113dea8: Bump all dependencies. The AI SDK moves to the v4 provider spec: @ai-sdk/anthropic, @ai-sdk/google, @ai-sdk/groq, @ai-sdk/mistral, @ai-sdk/openai and @ai-sdk/xai to ^4, @ai-sdk/togetherai to ^3, and the ai core to ^7 (required so the core recognises the new LanguageModelV4/EmbeddingModelV4/ImageModelV4 specification). Peer ranges are unchanged, so existing installs keep working. All remaining dev and tooling dependencies (TypeScript, @types/node, pg/@electric-sql/pglite, oxlint/ultracite, Turborepo, Remotion) are also brought up to date.