Visual redesign, message input, reversed messages, systemd service

- New visual identity: solid dark cards, purple accent, iOS-like feel
- Session replay: newest messages first, message input with send button
- Chat proxy route for sending messages to sessions
- systemd user service with deploy script
- All pages restyled: Pulse, Memory, History, Skills, Cron, Soul, Config

deploy/hermes-os.service

@@ -0,0 +1,18 @@
+[Unit]
+Description=Hermes OS — Mobile dashboard
+After=network.target
+
+[Service]
+Type=simple
+WorkingDirectory=/home/hermes/hermes-os
+Environment=PATH=/home/hermes/.hermes/node/bin:/usr/local/bin:/usr/bin:/bin
+Environment=HERMES_BACKEND_URL=http://127.0.0.1:8643
+Environment=HERMES_GATEWAY_URL=http://127.0.0.1:8642
+Environment=HERMES_SOUL_PATH=/home/hermes/.hermes/SOUL.md
+Environment=NODE_ENV=production
+ExecStart=/home/hermes/.hermes/node/bin/node /home/hermes/hermes-os/.next/standalone/server.js
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=default.target