feat: rename WHM→NixServer, cPanel→NixClient, bump v0.2.0

- Rename frontend workspaces: whm/ → nixserver/, cpanel/ → nixclient/
- Rename server route dirs: routes/whm/ → routes/nixserver/, routes/cpanel/ → routes/nixclient/
- Update all API prefixes: /api/whm → /api/nixserver, /api/cpanel → /api/nixclient
- Rename env vars: WHM_PORT → NIXSERVER_PORT, CPANEL_PORT → NIXCLIENT_PORT
- Update config properties: whmPort → nixserverPort, cpanelPort → nixclientPort
- Update all UI labels, login pages, sidebar branding, and error messages
- Update installer and update scripts to match new names
- Add cpanel email route (missing from initial scaffold)
- Add .gitattributes to enforce LF line endings
- Bump version to 0.2.0 across all package.json files

server/src/routes/nixserver/index.ts

@@ -0,0 +1,28 @@
+import type { FastifyInstance } from 'fastify'
+import accountRoutes from './accounts.js'
+import packageRoutes from './packages.js'
+import resellerRoutes from './resellers.js'
+import dnsRoutes from './dns.js'
+import emailRoutes from './email.js'
+import sslRoutes from './ssl.js'
+import phpRoutes from './php.js'
+import serviceRoutes from './services.js'
+import systemRoutes from './system.js'
+import securityRoutes from './security.js'
+import backupRoutes from './backup.js'
+import webserverRoutes from './webserver.js'
+
+export default async function nixserverRoutes(fastify: FastifyInstance) {
+  fastify.register(accountRoutes, { prefix: '/accounts' })
+  fastify.register(packageRoutes, { prefix: '/packages' })
+  fastify.register(resellerRoutes, { prefix: '/resellers' })
+  fastify.register(dnsRoutes, { prefix: '/dns' })
+  fastify.register(emailRoutes, { prefix: '/email' })
+  fastify.register(sslRoutes, { prefix: '/ssl' })
+  fastify.register(phpRoutes, { prefix: '/php' })
+  fastify.register(serviceRoutes, { prefix: '/services' })
+  fastify.register(systemRoutes, { prefix: '/system' })
+  fastify.register(securityRoutes, { prefix: '/security' })
+  fastify.register(backupRoutes, { prefix: '/backup' })
+  fastify.register(webserverRoutes, { prefix: '/webserver' })
+}