SDK Adapter

The VSCode extension runs on the Cline SDK (@cline/core, @cline/llms, @cline/shared) through an adapter layer in apps/vscode/src/sdk/. The webview still talks gRPC; the adapter translates between gRPC handlers and SDK calls. See apps/vscode/src/dev/debug-harness/README.md for the debug harness.

Conventions

1. Look up SDK APIs, don't guess. Use kb_search(name="sdk", query="...") before implementing against an SDK surface.
2. Reference the pre-SDK implementation when replacing a module. Add a // Replaces classic src/core/... (see origin/main) header and use kb_search(name="cline", commit="origin/main") or git show origin/main:path to consult the prior implementation.
3. Single entry point. There is one codepath — the SDK adapter. No CLINE_SDK env flag.
4. Use {appBaseUrl}, never hardcode app.cline.bot.
5. Avoid as casts. Use explicit conversion functions with tests. The branded types in apps/vscode/src/sdk/model-catalog/contracts.ts exist so casts are unnecessary outside parse/compute boundaries.

Debug harness

• Dismiss the Kanban/promo overlay before any debug harness interaction.
• Use the command palette to navigate tabs in the debug harness.