feat: make agent-research-aggregator optional with auto-detection

chore: remove Google site verification HTML file

feat: add Google site verification file for domain ownership

feat: agent-research-aggregator skill for AI research automation

Rename project in README

PaperBanana: accept OpenRouter or Google key, not just Gemini

Simplify PaperBanana integration; add citation

Add optional PaperBanana backbone for the plotting-agent

Add optional Semantic Scholar API key integration

Enhance README with image and skills explanation

Enhance README with performance metrics and repo details

Refactor README for clarity and formatting

Fix pipeline bottlenecks identified from end-to-end CitationRL run

Include humorous note in README

Add paper preview thumbnail to README