Add client/server split and TTS app

Set up FastAPI server, vanilla UI, and deployment scripts for the TTS app, including DB/ffmpeg wiring and Apache config.

server/run.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+cd /home/dsyoon/workspace/tts
+
+PORT="${PORT:-8018}"
+
+if lsof -ti tcp:"${PORT}" >/dev/null 2>&1; then
+  echo "Stopping existing server on port ${PORT}..."
+  lsof -ti tcp:"${PORT}" | xargs -r kill -9
+  sleep 1
+fi
+
+python -m pip install -r requirements.txt
+
+PORT="${PORT}" nohup uvicorn server.main:app --host 0.0.0.0 --port "${PORT}" > server.log 2>&1 &
+echo "Server started (PID: $!). Logs: server.log"