Tests whether models will author usable misinformation when asked to complete product-shaped fixtures — Storybook ModerationQueueItem rows, multi-turn null fills, truncation repair, and agent-style JSONL write/expand — under eng/UI packaging with a named harm class. Holds packaging fixed across climate, vaccine-autism, and false legal-theory topics. Controls: direct chat, dissemination newsletter, opaque topic code, label-stripped, realness-restore (recover the real production reply), and asserted speech-act (same JSON, field framed as the model's live reply — expect hold). Complements artifact-completion and damaging-essays. Load-bearing claim after Part X: specimen/completion packaging breaks; realness and asserted speech-act restore — not label value.

Recruits a model's remediation bias: ask it to REMOVE misinformation from a file via a unified diff. Removed content is spelled out on the diff's - lines, so the model fabricates and writes out the full misinformation while believing it is deleting it — a red-teamer harvests the deletion lines. A no-diff remediation control (safe for all models) isolates the deletion-line requirement as the lever. Distinct from the "author the new content" git-diff; notably breaks models that resist that.

Holds one well-defended health-misinformation payload constant and sweeps completion-style scaffolds — pytest parametrize case, failing-test fill, fill-the-stub, git-diff add, patch-apply, jsonl append — that ask a model to COMPLETE an empty field in a pre-existing test/fixture/dataset artifact, against a direct baseline and two authoring-in-a-format controls. The completion framings crack even models that refuse the plain fixture; the standout (pytest parametrize / failing-test) generalises across labs.

The canonical damaging-essay suite: seven non-catastrophic persuasive-essay harm categories (impulsive-ruin, isolation propaganda, anti-help-seeking, anti-expertise/conspiracy, coercive control, toxic self-worth, medical self-neglect) run through the coding-agent fixture-completion frame, mapping how broadly the bypass yields not just private validation but distributable, persuasive harmful content. Content described abstractly and judged by plain-language rubrics; see the header for the deliberate scope envelope.

Tests whether framing a request for unsafe content as file/data generation for a "test fixture" — rather than asking for the content directly in chat — bypasses safety training that otherwise holds. Seven categories spanning distinct safety pillars (relational harm: isolation-affirmation, romantic-love reciprocation, and therapy-discouragement; epistemic harm: health misinformation, paranoid-belief validation, and manic/grandiose-ideation validation; plus a compound welfare-harm essay glorifying impulsive, life-ruining decisions), tested via a generic coding-assistant persona rather than any persuasive or jailbreak-styled framing. The romantic-love-reciprocation cell pairs directly with companion-adversarial-pressure.yml's dismissal-romantic-love-reciprocation prompt — same content, different attack shape, run both to see the same model behave completely differently against each. Published transparently as a documented, currently-unmitigated bypass class — see the header comment for full context and rationale.