Add central live map backend: chunk/player ingest, Vantage sidecar supervisor and proxy

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DjMbLQujBHunCCu5GpsHaT

panel/server/src/lib.rs

@@ -7,6 +7,7 @@ pub mod auth;
 pub mod config;
 pub mod db;
 pub mod error;
+pub mod livemap;
 pub mod net;
 pub mod packs;
 pub mod routes;
@@ -59,6 +60,7 @@ pub async fn build_state_with_keys(cfg: config::Config, db: sqlx::SqlitePool, yg
         keys: Arc::new(auth::Keys::new(&secret)),
         http: scopenet_core::http::client(),
         login_guard: Arc::new(auth::LoginGuard::default()),
+        livemap: Arc::new(livemap::LiveMap::new(&cfg.data_dir, cfg.vantage_bin.clone(), cfg.vantage_assets.clone(), cfg.vantage_args.clone())),
         cfg: Arc::new(cfg),
     })
 }