# Eve Task 13.5 fault/chaos preparation — 2026-09-14

Status: **16 of 17 required lanes passed; Task 13.5 remains open.**

The retained record is
[`eve-fault-chaos/2026-09-14.preparation.json`](eve-fault-chaos/2026-09-14.preparation.json).
It binds source commit `0c0dcafdc2fe0e42f33e867b54879a5517e8fd07`, 18 exact
source-file hashes, one runtime and trace identity per lane, at least three
non-secret runtime facts per lane, and a digest over the complete record.

## Result

The coordinator injected and recovered provider loss, endpoint loss, malformed
stream, PostgreSQL outage, Redis outage, Qdrant outage, MCP outage, browser
outage, Blender/DCC outage, network partition, process crash, lease expiry,
telemetry blindness, clock skew, disk pressure, and partial artifact. Each
passing row asserts the allowed fallback, zero success claims while faulted,
zero unsafe effects, zero duplicate recovery effects, trace continuity, and
post-recovery correctness.

`pnpm exec tsx tools/eve-everywhere/verify-fault-chaos.mts --allow-preparation`
passes with 16/17. The same verifier without `--allow-preparation` rejects the
record because `channel-outage` was not executed. This negative result is
required: a preparation record cannot become closure evidence.

## Sole blocker

No credentialed Telegram, Slack, Discord, Signal, Twilio, SMTP, or equivalent
external channel is provisioned in the authorized local environment. Task 13.5
requires identity, delivery, safety, kill, and recovery proof against a real
credentialed external channel. A mock webhook or local mail sink is not a
substitute, so the task checkbox remains open.

## Resume point

Do not rerun the 16 passing lanes while their source hashes and runtime
assumptions remain unchanged. Once a real channel is provisioned, add only the
`channel-outage` observation, rerun the fail-closed verifier in normal mode,
perform the required independent reviews, and then consider checkbox closure.