v2.9.0

This release promotes the Langsearch integration and the Pydantic AI capabilities migration to production, while significantly improving pipeline resilience against API instability and enhancing data hygiene.

New Features:

• Promoted Langsearch Integration: Langsearch is now fully supported as a production-ready web search provider for lyrics and scene detection.
• Updated Default AI Models: Default models have been updated to the latest Gemini versions: gemini-3.5-flash for subtitles and gemini-3.1-flash-lite for lyrics research.

Fixes & Improvements:

• Improved Pipeline Resilience: Increased default retry limits (run increased to 5, max to 15) to allow the pipeline more attempts to recover from transient "server unavailable" responses frequently encountered with the Gemini API.
• Enhanced Data Hygiene: Updated the subtitle stitching logic to explicitly exclude web search API keys from the metadata header embedded in final SRT files, ensuring cleaner output.
• Pydantic AI Compatibility: Finalized the transition of the agent architecture to the new capabilities API, ensuring long-term compatibility with the pydantic-ai ecosystem.
• Dependency Management: Updated minimum requirements for pydantic-ai-slim to >= 1.99.0 to support the updated agent initialization logic.

What's Changed

• Langsearch by @FlippFuzz in #8

Full Changelog: v2.8.2...v2.9.0