chore(renderer): extract AnimationController and remove audio pass-throughs

Extract ~1,500 lines of character animation state from Renderer into a dedicated
AnimationController class, and complete the AudioCoordinator migration by removing
all 10 audio pass-through getters from Renderer.

AnimationController:
- New: include/rendering/animation_controller.hpp (182 lines)
- New: src/rendering/animation_controller.cpp (1,703 lines)
- Moves: locomotion state machine (50+ members), mount animation (40+ members),
  emote system, footstep triggering, surface detection, melee combat animations
- Renderer holds std::unique_ptr<AnimationController> and delegates completely
- AnimationController accesses audio via renderer_->getAudioCoordinator()

Audio caller migration:
- Migrate ~60 external callers from renderer->getXManager() to AudioCoordinator
  directly, grouped by access pattern:
  - UIServices: settings_panel, game_screen, toast_manager, chat_panel,
    combat_ui, window_manager
  - GameServices: game_handler, spell_handler, inventory_handler, quest_handler,
    social_handler, combat_handler
  - Application singleton: application.cpp, auth_screen.cpp, lua_engine.cpp
- Remove 10 pass-through getter definitions from renderer.cpp
- Remove 10 pass-through getter declarations from renderer.hpp
- Remove individual audio manager forward declarations from renderer.hpp
- Redirect 69 internal renderer.cpp audio calls to audioCoordinator_ directly
- game_handler.cpp: withSoundManager template uses services_.audioCoordinator;
  MFP changed from &Renderer::getUiSoundManager to &AudioCoordinator::getUiSoundManager
- GameServices struct: add AudioCoordinator* audioCoordinator member
- settings_panel: applyAudioVolumes(Renderer*) -> applyAudioVolumes(AudioCoordinator*)

src/core/application.cpp

@@ -152,6 +152,7 @@ bool Application::initialize() {
 
     // Populate game services — all subsystems now available
     gameServices_.renderer = renderer.get();
+    gameServices_.audioCoordinator = audioCoordinator_.get();
     gameServices_.assetManager = assetManager.get();
     gameServices_.expansionRegistry = expansionRegistry_.get();
 
@@ -1091,7 +1092,7 @@ void Application::logoutToLogin() {
         }
         renderer->clearMount();
         renderer->setCharacterFollow(0);
-        if (auto* music = renderer->getMusicManager()) {
+        if (auto* music = audioCoordinator_ ? audioCoordinator_->getMusicManager() : nullptr) {
             music->stopMusic(0.0f);
         }
     }
@@ -2828,7 +2829,7 @@ void Application::setupUICallbacks() {
     // Resolves soundId → SoundEntries.dbc → MPQ path → MusicManager.
     gameHandler->setPlayMusicCallback([this](uint32_t soundId) {
         if (!assetManager || !renderer) return;
-        auto* music = renderer->getMusicManager();
+        auto* music = audioCoordinator_ ? audioCoordinator_->getMusicManager() : nullptr;
         if (!music) return;
 
         auto dbc = assetManager->loadDBC("SoundEntries.dbc");
@@ -3418,7 +3419,7 @@ void Application::setupUICallbacks() {
 
     // NPC greeting callback - play voice line
     gameHandler->setNpcGreetingCallback([this](uint64_t guid, const glm::vec3& position) {
-        if (renderer && renderer->getNpcVoiceManager()) {
+        if (audioCoordinator_ && audioCoordinator_->getNpcVoiceManager()) {
             // Convert canonical to render coords for 3D audio
             glm::vec3 renderPos = core::coords::canonicalToRender(position);
 
@@ -3431,13 +3432,13 @@ void Application::setupUICallbacks() {
                 voiceType = entitySpawner_->detectVoiceTypeFromDisplayId(displayId);
             }
 
-            renderer->getNpcVoiceManager()->playGreeting(guid, voiceType, renderPos);
+            audioCoordinator_->getNpcVoiceManager()->playGreeting(guid, voiceType, renderPos);
         }
     });
 
     // NPC farewell callback - play farewell voice line
     gameHandler->setNpcFarewellCallback([this](uint64_t guid, const glm::vec3& position) {
-        if (renderer && renderer->getNpcVoiceManager()) {
+        if (audioCoordinator_ && audioCoordinator_->getNpcVoiceManager()) {
             glm::vec3 renderPos = core::coords::canonicalToRender(position);
 
             audio::VoiceType voiceType = audio::VoiceType::GENERIC;
@@ -3448,13 +3449,13 @@ void Application::setupUICallbacks() {
                 voiceType = entitySpawner_->detectVoiceTypeFromDisplayId(displayId);
             }
 
-            renderer->getNpcVoiceManager()->playFarewell(guid, voiceType, renderPos);
+            audioCoordinator_->getNpcVoiceManager()->playFarewell(guid, voiceType, renderPos);
         }
     });
 
     // NPC vendor callback - play vendor voice line
     gameHandler->setNpcVendorCallback([this](uint64_t guid, const glm::vec3& position) {
-        if (renderer && renderer->getNpcVoiceManager()) {
+        if (audioCoordinator_ && audioCoordinator_->getNpcVoiceManager()) {
             glm::vec3 renderPos = core::coords::canonicalToRender(position);
 
             audio::VoiceType voiceType = audio::VoiceType::GENERIC;
@@ -3465,13 +3466,13 @@ void Application::setupUICallbacks() {
                 voiceType = entitySpawner_->detectVoiceTypeFromDisplayId(displayId);
             }
 
-            renderer->getNpcVoiceManager()->playVendor(guid, voiceType, renderPos);
+            audioCoordinator_->getNpcVoiceManager()->playVendor(guid, voiceType, renderPos);
         }
     });
 
     // NPC aggro callback - play combat start voice line
     gameHandler->setNpcAggroCallback([this](uint64_t guid, const glm::vec3& position) {
-        if (renderer && renderer->getNpcVoiceManager()) {
+        if (audioCoordinator_ && audioCoordinator_->getNpcVoiceManager()) {
             glm::vec3 renderPos = core::coords::canonicalToRender(position);
 
             audio::VoiceType voiceType = audio::VoiceType::GENERIC;
@@ -3482,7 +3483,7 @@ void Application::setupUICallbacks() {
                 voiceType = entitySpawner_->detectVoiceTypeFromDisplayId(displayId);
             }
 
-            renderer->getNpcVoiceManager()->playAggro(guid, voiceType, renderPos);
+            audioCoordinator_->getNpcVoiceManager()->playAggro(guid, voiceType, renderPos);
         }
     });
 
@@ -3718,7 +3719,7 @@ void Application::spawnPlayerCharacter() {
         playerCharacterSpawned = true;
 
         // Set voice profile to match character race/gender
-        if (auto* asm_ = renderer->getActivitySoundManager()) {
+        if (auto* asm_ = audioCoordinator_ ? audioCoordinator_->getActivitySoundManager() : nullptr) {
             const char* raceFolder = "Human";
             const char* raceBase = "Human";
             switch (playerRace_) {