Phase 1: Setup project structure and tool installation guide

- Created project directory structure
- Added docs/SETUP_PHASE1.md with tool installation instructions
- Added docs/AUDIO_ANALYSIS.md with game audio architecture
- Added src/HomuraHimeAudioMod/ BepInEx plugin skeleton
- Added patch stubs for VoiceManager, AudioDucking, EnemyAudio
- Configured .gitignore for build artifacts and game files
- Initialized beads issue tracker

src/HomuraHimeAudioMod/Patches/VoiceManagerPatch.cs

@@ -0,0 +1,19 @@
+using HarmonyLib;
+
+namespace HomuraHimeAudioMod.Patches
+{
+    /// <summary>
+    /// Patches for voice limit and voice manager improvements.
+    /// TO BE IMPLEMENTED AFTER PHASE 2 CODE ANALYSIS
+    /// </summary>
+    public class VoiceManagerPatch
+    {
+        public static void Apply(ref Harmony harmony)
+        {
+            // TODO: After Phase 2, implement patches for:
+            // - Increase max voice count
+            // - Improve voice stealing behavior
+            // - Adjust pooling sizes
+        }
+    }
+}