feat(simulation): bookmark definition system with bridge protocol (#614)

BookmarkPlugin, BookmarkRegistry, SelectedBookmark resources. Tycoon bookmark
defined; PROTOCOL_VERSION bumped to 22. RequestBookmarkCatalog + ConfirmBookmark
actions wired into process_player_input via BookmarkInputParams SystemParam bundle
(resolves Bevy's 16-system-param limit). build_catalog() accepts optional
CultureResolver for D-128 location-culture mapping. Snapshot delivery at tick-0
via SnapshotBuffer.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server/tests/gen_fixtures.rs

@@ -54,6 +54,8 @@ fn fixture_snapshot(tick: u64, entities: Vec<VisibleEntity>) -> ObserverSnapshot
         sim_errors: vec![],
         current_ticker: None,
         settings_response: None,
+        economy_snapshot: None,
+        bookmark_catalog: None,
     }
 }
 
@@ -251,6 +253,8 @@ fn generate_msgpack_fixtures() {
         sim_errors: vec![],
         current_ticker: None,
         settings_response: None,
+        economy_snapshot: None,
+        bookmark_catalog: None,
     };
     write_fixture(
         "snapshot_v2_full",
@@ -418,6 +422,8 @@ fn generate_msgpack_fixtures() {
         sim_errors: vec![],
         current_ticker: None,
         settings_response: None,
+        economy_snapshot: None,
+        bookmark_catalog: None,
     };
     write_fixture(
         "snapshot_full",