Shared tools.analyzer child listing and preorder traversal.
Delegates to clojure.tools.analyzer.ast so all callers stay aligned.

Native typing for clojure.lang.Numbers static calls and selected clojure.core invokes.
Toolchain reference (Clojure 1.11.1, tools.analyzer.jvm 1.2.3):
- Numbers: inc/dec argc 1; add/multiply argc 2 (n-ary +/* is nested static calls);
  minus argc 1 or 2; isPos/isNeg argc 1 -> bool.
- Invoke (native-fn-dict): (+) (+ x) (*) (* x); str; format; even? odd?; inc when not inlined.
- Literal (+ 1 2 3) never yields top-level :invoke; test 3-arg + with ((resolve '+) 1 2 3).

Shared registry of clojure.core predicates that Skeptic can type.
Two consumers:
  - native_fns: each predicate is typed Dyn -> Bool when invoked
  - bridge admission: (s/pred f) and Malli's bare-predicate-as-schema
    both convert to the predicate's witness type.

Coerce a Clojure value to a JSON-safe form for the --debug wire-tap.
The only job is to make the value printable through clojure.data.json.
No type dispatch, no projection, no filtering. The value is printed by
Clojure's own printer under locked bindings — the string it produces is
what ships.