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/src/perception/observer/mod.rs

@@ -397,6 +397,9 @@ pub fn compute_observer_snapshot(
     // Consume pending economy snapshot for this tick (#822).
     let economy_snapshot = buffer.pending_economy_response.take();
 
+    // Consume pending bookmark catalog for this tick (#614).
+    let bookmark_catalog = buffer.pending_bookmark_catalog.take();
+
     // Consume pending save/load result for this tick (#553).
     let save_result = buffer.pending_save_result.take();
 
@@ -493,6 +496,7 @@ pub fn compute_observer_snapshot(
         current_ticker,
         settings_response,
         economy_snapshot,
+        bookmark_catalog,
     });
 }