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

server/src/index.ts

@@ -1,41 +1,41 @@
-import 'express-async-errors'
-import express from 'express'
-import cors from 'cors'
-import dotenv from 'dotenv'
+import 'express-async-errors';
+import express from 'express';
+import cors from 'cors';
+import dotenv from 'dotenv';
 
-import authRoutes from './routes/auth'
-import ticketRoutes from './routes/tickets'
-import ctiRoutes from './routes/cti'
-import userRoutes from './routes/users'
-import { authenticate } from './middleware/auth'
-import { errorHandler } from './middleware/errorHandler'
-import { startAutoCloseJob } from './jobs/autoClose'
+import authRoutes from './routes/auth';
+import ticketRoutes from './routes/tickets';
+import ctiRoutes from './routes/cti';
+import userRoutes from './routes/users';
+import { authenticate } from './middleware/auth';
+import { errorHandler } from './middleware/errorHandler';
+import { startAutoCloseJob } from './jobs/autoClose';
 
-dotenv.config()
+dotenv.config();
 
 if (!process.env.JWT_SECRET) {
-  console.error('FATAL: JWT_SECRET is not set')
-  process.exit(1)
+  console.error('FATAL: JWT_SECRET is not set');
+  process.exit(1);
 }
 
-const app = express()
+const app = express();
 
-app.use(cors({ origin: process.env.CLIENT_URL || 'http://localhost:5173' }))
-app.use(express.json())
+app.use(cors({ origin: process.env.CLIENT_URL || 'http://localhost:5173' }));
+app.use(express.json());
 
 // Public
-app.use('/api/auth', authRoutes)
+app.use('/api/auth', authRoutes);
 
 // Protected
-app.use('/api/tickets', authenticate, ticketRoutes)
-app.use('/api/cti', authenticate, ctiRoutes)
-app.use('/api/users', authenticate, userRoutes)
+app.use('/api/tickets', authenticate, ticketRoutes);
+app.use('/api/cti', authenticate, ctiRoutes);
+app.use('/api/users', authenticate, userRoutes);
 
-app.use(errorHandler)
+app.use(errorHandler);
 
-startAutoCloseJob()
+startAutoCloseJob();
 
-const PORT = Number(process.env.PORT) || 3000
+const PORT = Number(process.env.PORT) || 3000;
 app.listen(PORT, () => {
-  console.log(`Server running on port ${PORT}`)
-})
+  console.log(`Server running on port ${PORT}`);
+});