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/main.rs

@@ -153,6 +153,23 @@ fn main() {
     app.add_plugins(settled_reach_server::npc::NpcPlugin);
     app.add_plugins(settled_reach_server::storyteller::StorytellerPlugin);
     app.add_plugins(settled_reach_server::settings::SettingsPlugin);
+    app.add_plugins(settled_reach_server::bookmark::BookmarkPlugin);
+
+    // Initialize culture resolver (#679, D-128).
+    // systems.db is shipped read-only alongside the binary.
+    let systems_db_path = std::path::PathBuf::from("data/systems.db");
+    match settled_reach_server::knowledge::CultureResolver::open(&systems_db_path) {
+        Ok(resolver) => {
+            tracing::info!("Culture resolver opened: {:?}", systems_db_path);
+            app.insert_resource(settled_reach_server::knowledge::CultureResolverResource(resolver));
+        }
+        Err(e) => {
+            tracing::warn!(
+                "Culture resolver unavailable ({}). Culture lookups will not work.",
+                e
+            );
+        }
+    }
 
     // Initialize SQLite settings store (#627).
     // Path: alongside save files in the server's working directory.
@@ -341,6 +358,7 @@ fn send_panic_error(app: &App, panic_msg: &str) {
         current_ticker: None,
         settings_response: None,
         economy_snapshot: None,
+        bookmark_catalog: None,
         sim_errors: vec![SimError {
             kind: SimErrorKind::Panic,
             message: format!("Simulation panic: {}", panic_msg),
@@ -376,6 +394,7 @@ fn dump_schedule_graph() {
     app.add_plugins(settled_reach_server::npc::NpcPlugin);
     app.add_plugins(settled_reach_server::storyteller::StorytellerPlugin);
     app.add_plugins(settled_reach_server::settings::SettingsPlugin);
+    app.add_plugins(settled_reach_server::bookmark::BookmarkPlugin);
     app.insert_resource(settled_reach_server::simulation::rng::SimRng::new(0));
 
     // Access Schedules resource directly — schedules are populated by plugins