The persistence seam is now create/open/stat/list returning per-session
SessionHandles (read/append/flush/close); every log read and write flows
through the owning handle. The seam package exports only the service and
handle contracts, consumer-visible errors, and pure durable-data
validation helpers; each backend owns its complete storage runtime, and
the shared contract suites pin equivalent observable behavior. The
backend routes published sessions' live events by id into the active
write handle; agent-loop only acquires, seeds, and closes the handle.
Resume appends interruptedTurnClosers through its write handle;
session-query owns the revision-keyed cold cache. Legacy-only surfaces
are removed in the same swap: locate/readRaw/supportsRawArtifacts, the
legacy event-shape read migration, zstd torn-frame salvage,
DSH_SESSION_JSONL, and hook transcript_path population; a torn final
zstd frame is discarded whole; the session-list cold blank probe returns
on stat metadata (eventCount derived from the last physical row,
sizeBytes). The WebUI ZIP export serializes the logical log from a read
handle, so both backends export identically.
Refs #3245
The package exported six functions, four of them shaped by one SDK's
transport each: a dispatcher factory, a `node:http` agent factory, a
proxy-URL lookup, and a policy accessor. Review asked whether the call
sites could converge instead of the package growing an export per SDK.
They could, and each removal took a whole shape with it:
- The OTLP exporter moves to the SDK's `fetch` delegate, retiring
`createNodeHttpAgent`. Its Node-version floor goes too: `proxyEnv` on
an `http.Agent` needs 22.21 or 24.5, inside the engines range, so
telemetry was direct on 22.19, 22.20, and 24.0-24.4. The cost is
`compression`, a Node-transport option; the plugin now refuses it,
`keepAlive`, and `httpAgentOptions` at load instead of ignoring them.
- `web-fetch-http` builds its own address-pinning agent under an
annotated `proxy-exempt:` exemption, retiring `createDispatcher`.
Pinning is per-request state a process-wide dispatcher cannot hold.
- E2B reads `route.proxy`, retiring `proxyUrlFor`.
What remains is `installProxyFromEnvironment`, `proxyRouteFor`,
`proxyEnvironmentForChild`, and `clearedProxyEnv` — one per way a caller
can need the policy. Installation absorbs resolution and diagnostic
reporting, which no caller needed apart.
`proxyRouteFor` also closes a defect the old accessor made expressible:
`web-fetch-http` read the policy to decide whether to pin, then read it
again to build a transport, so an unmount between the two returned a
direct, unpinned agent for a URL the first read had cleared as proxied.
A route carries the answer and the transport that answer assumed.
Every egress spec now installs through `installProxyFromEnvironment`, so
no test asserts a policy object a real launch could not produce.
The workflow worker no longer receives proxy configuration: it executes the
model-authored script body, and a proxy URL may carry credentials. A child
process now inherits the values the user exported rather than this process's
normalization, so a SOCKS proxy set for curl survives and no HTTPS_PROXY is
invented. `mode: 'off'` installs a direct dispatcher instead of recording a
policy the global dispatcher ignores, and the environment snapshot is taken
before any write so Windows restores the user's values.
E2B picks its proxy from the control-plane URL the SDK will really call, the
OTLP agent honors `exporter.keepAlive`, and a scheme whose own value was
refused stays direct instead of borrowing another scheme's proxy.
verify-no-bare-dispatcher parses the TypeScript AST as scripts/AGENTS.md
requires; it immediately found the `{ dispatcher }` shorthand the regex missed.
NODE_USE_ENV_PROXY reaches Node 24.0+ and 22.21+, while engines admits 22.19.
Assert the direct connection on an older runtime instead of only the proxied
one, so the seam is executable rather than prose.
Node's built-in fetch ignores HTTP_PROXY, so every harness request connected
directly regardless of what the user exported. Resolve one policy from the
launch environment and install it as undici's global dispatcher, then wire the
four surfaces a global dispatcher cannot reach: web_fetch's pinned transport,
the OTLP exporter's node:http agent, the E2B SDK's own proxy option, and the
environment a child process or worker thread is given.
Each outbound call site carries an egress test that drives its real code path
through a fake proxy; that measurement is what found the OTLP and E2B gaps.
The per-case 15-30s budgets on the Windows native and coverage lanes fire
before oxlint, workflow-worker-thread, and other subprocess-spawning cases
finish under the loaded self-hosted pool; the failures rotate across cases
as load shifts, so per-case widening only moved the flake. Raise the lane
defaults (DSH_COVERAGE_TEST_TIMEOUT_MS and the native --testTimeout) to 90s,
align the oxlint and workflow-worker-thread case budgets, and keep the
built-bin SPAWN_TIMEOUT_MS at 60s under a 90s outer budget.
Local run of check:ci:windows-complete (the windows-native gate) on
latest master surfaced five Windows-only failures, all unreachable by
current CI because the native windows job is disabled and the wine gate
only covers build+site.
- install-lefthook/translation-pairing-merge specs junctioned the real
scripts/ and tsx package into fixtures; Windows recursive deletion
(Node rmSync and git worktree remove) follows MOUNT_POINT junctions and
deleted the repository's own directories mid-run. Fixtures now unlink
their reparse points before any recursive removal (shared helper in
scripts/test-fixture-cleanup.ts).
- workflow-workerthread spawned its worker with an empty env; on Windows
os.tmpdir() then degrades to the literal relative path undefined\temp,
so tsx wrote its transform cache into a cwd-relative undefined/
directory inside the repo. The worker env now injects the host temp
path on win32 (workerSpawnEnv, platform-parameterized and unit-tested
on both arms).
- workspace-context spec did not stub USERPROFILE (win32 homedir) or a
set DSH_HOME, leaking the developer machine's real ~/.dsh/AGENTS.md
into discovery.
- ui-trajectory client-bundle spec mounted the built artifact without the
remote/settingsScope provides the locale plugin needs, so the plugin
never activated and no view registered.
- subagent temp-fixture cleanup lacked the maxRetries Windows handle
release needs under load (EPERM); added retries to the three affected
specs and the fixture-cleanup helper.
Yichen Jiang