v16.4.0-canary.45

Summary

Misc Changes [test] Fix new deploy suites: #99162 Provide only the relevant context for agent upgrade: #99189 Turbopack: Add support for additionalRoots to deployment adapters: #99015 Use Sonnet 5 with 1M context for AI upgrade handoff: #99183 docs: font per-call preload scope and the declarations font-family override: #99167 Credits Huge thanks to @eps1lon , @devjiwonchoi , @bgw , and @icyJoseph for helping!

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