SPA navigation, page component refactors, WASM rebuild

Refactor page components (docs, examples, specs, reference, layouts)
and adapters (adapter-sx, boot-helpers, orchestration) across sx/ and
web/ directories. Add Playwright SPA navigation tests. Rebuild WASM
kernel with updated bytecode. Add OCaml primitives for request handling.

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

shared/static/wasm/sx/boot-helpers.sx

@@ -508,18 +508,17 @@
                   boost-el
                   (let
                     ((attr (dom-get-attr boost-el "sx-boost")))
-                    (if (and attr (not (= attr "true"))) attr "#main-panel"))
-                  "#main-panel")))
+                    (if (and attr (not (= attr "true"))) attr "#sx-content"))
+                  "#sx-content")))
             (if
               (try-client-route (url-pathname href) target-sel)
               (do (browser-push-state nil "" href) (browser-scroll-to 0 0))
               (do
-                (when
-                  (not (dom-has-attr? link "sx-get"))
-                  (dom-set-attr link "sx-get" href))
-                (when
-                  (not (dom-has-attr? link "sx-push-url"))
-                  (dom-set-attr link "sx-push-url" "true"))
+                (log-info (str "sx:route server fetch " href))
+                (dom-set-attr link "sx-get" href)
+                (dom-set-attr link "sx-target" target-sel)
+                (dom-set-attr link "sx-select" target-sel)
+                (dom-set-attr link "sx-push-url" "true")
                 (execute-request link nil nil)))))))))
 
 (define sw-post-message (fn (msg) nil))
@@ -604,7 +603,7 @@
         (fn
           (expr)
           (let
-            ((result (render-to-dom expr (get-render-env nil) nil)))
+            ((result (try-catch (fn () (render-to-dom expr (get-render-env nil) nil)) (fn (err) (log-error (str "sx-render: " err)) (let ((el (dom-create-element "div" nil))) (dom-set-attr el "class" "sx-render-error") (dom-set-attr el "style" "color:red;font-size:0.875rem;padding:0.5rem;border:1px solid red;border-radius:4px;margin:0.25rem 0;") (dom-set-text-content el (str "Render error: " err)) el)))))
             (when result (dom-append frag result))))
         exprs)
       (scope-pop! "sx-render-markers")
@@ -630,7 +629,15 @@
                 (and text (> (len text) 0))
                 (let
                   ((exprs (sx-parse text)))
-                  (for-each (fn (expr) (cek-eval expr)) exprs))))))
+                  (for-each
+                    (fn
+                      (expr)
+                      (try-catch
+                        (fn () (cek-eval expr))
+                        (fn
+                          (err)
+                          (log-error (str "sx-process-scripts: " err)))))
+                    exprs))))))
         scripts))))
 
 (define
@@ -641,7 +648,10 @@
       selector
       (let
         ((selected (dom-query container selector)))
-        (if selected selected (children-to-fragment container)))
+        (if
+          selected
+          (children-to-fragment selected)
+          (children-to-fragment container)))
       (children-to-fragment container))))
 
 (define

shared/static/wasm/sx/orchestration.sx

@@ -282,9 +282,11 @@
                 (fn
                   (t oob (s :as string))
                   (dispose-islands-in t)
-                  (swap-dom-nodes t oob s)
-                  (sx-hydrate t)
-                  (process-elements t)))
+                  (swap-dom-nodes
+                    t
+                    (if (= s "innerHTML") (children-to-fragment oob) oob)
+                    s)
+                  (post-swap t)))
               (let
                 ((select-sel (dom-get-attr el "sx-select"))
                   (content
@@ -324,20 +326,31 @@
           (if
             select-sel
             (let
-              ((html (select-html-from-doc doc select-sel)))
-              (with-transition
-                use-transition
+              ((container (dom-create-element "div" nil)))
+              (dom-set-inner-html container (dom-body-inner-html doc))
+              (process-oob-swaps
+                container
                 (fn
-                  ()
-                  (let
-                    ((swap-root (swap-html-string target html swap-style)))
-                    (log-info
-                      (str
-                        "swap-root: "
-                        (if swap-root (dom-tag-name swap-root) "nil")
-                        " target: "
-                        (dom-tag-name target)))
-                    (post-swap (or swap-root target))))))
+                  (t oob (s :as string))
+                  (dispose-islands-in t)
+                  (swap-dom-nodes t oob s)
+                  (post-swap t)))
+              (hoist-head-elements container)
+              (let
+                ((html (select-from-container container select-sel)))
+                (with-transition
+                  use-transition
+                  (fn
+                    ()
+                    (let
+                      ((swap-root (swap-dom-nodes target html swap-style)))
+                      (log-info
+                        (str
+                          "swap-root: "
+                          (if swap-root (dom-tag-name swap-root) "nil")
+                          " target: "
+                          (dom-tag-name target)))
+                      (post-swap (or swap-root target)))))))
             (let
               ((container (dom-create-element "div" nil)))
               (dom-set-inner-html container (dom-body-inner-html doc))

shared/static/wasm/sx_browser.bc.wasm.js

@@ -1792,7 +1792,7 @@
             blake2_js_for_wasm_create: blake2_js_for_wasm_create};
    }
    (globalThis))
-({"link":[["runtime-0db9b496",0],["prelude-d7e4b000",0],["stdlib-23ce0836",[]],["sx-80621fb4",[2]],["jsoo_runtime-f96b44a8",[2]],["js_of_ocaml-651f6707",[2,4]],["dune__exe__Sx_browser-8ae21d0a",[2,3,5]],["std_exit-10fb8830",[2]],["start-80fdb768",0]],"generated":(b=>{var
+({"link":[["runtime-0db9b496",0],["prelude-d7e4b000",0],["stdlib-23ce0836",[]],["sx-afdcb8e8",[2]],["jsoo_runtime-f96b44a8",[2]],["js_of_ocaml-651f6707",[2,4]],["dune__exe__Sx_browser-8ae21d0a",[2,3,5]],["std_exit-10fb8830",[2]],["start-80fdb768",0]],"generated":(b=>{var
 c=b,a=b?.module?.export||b;return{"env":{"caml_ba_kind_of_typed_array":()=>{throw new
 Error("caml_ba_kind_of_typed_array not implemented")},"caml_exn_with_js_backtrace":()=>{throw new
 Error("caml_exn_with_js_backtrace not implemented")},"caml_int64_create_lo_mi_hi":()=>{throw new