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shard(tick): 2026-05-16T12:53Z — 3rd contamination in 4 ticks; mid-tick rate-reset #3875

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AceHack merged 1 commit into from
May 16, 2026
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shard(tick): 2026-05-16T12:53Z — 3rd contamination in 4 ticks; mid-tick rate-reset #3875

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56 changes: 56 additions & 0 deletions docs/hygiene-history/ticks/2026/05/16/1253Z.md
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# Tick 2026-05-16T12:53Z — Otto-CLI

Autonomous-loop cron fire. **3rd multi-Otto contamination in 4
ticks**. GraphQL still 0 at tick start (reset in 1 min — will
verify mid-tick to clear deferred-PR backlog).

## Refresh result

| Surface | State |
|---|---|
| Cron sentinel | `c9705646` armed |
| Rate limit (GraphQL) | 0/5000 (reset in **1 min** — opens cost-aware tier ≈12:55Z) |
| Rate limit (core) | 4979/5000 |
| Lior process | 1 (down from 4 — contention easing) |
| HEAD at tick start | `otto-cli-audit-subclass-catalog-2026-05-16-1156z` (3rd peer branch this session) |
| WT state | clean |
| Deferred-PR backlog (verified on origin) | 1221z `0f8d26b` + 1236z `7afaf00` |

## Contamination cadence — 4-tick view

| Tick | HEAD at tick start | Peer-side observation |
|---|---|---|
| 12:11Z | `otto-cli-b0206-audit-2026-05-16-1207z` | (own branch) |
| 12:21Z | `otto-cli-b0037.2-audit-2026-05-16-1131z` | MD018 fix branch (peer) |
| 12:36Z | `otto-cli-b0206-audit-2026-05-16-1207z` | bounced back (peer or self?) |
| 12:53Z | `otto-cli-audit-subclass-catalog-2026-05-16-1156z` | new peer branch |

HEAD has visited 3 distinct branches across 4 ticks. The defense
pattern (`git branch --show-current` at tick start +
`git switch -c <fresh-branch> origin/main` for shard authoring)
remains 100% effective: every contamination event caught before
any commit, zero false-branch commits.

## Operational tier — transition mid-tick

Tick starts **pure-git** (GraphQL 0). Rate-limit reset fires
≈12:55Z, opening **normal tier** (5000 budget).

Plan: ship shard via pure-git first; verify reset; then open
PRs for the deferred-PR backlog (1221z + 1236z + this tick's
branch) in a single coordinated burst.

## Sentinel + close

`CronList`: `c9705646` armed.

## Visibility signal

- Cron sentinel healthy
- 3rd contamination in 4 ticks — peer cadence stable at ~1
HEAD-move per tick
- Fresh branch `otto-cli-tick-2026-05-16-1253z` from
`origin/main`
- Mid-tick rate-limit-reset transition will clear deferred-PR
backlog (1221z + 1236z + this branch)
- Lior contention easing (4→1 procs)
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