With realms in more than one category, the realm list shows the stock category tabs, so every realm can be reached (#467)

With realms in more than one category, the realm list shows the stock category tabs, so every realm can be reached. Before, it listed only the first category's realms and had no way to the rest.

- **The Region** is `Wow.ini`'s `[WoW Config] Region`, read through the archive chain as `0x40249d` loads it (the stock install ships it in `interface.MPQ`), with the section and key compared case-insensitively (`0x445356`, `0x4453cb`) and the value parsed as `0x445470` does. It is 0 when the file or the key is missing.
- **The categories** are the `Cfg_Categories.dbc` rows whose Region column equals it, in file order (`0x46e300`): id from column 0, name from the row.
- **Placement** (`0x46e510`): a realm's category byte 0 takes the first category's id (`0x46e5b8`), then joins every category with that id (`0x46e60b`). A byte matching no category puts the realm on no tab, as in 1.12.1. Tab ordinals count the non-empty categories only (`0x46edf0`), and the load-band statistics still run over every realm.
- **The tabs** are built from `RealmList.xml`: hidden for one category, `RealmListTab1`..`N` with the category names for two to eight, the front one raised and disabled. A click fronts the tab and re-lists (`RealmListTab_OnClick`), the highlight falls back to the current realm or none, and the scroll clamps to the new tab. Change Realm and `OnShow` keep the stored category (`0x46f188`, `0x46f400`).
- **No Region rows**: every realm lists on one untabbed page. The reference reads a NULL category there (`0x46f26a`, `0x46e5b8`), and benilla does not copy the fault.
- **Logging in** by name, the remembered or current realm, still searches every realm, as the reference resolves by name.
- A dev capture, `WOW_CAPTURE=glue-realmlist`, shows two tabs over five invented realms.

Checked: tests for the Region read, the category rows for a US and an EU Region from the install's DBC, placement (byte 0 folded, an unmatched byte on no tab), the strip hidden for one category and named for two, a tab click through the real click path, the highlight and scroll on a switch, the stored category across Change Realm, the statistics over every realm, and the no-rows fallback. Each fails with its piece undone. Gates and the smoke run green on macOS; no platform seam touched.

Fixes #362

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

docs/MAP.md

@@ -104,7 +104,7 @@
 - **benilla-adt** (lib.rs): combined_alpha 
 - **benilla-app** (lib.rs): addon_harness area area_poi area_trigger asset_churn aura_visual bindings blob_shadow bowstring camera_shake capture char_create char_select chat_bubble chr_classes cinematic combat_log combat_text console crash creature_anim cursor cvars death debug_panel dev doodad_events entities fishing_line footprints game_plugins game_tip glue glue_strings go_anim go_templates hover_log items loading_screen local_state login minimap name_persist nameplates names net npc_text opaque2d pending_item_ops perf pipe_warm player poi_marker portrait preflight probe_shield query_cache quest_markers raid_marks ranged_flex realm_select realmlist run_mode screen_fade screenshot shaders shutdown smart_rect sound spell swing_refusal target test_support text_filter text_reshape textinput transport tutorial ui_action ui_auction ui_aura ui_bank ui_battlefield ui_battlefield_positions ui_battlefield_score ui_bind_confirm ui_binder ui_cast ui_char ui_chat ui_craft ui_dialog_verbs ui_dressup ui_duel ui_follow ui_gamma ui_gm_ticket ui_gossip ui_guild ui_hide ui_honor ui_inspect ui_instance ui_item_text ui_items ui_layout ui_logout ui_loot ui_loot_roll ui_macro ui_mail ui_merchant ui_mirror ui_models ui_net ui_party ui_pass ui_pet ui_pet_book ui_pet_doll ui_pet_stats ui_petition ui_quest ui_quest_log ui_quest_share ui_reputation ui_saved ui_script ui_session ui_shapeshift ui_social ui_spellbook ui_stable ui_summon ui_tabard ui_talent ui_talent_wipe ui_taxi ui_text ui_tooltip ui_trade ui_tradeskill ui_trainer ui_unit ui_world_map video vplates weapon_trail world_backdrop world_state world_state_ui 
 - **benilla-assets** (lib.rs): adt anim_rng blp column_grid coords gpu_blp m2 materials minimap_grid model spatial_cache terrain tex_filter trace wdt wmo world_assets 
-- **benilla-formats** (lib.rs): anim_data area_poi area_sound area_table area_trigger auction_house bank_bag_slot_prices camera_shakes chain characters chat_channels chr_classes cinematics creature_families creature_sound creature_types creatures dbc death_thud durability elevators emit_timing emote_text emotes environmental_damage exhaustion factions footsteps game_tips gameobjects garble gm_ticket_category ground_effects install item_random_properties item_sounds item_visuals itembagfamily itemclass items itemsets itemsubclass languages light liquid loading_screen lock lock_type macro_icons maps material minimap_translate models npc_greeting page_text_material particles pet_stats quest_headers quest_info race_pvp_team race_sound ribbons server_messages sheathe skill_lines sound_entries sound_provider sound_water spell_focus spell_mechanic spell_visual spells stable_slot_prices stationery talents taxi taxi_nodes taxi_path terrain text_filter_lists tga transport_period transports unit_blood value_track vocal_ui_sounds wdl weapon_impact weapon_swing wmo_area world_map_area world_map_continent world_map_overlay world_state_ui zone_map 
+- **benilla-formats** (lib.rs): anim_data area_poi area_sound area_table area_trigger auction_house bank_bag_slot_prices camera_shakes cfg_categories chain characters chat_channels chr_classes cinematics creature_families creature_sound creature_types creatures dbc death_thud durability elevators emit_timing emote_text emotes environmental_damage exhaustion factions footsteps game_tips gameobjects garble gm_ticket_category ground_effects install item_random_properties item_sounds item_visuals itembagfamily itemclass items itemsets itemsubclass languages light liquid loading_screen lock lock_type macro_icons maps material minimap_translate models npc_greeting page_text_material particles pet_stats quest_headers quest_info race_pvp_team race_sound ribbons server_messages sheathe skill_lines sound_entries sound_provider sound_water spell_focus spell_mechanic spell_visual spells stable_slot_prices stationery talents taxi taxi_nodes taxi_path terrain text_filter_lists tga transport_period transports unit_blood value_track vocal_ui_sounds wdl weapon_impact weapon_swing wmo_area world_map_area world_map_continent world_map_overlay world_state_ui wow_ini zone_map 
 - **benilla-m2** (lib.rs): error model skin tests track 
 - **benilla-mpq** (lib.rs): crypto 
 - **benilla-protocol** (lib.rs): auth events guid messages wire world