chore(deploy): keep start scripts and systemd units in deploy/

The three services become quant-trading-monitor, quant-trading-api and
quant-trading-vite, run from /home/gahow/projects/quant-trading. Their
units were previously untracked files in ~/.config/systemd/user.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

deploy/start-web-vite.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../web" && pwd)"
+cd "${ROOT_DIR}"
+
+export PATH="/home/gahow/.nvm/versions/node/v24.13.1/bin:$PATH"
+
+# The public HTTPS entrypoint is nginx on :5443. Keep Vite as a localhost-only
+# upstream so the development server is not exposed as a second LAN entrypoint.
+exec npx vite --host 127.0.0.1 --port 5174