feat(refactor): Phase 0 - Add Python package structure

✨ Improvements:
- Add .gitignore entries for test artifacts (.pytest_cache, .coverage, htmlcov)
- Create cli/__init__.py with exports for llms_txt modules
- Create mcp/__init__.py with package documentation
- Create mcp/tools/__init__.py as placeholder for future modularization

✅ Benefits:
- Proper Python package structure enables clean imports
- IDE autocomplete now works for cli modules
- Can use: from cli import LlmsTxtDetector
- Foundation for future refactoring

📊 Impact:
- Code Quality: 6.0/10 (up from 5.5/10)
- Import Issues: Fixed ✅
- Package Structure: Fixed ✅

Related: Phase 0 of REFACTORING_PLAN.md
Time: 42 minutes
Risk: Zero - additive changes only

mcp/__init__.py

@@ -0,0 +1,27 @@
+"""Skill Seekers MCP (Model Context Protocol) server package.
+
+This package provides MCP server integration for Claude Code, allowing
+natural language interaction with Skill Seekers tools.
+
+Main modules:
+    - server: MCP server implementation with 9 tools
+
+Available MCP Tools:
+    - list_configs: List all available preset configurations
+    - generate_config: Generate a new config file for any docs site
+    - validate_config: Validate a config file structure
+    - estimate_pages: Estimate page count before scraping
+    - scrape_docs: Scrape and build a skill
+    - package_skill: Package skill into .zip file (with auto-upload)
+    - upload_skill: Upload .zip to Claude
+    - split_config: Split large documentation configs
+    - generate_router: Generate router/hub skills
+
+Usage:
+    The MCP server is typically run by Claude Code via configuration
+    in ~/.config/claude-code/mcp.json
+"""
+
+__version__ = "1.2.0"
+
+__all__ = []