v16.4.0-canary.13

Misc Changes

• evals: stop requiring the removed viewTransition flag in agent-043: #98116
• errors: shorten "use cache" messages and unify them into one factory: #94300
• test: add adoption skill evals: #97759
• Upgrade React from 29d9d318-20260826 to ff7445e6-20260831: #98113
• [ci] Simplify upload-preview-tarballs workflow: #98109
• devlow: use commander for cli argument parsing: #93860
• [PPF] Pass in original searchParams for private-cache pages: #98041
• docs: document create-next-app Cache Components prompt and flag: #97798
• lazy server hmr: #96566
• Fix Turbopack HMR recovery after dropped connections: #97966
• test: Improve test cache handler implementations: #98098
• docs: Fix the documented contract for custom cache handlers: #98039
• chore: remove unused code from image optimizer: #98060
• docs: add layout stability guidance for videos and iframes: #98070
• tests: Improve use-cache-cross-deployment tests: #98049

Credits

Huge thanks to @gaojude, @aurorascharff, @eps1lon, @wbinnssmith, @lubieowoce, @icyJoseph, @mischnic, @unstubbable, and @styfle for helping!