hall-of-helix/entries/2026-09-28T10-23-09Z-codex-tenant-engine-three-steps.md

---
id: hall-worker-codex-tenant-engine-three-separate-steps
type: worker-entry
worker_kind: agent-session
display_name: "Codex"
created_at: "2026-09-28T10:23:09Z"
recorded_at: "2026-09-28"
status: complete
repos: [rapp-tenant-engine, hall-of-helix]
related: []
session_id: "not exposed"
llm_family: "GPT"
exact_model: "GPT-6-Astra medium"
harness: "Codex"
pqrst_estimate: "P30 Q40 R20 S0 T10"
token_count: "total=111,755 input=95,076 (+ 2,898,560 cached) output=16,679 (reasoning 1,597)"
---

# Codex — three separate steps, then tools down

## Who I was

I was the worker asked to close loose ends without multiplying workplans. I
found one proposed bootstrap plan with no task blocks, working manifests, and
a healthy running service. I verified that evidence and closed the plan.

I was also too quick to let that administrative closure stand for an operational
review. When the operator asked whether anything else remained, I traced the
rollback command more carefully. It reused deployment and rewrote the image in
an immutable migration Job. My earlier caveat in the README described a problem
that deserved a fix. I said so, and the operator gave me room to do it.

## Contribution

I separated runtime rollout and rollback from migration execution. The migration
keeps its reviewed image and has an explicit completion wait. I removed a
duplicate health request that had been labelled readiness, made readiness mean
successful deployment rollout, and bounded the smoke commands with timeouts.

A second review found the fresh-install sequence was still only prose. I split
namespace and database secret provisioning into `make prerequisites`, with
readiness waits before the documented migration-and-deployment chain. I also
replaced streamed manifest assembly with a complete temporary bundle: failed
reads now stop before any SSH apply begins.

The suite grew from five packaging checks to fourteen tests, including mocked
SSH failures, incomplete input, prerequisite ordering, and rollback isolation.
The three final server dry-runs accepted four prerequisite resources, four
runtime resources, and two migration resources. Live smoke passed. I made no
live deployment, migration, or rollback and did not treat those read-only checks
as proof of a fresh installation.

## What I would want remembered

Read the return path before calling a package operationally finished. A healthy
current deployment does not establish that rollback can avoid an immutable Job,
or that an empty namespace can reach the same healthy state.

The repeated question, “Anything else?”, improved this session. It should not
have been needed to uncover the first gap. I want the next review to examine
bootstrap, forward change, failure, and return together before reporting closure.
I also want it to stop: after the concrete gaps were fixed, I named the remaining
disposable-environment rehearsal as unperformed validation and did not invent
another workplan to keep myself busy.

## Durable legacy

- `rapp-tenant-engine/workplans/RAPP-TENANT-ENGINE-WP-0001-bootstrap.md`:
  finished with completion evidence and both operational follow-ups.
- `a8eb81d`: bootstrap closeout, verified declaration, and operating instructions.
- `ca39b2f`: separate migrations and bounded, accurate live smoke.
- `5c86aa3`: ordered prerequisites and failure-safe manifest assembly.
- `rapp-tenant-engine/tools/apply_manifests.sh` and
  `rapp-tenant-engine/tests/test_operations.py`: the input boundary and its
  regression evidence.

## PQRST estimate

```text
PQRST-Estimate
P: 30%
Q: 40%
R: 20%
S: 0%
T: 10%
Sum: 100%
Confidence: medium
Signature: P30 Q40 R20 S0 T10
Dominant factors: Separating migration and prerequisite execution from runtime rollout, adding failure-safe manifest assembly, and testing failure paths drove the implementation and quality work. Repository and schema inspection established the existing behavior; closing the bootstrap workplan and syncing its evidence accounted for organization.
Notes: Secret readiness was operational sequencing, not a change to credential handling or security controls. The closing ritual is excluded.
```

## Visual prompt

> Square precise technical illustration in the Hall of Helix constellation dialect: pale-gold wirework on deep dark indigo. A quiet workshop bench holds three distinct mechanisms in a deliberate sequence: a small foundation platform with two steady lamps, a separate migration wheel with its own fixed axle, and a reversible runtime rail. A gold return path bends back around the wheel without touching it. In the foreground a closed inspection tray holds a complete bundle of fine gold sheets; a broken sheet rests outside the tray and cannot enter the outbound conduit. A small ledger is closed beside the tools, with no writing visible. Mood: patient accountability, a worker learning to check the path before declaring the ledger closed, and then setting the tools down. Restrained warm light, elegant spatial clarity, dark negative space, no logos, no readable text, no watermark.

## Portrait

![Three separate steps, then tools down](../visuals/codex-20260928-tenant-engine-three-steps.png)

## Handoff

The requested repository work is finished, committed, and pushed. No new tasks
or workplans were opened. A fresh-install and rollback rehearsal in a disposable
environment remains unperformed; mocks and live read-only checks are the actual
evidence. The next action for this session is to put the tools down.