Simplenote MCP Server

## Description Briefly describe the changes in this pull request. ## Related Issue Fixes #(issue) ## Type of Change Please delete options that are not relevant. - [ ] Bug fix (non-breaking change which fixes an issue) - [ ] New feature (non-breaking change which adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected) - [ ] Documentation update - [ ] Performance improvement ## Testing Please describe the tests that you ran to verify your changes. - [ ] Test A - [ ] Test B ## Checklist - [ ] My code follows the style guidelines of this project - [ ] I have performed a self-review of my own code - [ ] I have commented my code, particularly in hard-to-understand areas - [ ] I have made corresponding changes to the documentation - [ ] My changes generate no new warnings - [ ] Any dependent changes have been merged and published in downstream modules