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/boot.sx

@@ -432,15 +432,6 @@
       (run-post-render-hooks)
       (flush-collected-styles)
       (set-timeout (fn () (process-elements nil)) 0)
-      (dom-listen
-        (dom-window)
-        "popstate"
-        (fn
-          (e)
-          (let
-            ((state (host-get e "state"))
-              (scrollY (if state (or (dict-get state "scrollY") 0) 0)))
-            (handle-popstate scrollY))))
       (dom-set-attr
         (host-get (dom-document) "documentElement")
         "data-sx-ready"