Restore original compiler.sx formatting, add compile-match cleanly

The SX pretty-printer reformatted the entire compiler — different
indentation, removed comments, changed dict literals. This broke
JIT compilation for render-to-html and other functions that were
previously working.

Restore the exact original formatting from before the match commits
and add compile-match as a clean insertion (no reformatting). The
compiler's own dispatch stays as cond (safe with JIT).

1166 passed, 0 failed.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/compiler.sx

@@ -218,8 +218,6 @@
             (compile-cond em args scope tail?)
             (= name "case")
             (compile-case em args scope tail?)
-            (= name "match")
-            (compile-match em args scope tail?)
             (= name "->")
             (compile-thread em args scope tail?)
             (= name "defcomp")
@@ -244,10 +242,14 @@
             (emit-op em 2)
             (= name "defeffect")
             (emit-op em 2)
+            (= name "defisland")
+            (compile-defcomp em args scope)
             (= name "quasiquote")
             (compile-quasiquote em (first args) scope)
             (= name "letrec")
             (compile-letrec em args scope tail?)
+            (= name "match")
+            (compile-match em args scope tail?)
             :else (compile-call em head args scope tail?)))))))
 
 (define