feat: add SVG post-processor to package exports

Add svg-crop-processor.js to published package files to make the comprehensive
SVG post-processing functionality available to external consumers.

The processor provides:
- Crop mark detection and viewBox optimization (60-80% size reduction)
- Interactive bead annotation extraction (bead:// links to data attributes)
- Automatic width/height adjustment for proper aspect ratios
- Browser and Node.js compatibility with zero dependencies

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

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

packages/templates/package.json

@@ -8,6 +8,7 @@
     "*.typ",
     "index.js",
     "index.d.ts",
+    "svg-crop-processor.js",
     "__init__.py",
     "pyproject.toml",
     "README.md"