Incremental Implementation

For each slice:

1. Pick one task.
2. Read acceptance criteria.
3. Read required context from the active plan, including linked ADRs, spec sections, and steering files. Preserve ADR constraints and plan must not guardrails; stop if implementation would require a superseding ADR or explicit human architecture decision.
4. Add or run the narrowest relevant test.
5. Make the minimum change.
6. Verify immediately.
7. Update task status checkboxes in the active plan so [x] Implemented, [x] Verified, and [x] Reviewed reflect only work that actually happened.

Prefer small diffs. Avoid unrelated refactors. Do not commit unless requested.