Real transient correctness gaps surfaced by the clojure-test-suite:
- Transients are now invokable for read-only lookup like their persistent forms:
((transient v) i), ((transient m) k [default]), (:k (transient m)),
((transient s) x). jolt-invoke/coll-lookup gained a transient branch
(transient-lookup) that indexes :arr / canon-keyed :tbl. Added phm/canon as a
public canonicalizer so collection keys compare by value here too.
- assoc! accepts an ODD arg count (a missing final value is nil), unlike assoc —
core-assoc! now uses nil-safe get for the value instead of erroring.
- Using a transient after persistent! (or a second persistent!, or pop! on an
empty transient vector) now throws, via a :jolt/persistent invalidation flag
checked by the mutating ops. Catches the classic transient footgun.
spec: transients-spec gains invokable-lookup (7), assoc!-odd-args (4),
invalidation (4). clojure-test-suite pass 1704->1719.
Remaining transient fails are accepted lenient divergences (jolt doesn't throw
on bad-shape conj!/assoc!/pop! of wrong-typed args; nil set elements). jpm test green.
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