Add project: WriterAgent

[KeithCu]

Add WriterAgent project entry to projects.yaml.

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Summary by cubic

Added the WriterAgent project to projects.yaml so it appears in the catalog. Set github_id to KeithCu/writeragent, category to text, and added a description.

^{Written for commit 8f1a6df. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 1 file

_{Re-trigger cubic}

[KeithCu]

Hello!

I've been working (with others) on WriterAgent, a GPL, local-first LibreOffice extension. It integrates:

• Agentic AI: Local (Ollama/LM Studio) or cloud LLM chat with multi-step tool execution.
• Python / NumPy Integration: Run =PY() formulas and custom Python analytics directly in Calc cells and Writer documents.
• Multi-modal Tools: Offline local OCR (Docling/RapidOCR), image generation, and talk to your document.
• Real-time grammar check.

It doesn't have many stars yet but I'm trying to get the LibrePy portion into LibreOffice as an official extension. There's interest from the team, however I want to get more feedback first.

Thanks for considering.