Fox 2026-04-29 (Clark Kent / Superman query): the verifier flagged a
quoted span as unverified and the sidecar diagnosed it as 'paraphrase'
with token_coverage=1.0. Investigation showed the source actually said
`Clark Joseph Kent (middle name is also Jerome according to some
versions) is a fictional character...` and the model elided the
parenthetical aside, quoting `Clark Joseph Kent is a fictional
character...`. Every word in source, but the sequence has a 60-char
gap where the aside was. Distinct failure mode from real paraphrase
(token reordering) and trailing_artifact (model APPENDS).
Sidecar refinement, no verifier change. The binary verifier discipline
(memory rule `feedback_verifier_no_diagnostics`) holds — quote strategy
is still verbatim-only; soft signal stays in the inspect verb.
Algorithm walks every `(` in base. For each open paren at position P:
the longest k where base[:P] ends with span[:k] is the model's prefix;
the span tail (≥20 chars) must then match the source after the close
paren. First paren that satisfies both checks wins.
CLI human-render shows `matched: N prefix + M suffix chars
(parenthetical aside dropped)` plus the dropped_aside text so an
operator can decide at a glance whether the elision is benign.
Live record now reads:
[1] interior_elision
matched: 17 prefix + 138 suffix chars (parenthetical aside dropped)
dropped_aside: middle name is also jerome according to some versions
439 tests pass (sidecar +2, full suite still green).
russell@unturf.com
1e8d2d2dba