Initial standalone morshu TTS server extracted from the ttstoy bot cog

Self-contained HTTP service with engine, data, start script, systemd unit,
and documentation. Runs independently of the Discord bot on its fixed port.

start.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+# Start script for the Morshu TTS server.
+# Creates a local venv on first run, installs deps, then runs the server.
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+cd "$SCRIPT_DIR"
+
+if [ ! -d venv ]; then
+    echo "Creating virtual environment..."
+    python3 -m venv venv
+    ./venv/bin/pip install --upgrade pip
+    ./venv/bin/pip install -r requirements.txt
+fi
+
+export PORT="${PORT:-33002}"
+exec ./venv/bin/python "$SCRIPT_DIR/server.py"