sx-tools: WASM kernel updates, TW/CSSX rework, content refresh, new debugging tools

Build tooling: updated OCaml bootstrapper, compile-modules, bundle.sh, sx-build-all.
WASM browser: rebuilt sx_browser.bc.js/wasm, sx-platform-2.js, .sxbc bytecode files.
CSSX/Tailwind: reworked cssx.sx templates and tw-layout, added tw-type support.
Content: refreshed essays, plans, geography, reactive islands, docs, demos, handlers.
New tools: bisect_sxbc.sh, test-spa.js, render-trace.sx, morph playwright spec.
Tests: added test-match.sx, test-examples.sx, updated test-tw.sx and web tests.

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

shared/static/wasm/sx/adapter-sx.sx

@@ -437,17 +437,9 @@
         (let
           ((f (trampoline (eval-expr (first args) env)))
             (coll (trampoline (eval-expr (nth args 1) env))))
-          (map
-            (fn
-              (item)
-              (if
-                (lambda? f)
-                (let
-                  ((local (env-merge (lambda-closure f) env)))
-                  (env-bind! local (first (lambda-params f)) item)
-                  (aser (lambda-body f) local))
-                (cek-call f (list item))))
-            coll))
+          (let
+            ((results (map (fn (item) (if (lambda? f) (let ((local (env-extend (lambda-closure f)))) (env-bind! local (first (lambda-params f)) item) (aser (lambda-body f) local)) (cek-call f (list item)))) coll)))
+            (aser-fragment results env)))
         (= name "map-indexed")
         (let
           ((f (trampoline (eval-expr (first args) env)))