feat: Add universal installer and TUI manager (#26)

* feat: Add universal installer and TUI manager

This vibe-coded project now includes a comprehensive installation system
that simplifies monocoque setup across all major Linux distributions.

Key Features:
- Universal installer (install.sh) with automatic distribution detection
- Installs binaries to ~/.local/share/monocoque (user-local, no root needed)
- Creates launcher scripts in ~/.local/bin (start-simd, start-monocoque, test-monocoque)
- Interactive TUI manager (monocoque-manager) for service management
- Complete uninstaller (tools/uninstall.sh) with selective removal
- Dynamic systemd service generation for auto-start capability

Installation Components:
- install.sh: One-command installation across Arch, Debian/Ubuntu, Fedora, openSUSE
- tools/monocoque-manager: Python TUI for real-time status monitoring
- tools/uninstall.sh: Clean removal with config/log preservation options
- Updated README.md with quick install instructions

Architecture:
- User-local installation (no system pollution)
- Binaries: ~/.local/share/monocoque/{monocoque,simapi,simshmbridge}/
- Configs: ~/.config/{monocoque,simd}/
- Launchers: ~/.local/bin/{start-*,test-*,monocoque-manager}
- Services: ~/.config/systemd/user/ (generated dynamically)

Distribution Support:
- AUR integration for Arch users (fastest installation path)
- Native package manager integration (pacman, apt, dnf, zypper)
- Comprehensive dependency handling and build automation

This reduces installation time from 30-60 minutes to 5-15 minutes while
providing better user experience and easier maintenance.

Tested on Garuda Linux (Arch-based) - successful installation, operation, and cleanup.

* refactor: address PR feedback and improve XDG compliance

- Consolidate installers: removed universal-install.sh in favor of install.sh
- Fix XDG compliance: updated install.sh, uninstall.sh, and monocoque-manager to respect XDG_DATA_HOME, XDG_CONFIG_HOME, and XDG_CACHE_HOME with proper fallbacks
- Remove --no-daemon flag from simd launcher and systemd service as requested
- Improve TUI compatibility: fixed popen execution for Kitty (confirmed working), xfce4-terminal, Alacritty, and xterm
- Add documentation: added references to spacefreak18.github.io/simapi/ in README and installer

tools/uninstall.sh

@@ -0,0 +1,128 @@
+#!/bin/bash
+# Monocoque Uninstaller
+# Removes monocoque and all related components
+
+set -e
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+INSTALL_DIR="${MONOCOQUE_INSTALL_DIR:-${XDG_DATA_HOME:-$HOME/.local/share}/monocoque}"
+CONFIG_DIR="${XDG_CONFIG_HOME:-$HOME/.config}"
+CACHE_DIR="${XDG_CACHE_HOME:-$HOME/.cache}"
+BIN_DIR="$HOME/.local/bin"
+SYSTEMD_DIR="$CONFIG_DIR/systemd/user"
+
+log_info() {
+    echo -e "${BLUE}[INFO]${NC} $1"
+}
+
+log_success() {
+    echo -e "${GREEN}[SUCCESS]${NC} $1"
+}
+
+log_warn() {
+    echo -e "${YELLOW}[WARN]${NC} $1"
+}
+
+log_error() {
+    echo -e "${RED}[ERROR]${NC} $1"
+}
+
+print_header() {
+    echo ""
+    echo "╔══════════════════════════════════════════════════════════════════╗"
+    echo "║                  Monocoque Uninstaller                           ║"
+    echo "╚══════════════════════════════════════════════════════════════════╝"
+    echo ""
+}
+
+print_header
+
+log_warn "This will remove:"
+echo "  • Monocoque installation ($INSTALL_DIR)"
+echo "  • Configuration files ($CONFIG_DIR/monocoque, $CONFIG_DIR/simd)"
+echo "  • Launcher scripts ($BIN_DIR/start-*, test-monocoque)"
+    echo "  • systemd service files ($SYSTEMD_DIR/simd.service)"
+    echo "  • Log files ($CACHE_DIR/monocoque)"
+    echo ""
+echo "This will NOT remove:"
+echo "  • System dependencies (yder, libuv, etc.)"
+echo "  • Compiled simapi library (/usr/local/lib/libsimapi.so)"
+echo ""
+
+read -p "Continue with uninstallation? [y/N]: " confirm
+
+if [[ ! $confirm =~ ^[Yy]$ ]]; then
+    log_info "Uninstallation cancelled"
+    exit 0
+fi
+
+echo ""
+log_info "Starting uninstallation..."
+
+# Stop running services
+log_info "Stopping running services..."
+pkill -x simd 2>/dev/null || true
+pkill -x monocoque 2>/dev/null || true
+systemctl --user stop simd.service 2>/dev/null || true
+systemctl --user disable simd.service 2>/dev/null || true
+
+# Remove installation directory
+if [ -d "$INSTALL_DIR" ]; then
+    log_info "Removing installation directory..."
+    rm -rf "$INSTALL_DIR"
+    log_success "Installation directory removed"
+else
+    log_info "Installation directory not found, skipping"
+fi
+
+# Remove configuration (ask first)
+if [ -d "$CONFIG_DIR/monocoque" ] || [ -d "$CONFIG_DIR/simd" ]; then
+    read -p "Remove configuration files? [y/N]: " remove_config
+    if [[ $remove_config =~ ^[Yy]$ ]]; then
+        rm -rf "$CONFIG_DIR/monocoque" 2>/dev/null || true
+        rm -rf "$CONFIG_DIR/simd" 2>/dev/null || true
+        log_success "Configuration files removed"
+    else
+        log_info "Keeping configuration files"
+    fi
+fi
+
+# Remove launcher scripts
+log_info "Removing launcher scripts..."
+rm -f "$BIN_DIR/start-simd" 2>/dev/null || true
+rm -f "$BIN_DIR/start-monocoque" 2>/dev/null || true
+rm -f "$BIN_DIR/test-monocoque" 2>/dev/null || true
+rm -f "$BIN_DIR/monocoque-manager" 2>/dev/null || true
+
+# Remove systemd services
+if [ -f "$SYSTEMD_DIR/simd.service" ]; then
+    log_info "Removing systemd service files..."
+    rm -f "$SYSTEMD_DIR/simd.service"
+    systemctl --user daemon-reload 2>/dev/null || true
+fi
+
+# Remove logs
+if [ -d "$CACHE_DIR/monocoque" ]; then
+    read -p "Remove log files? [y/N]: " remove_logs
+    if [[ $remove_logs =~ ^[Yy]$ ]]; then
+        rm -rf "$CACHE_DIR/monocoque"
+        log_success "Log files removed"
+    else
+        log_info "Keeping log files"
+    fi
+fi
+
+echo ""
+log_success "Uninstallation complete!"
+echo ""
+log_info "To remove system dependencies and simapi library:"
+echo "  • Remove packages: yder, libuv, argtable, libserialport, etc."
+echo "  • Remove library: sudo rm /usr/local/lib/libsimapi.so*"
+echo "  • Run: sudo ldconfig"
+echo ""
+