Dotta
73ef40e7be
## Thinking Path > - Paperclip is a control plane for AI-agent companies. > - External adapters can provide UI parser code that the board loads dynamically for run transcript rendering. > - Running adapter-provided parser code directly in the board page gives that parser access to same-origin browser state. > - This PR narrows that surface by evaluating dynamically loaded external adapter UI parser code in a dedicated browser Web Worker with a constrained postMessage protocol. > - The worker here is a frontend isolation boundary for adapter UI parser JavaScript; it is not Paperclip's server plugin-worker system and it is not a server-side job runner. ## What Changed - Runs dynamically loaded external adapter UI parsers inside a dedicated Web Worker instead of importing/evaluating them directly in the board page. - Adds a narrow postMessage protocol for parser initialization and line parsing. - Caches completed async parse results and notifies the adapter registry so transcript recomputation can synchronously drain the final parsed line. - Disables common worker network, persistence, child worker, Blob/object URL, and WebRTC escape APIs inside the parser worker bootstrap. - Handles worker error messages after initialization and drains pending callbacks on worker termination or mid-session worker error. - Adds focused regression coverage for the parser worker lockdown and unused protocol removal. ## Verification - `pnpm exec vitest run --config ui/vitest.config.ts ui/src/adapters/sandboxed-parser-worker.test.ts` - `pnpm exec tsc --noEmit --target es2021 --moduleResolution bundler --module esnext --jsx react-jsx --lib dom,es2021 --skipLibCheck ui/src/adapters/dynamic-loader.ts ui/src/adapters/sandboxed-parser-worker.ts ui/src/adapters/sandboxed-parser-worker.test.ts` - `pnpm --filter @paperclipai/ui typecheck` was attempted; it reached existing unrelated failures in HeartbeatRun test/storybook fixtures and missing Storybook type resolution, with no adapter-module errors surfaced. - PR #4225 checks on current head `34c9da00`: `policy`, `e2e`, `verify`, `security/snyk`, and `Greptile Review` are all `SUCCESS`. - Greptile Review on current head `34c9da00` reached 5/5. ## Risks - Medium risk: parser execution is now asynchronous through a worker while the existing parser interface is synchronous, so transcript updates should be watched with external adapters. - Some adapter parser bundles may rely on direct ESM `export` syntax or browser APIs that are no longer available inside the worker lockdown. - The worker lockdown is a hardening layer around external parser code, not a complete browser security sandbox for arbitrary untrusted applications. > For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and discuss it in `#dev` before opening the PR. Feature PRs that overlap with planned core work may need to be redirected — check the roadmap first. See `CONTRIBUTING.md`. ## Model Used - OpenAI Codex, GPT-5-based coding agent runtime, shell/git tool use enabled. Exact hosted model build and context window are not exposed in this Paperclip heartbeat environment. ## Checklist - [x] I have included a thinking path that traces from project context to this change - [x] I have specified the model used (with version and capability details) - [x] I have checked ROADMAP.md and confirmed this PR does not duplicate planned core work - [x] I have run tests locally and they pass - [x] I have added or updated tests where applicable - [x] If this change affects the UI, I have included before/after screenshots - [x] I have updated relevant documentation to reflect my changes - [x] I have considered and documented any risks above - [x] I will address all Greptile and reviewer comments before requesting merge
@paperclipai/ui
Published static assets for the Paperclip board UI.
What gets published
The npm package contains the production build under dist/. It does not ship the UI source tree or workspace-only dependencies.
Storybook
Storybook config, stories, and fixtures live under ui/storybook/.
pnpm --filter @paperclipai/ui storybook
pnpm --filter @paperclipai/ui build-storybook
Typical use
Install the package, then serve or copy the built files from node_modules/@paperclipai/ui/dist.