Add Google Docs, Sheets, and Slides plugins with bundled skills

[JacobSampson]

Adds Google Docs, Google Sheets, and Google Slides plugins under third_party, each pointing at its MCP server on api.cursor.com.

Each plugin bundles a usage skill teaching agents the provider's conventions:

• The Docs index contract and styling
• Sheets A1 versus grid coordinates and dashboard formatting
• Slides geometry and per-slide PNG verification.

---

Note

Low Risk
Additive plugin metadata, docs, and skills only; no changes to core app code or auth implementation in this repository.

Overview
Adds three new Cursor marketplace plugins for Google Docs, Sheets, and Slides, listed in .cursor-plugin/marketplace.json and the root README.md.

Each plugin is a new third_party/google-* package: plugin.json, HTTP mcp.json to https://api.cursor.com/rest-mcp/{service}/mcp, install docs, MIT license, product logo, and a bundled agent skill (SKILL.md) for that API’s editing conventions (Docs index/revision rules, Sheets A1 vs sheetId and dashboard flow, Slides layout/geometry and PNG verification). No application logic ships in-repo—the change is packaging and discoverability for OAuth-backed remote MCP.

^{Reviewed by Cursor Bugbot for commit 3a62118. Bugbot is set up for automated code reviews on this repo. Configure here.}

[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

^{Bugbot Autofix is ON, but it could not run because the branch was deleted or merged before autofix could start.}

^{Reviewed by Cursor Bugbot for commit ea171d6. Configure here.}