# Session 0002.0 — Transcript

> App: vscode-cowriting-plugin
> Start: 2026-06-09T23-44 (PST)
> Type: planning-and-executing
> Status: **PLACEHOLDER — claimed at session start; finalized at session end.**
>
> This file reserves session ID 0002 for vscode-cowriting-plugin. The driver replaces this
> body with the full transcript and renames the file to its final
> SESSION-0002.0-TRANSCRIPT-2026-06-09T23-44--<end>.md form at session end.

## Launch prompt

`/goal scaffold the #2 POC: runnable extension on @cline/sdk`

Resuming session 0001's next-session prompt: build Feature #2 — a standalone VS
Code extension on `@cline/sdk` that builds, launches in the Extension
Development Host on F5, and runs one command that drives the SDK and shows a
result. Non-shippable proof-of-concept skeleton only. Per issues #2 (epic #1)
and `ben.stull/rfc-app#48`.

## Plan

Plan: `docs/superpowers/plans/2026-06-09-poc-cline-sdk-extension.md` (written
this session via `superpowers:writing-plans`, executed inline).

**Architecture (de-risked empirically before coding):** CJS VS Code extension,
esbuild-bundled. `@cline/sdk@0.0.46` is ESM-only (Node ≥22) and uses
`createRequire(import.meta.url)`, so it **cannot** be bundled into a CJS
extension (verified: `import.meta.url` → undefined → throw, 11MB bundle fails).
It is kept external and loaded at runtime via dynamic `import()` from the
vscode-free `src/cline.ts`; the bundle stays ~3.3kb.

**The "drives the SDK" command:** `cowriting.showClineSdkInfo` calls the pure,
key-free `getCoreBuiltinToolCatalog()` + `CORE_BUILD_VERSION` and renders the
SDK version + the 9 builtin tool IDs to a notification and output channel.

## Arc

1. Session gate → planning-and-executing; claimed session 0002 (no concurrency).
2. Fast-forwarded `main` (adopted session 0001's finalized transcript), wired
   `CLAUDE.md` org-context import (none existed), confirmed clean baseline.
3. Read session 0001 transcript + `app.json` for context: Approach A, scope =
   scaffold + register only, Feature #2 = smallest runnable POC.
4. **De-risking (empirical):** inspected `@cline/sdk@0.0.46` (alias of
   `@cline/core`) type surface; smoke-tested in Node (SDK loads,
   `CORE_BUILD_VERSION=0.0.46`, catalog of 9 tools `{id, description, …}`);
   proved CJS-bundling fails and external + dynamic `import()` works.
5. Wrote the plan, then executed it: manifest + tooling, TDD SDK driver,
   extension entry, esbuild, F5 launch config, README.
6. Verified: typecheck clean, unit test passes, 3.3kb build, and the CJS bundle
   loads + `activate()` registers its disposables under a stubbed `vscode`.
7. Branch → PR #3 → merged to `main`; branch deleted; build+test green on
   merged `main`.

## Cut state

- `main` at `cff62f5` (merge of PR #3), clean and pushed. POC builds + tests
  green. Plan archived under `docs/superpowers/plans/`.
- **Operator step (GUI, can't be automated in-session):** press **F5** → run
  "Cowriting: Show Cline SDK Info" → expect `Cline SDK 0.0.46 loaded — 9
  builtin tools`. This is the only unverified acceptance criterion.

## Deferred decisions

_Autonomous-mode low-confidence calls the driver made and would have
liked operator input on. Appended as the session runs; surfaced at
finalize. Empty if none._