v0.5.2

What's new

• fix(fcpxml): flat asset-clips, per-app value encoding, crop/position calibration (#254)
• Limit transcription audio extraction concurrency (#253)
• Incentivize login with free credits in agent chat panel (#248)
• fix(mcp): stateful sessions so clients refresh tools after updates (#250)
• free tier models (#249)
• Add v0.5.1 to appcast