Add test configurations for MCP validation

Add 4 test configuration files used for validating MCP functionality:
- astro.json: Astro framework documentation (15 pages, production test)
- python-tutorial-test.json: Python tutorial (minimal test case)
- tailwind.json: Tailwind CSS documentation (test case)
- test-manual.json: Manual testing configuration

These configs were used to verify:
- Config generation via generate_config tool
- Config validation via validate_config tool
- Page estimation via estimate_pages tool
- Full scraping workflow via scrape_docs tool
- Skill packaging via package_skill tool

All tests passed successfully in production Claude Code environment.

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

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

configs/python-tutorial-test.json

@@ -0,0 +1,17 @@
+{
+  "name": "python-tutorial-test",
+  "description": "Python tutorial for testing MCP tools",
+  "base_url": "https://docs.python.org/3/tutorial/",
+  "selectors": {
+    "main_content": "article",
+    "title": "h1",
+    "code_blocks": "pre code"
+  },
+  "url_patterns": {
+    "include": [],
+    "exclude": []
+  },
+  "categories": {},
+  "rate_limit": 0.3,
+  "max_pages": 10
+}