A Godot audio callback can start late even when its C++ work is short. Trace admission, queue residence, preparation, and callback onset separately.

I replayed real builder briefs on the Claude 5.5 models. Sonnet lost, Haiku nearly matched Opus at a quarter of the cost, and a sequential test hid the rest.

Rebuilding Bodycam's room-aware gunshot reverb in Godot 4.7 with a ray tracer, a measured reverb, and a physics reference that caught six bugs on the way.

How the installer and release builds of an Electron app went from 45–82 minutes to 12–16 by dropping duplicate tests and splitting packaging per target — and the one file that breaks if you split naively.

How a 34-minute Electron PR pipeline dropped to 5 minutes once we stopped blaming runners and measured the Jest step — sharding, transpile-only ts-jest, and arm64.

A small CLI that turns a YouTube URL into a transcript, falls back to local whisper.cpp when captions are missing, and snapshots frames without downloading the video.

Video analysis was filling the conversation with bookkeeping. A local tool now keeps the raw artifacts on disk and returns compact, inspectable findings.

Game tests kept interrupting my desktop. Separating headless checks from guarded visual captures made the workflow safer and its evidence more reliable.

Walking exposed the gap between accurate foot placement and believable support. A precise solver helped, but cadence and contact tests still rejected the gait.

Aiming, sprinting, crouching, and reloading looked better once I tested the transitions between them and kept the weapon, view, and supporting hands connected.