feat: add test VM setup script for Linux Mint/Ubuntu

scripts/setup-test-vm.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+# Viet+ — Linux Mint / Ubuntu test VM setup script
+# Usage: curl -fsSL <url> | bash
+#   or: bash scripts/setup-test-vm.sh
+set -euo pipefail
+
+RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[0;33m'; NC='\033[0m'
+
+echo -e "${GREEN}=== Viet+ Test VM Setup ===${NC}"
+
+# 1. Install system deps
+echo -e "${YELLOW}[1/5] Installing system dependencies...${NC}"
+sudo apt update -y
+sudo apt install -y build-essential pkg-config libx11-dev libxtst-dev \
+  libdbus-1-dev libevdev-dev libwayland-dev curl git \
+  libevdev2 libdbus-1-3 libx11-6 libxtst6 libwayland-client0 \
+  wl-clipboard xclip
+
+# 2. Install Rust if missing
+echo -e "${YELLOW}[2/5] Installing Rust...${NC}"
+if ! command -v cargo &>/dev/null; then
+  curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+  source "$HOME/.cargo/env"
+else
+  echo "  Rust already installed."
+fi
+
+# 3. Clone and build
+echo -e "${YELLOW}[3/5] Cloning and building...${NC}"
+if [ ! -d vietc ]; then
+  git clone https://github.com/vndangkhoa/vietc.git
+fi
+cd vietc && git checkout staging && cargo build --release
+
+# 4. Install
+echo -e "${YELLOW}[4/5] Installing...${NC}"
+sudo ./install.sh
+
+# 5. Done
+echo -e "${YELLOW}[5/5] Setup complete!${NC}"
+echo -e "${GREEN}========================================${NC}"
+echo -e "${GREEN}  Reboot to apply group + udev changes  ${NC}"
+echo -e "${GREEN}  Then: vietc-tray &                     ${NC}"
+echo -e "${GREEN}  Or:   sudo vietc-daemon                ${NC}"
+echo -e "${GREEN}========================================${NC}"
+echo ""
+echo "Quick test:"
+echo "  cargo run --bin vietc-cli"
+echo ""
+echo "Terminal typing (VNI mode auto-enabled in terminals):"
+echo "  cha2o       -> chào"
+echo "  ba5n        -> bạn"
+echo "  to6i te6n la2 Khoa3 -> tôi tên là Khỏa"
+echo "  d9o7i       -> đời"
+echo ""
+echo "Telex (Ctrl+LeftShift to switch):"
+echo "  chaof       -> chào"
+echo "  banj        -> bạn"
+echo "  tooi teen laf Khoar -> tôi tên là Khỏa"
+echo "  ddoi        -> đời"
+echo ""
+echo "Macros:"
+echo "  ko[space]   -> không"
+echo "  dc[space]   -> được"
+echo "  vs[space]   -> với"