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/Properties/AssemblyInfo.cs

@@ -0,0 +1,19 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+[assembly: AssemblyTitle("HomuraHimeAudioMod")]
+[assembly: AssemblyDescription("Audio improvements mod for HomuraHime")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("HomuraHimeAudioMod")]
+[assembly: AssemblyCopyright("Copyright © 2026")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+[assembly: ComVisible(false)]
+
+[assembly: Guid("xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx")]
+
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]