feat: add MCPB bundle and fix npm package distribution

Two distribution methods now available:

1. npm (for Claude Code / developers):
   npm install -g vestige-mcp-server
   claude mcp add vestige vestige-mcp -s user

2. MCPB (for Claude Desktop / one-click install):
   Download vestige-1.1.0.mcpb from releases, double-click

Changes:
- Renamed npm package to vestige-mcp-server (vestige-mcp was taken)
- Fixed postinstall to download binaries from GitHub releases
- Added vestige-mcpb package with manifest and build script
- Uploaded .mcpb bundle to v1.1.0 release

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

packages/vestige-mcpb/build.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+set -e
+
+VERSION="${1:-1.1.0}"
+REPO="samvallad33/vestige"
+
+echo "Building Vestige MCPB v${VERSION}..."
+
+# Create server directory
+mkdir -p server
+
+# Download macOS ARM64
+echo "Downloading macOS ARM64 binary..."
+curl -sL "https://github.com/${REPO}/releases/download/v${VERSION}/vestige-mcp-aarch64-apple-darwin.tar.gz" | tar -xz -C server
+mv server/vestige-mcp server/vestige-mcp-darwin-arm64
+mv server/vestige server/vestige-darwin-arm64
+
+# Download Linux x64
+echo "Downloading Linux x64 binary..."
+curl -sL "https://github.com/${REPO}/releases/download/v${VERSION}/vestige-mcp-x86_64-unknown-linux-gnu.tar.gz" | tar -xz -C server
+mv server/vestige-mcp server/vestige-mcp-linux-x64
+mv server/vestige server/vestige-linux-x64
+
+# Download Windows x64
+echo "Downloading Windows x64 binary..."
+curl -sL "https://github.com/${REPO}/releases/download/v${VERSION}/vestige-mcp-x86_64-pc-windows-msvc.zip" -o /tmp/win.zip
+unzip -q /tmp/win.zip -d server
+mv server/vestige-mcp.exe server/vestige-mcp-win32-x64.exe
+mv server/vestige.exe server/vestige-win32-x64.exe
+rm /tmp/win.zip
+
+# Make executable
+chmod +x server/*
+
+echo "Binaries downloaded. Run 'mcpb pack' to create bundle."