Bridge: Expose clojure.lang.MapEntry/create as 2-vector ctor

Cross-dialect tests in jank-lang/clojure-test-suite (key.cljc,
val.cljc, ...) build a map-entry under the :default arm via
(clojure.lang.MapEntry/create k v). mino's map entries are
2-element vectors so the data shape already matches; only the
constructor namespace was missing. Define a clojure.lang.MapEntry
namespace with create alongside the existing JVM bridges.

Internal suite 1476 / 7071 / 0. External suite errors 10 -> 8.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: leifericf

CHANGELOG.md

@@ -1,5 +1,31 @@
 # Changelog
 
+## v0.100.21
+
+### Bridge: Expose `clojure.lang.MapEntry/create` as a 2-vector ctor
+
+Cross-dialect tests in `jank-lang/clojure-test-suite` (e.g. `key.cljc`,
+`val.cljc`) build a map-entry literal under their `:default` arm via
+`(clojure.lang.MapEntry/create k v)`. mino's map entries are 2-element
+vectors, so the data shape already matches — only the constructor
+namespace was missing. Define `clojure.lang.MapEntry/create` in
+`src/core.clj` next to the existing `clojure.lang.IPending` and
+`clojure.lang.BigInt` bridges:
+
+```clj
+(ns clojure.lang.MapEntry)
+(defn create [k v] [k v])
+(in-ns 'clojure.core)
+```
+
+This unblocks the affected `is` lines in `key.cljc` and `val.cljc`
+(previously errored on namespace lookup), surfacing the remaining
+`(p/thrown? (key [1 2]))` semantic gaps that need a distinct
+`MapEntry` value type to reject non-entry 2-vectors. That type
+addition is deliberately deferred — the bridge is the smaller fix
+that stands on its own. Internal suite 1476 / 7071 / 0; external
+suite aggregate 5252 → 5278 assertions, errors 10 → 8.
+
 ## v0.100.20
 
 ### Build: Make `make` clean on gcc-11 (Ubuntu 22.04)

src/core.clj

@@ -3184,6 +3184,14 @@
 (def clojure.lang.IPending :future)
 (def clojure.lang.BigInt :bigint)
 
+;; Bridge `clojure.lang.MapEntry/create` to a 2-vector constructor.
+;; Cross-dialect tests use it under `:default` to build a map entry
+;; literal; mino represents map entries as 2-vectors and `key`/`val`
+;; already accept that shape, so the only missing piece is the ctor.
+(ns clojure.lang.MapEntry)
+(defn create [k v] [k v])
+(in-ns 'clojure.core)
+
 ;; In Clojure JVM the primed arithmetic forms (`+'`, `-'`, `*'`, `inc'`,
 ;; `dec'`) auto-promote to BigInt rather than overflowing in long; the
 ;; unprimed forms throw on overflow. mino's unprimed forms already

src/mino.h

@@ -27,7 +27,7 @@
  */
 #define MINO_VERSION_MAJOR 0
 #define MINO_VERSION_MINOR 100
-#define MINO_VERSION_PATCH 20
+#define MINO_VERSION_PATCH 21
 
 /*
  * Human-readable version string of the *linked* runtime, e.g. "0.48.0".