hardening: ungoogled-chromium flags.md baseline update (2026-08-03)

[github-actions]

Ungoogled-Chromium docs/flags.md drift detected

The upstream flag reference has changed since the last pinned baseline.
Review the diff below and update HARDENING_FLAGS in
core/src/browsers/ungoogled.rs and core/src/browsers/helium.rs as needed.

⚠️ Nomad flags no longer in upstream docs

These flags are in Nomad's active HARDENING_FLAGS but no longer appear
in docs/flags.md. Verify they are not silently deprecated or renamed:

• --disable-background-networking
• --disable-breakpad
• --disable-component-update
• --disable-sync
• --load-extension=
• --no-first-run
• --user-data-dir=
• --webrtc-ip-handling-policy=default_public_interface_only

Diff (first 200 lines)

12c12
<   <code>Switch&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code> | Description
---
>   <code>Switch&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code> | Description
38d37
<   `--disable-sharing-hub` | Disables the sharing hub button.
44d42
<   `--remove-tabsearch-button` | Removes the tabsearch button from the tabstrip.

No changes are auto-merged. Human curation review required (SPEC §5).