Fixed with one predicate, `reads_as_suffix`: a suffix piece, or the trailing roman numeral assign's fork takes — and that fork is now `_vocab.is_trailing_numeral_suffix`, lifted out of assign so the two stages share its definition instead of the reserve carrying a copy (the `_ROMAN` pattern moved with it; the regex-sync pin follows it). The reserve counts a piece out when it reads as a suffix, and the join declines the piece it would take when it does — the same decline it already made for a marker. The mirror is assign's fork condition for condition: the numeral is the LAST piece and not the first name piece — not "the piece before it is not a title", which the first draft wrote and the design-docs review falsified, `jr` being title vocabulary as well as a suffix, so `abdul Smith Jr V` lost its family exactly as before — and the piece before it is read as the join would leave it, the joined pair's first token being the bound word (`abdul J. V`, the design-docs review's other find, otherwise suppressed the fork for the reserve alone and read given 'abdul J.', family ''; the reserve now declines, and assign, seeing the unjoined pieces, reads given 'abdul', middle 'J.', family 'V', exactly as it reads `John J. V`). Two more the code review found: assign drops the group-flagged credential pieces (the Ph. D. merge) from its walk at any position before the trailing peel, so a numeral can be last in that walk without being the last piece — `abdul Smith V Ph. D.` lost its family until "last" and "the piece before" were read over the pieces assign keeps — pinned at the piece level only, because a trailing split credential is the shape the 1.4.0 ledger's `[[never]]` entry refuses to explain any diff on, and v1's reading of that name carried the #401 family loss; the example stayed out of the rules corpus rather than the never-entry being narrowed for one bound-word spelling; and the post-comma walk has no numeral fork at all (a trailing numeral there is read by a lenient last-of-two rule, or as a middle initial with a third part), so a mirror applied under LENIENT declined `Berg, abdul V` and `Berg, abdul V, jr` against every baseline with nothing classifying it — the numeral branch is scoped to STRICT, and after a family comma the reserve counts suffix pieces alone, as it always did. So `abdul Smith V Jr` still joins and assign reads family 'V', and `abdul V Smith` still joins an initial, which is a name word. What is NOT mirrored: S2's other positional fork, the bare ambiguous acronym. Where the join leaves two pieces no family is lost — `abdul Smith Ma` reads family 'Ma' where `John Smith Ma` reads suffix 'Ma', assign keeping the acronym as the family of a two-piece name — but with a suffix word between, the join leaves three, assign peels the acronym and then the suffix, and the family is gone: `abdul Smith Jr Ma` reads given 'abdul Smith', family '', suffix 'Jr, Ma' where `John Smith Jr Ma` keeps family 'Smith'. Pre-existing and byte-identical before this fix, and the whole of what remains of #401's shape on the main walk: a review sweep of the STRICT path found 132 family-losing shapes, every one ending in a bare ambiguous acronym. Left for #425 rather than widened into here, and framed there as sharing assign's peel over a post-join VIEW rather than mirroring a second fork by hand: with a view the count is the view's length, the remap and the first-piece carve-out fall away, and the other two sites that stop at a suffix with the same initial veto — P2's chain and M2's walk, which take a trailing numeral the same way (#424) — would ask the question once. The walk was also computed once rather than per piece after review measured the per-piece rebuild as quadratic (13x growth for 4x the input against the benchmark's 6x bound, on a shape no benchmark unit led with); `bound_given` is that unit now. Readings: `abdul Smith V` → given 'abdul', family 'Smith', suffix 'V', the SUFFIX_OR_NAME report unchanged; `abdul Jr Smith Berg` → given 'abdul', middle 'Jr Smith', where `John Jr Smith Berg` puts it; `abdul Ph. D. Smith Berg` → given 'abdul', middle 'Smith', suffix 'Ph. D.' — the SUFFIX field is 1.4.0's again, the given is not: v1's fix_phd extracted the credential before parsing and the join then took 'Smith', reading given 'abdul Smith' — which the issue reports correctly, and then mislabels its own proposed reading as "1.4.0's reading restored". The decline is chosen over reaching past the credential for the next name word, because P5 joins "the word after it": a join that skipped a suffix would read a shape no one writes as if the suffix were not there, and the marker decline already sets the precedent that the join takes the word after it or nothing. A judgement, recorded as one; `Berg, abdul Jr Smith` → suffix 'Jr'; and `Sir abdul V`, the shape #369's licence had widened #401 onto, reads suffix 'V'. #369's licence-local suffix clause is retired, subsumed by the general decline. `bound_given_join_sees_only_the_surviving_name` re-pins to given 'abd', middle 'Jr Smith', as the #418 entry anticipated. No differential corpus name has either shape — measured: the gate was byte-identical at all three baselines before the rules.md examples went in — so the examples carry the shapes into the rules corpus, where they move against every baseline and are classified there. The 1.4.0 `fix(#401)` rule lists three fields where the 2.x rules list two, because 1.4.0 did not even read the V as a suffix; a draft with two fields handed the name to the fields-only suffix-routing catch-all, whose capped printout hid it, and this entry briefly called #401 a 2.0 regression on that inert measurement — the design-docs review caught it. EXPLAINED NOTHING is not byte-identical.
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