cache.spec.ts polled fire-and-forget fail-soft writes with a fixed 40ms
settle(); contended runners drain the write after the window, so the
warn/row assertions flaked. Poll the observable outcome with vi.waitFor
(5s) instead, matching the file's existing cold-read write-back pattern.
The sdk-client and subagent-dsh-sdk dispose-ladder tests passed tight
confirmation budgets (disposeGraceMs 100-300ms) to real children; on a
contended runner the SIGKILL exit edge can arrive after the budget and
close() misreports a slow reap as failure. Use the product-default
budgets (disposeGraceMs 3000ms) for the real-child cases; the fake-child
negative cases in dispose.spec.ts keep the 10ms bound.
Replace the TypeScript SDK's public arbitrary command/argv launch surface with the same-version dsh CLI, a named profile, ordered per-launch patches, optional process cwd, and explicit Harness home selection. Installed consumers use the built CLI; clean source checkouts use the package's src/bin.ts through an absolute tsx/esm loader and a source-only patch that omits build-generated Typert loading.
Materialize explicit or inherited environments at spawn time, keep profile-internal patches below caller patches, and resolve every caller-relative path before the child starts. The SDK subagent provider validates its optional CLI and patch files at plugin load and requires an isolated absolute child home.
Treat JSON-RPC initialize as the Loader-owned readiness point: Loader settlement joins entry imports, fiber lifecycle work, and synchronous effect registration, so the server needs no scheduler tick. A delayed profile entry registers a private adapter before initialize resolves, proving caller-supplied plugin routes are visible without fallback.
Update sdk-app ownership, server diagnostics, TypeScript SDK examples, nested-loader coverage, and session-upload replay layering together. The following commit contains only the regenerated SDK transcripts, keeping this API and lifecycle change directly reviewable.
Tianyi Cui