[APP] Browser Cloud (TestMu AI) — I'd like to contribute the integration as an official from TestMu AI organization

**Name of app / service**
TestMu AI Browser Cloud

**Link to developer documentation**
- Developer Docs: https://www.testmuai.com/support/docs/connect-to-session/
- Website: https://testmuai.com
- SDK: `@testmuai/browser-cloud` (npm) — cloud browser automation over Puppeteer / Playwright / Selenium
- Auth: username + access key pair (issued from TestMu AI account settings)

**Is lack of support preventing you from moving forward, or do you have a workaround?**
No official Pipedream integration exists yet. The current workaround is calling the TestMu AI Browser Cloud API from a Node.js code step with the SDK, but a native app (with managed auth) would let workflows create cloud browser sessions and run scrape/screenshot/PDF actions without custom code. I'd like to build and contribute this integration myself as a PR — opening this so the `browser_cloud` app slug + managed auth config can be registered for components to attach to. I am the official point of contact from TestMu AI and work with the organization.

**Are there specific actions or triggers you'd like to see for this app? Please let us know here or use the Action and Trigger issue templates to open requests for each!**
Session lifecycle:
- Create Browser Session (returns session id + live session viewer URL)
- Release Session

Interaction (operate on an existing session id):
- Navigate / Go To URL
- Click Element (by selector)
- Type / Fill Input (selector + text)
- Wait For Selector
- Get Text / Extract Element Content
- Execute JavaScript (run arbitrary script, return result)

One-shot outputs:
- Scrape URL (html / text / markdown / readability)
- Capture Screenshot (full-page / element)
- Generate PDF

I'll open separate [ACTION] issues per the Action template if the team prefers
one-per-action tracking.