The AI Counsel v0.9.1

Added

• Ruff dev tooling: Added Ruff to the Python dev dependency group so lint checks run through uv run ruff.

Fixed

• Conversation title repair: New and existing conversations with default/empty titles now derive a readable title from the first user message without overwriting explicit custom titles.
• Preflight rate-limit resilience: Transient rate-limit preflight failures are retried and soft-failed so otherwise valid models are not dropped from a council run.
• Plain 503 preflight handling: A bare 503 Service Unavailable remains a hard preflight failure unless the response body indicates rate limiting, quota, throttling, temporary congestion, or a similar transient condition.