# Phase 0 structure and semantic-contract evidence

Captured: 2026-07-14 (America/Los_Angeles)
Repository HEAD: `00bf3cfb7622223cbfde4127cd8d083097365823`

## Completed planning work

- Created distinct Setup A and Setup B inventory records.
- Created distinct Setup A and Setup B evidence directories.
- Inventoried startup-critical configuration fields, defaults, UI limits, and
  consumers in `docs/configuration-validation-and-recovery.md`.
- Recorded conservative recovery classes, cross-field rules, diagnostics, test
  expectations, and six owner decisions required before implementation.
- Did not alter startup recovery behavior or begin hardware/endurance testing.

## Verification

`script/check-sd-safety.ps1` passed all ten checks:

- SD error callback and unavailable-state handling;
- bounded queue and immutable controller snapshots;
- bounded system-monitor completion wait;
- guarded file close, retained flush status, and media probe;
- FileX fault tolerance and bounded export storage.

The planning `index.json` parsed successfully and all new setup/contract files
were present.

The incremental e2 managed Debug build completed successfully with existing
compiler warnings and produced:

| Artifact | Bytes | SHA-256 |
| --- | ---: | --- |
| `Debug/7520553_SMI_FW.elf` | 14157216 | `0BB78D3EC50A0FFC22148814F4D72B29E1E9A8963F30FDEF3076F4D2A31E0C3A` |
| `Debug/7520553_SMI_FW.srec` | 8451786 | `872163D6B1B5AAA05D4EDE14B95A4202D301AC9EC2EDAF6A0735F95C4EEC4EE6` |
| `Debug/7520553_SMI_FW.map` | 36566300 | `C375DBAD382AA6CE6E85982CC682E4F56D65CD3D86E7254494D30968B905BC7C` |

These are build-baseline artifacts, not an integrated semantic-validation
candidate and not authorization to program either setup.

## Remaining gates

- Physical identities, backups, media, recovery paths, safety provisions, and
  role/authority fields remain blank in both setup records.
- The product/configuration owners must resolve the six decisions in the draft
  contract before semantic validation or its automated negative tests begin.
- Hardware qualification and the Phase 5 datalogger/media campaign remain
  gated by the setup baselines and explicit test authority.

