Cache-bust wasm scripts, fix orchestration.sx paren balance

- Add wasm_hash (MD5 of sx_browser.bc.js) to shell template
- Script tags: /wasm/sx_browser.bc.js?v={hash}, /wasm/sx-platform.js?v={hash}
- Pass wasm_hash through helpers.py and ocaml_bridge.py
- Fix missing close paren in bind-sse-swap (broke SX parsing)

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

shared/static/wasm/sx/orchestration.sx

@@ -300,7 +300,8 @@
                 (with-transition use-transition
                   (fn ()
                     (let ((swap-result (swap-dom-nodes target content swap-style)))
-                      (post-swap (or swap-result target))))))))))))
+                      (post-swap (or swap-result target)))))))))))))
+
 
 
 (define handle-html-response :effects [mutation io]
@@ -1083,7 +1084,7 @@
           (with-transition use-transition
             (fn ()
               (swap-html-string target trimmed swap-style)
-              (post-swap target))))))))
+              (post-swap target)))))))))
 
 
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