feat: Automated Audio System & Royalty-Free Asset Integration (Phase 8 & 9)

- Added footstep_grass.wav, wood_chop.wav, forest_ambient.mp3
- Synchronized rhythm footsteps with walk animation frames
- Implemented proximity-based pond music modulation
- Updated SoundManager to prioritize high-quality assets

src/scenes/GameScene.js

@@ -809,6 +809,7 @@ class GameScene extends Phaser.Scene {
             console.log('🎵 Initializing Sound Manager...');
             this.soundManager = new SoundManager(this);
             this.soundManager.startMusic();
+            this.soundManager.playForestAmbient(); // 🌲 PHASE 9: Start background ambience
 
             // Initialize Parallax System
             console.log('🌄 Initializing Parallax System...');
@@ -1987,7 +1988,26 @@ class GameScene extends Phaser.Scene {
             }
         }
 
-        // Parallax Logic
+        // 🎵 PHASE 8: Pond Proximity Audio Modulation
+        if (this.player && this.lakeSystem && this.soundManager) {
+            const playerPos = this.player.getPosition();
+            let minPondDist = 1000;
+
+            // Find nearest pond
+            this.lakeSystem.lakes.forEach(lake => {
+                if (lake.type === 'pond' || lake.type === 'lake') {
+                    const d = Phaser.Math.Distance.Between(playerPos.x, playerPos.y, lake.x, lake.y);
+                    if (d < minPondDist) minPondDist = d;
+                }
+            });
+
+            // Map distance to modulation factor (e.g., 0 within 5 tiles, 1 far away)
+            // Or 1 at pond center, 0 far away? User said "malo spremeni, ko sem blizu"
+            // Let's go with 1.0 (max change) at dist=0, and 0.0 (no change) beyond 15 tiles
+            const modFactor = Phaser.Math.Clamp(1 - (minPondDist / 15), 0, 1);
+            this.soundManager.setAmbientModulation(modFactor);
+        }
+
         if (this.parallaxSystem && this.player) {
             const playerPos = this.player.getPosition();
             // 🎨 FLAT 2D (NEW!) - Direct position, no conversion