refactor(launcher): split CLI flow into command modules

Isolate process-side effects behind adapter seams and keep wrapper behavior stable while improving command-level testability.

docs/subagents/agents/opencode-task81-launcher-modules-20260222T005725Z-8oh8.md

@@ -0,0 +1,54 @@
+# Agent Session: opencode-task81-launcher-modules-20260222T005725Z-8oh8
+
+- alias: `opencode-task81-launcher-modules`
+- mission: `Execute TASK-81 launcher command-module/process-adapter refactor via writing-plans + executing-plans (no commit).`
+- status: `done`
+- started_utc: `2026-02-22T00:57:25Z`
+- last_update_utc: `2026-02-22T01:09:30Z`
+
+## Intent
+
+- Load TASK-81 from Backlog MCP and capture full implementation plan before code edits.
+- Refactor launcher into focused command modules and process adapters without CLI behavior drift.
+- Improve launcher test seams with adapter-mocked unit/integration tests.
+
+## Planned Files
+
+- `launcher/main.ts`
+- `launcher/*.ts`
+- `launcher/commands/*.ts`
+- `launcher/**/*.test.ts`
+- `package.json`
+- `docs/development.md`
+
+## Files Touched
+
+- `docs/subagents/agents/opencode-task81-launcher-modules-20260222T005725Z-8oh8.md`
+- `docs/subagents/INDEX.md`
+- `docs/subagents/collaboration.md`
+- `docs/plans/2026-02-22-task-81-launcher-command-modules-process-adapters.md`
+- `launcher/main.ts`
+- `launcher/process-adapter.ts`
+- `launcher/config-path.ts`
+- `launcher/commands/context.ts`
+- `launcher/commands/config-command.ts`
+- `launcher/commands/doctor-command.ts`
+- `launcher/commands/mpv-command.ts`
+- `launcher/commands/app-command.ts`
+- `launcher/commands/jellyfin-command.ts`
+- `launcher/commands/playback-command.ts`
+- `launcher/commands/command-modules.test.ts`
+- `package.json`
+
+## Assumptions
+
+- TASK-81 scope is launcher architecture and tests only; keep command UX/exit semantics stable.
+- Existing TASK-73/74 changes provide stable baseline tests to preserve behavior.
+- Parallel subagents can split command extraction and adapter seams where file overlap is controlled.
+
+## Phase Log
+
+- `2026-02-22T00:57:25Z` Session started; read subagent protocol docs + backlog workflow + TASK-81 details.
+- `2026-02-22T01:01:30Z` Wrote TASK-81 implementation plan at `docs/plans/2026-02-22-task-81-launcher-command-modules-process-adapters.md` and recorded plan/status in Backlog MCP.
+- `2026-02-22T01:07:40Z` Implemented command-module extraction + process adapter seam and rewired `launcher/main.ts` into thin dispatcher.
+- `2026-02-22T01:09:30Z` Added adapter-mocked command tests and updated test scripts; verified `bun run test:launcher && bun run test:core:src` passing.