Fix arg evaluation order + host interop gaps so reitit/selmer/honeysql run

Shaking the ring-app example's real library stack out against jolt surfaced a
batch of divergences from JVM Clojure, the biggest being evaluation order.

backend_scheme: call and recur arguments were emitted as bare Scheme operands,
so Chez's unspecified (right-to-left) order won out. Clojure evaluates left to
right, which selmer's reader loop relies on: (recur (add-node ... rdr) (read-char
rdr)) consumed a char early and dropped the first chars of every {{tag}}. Bind
operands to fresh temps in a let* (only when two or more can have side effects,
so hot calls over locals/consts stay un-wrapped). emit-ordered already did this
for collection literals; generalize it.

host-contract: syntax-quote now resolves the alias part of a qualified symbol
(impl/foo -> clojure.tools.logging.impl/foo) instead of leaving it bare, which
limped along via short-name matching until two loaded namespaces (reitit.impl,
clojure.tools.logging.impl) shared the short name and it broke.

collections: key-hash masks with bitwise-and, not fxand — jolt-hash is set!-
decorated per type (records return their own hash) and Chez's equal-hash can be a
bignum, so a key's hash isn't always a fixnum.

seq: even?/odd? handle bignums (JVM accepts any integer; the fxand crashed).

records: Keyword/Symbol .sym/.getName/.toString (honeysql's :clj branch reads
(.sym k)); Throwable .getMessage/.toString over a Chez condition.

host-static: __register-class-ctor!/__register-class-statics! so a host shim
(reitit.trie-jolt) can mirror a Java class.

natives-str: String.intern returns the string.

sqlite: jdbc.core fetch/fetch-one kebab-case column keys (the jolt-lang/db
convention; created_at -> :created-at).

io: a relative io/file path resolves against JOLT_PWD (the user's cwd), not the
repo root the launcher cd'd to — matches JVM cwd semantics, so config.edn loads.

cli: render an uncaught jolt throw (ex-info message + ex-data, or a condition)
instead of Chez's opaque "non-condition value" dump.

host/chez/cli.ss

@@ -30,16 +30,41 @@
 ;; A project's resolved deps roots are prepended to these by jolt.main.
 (set-source-roots! (list "jolt-core" "src/jolt"))
 
-(cond
-  ;; -e EXPR — evaluate one expression and print it (blank for nil). Wrapped in
-  ;; (do …) so a multi-form string evaluates every form and returns the last.
-  ((and (= (length cli-args) 2) (string=? (car cli-args) "-e"))
-   (let ((result (jolt-final-str
-                   (jolt-compile-eval (string-append "(do " (cadr cli-args) ")") "user"))))
-     (unless (string=? result "")
-       (display result) (newline))))
-  ;; otherwise dispatch the argv through jolt.main/-main
-  (else
-   (load-namespace "jolt.main")
-   (let ((mainv (var-deref "jolt.main" "-main")))
-     (apply jolt-invoke mainv cli-args))))
+;; Render an uncaught jolt throw (any value, not just a Chez condition) to stderr
+;; and exit non-zero, instead of Chez's opaque "non-condition value" dump. An
+;; ex-info shows its message + ex-data; anything else is pr-str'd.
+(define (jolt-report-uncaught v)
+  (let ((port (current-error-port)))
+    (if (and (jolt=2 (jolt-get v jolt-kw-ex-type jolt-nil) jolt-kw-ex-info))
+        (begin
+          (display "Unhandled exception: " port)
+          (display (jolt-str-render-one (jolt-get v jolt-kw-message jolt-nil)) port)
+          (newline port)
+          (let ((data (jolt-get v jolt-kw-data jolt-nil)))
+            (unless (jolt-nil? data)
+              (display "  ex-data: " port) (display (jolt-pr-str data) port) (newline port)))
+          (let ((cause (jolt-get v jolt-kw-cause jolt-nil)))
+            (when (condition? cause)
+              (display "  cause: " port)
+              (display (with-output-to-string (lambda () (display-condition cause))) port)
+              (newline port))))
+        (begin
+          (display "Unhandled exception: " port)
+          (display (if (condition? v) (with-output-to-string (lambda () (display-condition v))) (jolt-pr-str v)) port)
+          (newline port)))
+    (exit 1)))
+
+(guard (v (#t (jolt-report-uncaught v)))
+  (cond
+    ;; -e EXPR — evaluate one expression and print it (blank for nil). Wrapped in
+    ;; (do …) so a multi-form string evaluates every form and returns the last.
+    ((and (= (length cli-args) 2) (string=? (car cli-args) "-e"))
+     (let ((result (jolt-final-str
+                     (jolt-compile-eval (string-append "(do " (cadr cli-args) ")") "user"))))
+       (unless (string=? result "")
+         (display result) (newline))))
+    ;; otherwise dispatch the argv through jolt.main/-main
+    (else
+     (load-namespace "jolt.main")
+     (let ((mainv (var-deref "jolt.main" "-main")))
+       (apply jolt-invoke mainv cli-args)))))