# Agent Session: opencode-task95-immersion-tracker-20260221T031846Z-p4k9

- alias: `opencode-task95-immersion-tracker`
- mission: `Implement TASK-95 immersion-tracker extraction into focused collaborators and seam tests`
- status: `handoff`
- started_utc: `2026-02-21T03:18:46Z`
- backlog_ticket: `TASK-95`

## Intent

- reduce `src/core/services/immersion-tracker-service.ts` LOC; preserve public behavior.
- extract focused modules under `src/core/services/immersion-tracker/` (types/reducer/query/maintenance/queue helpers).
- add/update seam tests in `src/core/services/immersion-tracker-service.test.ts`.

## Planned Files

- `src/core/services/immersion-tracker-service.ts`
- `src/core/services/immersion-tracker/*`
- `src/core/services/immersion-tracker-service.test.ts`

## Assumptions

- existing TASK-95 plan allows independent immersion-tracker slice.
- no backlog file edits requested.

## Phase Log

- `2026-02-21T03:18:46Z` start; context loaded; beginning code/test extraction.
- `2026-02-21T03:26:51Z` refactor complete; extracted `types/reducer/query/maintenance/queue` modules; added seam tests; ran `bun run build && node --test dist/core/services/immersion-tracker-service.test.js`.

## Handoff

- touched: `src/core/services/immersion-tracker-service.ts`, `src/core/services/immersion-tracker-service.test.ts`, `src/core/services/immersion-tracker/*`.
- behavior guardrails: kept `ImmersionTrackerService` public API and DB schema/event constants stable.
- note: sqlite-backed tests skip in this environment; seam unit tests run and pass.