tick-history: 2026-04-29T05:01Z — tenth tick narrow drain (hallucinated-display-artifact thread)

docs/hygiene-history/ticks/2026/04/29/0501Z.md

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+| 2026-04-29T05:01:10Z | claude-opus-4-7 | 26f978a2 | tenth tick — narrow drain. PR #777 thread was the same hallucinated "leading space and `1 \|\|`" claim Copilot raised on PR #760 weeks earlier in this session. The shard file starts with `|` cleanly (verified `head -c 5 ... \| xxd` returns bytes `7c 20 32 30 32` = `| 202`...). Resolved as not-actionable display artifact per the precedent set on PR #760. PR #775 + #777 + #778 still BLOCKED waiting for CI on latest commits. No PRs merged this tick (CI is the rate-limit, not threads). The tick used the new bare-`main` rule with explicit hard-stop pattern (`git switch --detach refs/remotes/origin/main \|\| { echo "FAIL"; exit 1; }`) — no `fatal` errors hit, branch creation clean. | [#777](https://github.com/Lucent-Financial-Group/Zeta/pull/777) [#775](https://github.com/Lucent-Financial-Group/Zeta/pull/775) [#778](https://github.com/Lucent-Financial-Group/Zeta/pull/778) | Trajectory observation: the recurring-fix-class catalog now includes a meta-class — **hallucinated-display-artifact-thread** — where the reviewer reports a problem that's actually a renderer view-mode confusion, not file content. The right response is empirical verification (`xxd` / byte inspection) followed by an explanatory PR comment + thread resolution. The catalog continues to grow at bounded rate; per-finding fix cost is now well below the per-tick budget. The "if zero new threads land on a push, convergence has fully landed" criterion is approaching — most recent pushes have surfaced 0-3 new threads, and the catalog of remaining failure modes is shrinking. |