The default browser_exec tool ran the `browser-use` CLI from a PM side
environment (browser-use==0.13.10 in <home>/environments/browser-use),
provisioned by the installers and `hermes update`. Sealed Desktop payloads
skip that step, so the Desktop app never had it and silently fell back to
the built-in tools; the side env was also per-profile and 225 MB.
The CLI's execution path is only `browser_harness.run.main()`; the
browser-use agent framework (anthropic/openai/google-api pins, 93 MB of
googleapiclient) is never imported. browser-harness itself is 2.6 MB of
pure Python whose pins (Pillow 12.3.0, websockets 15.0.1) already match
Hermes's own, so it becomes a core dependency and runs on sys.executable:
- pyproject/uv.lock: browser-harness==0.1.13 (+ cdp-use, fetch-use).
- _find_cli() returns [sys.executable, -m, browser_harness.run]; the child
env points PYTHONPATH at the harness site dir (the Desktop store
interpreter boots without a venv and the harness daemon re-runs
sys.executable), replacing whatever the agent inherited.
- The side-env provisioning (install_cli, the update/installer step) goes.