fix: generate chobby_config.json in lobby .sdd for launcherless bundle

The BAR desktop launcher normally reads dist_cfg/config.json and
extracts json_files.chobby_config.json, writing it to the game data
directory before starting the engine. Without the launcher present,
Chobby Lua code fails to find the file via VFS, causing the Chobby
global to be nil and crashing every widget that references it.

Write chobby_config.json directly into the Chobby .sdd with the BAR
server address and "byar" game config so the lobby initialises
correctly.

Author: Mearman

.github/workflows/macos-build.yml

@@ -339,6 +339,24 @@ jobs:
           sed -i.bak "s/\\\$VERSION/$LOBBY_VERSION/g" "$LOBBY_SDD/modinfo.lua"
           rm -f "$LOBBY_SDD/modinfo.lua.bak"
 
+          # The BAR launcher normally reads dist_cfg/config.json and
+          # extracts the json_files.chobby_config.json entry, writing it
+          # to the game data directory before launching the engine.
+          # Since this bundle has no launcher, we generate the file
+          # directly inside the Chobby .sdd so the VFS can find it.
+          cat > "$LOBBY_SDD/chobby_config.json" <<CHOBBY_CFG
+{
+  "server": {
+    "address": "server4.beyondallreason.info",
+    "port": 8200,
+    "protocol": "spring",
+    "serverName": "BAR"
+  },
+  "game": "byar"
+}
+CHOBBY_CFG
+
+
           echo "Game content staged:"
           echo "  Game: Beyond All Reason $GAME_VERSION"
           echo "  Lobby: BYAR Chobby $LOBBY_VERSION"