v0.preview.29

v0.preview.29 - 2026-05-28

• Add Claude Opus 4.7/4.8 and GPT-5.5-pro to the model catalog
• Drop the retired Gemini 3.1 Flash Lite preview model
• Add user model overrides to customize built-in model specs
• Handle malformed user model config entries leniently
• Use explicit OPENAI_COMPATIBLE_API_KEY for OpenAI-compatible providers
• Fix persisting of empty sessions
• Fix status bar truncation and clipping of overflowing hyperlinks
• Dependency updates