19 Passing Tests Missed Broken Article Titles Published for Nine Days

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A developer's automated pipeline for crossposting notes to dev.to published nine articles with malformed titles — visible quote characters included — over nine consecutive days in July. The root cause was a simplistic line-splitting parser that lacked YAML quote-stripping logic, causing literal double-quote characters to pass through into live article titles. All 19 automated gate tests remained green throughout, because each test only verified internal pipeline steps like parsing and JSON construction, never the actual rendered output on dev.to. The bug went undetected by any alert or automation and was only discovered when the developer accidentally opened their public profile page on July 11th. The incident illustrates a broader pipeline risk: testing what your code builds is not the same as testing what the external system ultimately displays to end users.

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