map? treated ANY struct as a map, so (map? 'sym), (map? \a), and
(map? (random-uuid)) were all true; coll? had the same wart. Meanwhile both
were FALSE for sorted maps (and coll? for sorted sets and records), which are
collections in Clojure. Now: a map is a plain struct literal, a phm, a sorted
map, or a record; coll? additionally includes sorted sets. Tagged structs
(anything with :jolt/type) are values.
The loose-map? dependents (destructure's clause ordering, defn's attr-map
guard) already guarded with symbol? first, so nothing relied on the wart —
full gate green, and the suite gained: 4074 -> 4081 pass / 72 clean files
(map_qmark/coll_qmark assertions now correct); baselines raised. 22 new
strictness spec cases.
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