# Agent Session: opencode-task78-config-domain-20260221T235604Z-p9x2

- alias: `opencode-task78-config-domain`
- mission: `Execute TASK-78 modularize config definitions and validation by domain end-to-end without commit`
- status: `done`
- last_update_utc: `2026-02-22T00:06:30Z`

## Intent

- Pull TASK-78 from Backlog MCP; use writing-plans then executing-plans workflow.
- Preserve `ConfigService` public API compatibility.
- Split config definitions/validation into domain modules; add focused domain tests.

## Planned Files

- `src/config/definitions.ts`
- `src/config/service.ts`
- `src/config/**`
- `docs/configuration.md`
- `docs/development.md` (if test workflow/docs update needed)

## Assumptions

- Backlog initialized; TASK-78 exists and ready.
- Existing config tests are baseline for behavior parity.

## Log

- `2026-02-21T23:56:04Z` started; loaded backlog overview + TASK-78 context; beginning planning workflow.
- `2026-02-21T23:58:00Z` wrote execution plan at `docs/plans/2026-02-21-task78-config-domain-modularization-plan.md` using writing-plans skill.
- `2026-02-22T00:03:00Z` implemented domain modularization: `src/config/definitions.ts` now composes domain modules under `src/config/definitions/*`.
- `2026-02-22T00:04:00Z` parallel subagents completed docs + domain-registry tests (`src/config/definitions/domain-registry.test.ts`, `docs/development.md`).
- `2026-02-22T00:05:00Z` verification: `bun test src/config/definitions/domain-registry.test.ts`, `bun run test:config:src`, `bun run test:core:src` passed.
- `2026-02-22T00:05:00Z` blocker outside scope: `make generate-config` fails due pre-existing `src/main/state.test.ts` missing exports from `src/main/state`.
- `2026-02-22T00:05:00Z` backlog TASK-78 set to Done with AC/DoD checked and final summary.
- `2026-02-22T00:06:30Z` wired domain registry test into package config lanes (`test:config:src`, `test:config:dist`); reran `bun run test:config:src` (52 pass).