spell bind: BindTarget's unit gates run ahead of the relation arms at the press, the click and the hover, through one creature-type resolver (#640)

The spell target binder went straight to the relation checks and tested none of `BindTarget`'s unit gates. So:
- a heal with a dead friendly player selected was sent at the corpse and refused by the server;
- Hibernate, Banish or Turn Undead at the wrong creature type was sent and refused, instead of refusing locally with "Invalid target";
- a self-excluding spell with yourself selected bound you.

`BindTarget 0x6e5b40` refuses a unit silently, before any relation arm, when any of these holds:
- the unit is the caster and the spell has `AttributesEx & 0x80000` (`6e5bd8`-`6e5bf7`);
- the unit has `UNIT_FIELD_FLAGS & 0x10000` (`6e5c1d`);
- the spell's `TargetCreatureType` mask excludes the unit's type (`6e5c26`-`6e5c53`). A zero mask admits every unit. Otherwise a unit of type 0 is refused and a typed one needs bit `type - 1`;
- the unit is dead (signed `UNIT_FIELD_HEALTH` not above 0), unless `UNIT_DYNAMIC_FLAGS & 0x20`, a word in `0x8600` or `AttributesEx2 & 1` admits it (`6e5c5f`-`6e5c8b`);
- the unit is alive and the word has `0x400` (`6e5ca2`).

A refused selection falls to the player behind `autoSelfCast`, then to the enemy-word refusal or the cursor. `SpellCanTargetUnit 0x6e6460` runs the same five gates (`6e6507`-`6e65ab`).

- `spell/bind_gates.rs` holds the five gates. `cast_target::unit_binds` is the one predicate for the selection, the `autoSelfCast` fallback, the cursor's click, `SpellTargetUnit` and the hover verdict. The cursor's separate `excludes_caster` checks fold into it.
- The dead test now matches the reference, which catches a corpse whose create block sent no health. The `0x400` bit is now cleared by a dead unit's bind (`6e5d89`, `6e5ddb`), where before any non-self candidate cleared it.
- `creature_type.rs` is the one `0x605570`, reading these in order:
  - the form's `SpellShapeshiftForm` creature type;
  - the creature template's type, by `OBJECT_FIELD_ENTRY`;
  - `ChrRaces`'s type.
  The minimap's tracking dots used their own copy, keyed by the guid's entry bits and missing the fall-through past the form. They now call the shared resolver.
- `SpellDisplay` reads `TargetCreatureType` (column 14).

Tests:
- `bind_gates.rs` has a truth table per gate. Its `ladder` module drives `resolve_cast_target` through:
  - a dead heal target, with `autoSelfCast` on and off;
  - Hibernate at the wrong type;
  - a self-excluding spell;
  - the `0x10000` flag;
  - the `0x402` word.
- `the_press_the_click_and_the_hover_bind_the_same_units` runs one table through all three paths.
- `real_spell_catalog_reads_the_bind_gate_columns` pins the real rows for Hibernate, Banish, Turn Undead, Mind Control, Bloodlust and Revive.

Fixes #449

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

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

docs/MAP.md

@@ -102,9 +102,9 @@
 ## Modules (top-level, per crate)
 
 - **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 script_calls 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_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-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 creature_type 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 script_calls 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_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 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 packages 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-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 packages page_text_material particles pet_stats quest_headers quest_info race_creature_type 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