driver.janet now compiles IR via the portable Clojure emitter (jolt.backend-
scheme) instead of emit.janet, at every entry point (compile-program, emit-core-
prelude, eval-e-with-prelude). The emitter is loaded into the ctx and called like
the analyzer. emit.janet stays only as the emit/program string-wrapper until
program assembly ports to Clojure with compile-from-source; its emit fn is no
longer called anywhere (emit-test's truthy-elision helper now uses the new
d/scheme-emit too). This takes the IR->Scheme emitter off Janet.
A form-by-form diff of the two emitters over the whole prelude found one gap:
emit-const missed char literals because a :jolt/type-tagged struct is not a plain
jolt map? — switched to the form-char? host contract. Diff then 0.
jolt-chez prelude fingerprint now includes backend_scheme.clj + host_iface.janet.
Gate: full prelude corpus 2280/2494, NEW divergence 0, same buckets as the Phase-2
emit.janet floor (36 emit-fail, 170 crash) — the Clojure emitter is byte-for-
behavior identical. emit-test 331/331 (now via the Clojure emitter), emit-parity
58/58. jolt-duot.
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