[vincentkoc]

Summary

The slow-subscriber isolation test previously had only a slow subscriber. Add a fast peer and verify continued delivery, its retained subscription, and normal closure after the slow peer overflows.

Remove the redundant 20,000-fragment replay-buffer case while keeping the 100,000-fragment regression. Complete the small test audit ledger with coverage decisions across all eleven unit/integration files and the browser suite.

Compatibility And Security

Tests and ledger only; production LOC delta is zero. No protocol, exports, runtime behavior, or release changes. No demonstrated broken public feature or orphan fixture was found during the audit.

Validation

• Crabbox AWS Linux, Node 24.19.0: pnpm check passed (166 tests, formatting, build, typecheck, lint, package install/import checks).
• pnpm test:browser passed all 10 real-browser cases.
• Rebase onto the merged parent preserved the identical source tree.
• CI passed: Node 22/24 on Linux, macOS, and Windows; Node 26 on Linux; browser smoke.
• Independent P0–P3 branch review: no actionable findings.
• Follows test: remove duplicate WebSocket fixtures and timing races #141 and test(node): exercise the native PTY driver #142; decisions are in TEST_CLEANUP.md.
• No credentials, private paths, private hosts, or sensitive logs included.

[clawsweeper]

🦞👀
ClawSweeper picked this up.

Pull request received. I will update this pull request when review starts.