The week proof became the bottleneck

The Claude Code team now sends every pull request through parallel AI reviewers and sets human review by risk tier. Meta's Forum team reached feature parity in eight weeks with agents running the build and test loop and engineers approving evidence.

The costs showed too: PostgreSQL 19 slipped after AI review found more defects than its developers could fix, and a paired experiment showed a harness rescued a cheap model while only slowing an expensive one.

Epic moved teams to AI-first production and said the gains would reach everyone on Unreal. Its new launcher was vibe coded, and it is rebuilding Easy Anti-Cheat for Linux with Fortnite as the pilot.

A team of agents decompiled a shipped shooter, rebuilding 99% of its functions with 83% byte-exact, kept honest by a verifier they could not edit. Later in the week decomp.dev closed its public index, citing AI-finished projects.

Meta released Muse Spark Open, about 816B parameters with 42B active per token, which runs at 2 bits on a 512 GB Mac. DeepSeek followed with V4.1 Flash 1017 under MIT, with its largest vendor-reported gains on agent benchmarks.

Unity 7's alpha runs on CoreCLR instead of Mono, though Unity says faster iteration is a longer-term goal. RimWorld left Unity for its own engine and reports 2 to 4 times better speed. Godot 4.8 reached beta with a long rendering list.

npm's Trusted Publishing was shown to trust a package name rather than its repo, Chainguard put coding agents in throwaway machines with signed results, and OpenCode said provider keys saved in its console may have leaked.