definterface returns the name (not a var); ns-imports returns java.lang defaults

definterface now expands to (do (def name {}) 'name) so (var? (definterface ...))
is false, matching the JVM where it yields the interface Class. ns-imports returns
the 96 auto-imported java.lang classes (short symbol -> canonical name) so
(count (ns-imports 'user)) is 96. Re-minted for the macro change. Corpus 2718->2720.

host/chez/ns.ss

@@ -158,8 +158,36 @@
       (hashtable-keys ns-refer-table))
     m))
 
-;; ns-imports: Chez has no Java class imports -> always the empty map.
-(define (jolt-ns-imports . _) (jolt-hash-map))
+;; ns-imports: clojure.core auto-imports the 96 public java.lang classes into
+;; every ns. jolt has no classloader, but returns that map (short symbol ->
+;; canonical class-name token) so (count (ns-imports 'user)) = 96 like the JVM.
+(define jolt-default-import-names
+  '("AbstractMethodError" "Appendable" "ArithmeticException" "ArrayIndexOutOfBoundsException"
+    "ArrayStoreException" "AssertionError" "BigDecimal" "BigInteger" "Boolean" "Byte"
+    "Callable" "CharSequence" "Character" "Class" "ClassCastException" "ClassCircularityError"
+    "ClassFormatError" "ClassLoader" "ClassNotFoundException" "CloneNotSupportedException"
+    "Cloneable" "Comparable" "Compiler" "Deprecated" "Double" "Enum"
+    "EnumConstantNotPresentException" "Error" "Exception" "ExceptionInInitializerError" "Float"
+    "IllegalAccessError" "IllegalAccessException" "IllegalArgumentException"
+    "IllegalMonitorStateException" "IllegalStateException" "IllegalThreadStateException"
+    "IncompatibleClassChangeError" "IndexOutOfBoundsException" "InheritableThreadLocal"
+    "InstantiationError" "InstantiationException" "Integer" "InternalError" "InterruptedException"
+    "Iterable" "LinkageError" "Long" "Math" "NegativeArraySizeException" "NoClassDefFoundError"
+    "NoSuchFieldError" "NoSuchFieldException" "NoSuchMethodError" "NoSuchMethodException"
+    "NullPointerException" "Number" "NumberFormatException" "Object" "OutOfMemoryError" "Override"
+    "Package" "Process" "ProcessBuilder" "Readable" "Runnable" "Runtime" "RuntimeException"
+    "RuntimePermission" "SecurityException" "SecurityManager" "Short" "StackOverflowError"
+    "StackTraceElement" "StrictMath" "String" "StringBuffer" "StringBuilder"
+    "StringIndexOutOfBoundsException" "SuppressWarnings" "System" "Thread" "Thread$State"
+    "Thread$UncaughtExceptionHandler" "ThreadDeath" "ThreadGroup" "ThreadLocal" "Throwable"
+    "TypeNotPresentException" "UnknownError" "UnsatisfiedLinkError" "UnsupportedClassVersionError"
+    "UnsupportedOperationException" "VerifyError" "VirtualMachineError" "Void"))
+(define jolt-default-imports
+  (let loop ((ns jolt-default-import-names) (m (jolt-hash-map)))
+    (if (null? ns) m
+        (loop (cdr ns)
+              (jolt-assoc m (jolt-symbol #f (car ns)) (string-append "java.lang." (car ns)))))))
+(define (jolt-ns-imports . _) jolt-default-imports)
 
 ;; resolve: an unqualified symbol resolves in the current ns then clojure.core; a
 ;; qualified one in its own ns. Returns the var iff genuinely defined, else nil —

host/chez/run-corpus.ss

@@ -11,7 +11,7 @@
 ;; reset between cases so there is no leakage — same isolation a fresh process gives.
 ;;
 ;;   chez --script host/chez/run-corpus.ss
-;;   JOLT_CHEZ_ZJ_FLOOR=N   override the regression floor (default 2718)
+;;   JOLT_CHEZ_ZJ_FLOOR=N   override the regression floor (default 2720)
 ;;   JOLT_CORPUS_LIMIT=N    every-Nth stride (fast iteration; floor drops to 0)
 ;;   JOLT_DUMP_CRASH_LABELS=1   list crash + allowlisted labels
 (import (chezscheme))
@@ -86,11 +86,11 @@
 ;; transients/atoms/Infinity. These DIVERGE but are tolerated; the gate fails only on
 ;; a NEW (unlisted) divergence or a drop below the floor.
 (define known-fail-labels
-  '("definterface defines" "getMessage on a thrown string"
+  '("getMessage on a thrown string"
     "type of record" "chunked-seq? always false"
     "^Type tag on var" "symbol hint -> :tag"
     "lists extended type" "seq of tags"
-    "close on throw" "macroexpand-1" "ns-imports empty user"
+    "close on throw" "macroexpand-1"
     "bean is the map" "proxy resolves nil"
     "*in* is bound" "*in* bound"
     "bigdec" "bigdec int M" "bigdec suffix M"
@@ -196,7 +196,7 @@
 
 ;; Regression floor: fail on any NEW divergence or if pass drops below the floor.
 (define base-floor (let ((s (getenv "JOLT_CHEZ_ZJ_FLOOR")))
-                     (if s (string->number s) 2718)))
+                     (if s (string->number s) 2720)))
 (define floor (if limit 0 base-floor))
 (when (or (> (length diverged) 0) (< pass floor))
   (printf "REGRESSION: pass ~a < floor ~a or ~a new divergence(s)\n"

host/chez/seed/prelude.ss

@@ -908,7 +908,7 @@
   (mark-macro! "clojure.core" "proxy"))
 (guard (e (#t #f))
   (def-var! "clojure.core" "definterface"
-    (lambda (name-sym . body) (let fnrec484 ((name-sym name-sym) (body (list->cseq body))) (jolt-invoke (var-deref "clojure.core" "__sqcat") (jolt-invoke (var-deref "clojure.core" "__sq1") (jolt-symbol #f "def")) (jolt-invoke (var-deref "clojure.core" "__sq1") name-sym) (jolt-invoke (var-deref "clojure.core" "__sq1") (jolt-invoke (var-deref "clojure.core" "__sqmap") ))))))
+    (lambda (name-sym . body) (let fnrec484 ((name-sym name-sym) (body (list->cseq body))) (jolt-invoke (var-deref "clojure.core" "__sqcat") (jolt-invoke (var-deref "clojure.core" "__sq1") (jolt-symbol #f "do")) (jolt-invoke (var-deref "clojure.core" "__sq1") (jolt-invoke (var-deref "clojure.core" "__sqcat") (jolt-invoke (var-deref "clojure.core" "__sq1") (jolt-symbol #f "def")) (jolt-invoke (var-deref "clojure.core" "__sq1") name-sym) (jolt-invoke (var-deref "clojure.core" "__sq1") (jolt-invoke (var-deref "clojure.core" "__sqmap") )))) (jolt-invoke (var-deref "clojure.core" "__sq1") (jolt-invoke (var-deref "clojure.core" "__sqcat") (jolt-invoke (var-deref "clojure.core" "__sq1") (jolt-symbol #f "quote")) (jolt-invoke (var-deref "clojure.core" "__sq1") name-sym)))))))
   (mark-macro! "clojure.core" "definterface"))
 (guard (e (#t #f))
   (def-var! "clojure.core" "reify"