Development notes and personal essays by Danny (CYH), on building products, working with AI, and observations along the way.https://hcytlog.com/enhttps://hcytlog.com/en/agent-change-gate-fingerprint-en/https://hcytlog.com/en/agent-change-gate-fingerprint-en/I spent a week building a tool that measures agent prompt changes, then found out it had been measuring nothing. Subagents inherit no instructions at all, and a fingerprint token in the spec is what proved it.Sun, 30 Aug 2026 00:00:00 GMThttps://hcytlog.com/en/tariff-reclassification-line-en/https://hcytlog.com/en/tariff-reclassification-line-en/I built a tariff reclassification agent without access to duty rates. The frozen August evaluation reached 88.9% at eight digits on its DEAD_CODE stratum; this update separates that result from the six-digit baseline and the production triage path.Sun, 30 Aug 2026 00:00:00 GMThttps://hcytlog.com/en/contributing-to-gitlab-orbit-en/https://hcytlog.com/en/contributing-to-gitlab-orbit-en/My first GitLab Orbit contributions in June 2026: two days, 20 commits, and 4 MRs. The October 8 update covers glab 1.117 commands, local SQL, Local MCP, and Remote query boundaries.Wed, 17 Jun 2026 00:00:00 GMThttps://hcytlog.com/en/gitlab-duo-cli-advanced-patterns-en/https://hcytlog.com/en/gitlab-duo-cli-advanced-patterns-en/My June 2026 Duo CLI batch review workflow, updated October 8 with model identifiers, headless auto-approval, Credits billing, retryable completion markers, and timeout scripts.Mon, 15 Jun 2026 00:00:00 GMThttps://hcytlog.com/en/gitlab-duo-cli-getting-started-en/https://hcytlog.com/en/gitlab-duo-cli-getting-started-en/My June 2026 Duo CLI review workflow, with an October 8 update covering versions, namespace access, model identifiers, Credits billing, and headless tool approvals.Fri, 12 Jun 2026 00:00:00 GMThttps://hcytlog.com/en/why-we-still-keep-building-termdock/https://hcytlog.com/en/why-we-still-keep-building-termdock/Eight months in, many features that once felt fresh in Termdock are now showing up in bigger CLI tools. That does not change the reason we keep building it. The point was never to survive on feature novelty alone. The point was to make heavy CLI work across multiple projects feel less fragmented.Thu, 02 Apr 2026 00:00:00 GMT