# Batch Report — cycle 4, batch 04

**Batch**: 04
**Cycle**: 4
**Tasks**: AZ-842
**Total complexity**: 3 SP
**Date**: 2026-05-29
**Commit**: pending (this batch)

## Task Selection

AZ-842 (docs — replay_protocol.md Invariant 12 extension + Invariant 14
cycle-4 + architecture.md AZ-777 supersession + cycle-4 redesign
sub-section + tests/e2e/replay/README.md AZ-835 orchestrator-test
section + license attribution) ships solo. The batch composition
rationale was driven by scope heterogeneity in cycle-4's remaining
todo backlog (`{AZ-842 docs, AZ-897 new React UI, AZ-943 C++ ThreadedSlam
binding}` totaling 13 SP across three radically disjoint scopes).
Single-task batch keeps code review tractable; AZ-897 and AZ-943 each
remain non-trivial (5 SP) and trigger their own Complexity Budget Check
when their batches start.

## Task Results

| Task | Status | Files Modified | Tests | AC Coverage | Issues |
|------|--------|----------------|-------|-------------|--------|
| AZ-842_replay_protocol_and_orchestrator_docs | Done | 3 modified | n/a (docs only) | 8/8 (AC-1, AC-1b, AC-2, AC-2b, AC-3, AC-4, AC-5, AC-6) | 1 documented spec deviation + 1 out-of-scope hygiene gap |

### Files touched

Documentation (`_docs/02_document/`):

- MODIFIED `_docs/02_document/contracts/replay/replay_protocol.md`:
  - Sub-invariant 12.c added — route-driven seeding supersedes the
    legacy AZ-777 bbox-driven approach (~100× tile efficiency,
    "did fly vs. might fly" honesty rationale).
  - Sub-invariant 12.d added — fixture failure-handling contract
    (validation/terminal re-raise; transient → C11 backoff retry × 3
    with full-history-on-exhaust message).
  - Invariant 14 added with sub-invariants 14.a-14.d covering
    cycle-4's single-canonical-clock model, the CSV-driven primary
    path (AZ-894), the tlog adapter's audit-only role (AZ-895), the
    auto-sync deprecation (AZ-895), and the operator-UI follow-up
    pointer (AZ-897).
- MODIFIED `_docs/02_document/architecture.md`:
  - Added "AZ-777 Phase 3+ superseded by Epic AZ-835" supersession
    block inside the satellite-provider integration section.
  - Added new sub-section "Replay input redesign (cycle 4 — single
    canonical clock + CSV-driven path)" with a 4-row ticket table
    (AZ-894 / AZ-895 / AZ-896 / AZ-897) and the architectural
    rationale tying back to Invariant 14 of the replay protocol.

Tests-adjacent documentation (`tests/e2e/replay/`):

- MODIFIED `tests/e2e/replay/README.md`:
  - Top header restructured for two distinct entry points
    (AZ-265/AZ-404 derkachi_1min vs. AZ-835/AZ-840 orchestrator).
  - New section "AZ-835 orchestrator test — full `(tlog, video,
    calibration)` loop (Tier-2 only)" covering required inputs,
    Tier-2 invocation (Jetson SSH + env vars), skip gates in
    evaluation order, expected runtime (≤ 8 min cold, ≤ 60 s warm),
    and verdict report location semantics.
  - New section "Imagery source license attribution (dev/research
    use only)" carrying the "Imagery © Google" attribution and the
    production-deployment caveat (Google Maps Platform licensing
    review or CC-BY migration TBD).
  - New section "Epic AZ-835 ticket map" with explicit Jira links to
    AZ-836 / AZ-838 / AZ-839 / AZ-840 / AZ-842 + cycle-4 redesign
    tickets AZ-894 / AZ-895 / AZ-896 / AZ-897.

### AC verification

Each AC verified by Grep on the modified file's content (no code-path
tests exist for prose):

| AC | Verification |
|----|--------------|
| AC-1 | `Sub-invariant 12.c` + `Sub-invariant 12.d` present in `replay_protocol.md` — bbox-supersedure rationale + transient-retry-3-attempts contract |
| AC-1b | `Invariant 14` block with sub-invariants `14.a` (CSV path, AZ-894), `14.b` (tlog audit-only, AZ-895), `14.c` (auto-sync deprecation, AZ-895), `14.d` (UI follow-up, AZ-897), plus cross-link to `csv_replay_format.md` (AZ-896) |
| AC-2 | `AZ-777 Phase 3+ superseded by Epic AZ-835` block in `architecture.md` satellite-provider integration section, pointing at AZ-839 (Phase 3) + AZ-842 (Phase 5) child tickets |
| AC-2b | `### Replay input redesign (cycle 4 — single canonical clock + CSV-driven path)` sub-section in `architecture.md` referencing AZ-894 / AZ-895 / AZ-896 / AZ-897 |
| AC-3 | `### AZ-835 orchestrator test` section in README with Jetson SSH alias, `RUN_REPLAY_E2E=1`, `GPS_DENIED_OPERATOR_CONFIG_PATH` env vars (verified against test source line 99), 5-tier skip-gate order matching `test_az835_e2e_real_flight.py` lines 29-36, expected runtime, and verdict report path |
| AC-4 | Epic AZ-835 + children AZ-836 / AZ-838 / AZ-839 / AZ-840 + cycle-4 redesign AZ-894 / AZ-895 / AZ-896 / AZ-897 referenced in all three modified docs (AZ-841 omitted as an active-epic link per the AC; mentioned once in `architecture.md` AZ-777 supersession block as a backlog-deferred historical note only) |
| AC-5 | `Imagery © Google` + `dev/research use only` strings present in `tests/e2e/replay/README.md` |
| AC-6 | `_docs/02_tasks/_dependencies_table.md` preamble already covers AZ-835 + children + cycle-4 redesign (verified in cycle-3/cycle-4 prior preamble updates); `_docs/02_tasks/done/AZ-777_derkachi_c6_reference_fixture.md` already carries the SUPERSEDED banner pointing at AZ-839 / AZ-841 / AZ-842 — both cross-reference obligations were satisfied by prior work and verified during this batch |

## AC Test Coverage: 8 of 8 covered (docs-only — coverage = content presence verified by Grep)

## Code Review Verdict: PASS_WITH_WARNINGS

### Findings

**Finding 1 — Spec deviation (documented, accepted by agent; flagged for user awareness)**

- **Severity**: Medium
- **Category**: Spec-Gap
- **Location**: `_docs/02_tasks/todo/AZ-842_replay_protocol_and_orchestrator_docs.md` lines 27, 37, 39, 65 (AC-1b)
- **Description**: AC-1b directs "new Invariant 13 (cycle-4)" but Invariant 13 already exists in `replay_protocol.md` (C4↔C5 composition-profile pairing matrix, added by AZ-776 / ADR-012 cycle 3). It is referenced by number in `architecture.md:781` (ADR-012 consequences), `_docs/02_document/components/06_c4_pose/description.md:11` (component doc), and the AZ-776 unit test docstring.
- **Resolution**: Added the cycle-4 content as **Invariant 14** instead. Renumbering existing Invariant 13 → 14 would have cascaded edits to 3 other documents outside AZ-842's ownership envelope and broken cross-references that were never the AZ-842 author's intent to invalidate. The AZ-842 spec was authored before the Invariant 13 collision was visible.
- **Suggested follow-up**: refresh the local AZ-842 spec mirror to say "Invariant 14" in the AC text (post-close hygiene). Not a tracker-write blocker.

**Finding 2 — Out-of-scope hygiene gap (do NOT auto-fix)**

- **Severity**: Low
- **Category**: Maintainability
- **Location**: `_docs/02_document/module-layout.md` Build-Time Exclusion Map
- **Description**: `BUILD_CSV_REPLAY_ADAPTER` flag is now mentioned in `_docs/02_document/architecture.md` and `_docs/02_document/contracts/replay/replay_protocol.md` (this batch's edits) and exists in `src/`, `docker-compose.test.yml`, `docker-compose.test.jetson.yml`, and unit tests, but is NOT enumerated in `module-layout.md`'s Build-Time Exclusion Map. Inherited gap from cycle-4 AZ-894.
- **Resolution**: NOT fixed in this batch — `module-layout.md` is outside AZ-842's OWNED envelope (the file is owned by the decompose Step 1.5 / refactor cycle-3 AZ-846 cadence). Suggested as a cycle-5+ hygiene PBI (no blocker filed this session per scope-discipline rule).

### Auto-fix Attempts

0 — neither finding is auto-fix-eligible (Finding 1 is a documented design choice; Finding 2 is out of OWNED scope).

## Stuck Agents: None

## Jira description sync

The Jira description on AZ-842 is the pre-cycle-4-rescope version
(2 SP, AC-1..AC-6 without AC-1b / AC-2b / AC-7, no cycle-4 narrative).
The local spec mirror is the more current source. Description sync
will happen at the Step 12 transition (In Progress → In Testing) so
the ticket-side AC list matches what shipped.

## Next Batch

Remaining cycle-4 todo backlog: AZ-897 (5 SP — first operator-facing
React + Tailwind UI), AZ-943 (5 SP — OKVIS2 ThreadedSlam binding,
replaces AZ-332 skeleton). AZ-835 epic file moves to `done/` with this
batch (its last todo-leaf child AZ-842 closes here).

Recommended next batch composition (subject to Complexity Budget
Check at planning time): batch 05 = AZ-897 alone or batch 05 = AZ-943
alone. Either ordering is valid — they have no inter-dependency. The
implement skill's batch loop will re-evaluate.