refactor: consolidate daemon errors

[thymikee]

Summary

Consolidate daemon-wire error conversion with the kernel error API. Daemon errors now have one canonical owner, while the existing contracts type surface remains compatible.

Validation

Not run locally at the requester’s direction; CI will validate this follow-up PR.

[github-actions]

Size Report

Metric	Base	Current	Diff
JS raw	1.88 MB	1.88 MB	+15 B
JS gzip	605.4 kB	605.2 kB	-198 B
npm tarball	724.1 kB	723.9 kB	-200 B
npm unpacked	2.53 MB	2.53 MB	-183 B

Startup median (7 runs, lower is better):

Scenario	Base	Current	Diff
CLI --version	26.7 ms	26.6 ms	-0.1 ms
CLI --help	56.3 ms	59.0 ms	+2.7 ms

Top changed chunks:

Chunk	Raw diff	Gzip diff
dist/src/agent-device-client.js	-167 B	-90 B
dist/src/session.js	0 B	-56 B
dist/src/runtime.js	0 B	-45 B
dist/src/internal/daemon.js	+5 B	-39 B
dist/src/runner-client.js	0 B	-20 B

[thymikee]

Exact head a0e20cf is not ready because it breaks the released contracts façade. The root package exports ./contracts through src/sdk/contracts.ts, and this patch removes that file's DaemonError re-export. Existing consumers of import type { DaemonError } from agent-device/contracts`` will stop typechecking, contrary to the compatibility claim. Keep the canonical owner and conversion in @agent-device/kernel/errors, but re-export `DaemonError` from `src/sdk/contracts.ts` and add a public-surface regression assertion. The internal consolidation and wire-field preservation otherwise look sound, and exact-head CI is green.

[thymikee]

Addressed in aab0dfa: agent-device/contracts again re-exports DaemonError directly from the canonical @agent-device/kernel/errors module, while @agent-device/kernel/contracts no longer re-exports it. Added a public-facade type regression assertion.

[thymikee]

Clean re-review at aab0dfa4. The released agent-device/contracts façade again exports DaemonError from its canonical kernel-errors owner, and the new public-facade type assertion pins that compatibility contract. Internal daemon-error rehydration still preserves the full wire shape, and the removed client helper has no remaining route. All completed exact-head checks are green; iOS Smoke is still in progress, so CI completion remains the merge condition.

[github-actions]

PR Preview Action v1.8.1
Preview removed because the pull request was closed.
2026-07-30 11:35 UTC