MkDocs MCP Search Server

# MkDocs MCP Refactoring Plan ## Overview This plan outlines the changes needed to refactor the codebase from the Powertools-specific implementation to a generic MkDocs implementation, removing the runtime concept entirely. ## Key Changes 1. **SearchIndexFactory Class** - Remove all runtime parameters from methods - Update URL construction to use only baseUrl and version - Modify caching mechanism to use only version as key - Update version resolution to work with generic MkDocs sites 2. **Index File** - Update `getSearchIndexUrl` function to remove runtime parameter - Update `fetchSearchIndex` function to remove runtime parameter - Update `fetchAvailableVersions` function to work with generic MkDocs sites 3. **Tests** - Update all test cases to remove runtime references - Modify mocks to reflect the new structure without runtimes - Update test descriptions to reflect the new functionality - Ensure all tests pass with the refactored code 4. **Main Server File** - Update tool descriptions to reflect generic MkDocs functionality - Update URL construction in search results to use only baseUrl and version - Update error handling for version resolution ## Implementation Steps 1. First, refactor the `searchIndex.ts` file to remove runtime parameters 2. Update the tests in `searchIndex.spec.ts` to match the new implementation 3. Update the main server file (`index.ts`) to use the refactored code 4. Run tests to ensure everything works correctly 5. Update documentation to reflect the changes