vscode-cowriting-plugin/sessions/0002/SESSION-0002.0-TRANSCRIPT-2026-06-09T23-44--INPROGRESS.md

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--.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.