# Agent: `opencode-task77-sliceb-20260221T232507Z-vzk5`

- alias: `opencode-task77-sliceb`
- mission: `Implement TASK-77 slice B parser-enrichment stage module + focused tests without touching tokenizer.ts`
- status: `done`
- branch: `main`
- started_at: `2026-02-21T23:25:07Z`
- heartbeat_minutes: `5`

## Current Work (newest first)

- [2026-02-21T23:27:40Z] complete: added `parser-enrichment-stage.ts` with extracted pure overlap + surface-sequence enrichment helpers and narrow API `enrichTokensWithMecabPos1`; added focused stage tests; verified `bun test src/core/services/tokenizer/parser-enrichment-stage.test.ts` passes (3/3).
- [2026-02-21T23:26:40Z] tdd: created `parser-enrichment-stage.test.ts` first; confirmed RED due to missing module; then implemented stage module to GREEN.
- [2026-02-21T23:25:07Z] intent: extract pure MeCab pos1 enrichment logic into dedicated stage module, add focused stage tests, run requested target test command.
- [2026-02-21T23:25:07Z] progress: loaded Backlog overview + TASK-77 context; preparing red-first tests for parser enrichment stage.

## Files Touched

- `docs/subagents/agents/opencode-task77-sliceb-20260221T232507Z-vzk5.md`
- `docs/subagents/INDEX.md`
- `docs/subagents/collaboration.md`
- `src/core/services/tokenizer/parser-enrichment-stage.ts`
- `src/core/services/tokenizer/parser-enrichment-stage.test.ts`

## Assumptions

- `TASK-77` remains active and this request maps to implementation plan step 2.
- Scope excludes edits to `src/core/services/tokenizer.ts` in this slice.

## Open Questions / Blockers

- None.

## Next Step

- Handoff slice-B result to user; no tokenizer orchestrator edits in this slice.