Community-curated agent lists

Broader directories: e.g. [brandonhimpfen/awesome-ai-agents](https://github.com/brandonhimpfen/awesome-ai-agents), [axioma-ai-labs/awesome-ai-agent-frameworks](https://github.com/axioma-ai-labs/awesome-ai-agent-frameworks), [mb-mal/awesome-ai-agents-frameworks](https://github.com/mb-mal/awesome-ai-agents-frameworks)—differ by scope and update cadence.