refactor: module-based strategy architecture

- Add sync_from_upstream.sh: clones Flowseal repo, merges lists/hosts, auto-detects new .bat strategies
- Add strategies/*.conf config files (extracted from .bat)
- Rewrite run_strategy.sh: loads .conf, substitutes %BIN%/%LISTS%/%GAME_*% using sed (no envsubst)
- Rewrite update.sh: pipeline is now sync→rebuild→test→install
- Add ensure_wrappers.sh: auto-creates general_*.sh wrappers from .conf
- Fix all 'local outside function' runtime bugs
- install.sh now calls sync_from_upstream.sh first

install.sh

@@ -30,6 +30,9 @@ if [[ "${ans:-Y}" != [yY]* ]]; then
     exit 0
 fi
 
+# Step 0: Sync upstream lists and strategies
+bash "$SCRIPT_DIR/sync_from_upstream.sh" || true
+
 # Step 1: Setup
 echo ""
 echo "[*] Step 1/4: Running setup..."