Add dedicated snort and whinny idle sounds with longer intervals

Created specific idle sound pool using only horse snorts and whinnies.
Re-enabled idle sounds with much longer interval (20-40 seconds).

Changes:
- Added horseIdleSounds_ pool: mHorseStand3A (snort) + mHorseAggroA (whinny)
- Updated playIdleSound() to use dedicated pool instead of mixed breath sounds
- Increased idle sound interval from 8-15s to 20-40s (less frequent)
- Removed flying mount idle sounds (too aggressive)
- Increased volume slightly (0.35x) for better audibility

include/audio/mount_sound_manager.hpp

@@ -84,6 +84,7 @@ private:
     std::vector<MountSample> horseMoveSounds_;
     std::vector<MountSample> horseJumpSounds_;   // Jump effort sounds
     std::vector<MountSample> horseLandSounds_;   // Landing thud sounds
+    std::vector<MountSample> horseIdleSounds_;   // Snorts and whinnies for idle
 
     // Sound state tracking
     bool playingMovementSound_ = false;

src/audio/mount_sound_manager.cpp

@@ -128,6 +128,19 @@ void MountSoundManager::loadMountSounds() {
         }
     }
 
+    // Ground mount idle ambient (snorts and whinnies only)
+    std::vector<std::string> horseIdlePaths = {
+        "Sound\\Creature\\Horse\\mHorseStand3A.wav",  // Snort
+        "Sound\\Creature\\Horse\\mHorseAggroA.wav",   // Whinny
+    };
+
+    for (const auto& path : horseIdlePaths) {
+        MountSample sample;
+        if (loadSound(path, sample)) {
+            horseIdleSounds_.push_back(std::move(sample));
+        }
+    }
+
     if (!wingFlapSounds_.empty()) {
         LOG_INFO("Loaded ", wingFlapSounds_.size(), " wing flap sounds");
     }
@@ -146,6 +159,9 @@ void MountSoundManager::loadMountSounds() {
     if (!horseLandSounds_.empty()) {
         LOG_INFO("Loaded ", horseLandSounds_.size(), " horse land sounds");
     }
+    if (!horseIdleSounds_.empty()) {
+        LOG_INFO("Loaded ", horseIdleSounds_.size(), " horse idle sounds (snorts/whinnies)");
+    }
 }
 
 bool MountSoundManager::loadSound(const std::string& path, MountSample& sample) {
@@ -305,22 +321,16 @@ void MountSoundManager::playLandSound() {
 void MountSoundManager::playIdleSound() {
     if (!mounted_ || moving_) return;
 
-    // Ambient idle sounds (snort, breath, soft neigh)
-    if (currentMountType_ == MountType::GROUND && !horseBreathSounds_.empty()) {
+    // Ambient idle sounds (snorts and whinnies only for ground mounts)
+    if (currentMountType_ == MountType::GROUND && !horseIdleSounds_.empty()) {
         static std::mt19937 rng(std::random_device{}());
-        std::uniform_int_distribution<size_t> dist(0, horseBreathSounds_.size() - 1);
-        const auto& sample = horseBreathSounds_[dist(rng)];
+        std::uniform_int_distribution<size_t> dist(0, horseIdleSounds_.size() - 1);
+        const auto& sample = horseIdleSounds_[dist(rng)];
         if (!sample.data.empty()) {
-            AudioEngine::instance().playSound2D(sample.data, 0.3f * volumeScale_, 0.95f);
-        }
-    } else if (currentMountType_ == MountType::FLYING && !wingIdleSounds_.empty()) {
-        static std::mt19937 rng(std::random_device{}());
-        std::uniform_int_distribution<size_t> dist(0, wingIdleSounds_.size() - 1);
-        const auto& sample = wingIdleSounds_[dist(rng)];
-        if (!sample.data.empty()) {
-            AudioEngine::instance().playSound2D(sample.data, 0.25f * volumeScale_, 1.0f);
+            AudioEngine::instance().playSound2D(sample.data, 0.35f * volumeScale_, 0.95f);
         }
     }
+    // No idle sounds for flying mounts (wing sounds were too aggressive)
 }
 
 MountType MountSoundManager::detectMountType(uint32_t creatureDisplayId) const {

src/rendering/renderer.cpp

@@ -1102,19 +1102,19 @@ void Renderer::updateCharacterAnimation() {
                 mountActiveFidget_ = 0;  // Cancel any active fidget
             }
 
-            // Idle ambient sounds: DISABLED for now (too frequent/annoying)
-            // if (!moving && mountSoundManager) {
-            //     mountIdleSoundTimer_ += lastDeltaTime_;
-            //     static float nextIdleSoundTime = 8.0f + (rand() % 8);  // 8-15 seconds
-            //
-            //     if (mountIdleSoundTimer_ >= nextIdleSoundTime) {
-            //         mountSoundManager->playIdleSound();
-            //         mountIdleSoundTimer_ = 0.0f;
-            //         nextIdleSoundTime = 8.0f + (rand() % 8);  // Randomize next sound time
-            //     }
-            // } else if (moving) {
-            //     mountIdleSoundTimer_ = 0.0f;  // Reset timer when moving
-            // }
+            // Idle ambient sounds: snorts and whinnies only, less frequent
+            if (!moving && mountSoundManager) {
+                mountIdleSoundTimer_ += lastDeltaTime_;
+                static float nextIdleSoundTime = 20.0f + (rand() % 21);  // 20-40 seconds
+
+                if (mountIdleSoundTimer_ >= nextIdleSoundTime) {
+                    mountSoundManager->playIdleSound();
+                    mountIdleSoundTimer_ = 0.0f;
+                    nextIdleSoundTime = 20.0f + (rand() % 21);  // Randomize next sound time
+                }
+            } else if (moving) {
+                mountIdleSoundTimer_ = 0.0f;  // Reset timer when moving
+            }
 
             // Only update animation if it changed and we're not in an action sequence or playing a fidget
             if (mountAction_ == MountAction::None && mountActiveFidget_ == 0 && (!haveMountState || curMountAnim != mountAnimId)) {