# Agent Session: opencode-task80-ipc-contract-20260222T001728Z-obrv

- alias: `opencode-task80-ipc-contract`
- mission: `Execute TASK-80 IPC contract typing + runtime payload validation via writing-plans + executing-plans (no commit).`
- status: `done`
- started_utc: `2026-02-22T00:17:28Z`
- last_update_utc: `2026-02-22T00:56:00Z`

## Intent

- Load TASK-80 from Backlog MCP and capture implementation plan before edits.
- Strengthen typed IPC channel contracts and runtime payload validation at boundaries.
- Reduce unsafe `unknown` casts in IPC handlers and add malformed payload coverage.

## Planned Files

- `src/main/ipc.ts`
- `src/main/runtime/*`
- `src/shared/ipc/*`
- `src/main/**/*.test.ts`
- `docs/architecture.md`

## Files Touched

- `src/shared/ipc/contracts.ts`
- `src/shared/ipc/validators.ts`
- `src/core/services/ipc.ts`
- `src/core/services/anki-jimaku-ipc.ts`
- `src/preload.ts`
- `src/main/dependencies.ts`
- `src/main.ts`
- `src/main/runtime/composers/ipc-runtime-composer.ts`
- `src/main/runtime/composers/ipc-runtime-composer.test.ts`
- `src/core/services/ipc.test.ts`
- `src/core/services/anki-jimaku-ipc.test.ts`
- `package.json`
- `docs/architecture.md`

## Assumptions

- TASK-80 scope is main-process IPC boundary; keep external behavior/backward compatibility.
- Existing validation helpers may exist and should be reused over introducing heavy deps.
- Parallel subagents can split contracts/validation/tests/docs with non-overlapping files.

## Phase Log

- `2026-02-22T00:17:28Z` Session started; read backlog overview and TASK-80 details; beginning planning.
- `2026-02-22T00:21:00Z` Plan written to `docs/plans/2026-02-22-task-80-ipc-contract-validation.md` and recorded in Backlog TASK-80.
- `2026-02-22T00:55:30Z` Implemented IPC contract/constants + validators and rewired main/preload/anki-jimaku IPC boundary handlers with runtime payload checks and graceful malformed handling.
- `2026-02-22T00:56:00Z` Validation complete: `bun run build`, `bun run test:core:src`, `bun run test:core:dist` all passing; TASK-80 finalized Done in Backlog.