dom-id returns "" for elements without an id attribute, and "" is
truthy in SX. This caused morph-children to build spurious entries
in old-by-id keyed by "", then match unrelated children via the
empty key — advancing oi past id-keyed children like #main-content
and skipping them in cleanup.
Three changes in morph-children (engine.sx):
- old-by-id reduce: normalize empty dom-id to nil so id-less
elements are excluded from the lookup dict
- match-id binding: normalize empty dom-id to nil so new children
without ids don't spuriously match old children
- Case 2 skip condition: use (not (empty? ...)) instead of bare
(dom-id old-child) to avoid treating "" as a real id
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Three bugs in the DOM morph algorithm (web/engine.sx):
1. Empty-id keying: dom-id returns "" (not nil) for elements without an
id attribute, and "" is truthy in SX. Every id-less element was stored
under key "" in old-by-id, causing all new children to match the same
old element via the keyed branch — collapsing all children into one.
Fix: guard with (and id (not (empty? id))) in map building and matching.
2. Cleanup bug: the oi-cursor cleanup (range oi len) removed keyed elements
that were matched and moved from positions >= oi, and failed to remove
unmatched elements at positions < oi. Fix: track consumed indices in a
dict and remove all unconsumed elements regardless of position.
3. Island attr sync: morph-node delegated to morph-island-children without
first syncing the island element's own attributes (e.g. data-sx-state).
Fix: call sync-attrs before morph-island-children.
Also: pass explicit `true` to all dom-clone calls (deep clone parameter).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Replace Node.js compile-modules.js with direct Sx_compiler.compile_module
calls in mcp_tree.ml. No subprocess, no JIT warm-up, no Node.js.
23 files compile in 1.9 seconds.
Also includes rebuilt WASM kernel (iterative cek_run) and all 23
bytecode modules recompiled with native compiler.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Reverse hook syncs VM GLOBAL_SET mutations back to global_env so CEK reads
see JIT-written values. Isomorphic nav: store primitives, event-bridge,
client? predicate. Browser JS and bytecode rebuilt.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Bytecode modules are now serialized as s-expressions (.sxbc) in addition
to JSON (.sxbc.json). The .sxbc format is the canonical representation —
content-addressable, parseable by the SX parser, and suitable for CID
referencing. Annotation layers (source maps, variable names, tests, docs)
can reference the bytecode CID without polluting the bytecode itself.
Format: (sxbc version hash (code :arity N :bytecode (...) :constants (...)))
The browser loader tries .sxbc first (via load-sxbc kernel primitive),
falls back to .sxbc.json. Caddy needs .sxbc MIME type to serve the new
format (currently 404s, JSON fallback works).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
