Add a local API client with authentication, collections and Postman imports #2

User problem

Developers need a browser API client to build and organize requests without switching to a separate desktop app.

Acceptance criteria

• Build HTTP requests with method, URL, headers, and JSON/form/raw bodies.
• Support Bearer, Basic, and API key authentication.
• Keep reusable requests in named collections with notes and saved assertions.
• Import literal cURL commands and supported Postman collections without executing shell commands or scripts.
• Support shared variables and named environments; saved URLs and Bearer tokens retain variable references.
• Report unsupported import/body/auth modes and block invalid requests.

Implementation status

Implemented and verified in PR #1 on feat/v1.1-workbench. PR #1 was merged into main on 2026-10-03, merge commit eeb65009fa6e343cf6dd1f67386be0afc5bbb3e5. GitHub automatically closed this issue as completed through the PR's closing reference. The source changes are now on main; the Chrome Web Store release remains pending.

Verification

Node tests cover variable resolution, cURL parsing, Postman import and unsupported modes. The Brave integration verifies Builder authentication and retained environment references.

Relevant source

workflow.js, workflow-ui.js, lab.js, lab-ui.js, dashboard.html

Related v1.1 work is tracked through PR #1. Follow-up improvements or bugs should use their own issue and PR.

Completion record

The implementation commits are 7b76001, 3ee1668, 4f1d89c, 504051e, and test follow-up 619736d. Relevant verification is described above and in PR #1. All 29 Node regressions and JavaScript syntax checks pass; GitHub CI passes on Node 22. The workbench/browser features were checked with isolated local HTTP/WebSocket fixtures; shortcut labels were also checked for Mac/Windows/Linux platforms. The maintainer merged PR #1, and GitHub closed this issue automatically; new bugs or follow-up scope should use a separate issue, or reopen this one if its original criteria fail.