Your AI Agent's Patch Is Fine. The Repo Won't Let You File It.

<p>The first hard failure in an agent-written contribution is not a failing test. It's a closed door, and it is documented before you write a line of code.</p> <p>Two different walls show up in large repos, and conflating them costs days.</p> <h2> Wall one: you cannot open the PR </h2> <p><code>python-jsonschema/jsonschema</code> has issue #1590 open since 2026-10-16: draft 2019-09 <code>unevaluat

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