Five new guest-language plans mirroring the js-on-sx / hs-loop pattern, each
with a phased roadmap (Progress log + Blockers), a self-contained agent
briefing for respawning a long-lived loop, and a shared restore-all.sh that
snapshots state across all seven language loops.
Briefings bake in the lessons from today's stall debugging: never call
sx_build (600s watchdog), only touch lib/<lang>/** + own plan file, commit
every feature, update Progress log on each commit, route shared-file
issues to Blockers rather than fixing them.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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.
