Add ESLint + Prettier + EditorConfig tooling at repo root

v1.0 Phase 1.1 — repo-wide lint/format baseline.

- eslint.config.mjs (flat config) lints server, client, shared
- .prettierrc.json, .prettierignore, .editorconfig, .nvmrc
- Root package.json holds shared devDeps; per-package scripts keep
  their typecheck + test runners
- Fix 7 lint issues surfaced by the baseline run:
  - TicketDetail.tsx: replace ternary-with-side-effects with if/else
  - admin/Users.tsx: escape apostrophe in JSX
  - errorHandler.ts: typed err as unknown with ErrorLike refinement
  - users.ts: Prisma.UserUpdateInput instead of Record<string, any>
  - seed.ts: drop unused goddard binding
- Run prettier across tracked sources for a clean formatting baseline

client/src/pages/NewTicket.tsx

@@ -1,19 +1,19 @@
-import { useState, useEffect } from 'react'
-import { useNavigate } from 'react-router-dom'
-import api from '../api/client'
-import Modal from '../components/Modal'
-import CTISelect from '../components/CTISelect'
-import { User } from '../types'
+import { useState, useEffect } from 'react';
+import { useNavigate } from 'react-router-dom';
+import api from '../api/client';
+import Modal from '../components/Modal';
+import CTISelect from '../components/CTISelect';
+import { User } from '../types';
 
 interface NewTicketModalProps {
-  onClose: () => void
+  onClose: () => void;
 }
 
 export default function NewTicketModal({ onClose }: NewTicketModalProps) {
-  const navigate = useNavigate()
-  const [users, setUsers] = useState<User[]>([])
-  const [error, setError] = useState('')
-  const [submitting, setSubmitting] = useState(false)
+  const navigate = useNavigate();
+  const [users, setUsers] = useState<User[]>([]);
+  const [error, setError] = useState('');
+  const [submitting, setSubmitting] = useState(false);
 
   const [form, setForm] = useState({
     title: '',
@@ -23,24 +23,24 @@ export default function NewTicketModal({ onClose }: NewTicketModalProps) {
     categoryId: '',
     typeId: '',
     itemId: '',
-  })
+  });
 
   useEffect(() => {
-    api.get<User[]>('/users').then((r) => setUsers(r.data))
-  }, [])
+    api.get<User[]>('/users').then((r) => setUsers(r.data));
+  }, []);
 
   const handleCTI = (cti: { categoryId: string; typeId: string; itemId: string }) => {
-    setForm((f) => ({ ...f, ...cti }))
-  }
+    setForm((f) => ({ ...f, ...cti }));
+  };
 
   const handleSubmit = async (e: React.FormEvent) => {
-    e.preventDefault()
+    e.preventDefault();
     if (!form.categoryId || !form.typeId || !form.itemId) {
-      setError('Please select a Category, Type, and Item')
-      return
+      setError('Please select a Category, Type, and Item');
+      return;
     }
-    setError('')
-    setSubmitting(true)
+    setError('');
+    setSubmitting(true);
     try {
       const payload: Record<string, unknown> = {
         title: form.title,
@@ -49,22 +49,22 @@ export default function NewTicketModal({ onClose }: NewTicketModalProps) {
         categoryId: form.categoryId,
         typeId: form.typeId,
         itemId: form.itemId,
-      }
-      if (form.assigneeId) payload.assigneeId = form.assigneeId
+      };
+      if (form.assigneeId) payload.assigneeId = form.assigneeId;
 
-      const res = await api.post('/tickets', payload)
-      onClose()
-      navigate(`/${res.data.displayId}`)
+      const res = await api.post('/tickets', payload);
+      onClose();
+      navigate(`/${res.data.displayId}`);
     } catch {
-      setError('Failed to create ticket')
+      setError('Failed to create ticket');
     } finally {
-      setSubmitting(false)
+      setSubmitting(false);
     }
-  }
+  };
 
   const inputClass =
-    'w-full bg-gray-800 border border-gray-700 text-gray-100 placeholder-gray-500 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent'
-  const labelClass = 'block text-sm font-medium text-gray-300 mb-1'
+    'w-full bg-gray-800 border border-gray-700 text-gray-100 placeholder-gray-500 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent';
+  const labelClass = 'block text-sm font-medium text-gray-300 mb-1';
 
   return (
     <Modal title="New Ticket" onClose={onClose} size="lg">
@@ -161,5 +161,5 @@ export default function NewTicketModal({ onClose }: NewTicketModalProps) {
         </div>
       </form>
     </Modal>
-  )
+  );
 }