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chore(deps): effect rc.116, alchemy beta.79, and the Jev decision model - #949
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…decision model rc.112 -> rc.116 across the effect catalog, alchemy to the first release that runs on rc.113+, and `@effect/ai-typesafe` so apps/ai can ask TypeSafe's Jev a bounded question instead of spending a model turn on it. The rc.115 branch's API deltas are carried over unchanged (`Config.*` and the CLI's `Flag`/`Argument` constructors capitalised, `transformOrFail` -> `transformEffect`, `LanguageModel.Service` -> `LanguageModel.LanguageModel`, `fiber.currentSpan` -> `fiber.cache.span`). What is new here: - **Postgres runs on `@effect/sql-pg`'s own driver.** rc.113 dropped node-postgres, so `PgClient.fromPool` is gone and an invocation-owned `pg.Pool` cannot be handed to it. `createMaplePgPool` and the `Client` subclass that carried the dial bound are replaced by `makeMaplePgClient`: `PgClient.make` with `maxConnections`, a first-class `connectTimeout` that bounds one dial and never the wait for a free connection, and `prepare: false` so a pooler in front of Postgres never has to hand the same connection back. The scope's three-state machine, its ceiling and its bound are unchanged; only the handle it acquires is. Proven against a real Postgres by `pg-connection-scope.integration.test.ts` (backends counted in `pg_stat_activity`): one connection per invocation, released at the boundary, the queue still waiting past the dial bound. Hyperdrive is the one path no local run can prove. - `Effect.isEffect` narrows to `Effect<unknown, unknown, unknown>` now, which no longer subtracts `Effect<any, any, any>` from a union — unitflow's `make` discriminates on `handler` instead. - MCP's transport policy moved onto the runtime descriptor (`runtime.transport.jsonRpc.acceptsBatches`). - alchemy beta.79 no longer discharges the DO activation's ambient services through inference, so `ChatSession` names them; `Exclude` still keeps them out of the host Worker's requirements. - `@distilled.cloud/*` to rc.12, alongside alchemy's own. Jev is wired as its own stack in the LLM seam: `layerDecisionModel` reads `TYPESAFE_API_KEY` and `MAPLE_DECISION_MODEL` (default `jev-latest`), builds on plain fetch with no OpenRouter attribution or Workers AI shim, and is merged into the chat/investigation runtime next to `layerLlm`. Two transport tests assert what actually leaves: the bearer token, the model id and the decision's questions, posted to `/systemone`. Patches regenerated against rc.116. The `HttpApiBuilder` hunk needed re-anchoring (`handlerToRoute` takes the api and routes through `HttpApiPath.toRouterPath` now); bun's fuzzy apply had landed it inside `handlerToHttpEffect`, where it parsed as nothing at all. The redacted registry and `LanguageModel` deferred-decode hunks applied at zero fuzz, and every patched file is `node --check`ed. Verified: `bun typecheck` (46 tasks), `bun run lint`, `bun run knip`, `bun install --frozen-lockfile` under the pinned bun, `alchemy --help`, and the suites for backend platform + alerts, apps/ai platform + mcp transport, alchemy-maple, effect-sdk, domain, apps/cli, plus the Postgres integration suite against docker.
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Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review. 📝 WalkthroughWalkthroughThis pull request adds OpenRouter TypeSafe Jev decision-model support, migrates PostgreSQL handling to scoped clients, and updates Effect rc.116 APIs, dependencies, patches, schemas, error handling, and CLI constructors. ChangesAI decision-model integration
Scoped PostgreSQL client migration
Effect rc.116 upgrade alignment
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Other 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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OpenRouter serves TypeSafe's Jev from its alpha decisions endpoint (`POST /api/alpha/decisions`, beside the versioned API rather than under it), so the decision model no longer needs a second vendor account: one key, one set of app-attribution headers, and decision spend lands in the same place as model spend. `layerDecisionModel` is now `OpenRouterDecisionModel.layer` over the client `layerLlm` already builds, so it requires that client rather than standing up a second HTTP stack; the chat and investigation runtime provides decisions first and the clients under them. `@effect/ai-typesafe` and `TYPESAFE_API_KEY` are gone with it, and the default model is `~typesafe/jev-latest`, with `typesafe/jev-1.13` available through `MAPLE_DECISION_MODEL` if a gate ever needs a fixed judge. The transport tests moved with it: the endpoint, the OpenRouter credential, the app attribution, the model id and the decision's questions are all asserted from what actually leaves.
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Inline comments:
In `@packages/alchemy-maple/src/MapleEnvironment.ts`:
- Line 40: Raise the Effect peer dependency floor to >=4.0.0-rc.113 in both
package manifests: the manifest for packages/alchemy-maple and the manifest for
packages/effect-sdk, corresponding to
packages/alchemy-maple/src/MapleEnvironment.ts:40-40 and
packages/effect-sdk/src/server/config.ts:16-16. No source-code change is
required; this prevents unsupported Effect releases from being admitted while
preserving the existing Config calls.
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📒 Files selected for processing (50)
.env.exampleapps/ai/src/chat/ChatSession.tsapps/ai/src/chat/turn-runner.tsapps/ai/src/mcp/transport/stateless-http.tsapps/ai/src/platform/Llm.test.tsapps/ai/src/platform/Llm.tsapps/ai/src/platform/genai-spans.tsapps/ai/src/worker.tsapps/api/scripts/bench-queries.tsapps/api/test/integration/pg-connection-scope.integration.test.tsapps/cli/src/cli.tsapps/cli/src/commands/analytics.tsapps/cli/src/commands/archive.tsapps/cli/src/commands/attributes.tsapps/cli/src/commands/auth.tsapps/cli/src/commands/config.tsapps/cli/src/commands/data.tsapps/cli/src/commands/errors.tsapps/cli/src/commands/schema.tsapps/cli/src/commands/server.tsapps/cli/src/commands/services.tsapps/cli/src/commands/traces.tsapps/cli/src/commands/update.tsapps/cli/src/lib/flags.tsapps/scraper/src/Env.tslib/cache/src/edge-cache.tslib/effect-clickhouse-http/package.jsonlib/unitflow/src/core/query.tspackage.jsonpackages/alchemy-maple/src/MapleEnvironment.tspackages/alchemy-maple/test/alert-destination-props.test.tspackages/backend/package.jsonpackages/backend/src/platform/Env.tspackages/backend/src/platform/fork-request-scoped.test.tspackages/backend/src/platform/pg-connection-scope.test.tspackages/backend/src/platform/pg-connection-scope.tspackages/db/package.jsonpackages/db/src/client.tspackages/domain/src/http/v2/public-id.tspackages/effect-sdk/src/server/config.tspackages/effect-sdk/src/server/layer.test.tspackages/effect-sdk/src/shared/flushable-logger.tspackages/infra/package.jsonpackages/infra/src/cloudflare/worker-runtime.tspackages/infra/src/config-helpers.tspackages/query-engine/src/caching/bucket-cache.tspatches/@effect%2Fai-openrouter@4.0.0-rc.116.patchpatches/@effect%2Fvitest@4.0.0-rc.112.patchpatches/@effect%2Fvitest@4.0.0-rc.116.patchpatches/effect@4.0.0-rc.116.patch
💤 Files with no reviewable changes (1)
- patches/@effect%2Fvitest@4.0.0-rc.112.patch
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Seven failures, five of them real behaviour changes this bump has to absorb.
- **`Schema.mutable` refuses a schema that carries an encoding.** `web`'s
search-param helper wrapped `fromJsonString`, so the module threw at import
and took every web test and perf run with it. The array is what has to be
mutable, so `mutable` moves inside the JSON decoding.
- **`@maple-dev/effect-clickhouse@0.1.0` calls `Config.string`**, which rc.113
renamed, so the benchmark CLI died at import and the SQL-catalog E2E with it.
Patched here (four identifiers in one dist file); the package's own repo still
needs a release migrated to the rc.113 constructors.
- **rc.116 emits `additionalProperties` from the `onExcessProperty` option**,
defaulting to the decoder's own behaviour, which would have opened all three
published eventing schemas to unmodeled keys. The generator now asks for
`"error"`, and the v1 documents are byte-identical again.
- **A decode failure no longer reports the offending input.** The v2 envelope
resolved a widget's `id` from it to label the bad field; the full JSON path
still identifies the widget positionally, so the label is now best-effort and
the API contract says so.
- **`TimeoutException` carries its own message**, where it used to carry only a
tag, so electric-sync's upstream timeout now reads "Operation timed out after
'30s'" — better, and the assertion says so.
The other two were not rc.116's doing: `react` had drifted to 19.3.0 against
`react-dom` 19.2.8, failing every landing and web build, so the lockfile holds
both at what main ships; and `@effect/{ai-typesafe,...}` aside, the published
`alchemy-maple` and `effect-sdk` now call `Config.String`, so their effect peer
floor moves to rc.113 rather than claiming rc.111 support they no longer have.
Two emissions changed under the bump, both on the public `tools/list` payload.
An empty `Struct({})` renders as `{ not: { type: "null" } }` now, where it used
to render as an object/array `anyOf`. `toInputSchema` normalizes that rootless
shape into a real object schema, because a strict client (the Vercel AI SDK's
validator) drops every tool on a missing `inputSchema.type` — it just no longer
recognized the new spelling, so a no-parameter tool failed registration outright.
Both spellings are matched structurally.
`additionalProperties` now follows the emitter's `onExcessProperty` option and
defaults to the decoder's behaviour, which would have flipped all 57 published
tools from `false` to `true`. The generator asks for `"error"`, so the advertised
schemas stay exactly as they shipped.
`bun dev` never started on this branch: beta.79 serves every provider group from one sidecar that imports the module and expects `export default <Layer>`, so `lib/alchemy-portless/src/Local.ts` launching its own `RpcServer` was refused with "must default-export its provider Layer" before a single resource was planned. Nothing in CI runs `alchemy dev`, which is why 45 green checks said nothing about it. Found by starting the stack and reading the log.
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Takes the effect catalog to
4.0.0-rc.116, alchemy to2.0.0-beta.79, and adds@effect/ai-typesafeso the agent surfaces can ask TypeSafe's Jev a bounded question instead ofspending a model turn on it.
The rc.115 work that has been parked since 2026-09-14 is carried over unchanged (
Config.*and theCLI's
Flag/Argumentconstructors capitalised,transformOrFail→transformEffect,LanguageModel.Service→LanguageModel.LanguageModel,fiber.currentSpan→fiber.cache.span).alchemy beta.79 peers
effect >=4.0.0-rc.115, which ends the block that branch was waiting on.Postgres runs on
@effect/sql-pg's own driverrc.113 dropped node-postgres from
@effect/sql-pg; the package now speaks the wire protocol itselfand
PgClient.fromPoolno longer exists, so an invocation-ownedpg.Poolcannot be handed to it.There is no way around it: pinning sql-pg back to rc.112 under effect rc.116 typechecks in
packages/dbbut leavespackages/dbandpackages/backendon differentdrizzle-ormpeerinstances, which is around a thousand type errors elsewhere.
createMaplePgPooland theClientsubclass that carried the dial bound are replaced bymakeMaplePgClient:PgClient.makewithmaxConnections, a first-classconnectTimeoutthatbounds one dial (connect, TLS and auth) and never the wait for a free connection, and
prepare: falseso a pooler in front of Postgres never has to hand the same connection back. Thescope's Cold/Open/Closed machine,
MAX_CONNECTIONSandCONNECT_TIMEOUT_SECONDSare unchanged;only the handle it acquires is, and its test seam is now
openClientreturning a scoped Effect.pg-connection-scope.integration.test.tsis the proof, against a real Postgres, counting backendsin
pg_stat_activity: one connection serves the whole invocation, it is released at the boundary,and a fan-out wider than the pool still queues past the dial bound rather than failing as a
connection error. All 9 cases pass.
Hyperdrive is the one path no local run proves — the driver opens its own
node:netsocketinstead of node-postgres's. Worth watching
error.typeon the first deploy.Other rc.116 deltas absorbed
Effect.isEffectnarrows toEffect<unknown, unknown, unknown>, which no longer subtractsEffect<any, any, any>from a union; unitflow'smakediscriminates onhandlerinstead.(
runtime.transport.jsonRpc.acceptsBatches).ChatSessionnames them;.make's ownExcludestill keeps them out of the host Worker'srequirements.
@distilled.cloud/*to rc.12, alongside alchemy's own.Jev
OpenRouter serves TypeSafe's Jev from its alpha decisions endpoint
(
POST /api/alpha/decisions, beside the versioned API rather than under it), so there is no secondvendor account:
layerDecisionModelisOpenRouterDecisionModel.layerover the clientlayerLlmalready builds. One key, one set of app-attribution headers, and decision spend lands in the same
account as model spend. It stays a separate layer only because the endpoint is separate; the chat
and investigation runtime provides decisions first and the clients under them.
The default is
~typesafe/jev-latest;MAPLE_DECISION_MODELpinstypesafe/jev-1.13if a gateever needs a fixed judge. Nothing new has to be put in Infisical.
Transport tests assert what actually leaves: the endpoint, the OpenRouter credential, the app
attribution, the model id and the decision's questions.
Patches
Regenerated against rc.116. The redacted-registry and
LanguageModeldeferred-decode hunks appliedat zero fuzz; only the
HttpApiBuilderhunk needed re-anchoring, becausehandlerToRoutenow takesthe api and routes through
HttpApiPath.toRouterPath. bun's fuzzy apply had landed it insidehandlerToHttpEffect, where it parsed as nothing at all — caught bynode --checkon every patchedfile, invisible to
bun typecheck.Verified
bun typecheck(46 tasks),bun run lint,bun run knip,bun install --frozen-lockfileunderthe pinned bun,
alchemy --help, and the suites for backend platform + alerts, apps/ai platform +mcp transport, alchemy-maple, effect-sdk, domain, apps/cli, plus the Postgres integration suite
against docker.
Summary by CodeRabbit
New Features
additionalPropertiesbehavior in generated API and MCP schemas.Bug Fixes
Maintenance