Merge sx-tools: test coverage + bug fixes + Playwright fixes

- 7 new test files (~268 tests): stdlib, adapter-html, adapter-dom,
  boot-helpers, page-helpers, layout, tw-layout
- Fix component-pure? transitive scan, render-target crash on unknown
  components, &rest param binding (String vs Symbol), swap! extra args
- Fix 5 Playwright marshes tests: timing + test logic
- 2522/2522 OCaml tests, 173/173 Playwright tests

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

# Conflicts:
#	shared/static/wasm/sx/orchestration.sxbc
#	shared/static/wasm/sx_browser.bc.js
#	shared/static/wasm/sx_browser.bc.wasm.js
#	sx/sx/not-found.sx
#	tests/playwright/isomorphic.spec.js

web/orchestration.sx

@@ -553,9 +553,7 @@
         (and settle-expr (not (empty? settle-expr)))
         (let
           ((exprs (sx-parse settle-expr)))
-          (for-each
-            (fn (expr) (eval-expr expr (env-extend (dict))))
-            exprs))))))
+          (for-each (fn (expr) (cek-eval expr)) exprs))))))
 
 (define
   activate-scripts
@@ -1558,12 +1556,9 @@
         (pathname (url-pathname url)))
       (when
         target
-        (if
-          (try-client-route pathname target-sel)
-          (browser-scroll-to 0 scrollY)
-          (let
-            ((headers (build-request-headers target "GET" url)))
-            (fetch-and-restore target url headers scrollY)))))))
+        (let
+          ((headers (dict "SX-Request" "true")))
+          (fetch-and-restore target url headers scrollY))))))
 
 (define
   engine-init