Add local smoke test script for faster iteration

Added test-smoke.sh so developers can test locally before pushing to CI.

Usage:
  ./test-smoke.sh

The script:
- Downloads BAR engine if needed
- Sets up game directory structure
- Creates Spring config (disables audio)
- Runs SpringBoard for 10 seconds with Xvfb
- Validates LuaUI loaded and checks for crashes
- Reports results

This allows testing the smoke test logic locally without waiting for CI,
making iteration much faster.

Author: claude

test-smoke.sh

@@ -0,0 +1,136 @@
+#!/bin/bash
+# Local smoke test runner
+# Run this script to test SpringBoard locally before pushing to CI
+
+set -e
+
+echo "=== SpringBoard Local Smoke Test ==="
+echo ""
+
+# Check if we're in the right directory
+if [ ! -f "modinfo.lua" ]; then
+    echo "Error: Run this script from SpringBoard-Core root directory"
+    exit 1
+fi
+
+# Check dependencies
+echo "Checking dependencies..."
+command -v wget >/dev/null 2>&1 || { echo "Error: wget not installed"; exit 1; }
+command -v 7z >/dev/null 2>&1 || { echo "Error: p7zip not installed"; exit 1; }
+command -v xvfb-run >/dev/null 2>&1 || { echo "Error: xvfb not installed"; exit 1; }
+echo "✓ Dependencies OK"
+echo ""
+
+# Download engine if not present
+if [ ! -f "spring" ]; then
+    echo "Downloading BAR Engine..."
+    wget -q "https://github.com/beyond-all-reason/spring/releases/download/spring_bar_%7BBAR105%7D105.1.1-2472-ga5aa45c/spring_bar_.BAR105.105.1.1-2472-ga5aa45c_linux-64-minimal-portable.7z"
+    7z x -y "spring_bar_.BAR105.105.1.1-2472-ga5aa45c_linux-64-minimal-portable.7z"
+    rm *.7z
+    chmod +x spring
+    echo "✓ Engine downloaded"
+else
+    echo "✓ Engine already present"
+fi
+echo ""
+
+# Setup game directory
+echo "Setting up game directory..."
+mkdir -p games
+ln -sf "$(pwd)" "games/SpringBoard Core.sdd"
+echo "✓ Game directory set up"
+echo ""
+
+# Create config to disable audio
+echo "Creating Spring config..."
+mkdir -p test-data
+cat > test-data/springsettings.cfg << 'EOF'
+snd_disable = 1
+snd_volmaster = 0
+EOF
+echo "✓ Config created"
+echo ""
+
+# Create script.txt
+echo "Creating Spring script..."
+cat > script.txt << 'EOF'
+[GAME]
+{
+  GameType=SpringBoard Core;
+  MapName=sb_initial_blank_10x8;
+  IsHost=1;
+  MyPlayerName=TestPlayer;
+  [MODOPTIONS]
+  {
+    MapSeed=42;
+    new_map_x=10;
+    new_map_y=8;
+  }
+  [PLAYER0]
+  {
+    Name=TestPlayer;
+    Team=0;
+    IsFromDemo=0;
+    Spectator=1;
+  }
+  [TEAM0]
+  {
+    TeamLeader=0;
+    AllyTeam=0;
+  }
+  [ALLYTEAM0]
+  {
+  }
+}
+EOF
+echo "✓ Script created"
+echo ""
+
+# Run the test
+echo "=== Running SpringBoard with Xvfb ==="
+echo "This will run for 10 seconds..."
+echo ""
+
+timeout 10s xvfb-run -a -s "-screen 0 1024x768x24" \
+  ./spring --write-dir $(pwd)/test-data script.txt || EXIT_CODE=$?
+
+sleep 2
+
+echo ""
+echo "=== Test Results ==="
+echo "Exit code: ${EXIT_CODE:-0}"
+echo ""
+
+# Validate results
+if [ ! -f test-data/infolog.txt ]; then
+    echo "✗ FAIL: No infolog.txt generated"
+    exit 1
+fi
+
+if grep -q "CrashHandler.*Error.*Aborted\|XIO.*fatal.*error\|terminate called" test-data/infolog.txt; then
+    echo "✗ FAIL: Spring crashed"
+    echo ""
+    tail -50 test-data/infolog.txt
+    exit 1
+fi
+
+if ! grep -q "LuaUI.*Loaded\|Loading LuaUI" test-data/infolog.txt; then
+    echo "✗ FAIL: LuaUI did not load"
+    echo ""
+    tail -50 test-data/infolog.txt
+    exit 1
+fi
+
+echo "✓ LuaUI loaded"
+
+if grep -q -i "rmlui" test-data/infolog.txt; then
+    echo "✓ RmlUi found in logs"
+    grep -i "rmlui" test-data/infolog.txt | head -5
+else
+    echo "⚠ Warning: No RmlUi messages"
+fi
+
+echo ""
+echo "✓✓✓ SMOKE TEST PASSED ✓✓✓"
+echo ""
+echo "View full log: test-data/infolog.txt"