Clean up web changes and add favicon

- Update uv.lock dependencies
- Remove web/CLAUDE.md (moved to root)
- Update base.html template
- Add favicon.svg

Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com>

web/src/beanflows/static/favicon.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
+  <ellipse cx="16" cy="16" rx="11" ry="14" fill="#B45309"/>
+  <path d="M16 4 C14 10, 14 22, 16 28" stroke="#FFFBF5" stroke-width="1.5" fill="none" stroke-linecap="round"/>
+</svg>

web/src/beanflows/templates/base.html

@@ -4,6 +4,7 @@
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>{% block title %}{{ config.APP_NAME }}{% endblock %}</title>
+  <link rel="icon" href="{{ url_for('static', filename='favicon.svg') }}" type="image/svg+xml">
 
   <!-- Fonts -->
   <link rel="preconnect" href="https://fonts.googleapis.com">