Detail A 5.5 dimension witness lands on no geometry (GRM-04) #1963

Observed

GRM-04_drive_plate.step (local file, not a repo fixture), default draftwright CLI run. In Detail A (DETAIL A — PARTIAL PROFILE — SCALE 4:1), the vertical 5.5 dimension's upper extension line is level with the top of the detail geometry. Its lower extension line ends well below the geometry, at the height of the view title, where there is no edge. The dimension does not measure any feature visible in the detail.

Sidecar layout record for the detail: kind: prismatic-steps, source view front, extent z ∈ [-4.0, 2.74], x ∈ [2.14, 3.0], physical support points (3.0, -3.708, -1.5) and (3.0, -3.864, 1.5). The sheet also has a flat callout 5.5 A/F (reported under feature_leader_crossing). I haven't confirmed whether this detail dimension is that across-flats size, or a step height, projected into a detail that shows only part of its extent.

Lint did not catch it

The sidecar reports passed: true with no fidelity findings. A witness point that lies on no drawn edge in its own view went undetected, so this is a lint gap alongside the rendering defect.

To check

• Which requirement or occurrence owns the 5.5 in detail_a, and whether both of its measured supports lie inside the detail's extent (PARTIAL PROFILE suggests one does not).
• Whether a detail should dimension a feature only when both of its supports are visible in it.