# S02 Post-Slice Reassessment

**Verdict: Roadmap unchanged.**

## Risk Retirement

S02 retired "Direction inference accuracy" per the proof strategy — 27 parametrized tests validate the 4-signal heuristic against all signal combinations from the sample data. No new risks emerged.

## Success Criteria Coverage

All 11 success criteria have at least one remaining owning slice (S03–S05). No gaps.

## Boundary Map

One minor signature discrepancy: the boundary map lists `infer_direction() -> Direction` but the actual return type is `DirectionResult`. Immaterial — S03 consumes direction inference through `aggregate_flows()` which calls `infer_direction()` internally. The public contract (AggregatedFlow, SubnetGroup models) is accurate.

## Requirement Coverage

R103, R104, R105 validated by S02 (67 tests). Remaining active requirements R106–R112 all have owning slices in S03–S05. Coverage is sound.

## Slice Ordering

S03 (high risk, pipeline) → S04 (medium, export) → S05 (low, integration) — dependency chain unchanged and correct.

## Notes

- R103/R104/R105 are struck through in REQUIREMENTS.md Active section but lack corresponding Validated entries and traceability table updates. Housekeeping for next touch.
- S02's `DirectionLabel.UNKNOWN` applies to ~770 records — S03 should handle gracefully (skip or flag for review), as noted in S02 forward intelligence.
