Chez parity: missing native core fns + ns runtime fns (jolt-cf1q.7)

Native Chez shims for clojure.core fns that live in the Janet seed but had none
on the zero-Janet spine (they resolved to nil -> "not a fn"):

- host/chez/natives-parity.ss: hash / hash-combine / hash-ordered-coll /
  hash-unordered-coll (24-bit masked like core_extra), transient?, rseq (vectors +
  sorted colls), cat (transducer).
- jolt-invoke now dispatches a TRANSIENT vec/map/set as a fn (callable on the JVM):
  ((transient [10 20 30]) 1) -> 20.
- ns.ss: ns-resolve, ns-imports, remove-ns, intern, alias, ns-unalias, refer,
  ns-refers, refer-clojure, alter-meta!, reset-meta!, and a real ns-aliases (was a
  stub returning {}).
- runtime (require ...)/(use ...) now register :as/:refer into the Chez ns tables
  (was a no-op). The Chez analyzer already pre-registers at analyze time, but when
  the JANET analyzer compiled the form (prelude path) the Chez tables stayed empty,
  so ns-aliases/ns-resolve over an alias diverged — this fixes both paths.

Seed unchanged (overlay doesn't reference these at mint time). zero-Janet corpus
2567->2600, prelude 2557->2590, 0 new divergences on either; Janet gate + JVM cert
green. Filed jolt-vgrp for the pre-existing var-get-of-scalar-native-op quirk.

jolt-cf1q.7

host/chez/rt.ss

@@ -320,6 +320,11 @@
 ;; clojure.math ns. Self-contained (only def-var! + Chez math), order-independent.
 (load "host/chez/math.ss")
 
+;; parity shims (jolt-cf1q.7): native clojure.core fns missing on the zero-Janet
+;; spine (hash family / rseq / cat / transient?). After host-table.ss (sorted),
+;; transients.ss, values.ss (jolt-hash), seq.ss.
+(load "host/chez/natives-parity.ss")
+
 ;; syntax-quote form builders (jolt-r9lm, inc6b): __sqcat/__sqvec/__sqmap/__sqset/
 ;; __sq1, def-var!'d into clojure.core. A cross-compiled macro expander (analyzer
 ;; on Chez, inc6b) calls these to build its expansion as reader forms. Needs the