Three independent CI-unblockers grouped to keep history clean:
1. op-host-desktop/chat_orchestrator.rs — add `visual_ref_enabled: false`
to the DesignRequest literal so the workspace builds after S4 added
the field. Same stub-plumbing pattern as the S3b-2 `concurrency`,
S3b-4 `append_context`, S3c `validation_enabled` additions. Real
intent-gate routing is task #27.
2. op-editor-core/render_backend.rs::fill_round_rect_radial_gradient —
#[allow(clippy::too_many_arguments)] on the trait default. The
radial-gradient hook carries (rect, radius, stops, cx_frac, cy_frac,
radius_frac, opacity) per the TS pen-renderer contract; that's the
data shape, not refactorable without splitting the trait.
3. cargo fmt --all catch-up on 6 other files (op-editor-core /
op-editor-ui / op-host-native) that pre-dated this branch and were
never run through rustfmt. Pure whitespace, no semantic change. Lets
`cargo fmt --all -- --check` pass workspace-wide.
`cargo clippy --workspace --all-targets -- -D warnings` + `cargo build
--workspace` + `cargo fmt --all -- --check` all clean. Tests across
op-orchestrator (574+1) / op-design-lint (149) / op-mcp (144) /
op-editor-core (273) / op-host-desktop (96) all green.
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