groups for user: admin_local
+
+🔍 Found 0 group assignments for user admin_local
+
+🔍 Raw query result: []
+
+✅ Processed 0 groups for user admin_local
+
+🔍 getUserWithGroups called for user: admin_local
+
+🔍 Querying user_groups for user: admin_local
+
+🔍 Found 0 group assignments for user admin_local
+
+🔍 Raw query result: []
+
+✅ Processed 0 groups for user admin_local
+
+🔍 POST /api/users - Creating new user
+
+📥 Request body: {
+
+  "email": "",
+
+  "firstName": "",
+
+  "lastName": "",
+
+  "username": "ff292m",
+
+  "password": "ff292m",
+
+  "role": "manager",
+
+  "id": "_1754942821925"
+
+}
+
+🔍 getUserWithGroups called for user: admin_local
+
+🔍 Querying user_groups for user: admin_local
+
+🔍 Found 0 group assignments for user admin_local
+
+🔍 Raw query result: []
+
+✅ Processed 0 groups for user admin_local
+
+🔍 Parsing user data...
+
+✅ User data parsed successfully
+
+🔒 Hashing password...
+
+✅ Password hashed successfully
+
+🔍 Generated user ID: _1754942821925
+
+🔍 Creating user in database...
+
+🔍 Storage createUser called with: ff292m
+
+❌ Storage createUser error: error: duplicate key value violates unique constraint "users_email_key"
+
+    at /app/node_modules/pg-pool/index.js:45:11
+
+    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
+
+    at async file:///app/node_modules/drizzle-orm/node-postgres/session.js:83:22
+
+    at async DatabaseStorage.createUser (file:///app/dist/index.js:989:26)
+
+    at async file:///app/dist/index.js:3993:23 {
+
+  length: 192,
+
+  severity: 'ERROR',
+
+  code: '23505',
+
+  detail: 'Key (email)=() already exists.',
+
+  hint: undefined,
+
+  position: undefined,
+
+  internalPosition: undefined,
+
+  internalQuery: undefined,
+
+  where: undefined,
+
+  schema: 'public',
+
+  table: 'users',
+
+  column: undefined,
+
+  dataType: undefined,
+
+  constraint: 'users_email_key',
+
+  file: 'nbtinsert.c',
+
+  line: '664',
+
+  routine: '_bt_check_unique'
+
+}
+
+❌ Storage error code: 23505
+
+❌ Storage error constraint: users_email_key
+
+❌ Error creating user: error: duplicate key value violates unique constraint "users_email_key"
+
+    at /app/node_modules/pg-pool/index.js:45:11
+
+    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
+
+    at async file:///app/node_modules/drizzle-orm/node-postgres/session.js:83:22
+
+    at async DatabaseStorage.createUser (file:///app/dist/index.js:989:26)
+
+    at async file:///app/dist/index.js:3993:23 {
+
+  length: 192,
+
+  severity: 'ERROR',
+
+  code: '23505',
+
+  detail: 'Key (email)=() already exists.',
+
+  hint: undefined,
+
+  position: undefined,
+
+  internalPosition: undefined,
+
+  internalQuery: undefined,
+
+  where: undefined,
+
+  schema: 'public',
+
+  table: 'users',
+
+  column: undefined,
+
+  dataType: undefined,
+
+  constraint: 'users_email_key',
+
+  file: 'nbtinsert.c',
+
+  line: '664',
+
+  routine: '_bt_check_unique'
+
+}
+
+❌ Error type: DatabaseError
+
+❌ Error code: 23505
+
+❌ Error constraint: users_email_key
+
+❌ Error stack: error: duplicate key value violates unique constraint "users_email_key"
+
+    at /app/node_modules/pg-pool/index.js:45:11
+
+    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
+
+    at async file:///app/node_modules/drizzle-orm/node-postgres/session.js:83:22
+
+    at async DatabaseStorage.createUser (file:///app/dist/index.js:989:26)
+
+    at async file:///app/dist/index.js:3993:23
+
+POST /api/users 409 in 109ms