Trace the eye reading to FR-CULL-8a and the chip to FR-CULL-13

The register grew both clauses the same day this was built: FR-CULL-8a is
the per-face state the reading is, and FR-CULL-13 is the rule that a
signal is shown and filtered and never writes a judgement. The tags,
faces.md §17 and catalog.md now say which is which; FR-CULL-8a records
what of it is built, and that its third model is under the InsightFace
grant by the same decision as the pair.

ui/dr-ui/src/identity.rs

@@ -101,7 +101,7 @@ pub struct FaceCell {
     /// of its raw embedding (`dr_face::MIN_GALLERY_QUALITY`). `None` for a
     /// face indexed before it was kept.
     pub quality: Option<f32>,
-    /// TRACES: FR-CULL-13
+    /// TRACES: FR-CULL-8a | FR-CULL-13
     /// What the eyes are doing, where they were read.
     pub eyes: Option<dr_face::EyeReading>,
 }