feat: Add GitHub Actions workflow for NuGet trusted publishing and CLAUDE.md

Add CI/CD pipeline that builds on push/PR and publishes to NuGet on version
tags using OIDC-based trusted publishing (no long-lived API keys required).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: LordLuceus

.github/workflows/publish.yml

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+name: Build and Publish
+
+on:
+  push:
+    branches: [master]
+    tags: ['v*']
+  pull_request:
+    branches: [master]
+
+jobs:
+  build:
+    runs-on: windows-latest
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v5
+        with:
+          dotnet-version: 8.0.x
+
+      - name: Restore dependencies
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --configuration Release --no-restore
+
+      - name: Pack
+        run: dotnet pack --configuration Release --no-build --output ./artifacts
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: nuget-packages
+          path: ./artifacts/*.nupkg
+
+      - name: NuGet login (OIDC)
+        if: startsWith(github.ref, 'refs/tags/v')
+        uses: NuGet/login@v1
+        id: nuget-login
+        with:
+          user: ${{ secrets.NUGET_USER }}
+
+      - name: Push to NuGet
+        if: startsWith(github.ref, 'refs/tags/v')
+        shell: pwsh
+        run: |
+          Get-ChildItem ./artifacts -Filter *.nupkg | ForEach-Object {
+            dotnet nuget push $_.FullName `
+              --api-key "${{ steps.nuget-login.outputs.NUGET_API_KEY }}" `
+              --source https://api.nuget.org/v3/index.json `
+              --skip-duplicate
+          }

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+MelonAccessibilityLib is a C# library that adds screen reader accessibility to Unity games via MelonLoader mods. It provides speech management, text cleaning utilities, and P/Invoke wrappers for UniversalSpeech with SAPI fallback.
+
+## Build Commands
+
+```bash
+# Build all target frameworks (net6.0, net472, net35)
+dotnet build
+
+# Build specific framework
+dotnet build -f net6.0
+dotnet build -f net472
+dotnet build -f net35
+
+# Release build
+dotnet build -c Release
+
+# Create NuGet package
+dotnet pack -c Release
+```
+
+Build outputs are located at `bin/{Debug|Release}/{net6.0|net472|net35}/MelonAccessibilityLib.dll`.
+
+## Testing
+
+No test framework is currently configured. If adding tests, use standard `dotnet test` commands.
+
+## Architecture
+
+### Component Overview
+
+- **SpeechManager** (`SpeechManager.cs`): High-level static API for speech output with duplicate prevention, repeat functionality, and text formatting
+- **UniversalSpeechWrapper** (`UniversalSpeechWrapper.cs`): Low-level P/Invoke wrapper for UniversalSpeech.dll with SAPI fallback
+- **TextCleaner** (`TextCleaner.cs`): Removes Unity rich text tags and normalizes text for screen reader output
+- **AccessibilityLog/IAccessibilityLogger** (`IAccessibilityLogger.cs`): Logging facade with pluggable logger interface
+- **Net35Extensions** (`Net35Extensions.cs`): Polyfills for .NET 3.5 compatibility (e.g., `IsNullOrWhiteSpace`)
+
+### Data Flow
+
+```
+Consumer (MelonMod)
+    │
+    ├─ Sets AccessibilityLog.Logger
+    ├─ Calls SpeechManager.Initialize()
+    └─ Calls SpeechManager.Output()
+          │
+          ├─ Duplicate suppression (time-based)
+          ├─ TextCleaner.Clean() (strips rich text)
+          └─ UniversalSpeechWrapper.Speak() (P/Invoke)
+```
+
+### Extensibility Points
+
+- **Custom Logger**: Implement `IAccessibilityLogger` interface
+- **Text Formatting**: Set `SpeechManager.FormatTextOverride` delegate
+- **Repeat Logic**: Set `SpeechManager.ShouldStoreForRepeatPredicate` delegate
+- **Custom Text Types**: Use constants starting from `TextType.CustomBase` (100)
+
+## Key Conventions
+
+- All public classes are static (no instance creation)
+- Private fields use `_camelCase` prefix
+- P/Invoke constants use `ALL_CAPS`
+- Single namespace: `MelonAccessibilityLib`
+- Comprehensive XML documentation on all public members
+- Multi-target build: net35 is limited to C# 7.3 features
+
+## Platform Requirements
+
+- Windows only (P/Invoke and SAPI are Windows-specific)
+- UniversalSpeech.dll must be deployed alongside consuming mod
+- Supports screen readers: NVDA, JAWS, Window-Eyes, System Access, Supernova, ZoomText