_get_platform_tools correctly subtracts agent.disabled_toolsets, but
_with_session_toolsets unions the client-surface (and profile-role)
toolsets back in afterwards — so disabled_toolsets: [project] was a
no-op on desktop/TUI, the only surfaces where the toolset exists, and
the agent kept hijacking the word "project" (#54433).
The fold-in now applies the same subtraction via _load_disabled_toolsets,
keeping desktop_ui (the client own control surface, not a model
toolset). Covers both the focus/coding posture path and the configured
fallback.
Fixes#54433
Co-authored-by: Hermes Agent <agent@hermes.local>
903a57c540