40 clusters across 6 buckets. Bucket E is human-only (WebSocket,
Tokenizer-API, SourceInfo, WebWorker, fetch non-2xx). Agent loop
works A→B→C→D→F serially, one cluster per commit, aborts on
regression.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Initial commit of the lib/js/ tree and plans/ directory. A previous
session left template-string work in progress — 278/280 unit tests pass
(2 failing: tpl part-count off-by-one, escaped-backtick ident lookup).
test262-runner.py and scoreboard are placeholders (0/8 with 7 timeouts);
fixing the runner is the next queue item.
