WIP: bytecode module pre-compilation and loading infrastructure

- compile-modules.js: Node.js build tool, all 23 .sx files compile to .sxbc.json
- api_load_module with shared globals (beginModuleLoad/endModuleLoad batch API)
- api_compile_module for runtime compilation
- sx-platform.js: bytecode-first loader with source fallback, JSON deserializer
- Deferred JIT enable (setTimeout after boot)

Known issues:
- WASM browser: loadModule loads but functions not accessible (env writeback
  issue with interned keys)
- WASM browser: compileModule fails ("Not callable: nil" — compile-module
  function from bytecode not working correctly in WASM context)
- Node.js js_of_ocaml: full roundtrip works (compile → load → call)

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

shared/static/wasm/sx/freeze.sxbc.json

@@ -0,0 +1 @@
+{"magic":"SXBC","version":1,"hash":"19bca721c37b25b6","module":{"bytecode":[52,1,0,0,128,0,0,5,51,3,0,128,2,0,5,51,5,0,128,4,0,5,51,7,0,128,6,0,5,51,9,0,128,8,0,5,51,11,0,128,10,0,5,51,13,0,128,12,0,5,51,15,0,128,14,0,5,51,17,0,128,16,0,50],"constants":[{"t":"s","v":"freeze-registry"},{"t":"s","v":"dict"},{"t":"s","v":"freeze-signal"},{"t":"code","v":{"bytecode":[1,1,0,2,52,0,0,2,17,2,16,2,33,56,0,20,3,0,16,2,52,2,0,2,6,34,5,0,5,52,4,0,0,17,3,20,5,0,16,3,1,7,0,16,0,1,8,0,16,1,52,6,0,4,48,2,5,20,3,0,16,2,16,3,52,9,0,3,32,1,0,2,50],"constants":[{"t":"s","v":"context"},{"t":"s","v":"sx-freeze-scope"},{"t":"s","v":"get"},{"t":"s","v":"freeze-registry"},{"t":"s","v":"list"},{"t":"s","v":"append!"},{"t":"s","v":"dict"},{"t":"s","v":"name"},{"t":"s","v":"signal"},{"t":"s","v":"dict-set!"}]}},{"t":"s","v":"freeze-scope"},{"t":"code","v":{"bytecode":[1,1,0,16,0,52,0,0,2,5,20,3,0,16,0,52,4,0,0,52,2,0,3,5,20,5,0,16,1,2,48,2,5,1,1,0,52,6,0,1,5,2,50],"constants":[{"t":"s","v":"scope-push!"},{"t":"s","v":"sx-freeze-scope"},{"t":"s","v":"dict-set!"},{"t":"s","v":"freeze-registry"},{"t":"s","v":"list"},{"t":"s","v":"cek-call"},{"t":"s","v":"scope-pop!"}]}},{"t":"s","v":"cek-freeze-scope"},{"t":"code","v":{"bytecode":[20,1,0,16,0,52,0,0,2,6,34,5,0,5,52,2,0,0,17,1,52,3,0,0,17,2,51,5,0,1,2,16,1,52,4,0,2,5,1,6,0,16,0,1,7,0,16,2,52,3,0,4,50],"constants":[{"t":"s","v":"get"},{"t":"s","v":"freeze-registry"},{"t":"s","v":"list"},{"t":"s","v":"dict"},{"t":"s","v":"for-each"},{"t":"code","v":{"bytecode":[18,0,16,0,1,2,0,52,1,0,2,20,3,0,16,0,1,4,0,52,1,0,2,48,1,52,0,0,3,50],"constants":[{"t":"s","v":"dict-set!"},{"t":"s","v":"get"},{"t":"s","v":"name"},{"t":"s","v":"signal-value"},{"t":"s","v":"signal"}]}},{"t":"s","v":"name"},{"t":"s","v":"signals"}]}},{"t":"s","v":"cek-freeze-all"},{"t":"code","v":{"bytecode":[51,1,0,20,3,0,52,2,0,1,52,0,0,2,50],"constants":[{"t":"s","v":"map"},{"t":"code","v":{"bytecode":[20,0,0,16,0,49,1,50],"constants":[{"t":"s","v":"cek-freeze-scope"}]}},{"t":"s","v":"keys"},{"t":"s","v":"freeze-registry"}]}},{"t":"s","v":"cek-thaw-scope"},{"t":"code","v":{"bytecode":[20,1,0,16,0,52,0,0,2,6,34,5,0,5,52,2,0,0,17,2,16,1,1,3,0,52,0,0,2,17,3,16,3,33,14,0,51,5,0,1,3,16,2,52,4,0,2,32,1,0,2,50],"constants":[{"t":"s","v":"get"},{"t":"s","v":"freeze-registry"},{"t":"s","v":"list"},{"t":"s","v":"signals"},{"t":"s","v":"for-each"},{"t":"code","v":{"bytecode":[16,0,1,1,0,52,0,0,2,17,1,16,0,1,2,0,52,0,0,2,17,2,18,0,16,1,52,0,0,2,17,3,16,3,52,4,0,1,52,3,0,1,33,12,0,20,5,0,16,2,16,3,49,2,32,1,0,2,50],"constants":[{"t":"s","v":"get"},{"t":"s","v":"name"},{"t":"s","v":"signal"},{"t":"s","v":"not"},{"t":"s","v":"nil?"},{"t":"s","v":"reset!"}]}}]}},{"t":"s","v":"cek-thaw-all"},{"t":"code","v":{"bytecode":[51,1,0,16,0,52,0,0,2,50],"constants":[{"t":"s","v":"for-each"},{"t":"code","v":{"bytecode":[20,0,0,16,0,1,2,0,52,1,0,2,16,0,49,2,50],"constants":[{"t":"s","v":"cek-thaw-scope"},{"t":"s","v":"get"},{"t":"s","v":"name"}]}}]}},{"t":"s","v":"freeze-to-sx"},{"t":"code","v":{"bytecode":[20,0,0,20,1,0,16,0,48,1,49,1,50],"constants":[{"t":"s","v":"sx-serialize"},{"t":"s","v":"cek-freeze-scope"}]}},{"t":"s","v":"thaw-from-sx"},{"t":"code","v":{"bytecode":[20,0,0,16,0,48,1,17,1,16,1,52,2,0,1,52,1,0,1,33,27,0,16,1,52,3,0,1,17,2,20,4,0,16,2,1,6,0,52,5,0,2,16,2,49,2,32,1,0,2,50],"constants":[{"t":"s","v":"sx-parse"},{"t":"s","v":"not"},{"t":"s","v":"empty?"},{"t":"s","v":"first"},{"t":"s","v":"cek-thaw-scope"},{"t":"s","v":"get"},{"t":"s","v":"name"}]}}]}}

shared/static/wasm/sx/harness-reactive.sxbc.json

@@ -0,0 +1 @@
+{"magic":"SXBC","version":1,"hash":"93780bb9539e858f","module":{"bytecode":[51,1,0,128,0,0,5,51,3,0,128,2,0,5,51,5,0,128,4,0,5,51,7,0,128,6,0,5,51,9,0,128,8,0,5,51,11,0,128,10,0,5,51,13,0,128,12,0,5,51,15,0,128,14,0,5,51,17,0,128,16,0,5,51,19,0,128,18,0,5,51,21,0,128,20,0,50],"constants":[{"t":"s","v":"assert-signal-value"},{"t":"code","v":{"bytecode":[20,0,0,16,0,48,1,17,2,20,1,0,16,2,16,1,1,3,0,16,1,1,4,0,16,2,52,2,0,4,49,3,50],"constants":[{"t":"s","v":"deref"},{"t":"s","v":"assert="},{"t":"s","v":"str"},{"t":"s","v":"Expected signal value "},{"t":"s","v":", got "}]}},{"t":"s","v":"assert-signal-has-subscribers"},{"t":"code","v":{"bytecode":[20,0,0,20,3,0,16,0,48,1,52,2,0,1,1,4,0,52,1,0,2,1,5,0,49,2,50],"constants":[{"t":"s","v":"assert"},{"t":"s","v":">"},{"t":"s","v":"len"},{"t":"s","v":"signal-subscribers"},{"t":"n","v":0},{"t":"s","v":"Expected signal to have subscribers"}]}},{"t":"s","v":"assert-signal-no-subscribers"},{"t":"code","v":{"bytecode":[20,0,0,20,3,0,16,0,48,1,52,2,0,1,1,4,0,52,1,0,2,1,5,0,49,2,50],"constants":[{"t":"s","v":"assert"},{"t":"s","v":"="},{"t":"s","v":"len"},{"t":"s","v":"signal-subscribers"},{"t":"n","v":0},{"t":"s","v":"Expected signal to have no subscribers"}]}},{"t":"s","v":"assert-signal-subscriber-count"},{"t":"code","v":{"bytecode":[20,1,0,16,0,48,1,52,0,0,1,17,2,20,2,0,16,2,16,1,1,4,0,16,1,1,5,0,16,2,52,3,0,4,49,3,50],"constants":[{"t":"s","v":"len"},{"t":"s","v":"signal-subscribers"},{"t":"s","v":"assert="},{"t":"s","v":"str"},{"t":"s","v":"Expected "},{"t":"s","v":" subscribers, got "}]}},{"t":"s","v":"simulate-signal-set!"},{"t":"code","v":{"bytecode":[20,0,0,16,0,16,1,49,2,50],"constants":[{"t":"s","v":"reset!"}]}},{"t":"s","v":"simulate-signal-swap!"},{"t":"code","v":{"bytecode":[20,1,0,16,0,16,1,16,2,52,2,0,2,52,2,0,2,52,0,0,2,50],"constants":[{"t":"s","v":"apply"},{"t":"s","v":"swap!"},{"t":"s","v":"cons"}]}},{"t":"s","v":"assert-computed-dep-count"},{"t":"code","v":{"bytecode":[20,1,0,16,0,48,1,52,0,0,1,17,2,20,2,0,16,2,16,1,1,4,0,16,1,1,5,0,16,2,52,3,0,4,49,3,50],"constants":[{"t":"s","v":"len"},{"t":"s","v":"signal-deps"},{"t":"s","v":"assert="},{"t":"s","v":"str"},{"t":"s","v":"Expected "},{"t":"s","v":" deps, got "}]}},{"t":"s","v":"assert-computed-depends-on"},{"t":"code","v":{"bytecode":[20,0,0,20,2,0,16,0,48,1,16,1,52,1,0,2,1,3,0,49,2,50],"constants":[{"t":"s","v":"assert"},{"t":"s","v":"contains?"},{"t":"s","v":"signal-deps"},{"t":"s","v":"Expected computed to depend on the given signal"}]}},{"t":"s","v":"count-effect-runs"},{"t":"code","v":{"bytecode":[20,0,0,1,1,0,48,1,17,1,20,2,0,51,3,0,1,1,48,1,5,1,1,0,17,2,20,2,0,51,4,0,1,2,1,0,48,1,17,3,16,2,50],"constants":[{"t":"s","v":"signal"},{"t":"n","v":0},{"t":"s","v":"effect"},{"t":"code","v":{"bytecode":[20,0,0,18,0,49,1,50],"constants":[{"t":"s","v":"deref"}]}},{"t":"code","v":{"bytecode":[18,0,1,1,0,52,0,0,2,19,0,5,20,2,0,18,1,2,49,2,50],"constants":[{"t":"s","v":"+"},{"t":"n","v":1},{"t":"s","v":"cek-call"}]}}]}},{"t":"s","v":"make-test-signal"},{"t":"code","v":{"bytecode":[20,0,0,16,0,48,1,17,1,52,1,0,0,17,2,20,2,0,51,3,0,1,2,1,1,48,1,5,1,0,0,16,1,1,4,0,16,2,65,2,0,50],"constants":[{"t":"s","v":"signal"},{"t":"s","v":"list"},{"t":"s","v":"effect"},{"t":"code","v":{"bytecode":[20,0,0,18,0,20,1,0,18,1,48,1,49,2,50],"constants":[{"t":"s","v":"append!"},{"t":"s","v":"deref"}]}},{"t":"s","v":"history"}]}},{"t":"s","v":"assert-batch-coalesces"},{"t":"code","v":{"bytecode":[1,0,0,17,2,20,1,0,1,0,0,48,1,17,3,20,2,0,51,3,0,1,3,1,2,48,1,5,1,0,0,17,2,5,20,4,0,16,0,48,1,5,20,5,0,16,2,16,1,1,7,0,16,1,1,8,0,16,2,52,6,0,4,49,3,50],"constants":[{"t":"n","v":0},{"t":"s","v":"signal"},{"t":"s","v":"effect"},{"t":"code","v":{"bytecode":[20,0,0,18,0,48,1,5,18,1,1,2,0,52,1,0,2,19,1,50],"constants":[{"t":"s","v":"deref"},{"t":"s","v":"+"},{"t":"n","v":1}]}},{"t":"s","v":"batch"},{"t":"s","v":"assert="},{"t":"s","v":"str"},{"t":"s","v":"Expected "},{"t":"s","v":" notifications, got "}]}}]}}

shared/static/wasm/sx/signals.sxbc.json

@@ -0,0 +1 @@
+{"magic":"SXBC","version":1,"hash":"1e908c466d2b8c22","module":{"bytecode":[51,1,0,128,0,0,5,51,3,0,128,2,0,5,52,5,0,0,128,4,0,5,51,7,0,128,6,0,5,51,9,0,128,8,0,5,51,11,0,128,10,0,5,51,13,0,128,12,0,5,51,15,0,128,14,0,5,51,17,0,128,16,0,5,51,19,0,128,18,0,50],"constants":[{"t":"s","v":"with-marsh-scope"},{"t":"code","v":{"bytecode":[52,0,0,0,17,2,20,1,0,51,2,0,1,2,16,1,48,2,5,20,3,0,16,0,1,4,0,16,2,49,3,50],"constants":[{"t":"s","v":"list"},{"t":"s","v":"with-island-scope"},{"t":"code","v":{"bytecode":[20,0,0,18,0,16,0,49,2,50],"constants":[{"t":"s","v":"append!"}]}},{"t":"s","v":"dom-set-data"},{"t":"s","v":"sx-marsh-disposers"}]}},{"t":"s","v":"dispose-marsh-scope"},{"t":"code","v":{"bytecode":[20,0,0,16,0,1,1,0,48,2,17,1,16,1,33,24,0,51,3,0,16,1,52,2,0,2,5,20,4,0,16,0,1,1,0,2,49,3,32,1,0,2,50],"constants":[{"t":"s","v":"dom-get-data"},{"t":"s","v":"sx-marsh-disposers"},{"t":"s","v":"for-each"},{"t":"code","v":{"bytecode":[20,0,0,16,0,2,49,2,50],"constants":[{"t":"s","v":"cek-call"}]}},{"t":"s","v":"dom-set-data"}]}},{"t":"s","v":"*store-registry*"},{"t":"s","v":"dict"},{"t":"s","v":"def-store"},{"t":"code","v":{"bytecode":[20,0,0,17,2,16,2,16,0,52,2,0,2,52,1,0,1,33,22,0,16,2,16,0,20,4,0,16,1,2,48,2,52,3,0,3,21,0,0,32,1,0,2,5,20,0,0,16,0,52,5,0,2,50],"constants":[{"t":"s","v":"*store-registry*"},{"t":"s","v":"not"},{"t":"s","v":"has-key?"},{"t":"s","v":"assoc"},{"t":"s","v":"cek-call"},{"t":"s","v":"get"}]}},{"t":"s","v":"use-store"},{"t":"code","v":{"bytecode":[20,1,0,16,0,52,0,0,2,33,12,0,20,1,0,16,0,52,2,0,2,32,16,0,1,5,0,16,0,1,6,0,52,4,0,3,52,3,0,1,50],"constants":[{"t":"s","v":"has-key?"},{"t":"s","v":"*store-registry*"},{"t":"s","v":"get"},{"t":"s","v":"error"},{"t":"s","v":"str"},{"t":"s","v":"Store not found: "},{"t":"s","v":". Call (def-store ...) before (use-store ...)."}]}},{"t":"s","v":"clear-stores"},{"t":"code","v":{"bytecode":[52,0,0,0,21,1,0,50],"constants":[{"t":"s","v":"dict"},{"t":"s","v":"*store-registry*"}]}},{"t":"s","v":"emit-event"},{"t":"code","v":{"bytecode":[20,0,0,16,0,16,1,16,2,49,3,50],"constants":[{"t":"s","v":"dom-dispatch"}]}},{"t":"s","v":"on-event"},{"t":"code","v":{"bytecode":[20,0,0,16,0,16,1,16,2,49,3,50],"constants":[{"t":"s","v":"dom-on"}]}},{"t":"s","v":"bridge-event"},{"t":"code","v":{"bytecode":[20,0,0,51,1,0,1,0,1,1,1,3,1,2,49,1,50],"constants":[{"t":"s","v":"effect"},{"t":"code","v":{"bytecode":[20,0,0,18,0,18,1,51,1,0,0,2,0,3,48,3,17,0,16,0,50],"constants":[{"t":"s","v":"dom-on"},{"t":"code","v":{"bytecode":[20,0,0,16,0,48,1,17,1,18,0,33,16,0,20,1,0,18,0,16,1,52,2,0,1,48,2,32,2,0,16,1,17,2,20,3,0,18,1,16,2,49,2,50],"constants":[{"t":"s","v":"event-detail"},{"t":"s","v":"cek-call"},{"t":"s","v":"list"},{"t":"s","v":"reset!"}]}}]}}]}},{"t":"s","v":"resource"},{"t":"code","v":{"bytecode":[20,0,0,1,2,0,3,1,3,0,2,1,4,0,2,52,1,0,6,48,1,17,1,20,5,0,20,6,0,16,0,2,48,2,51,7,0,1,1,51,8,0,1,1,48,3,5,16,1,50],"constants":[{"t":"s","v":"signal"},{"t":"s","v":"dict"},{"t":"s","v":"loading"},{"t":"s","v":"data"},{"t":"s","v":"error"},{"t":"s","v":"promise-then"},{"t":"s","v":"cek-call"},{"t":"code","v":{"bytecode":[20,0,0,18,0,1,2,0,4,1,3,0,16,0,1,4,0,2,52,1,0,6,49,2,50],"constants":[{"t":"s","v":"reset!"},{"t":"s","v":"dict"},{"t":"s","v":"loading"},{"t":"s","v":"data"},{"t":"s","v":"error"}]}},{"t":"code","v":{"bytecode":[20,0,0,18,0,1,2,0,4,1,3,0,2,1,4,0,16,0,52,1,0,6,49,2,50],"constants":[{"t":"s","v":"reset!"},{"t":"s","v":"dict"},{"t":"s","v":"loading"},{"t":"s","v":"data"},{"t":"s","v":"error"}]}}]}}]}}