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Your AI coding agent can read 1,000 files and still miss the one that matters.

This story is from 2026-10-21. It is preserved in the archive; the latest stories are on the live feed.

The failure usually isn’t “the agent can’t find the code.” It’s this: The agent finds createSession , changes it, runs the nearest test, and says “done.” It misses the worker that calls refreshSession , the test that asserts cookie flags, and the retry path that assumes the old TTL. The diff looks…

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  1. 2026-10-21 08:20 · DEV Community — AI
    Your AI coding agent can read 1,000 files and still miss the one that matters.

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