refactor(core): remove unused small model selection

packages/ai/src/protocols/open-responses.ts

@@ -211,43 +211,11 @@ export type StreamItem = Schema.Schema.Type<typeof StreamItem>
 // event-level `error` envelope, so accept all three shapes here.
 // https://www.openresponses.org/specification
 const OpenResponsesErrorPayload = Schema.Struct({
-  type: optionalNull(Schema.String),
   code: optionalNull(Schema.String),
   message: optionalNull(Schema.String),
   param: optionalNull(Schema.String),
 })
 
-const WebSocketErrorHeader = Schema.Union([Schema.String, Schema.Number, Schema.Boolean])
-export const WebSocketErrorEvent = Schema.StructWithRest(
-  Schema.Struct({
-    type: Schema.tag("error"),
-    status: Schema.optional(Schema.Number),
-    status_code: Schema.optional(Schema.Number),
-    code: optionalNull(Schema.String),
-    message: Schema.optional(Schema.String),
-    param: optionalNull(Schema.String),
-    error: optionalNull(OpenResponsesErrorPayload),
-    headers: Schema.optional(Schema.Record(Schema.String, WebSocketErrorHeader)),
-  }),
-  [Schema.Record(Schema.String, Schema.Unknown)],
-)
-const decodeWebSocketErrorEvent = Schema.decodeUnknownEffect(WebSocketErrorEvent)
-
-const decodeKnownErrorEvent = (event: Event) =>
-  decodeWebSocketErrorEvent({
-    ...event,
-    status: typeof event.status === "number" ? event.status : undefined,
-    status_code: typeof event.status_code === "number" ? event.status_code : undefined,
-    headers: ProviderShared.isRecord(event.headers)
-      ? Object.fromEntries(
-          Object.entries(event.headers).filter(
-            (entry): entry is [string, string | number | boolean] =>
-              typeof entry[1] === "string" || typeof entry[1] === "number" || typeof entry[1] === "boolean",
-          ),
-        )
-      : undefined,
-  })
-
 export const Event = Schema.StructWithRest(
   Schema.Struct({
     type: Schema.String,
@@ -272,9 +240,6 @@ export const Event = Schema.StructWithRest(
     message: Schema.optional(Schema.String),
     param: optionalNull(Schema.String),
     error: optionalNull(OpenResponsesErrorPayload),
-    status: Schema.optional(Schema.Unknown),
-    status_code: Schema.optional(Schema.Unknown),
-    headers: Schema.optional(Schema.Unknown),
   }),
   [Schema.Record(Schema.String, Schema.Unknown)],
 )
@@ -667,9 +632,9 @@ export type StepResult = readonly [ParserState, ReadonlyArray<LLMEvent>]
 const NO_EVENTS: StepResult["1"] = []
 
 // `response.completed` / `response.incomplete` are clean finishes that emit a
-// `finish` event; `response.failed` and `error` are hard failures. All four end
-// the stream, so keep this set aligned with `step` and the protocol's terminal predicate.
-const TERMINAL_TYPES = new Set(["error", "response.completed", "response.incomplete", "response.failed"])
+// `finish` event; `response.failed` is a hard failure. All three end the stream,
+// so keep this set aligned with `step` and the protocol's terminal predicate.
+const TERMINAL_TYPES = new Set(["response.completed", "response.incomplete", "response.failed"])
 export const terminal = (event: Event) => TERMINAL_TYPES.has(event.type)
 
 const onOutputTextDelta = (state: ParserState, event: Event, id: string): StepResult => {
@@ -1004,16 +969,10 @@ const providerErrorMessage = (event: Event, fallback: string): string => {
 const providerError = (state: ParserState, event: Event, fallback: string) => {
   const code = event.code || event.error?.code || event.response?.error?.code || undefined
   const message = providerErrorMessage(event, fallback)
-  const status =
-    typeof event.status === "number"
-      ? event.status
-      : typeof event.status_code === "number"
-        ? event.status_code
-        : undefined
   return new AIError({
     module: state.id,
     method: "stream",
-    reason: classifyProviderFailure({ message, code, status }),
+    reason: classifyProviderFailure({ message, code }),
   })
 }
 
@@ -1056,11 +1015,7 @@ export const step = (state: ParserState, event: Event) => {
   if (event.type === "response.completed" || event.type === "response.incomplete")
     return Effect.succeed(onResponseFinish(state, event))
   if (event.type === "response.failed") return providerError(state, event, `${state.name} response failed`)
-  if (event.type === "error")
-    return decodeKnownErrorEvent(event).pipe(
-      Effect.mapError(() => ProviderShared.eventError(state.id, `${state.name} returned a malformed error event`)),
-      Effect.flatMap(() => providerError(state, event, `${state.name} stream error`)),
-    )
+  if (event.type === "error") return providerError(state, event, `${state.name} stream error`)
   return Effect.succeed<StepResult>([state, NO_EVENTS])
 }
 

packages/ai/src/provider-error.ts

@@ -67,7 +67,6 @@ const SERVER_CODES = new Set([
   "overloaded_error",
   "server_error",
   "server_is_overloaded",
-  "slow_down",
   "serviceunavailableexception",
 ])
 const INVALID_REQUEST_CODES = new Set(["invalid_prompt", "invalid_request_error", "validationexception"])

packages/ai/src/route/transport/websocket.ts

@@ -29,45 +29,14 @@ export class Service extends Context.Service<Service, Interface>()("@opencode/AI
 const transportError = (
   method: string,
   message: string,
-  input: {
-    readonly url?: string
-    readonly kind?: string
-    readonly phase?: TransportReason["phase"]
-    readonly delivery?: TransportReason["delivery"]
-  } = {},
+  input: { readonly url?: string; readonly kind?: string } = {},
 ) =>
   new AIError({
     module: "WebSocketExecutor",
     method,
-    reason: new TransportReason({
-      message,
-      url: input.url,
-      kind: input.kind,
-      phase: input.phase,
-      delivery: input.delivery,
-    }),
+    reason: new TransportReason({ message, url: input.url, kind: input.kind }),
   })
 
-const annotateTransportError = (
-  error: AIError,
-  input: { readonly phase: TransportReason["phase"]; readonly delivery: TransportReason["delivery"] },
-) =>
-  error.reason._tag === "Transport"
-    ? new AIError({
-        module: error.module,
-        method: error.method,
-        reason: new TransportReason({
-          message: error.reason.message,
-          kind: error.reason.kind,
-          url: error.reason.url,
-          http: error.reason.http,
-          phase: input.phase,
-          delivery: input.delivery,
-          recovery: error.reason.recovery,
-        }),
-      })
-    : error
-
 const eventMessage = (event: Event) => {
   if ("message" in event && typeof event.message === "string") return event.message
   return event.type
@@ -87,8 +56,6 @@ const waitOpen = (ws: globalThis.WebSocket, input: WebSocketRequest) => {
       transportError("open", `WebSocket closed before opening (state ${ws.readyState})`, {
         url: input.url,
         kind: "open",
-        phase: "connect",
-        delivery: "not-sent",
       }),
     )
   }
@@ -112,12 +79,7 @@ const waitOpen = (ws: globalThis.WebSocket, input: WebSocketRequest) => {
       cleanup()
       resume(
         Effect.fail(
-          transportError("open", `Failed to open WebSocket: ${eventMessage(event)}`, {
-            url: input.url,
-            kind: "open",
-            phase: "connect",
-            delivery: "not-sent",
-          }),
+          transportError("open", `Failed to open WebSocket: ${eventMessage(event)}`, { url: input.url, kind: "open" }),
         ),
       )
     }
@@ -128,8 +90,6 @@ const waitOpen = (ws: globalThis.WebSocket, input: WebSocketRequest) => {
           transportError("open", `WebSocket closed before opening with code ${event.code}`, {
             url: input.url,
             kind: "open",
-            phase: "connect",
-            delivery: "not-sent",
           }),
         ),
       )
@@ -159,8 +119,6 @@ const webSocketUrl = (value: string) =>
       transportError("prepare", error instanceof Error ? error.message : "Invalid WebSocket URL", {
         url: value,
         kind: "websocket",
-        phase: "prepare",
-        delivery: "not-sent",
       }),
   })
 
@@ -172,8 +130,6 @@ export const open = (input: WebSocketRequest) =>
       transportError("open", error instanceof Error ? error.message : "Failed to construct WebSocket", {
         url: input.url,
         kind: "open",
-        phase: "connect",
-        delivery: "not-sent",
       }),
   }).pipe(Effect.flatMap((ws) => fromWebSocket(ws, input)))
 
@@ -194,11 +150,7 @@ export const fromWebSocket = (
       Queue.failCauseUnsafe(
         messages,
         Cause.fail(
-          transportError("message", "Unsupported WebSocket message payload", {
-            url: input.url,
-            kind: "message",
-            phase: "receive",
-          }),
+          transportError("message", "Unsupported WebSocket message payload", { url: input.url, kind: "message" }),
         ),
       )
     }
@@ -206,23 +158,16 @@ export const fromWebSocket = (
       Queue.failCauseUnsafe(
         messages,
         Cause.fail(
-          transportError("message", `WebSocket error: ${eventMessage(event)}`, {
-            url: input.url,
-            kind: "message",
-            phase: "receive",
-          }),
+          transportError("message", `WebSocket error: ${eventMessage(event)}`, { url: input.url, kind: "message" }),
         ),
       )
     }
     const onClose = (event: CloseEvent) => {
+      if (event.code === 1000 || event.code === 1005) return Queue.endUnsafe(messages)
       Queue.failCauseUnsafe(
         messages,
         Cause.fail(
-          transportError("message", `WebSocket closed with code ${event.code}`, {
-            url: input.url,
-            kind: "close",
-            phase: "close",
-          }),
+          transportError("message", `WebSocket closed with code ${event.code}`, { url: input.url, kind: "close" }),
         ),
       )
     }
@@ -244,8 +189,6 @@ export const fromWebSocket = (
             transportError("sendText", error instanceof Error ? error.message : "Failed to send WebSocket message", {
               url: input.url,
               kind: "write",
-              phase: "send",
-              delivery: "not-sent",
             }),
         }),
       messages: Stream.fromQueue(messages),
@@ -301,8 +244,6 @@ export const json = <Body, Message>(input: JsonInput<Body, Message>): JsonTransp
         transportError("json", "WebSocket JSON transport requires WebSocketExecutor.Service", {
           url: prepared.url,
           kind: "websocket",
-          phase: "prepare",
-          delivery: "not-sent",
         }),
       )
     }
@@ -310,27 +251,11 @@ export const json = <Body, Message>(input: JsonInput<Body, Message>): JsonTransp
     return Stream.unwrap(
       Effect.gen(function* () {
         const connection = yield* Effect.acquireRelease(
-          webSocket
-            .open({ url: prepared.url, headers: prepared.headers })
-            .pipe(
-              Effect.mapError((error) => annotateTransportError(error, { phase: "connect", delivery: "not-sent" })),
-            ),
+          webSocket.open({ url: prepared.url, headers: prepared.headers }),
           (connection) => connection.close,
         )
         yield* connection.sendText(prepared.message)
-        let observed = false
-        return connection.messages.pipe(
-          Stream.map((message) => {
-            observed = true
-            return messageText(message, decoder)
-          }),
-          Stream.mapError((error) =>
-            annotateTransportError(error, {
-              phase: error.reason._tag === "Transport" && error.reason.phase === "close" ? "close" : "receive",
-              delivery: observed ? "accepted" : "ambiguous",
-            }),
-          ),
-        )
+        return connection.messages.pipe(Stream.map((message) => messageText(message, decoder)))
       }),
     )
   },

packages/ai/src/schema/errors.ts

@@ -98,13 +98,6 @@ export class TransportReason extends Schema.Class<TransportReason>("AI.Error.Tra
   kind: Schema.optional(Schema.String),
   url: Schema.optional(Schema.String),
   http: Schema.optional(HttpContext),
-  phase: Schema.optional(
-    Schema.Literals(["prepare", "queue", "connect", "send", "receive", "decode", "complete", "fallback", "close"]),
-  ),
-  delivery: Schema.optional(Schema.Literals(["not-sent", "rejected", "ambiguous", "accepted"])),
-  recovery: Schema.optional(
-    Schema.Literals(["retry-connect", "retry-full", "rotate-and-retry-full", "fallback-http", "fail"]),
-  ),
 }) {}
 
 export class InvalidProviderOutputReason extends Schema.Class<InvalidProviderOutputReason>(

packages/ai/test/provider-error.test.ts

@@ -69,10 +69,10 @@ describe("provider error classification", () => {
 
   test("classifies V1 overloaded provider codes", () => {
     expect(
-      ['{"code":"resource_exhausted"}', '{"code":"service_unavailable"}', '{"code":"slow_down"}'].map(
+      ['{"code":"resource_exhausted"}', '{"code":"service_unavailable"}'].map(
         (message) => classifyProviderFailure({ message })._tag,
       ),
-    ).toEqual(["ProviderInternal", "ProviderInternal", "ProviderInternal"])
+    ).toEqual(["ProviderInternal", "ProviderInternal"])
   })
 
   test("classifies transient client statuses as provider internal", () => {

packages/ai/test/provider/openai-responses.test.ts

@@ -11,7 +11,6 @@ import {
   ToolCallPart,
   ToolDefinition,
   ToolResultPart,
-  TransportReason,
   Usage,
 } from "../../src"
 import { Auth, LLMClient, RequestExecutor, WebSocketExecutor } from "../../src/route"
@@ -289,114 +288,6 @@ describe("OpenAI Responses route", () => {
     }),
   )
 
-  it.effect("terminates WebSocket control events without waiting for the socket to close", () =>
-    Effect.gen(function* () {
-      const events = [
-        { type: "error", error: { code: "slow_down", message: "Try later" } },
-        {
-          type: "error",
-          status_code: 429,
-          message: "Rate limited",
-          headers: { "retry-after": 1, "x-request-id": "request", cached: false, invalid: [] },
-        },
-        {
-          type: "response.failed",
-          response: { error: { code: "server_error", message: "Unavailable" } },
-        },
-        { type: "error", status: "not-a-status", message: "Malformed status" },
-      ]
-
-      const errors = yield* Effect.forEach(events, (event) =>
-        LLMClient.generate(
-          LLM.request({
-            model: OpenAI.configure({ baseURL: "https://api.openai.test/v1/", apiKey: "test" }).responsesWebSocket(
-              "gpt-4.1-mini",
-            ),
-            prompt: "Say hello.",
-          }),
-        ).pipe(
-          Effect.provide(
-            LLMClient.layer.pipe(
-              Layer.provide(
-                Layer.mergeAll(
-                  Layer.succeed(
-                    RequestExecutor.Service,
-                    RequestExecutor.Service.of({ execute: () => Effect.die("unexpected HTTP request") }),
-                  ),
-                  Layer.succeed(
-                    WebSocketExecutor.Service,
-                    WebSocketExecutor.Service.of({
-                      open: () =>
-                        Effect.succeed({
-                          sendText: () => Effect.void,
-                          messages: Stream.make(ProviderShared.encodeJson(event)).pipe(Stream.concat(Stream.never)),
-                          close: Effect.void,
-                        }),
-                    }),
-                  ),
-                ),
-              ),
-            ),
-          ),
-          Effect.flip,
-        ),
-      )
-
-      expect(errors.map((error) => error.reason._tag)).toEqual([
-        "ProviderInternal",
-        "RateLimit",
-        "ProviderInternal",
-        "UnknownProvider",
-      ])
-    }),
-  )
-
-  it.effect("marks post-send WebSocket failures with delivery state", () =>
-    Effect.gen(function* () {
-      const failure = new AIError({
-        module: "test",
-        method: "receive",
-        reason: new TransportReason({ message: "socket closed", phase: "close" }),
-      })
-      const streams = [
-        Stream.fail(failure),
-        Stream.make(ProviderShared.encodeJson({ type: "response.created" })).pipe(Stream.concat(Stream.fail(failure))),
-      ]
-      const deps = Layer.mergeAll(
-        Layer.succeed(
-          RequestExecutor.Service,
-          RequestExecutor.Service.of({ execute: () => Effect.die("unexpected HTTP request") }),
-        ),
-        Layer.succeed(
-          WebSocketExecutor.Service,
-          WebSocketExecutor.Service.of({
-            open: () =>
-              Effect.succeed({
-                sendText: () => Effect.void,
-                messages: streams.shift() ?? Stream.die("unexpected WebSocket open"),
-                close: Effect.void,
-              }),
-          }),
-        ),
-      )
-      const model = OpenAI.configure({ baseURL: "https://api.openai.test/v1/", apiKey: "test" }).responsesWebSocket(
-        "gpt-4.1-mini",
-      )
-
-      const errors = yield* Effect.forEach(["first", "second"], (prompt) =>
-        LLMClient.generate(LLM.request({ model, prompt })).pipe(
-          Effect.provide(LLMClient.layer.pipe(Layer.provide(deps))),
-          Effect.flip,
-        ),
-      )
-
-      expect(errors.map((error) => error.reason)).toEqual([
-        expect.objectContaining({ _tag: "Transport", phase: "close", delivery: "ambiguous" }),
-        expect.objectContaining({ _tag: "Transport", phase: "close", delivery: "accepted" }),
-      ])
-    }),
-  )
-
   it.effect("fails immediately when WebSocket is already closed", () =>
     Effect.gen(function* () {
       const error = yield* WebSocketExecutor.fromWebSocket(
@@ -406,7 +297,6 @@ describe("OpenAI Responses route", () => {
       ).pipe(Effect.flip)
 
       expect(error.message).toContain("closed before opening")
-      expect(error.reason).toMatchObject({ _tag: "Transport", phase: "connect", delivery: "not-sent" })
     }),
   )
 

packages/ai/test/schema.test.ts

@@ -11,7 +11,6 @@ import {
   LanguageModel,
   ModelID,
   ProviderID,
-  TransportReason,
   Usage,
 } from "../src/schema"
 import { ProviderShared } from "../src/protocols/shared"
@@ -109,21 +108,3 @@ test("AI errors expose the shared runtime tag", async () => {
     await Effect.runPromise(Effect.fail(error).pipe(Effect.catchTag("AI.Error", () => Effect.succeed("caught")))),
   ).toBe("caught")
 })
-
-test("transport errors serialize execution facts", () => {
-  const reason = new TransportReason({
-    message: "connection closed",
-    phase: "receive",
-    delivery: "ambiguous",
-    recovery: "fail",
-  })
-
-  expect(Schema.encodeSync(TransportReason)(reason)).toEqual({
-    _tag: "Transport",
-    message: "connection closed",
-    phase: "receive",
-    delivery: "ambiguous",
-    recovery: "fail",
-  })
-  expect(Schema.decodeUnknownSync(TransportReason)(Schema.encodeSync(TransportReason)(reason))).toEqual(reason)
-})

packages/core/src/bus.ts

@@ -3,7 +3,7 @@ export * as Bus from "./bus"
 import { Cause, Context, DateTime, Effect, Layer, Option, PubSub, Schema, Stream } from "effect"
 import { Event } from "@opencode-ai/schema/event"
 import type { EventLog } from "@opencode-ai/schema/event-log"
-import { and, asc, eq, gt, inArray, lte, sql } from "drizzle-orm"
+import { and, asc, eq, gt, lte, sql } from "drizzle-orm"
 import { Database } from "./database/database"
 import { EventSequenceTable, EventTable } from "./event/sql"
 import { Location } from "./location"
@@ -134,8 +134,6 @@ export interface Interface {
     readonly after?: number
     readonly follow?: boolean
   }) => Stream.Stream<LogItem>
-  /** Latest committed seq per aggregate. Aggregates without events are absent. */
-  readonly sequences: (aggregateIDs: ReadonlyArray<string>) => Effect.Effect<ReadonlyMap<string, Event.Seq>>
   /** @deprecated Use `subscribe()` and consume the returned stream. */
   readonly listen: (listener: Subscriber) => Effect.Effect<Unsubscribe>
   readonly project: <D extends Event.Definition>(definition: D, projector: Subscriber<D>) => Effect.Effect<void>
@@ -657,19 +655,6 @@ export const layerWith = (options?: LayerOptions) =>
           }),
         )
 
-      const sequences = (aggregateIDs: ReadonlyArray<string>): Effect.Effect<ReadonlyMap<string, Event.Seq>> => {
-        if (aggregateIDs.length === 0) return Effect.succeed(new Map())
-        return db
-          .select({ aggregateID: EventSequenceTable.aggregate_id, seq: EventSequenceTable.seq })
-          .from(EventSequenceTable)
-          .where(inArray(EventSequenceTable.aggregate_id, Array.from(aggregateIDs)))
-          .all()
-          .pipe(
-            Effect.orDie,
-            Effect.map((rows) => new Map(rows.map((row) => [row.aggregateID, Event.Seq.make(row.seq)]))),
-          )
-      }
-
       const listen = (listener: Subscriber): Effect.Effect<Unsubscribe> =>
         Effect.sync(() => {
           listeners.push(listener)
@@ -691,7 +676,6 @@ export const layerWith = (options?: LayerOptions) =>
         publish,
         subscribe,
         log,
-        sequences,
         listen,
         project,
         replay,

packages/core/src/catalog.ts

@@ -52,7 +52,6 @@ export interface Interface extends State.Transformable<Draft> {
     readonly all: () => Effect.Effect<Model.Info[]>
     readonly available: () => Effect.Effect<Model.Info[]>
     readonly default: () => Effect.Effect<Model.Info | undefined>
-    readonly small: (providerID: Provider.ID) => Effect.Effect<Model.Info | undefined>
   }
 }
 
@@ -206,59 +205,6 @@ const layer = Layer.effect(
 
           return (yield* result.model.available())[0]
         }),
-
-        small: Effect.fn("Catalog.model.small")(function* (providerID) {
-          const record = state.get().providers.get(providerID)
-          if (!record) return
-          const provider = record.provider
-
-          // TODO: Remove these provider-specific assumptions once model syncing reliably reports available deployments.
-          if (providerID === Provider.ID.azure || providerID === Provider.ID.make("azure-cognitive-services")) {
-            return
-          }
-
-          if (providerID === Provider.ID.opencode) {
-            const gpt5Nano = record.models.get(Model.ID.make("gpt-5-nano"))
-            if (gpt5Nano?.enabled && gpt5Nano.status === "active") return projectModel(gpt5Nano, provider)
-          }
-
-          const candidates = pipe(
-            Array.fromIterable(record.models.values()),
-            Array.filter(
-              (model) =>
-                model.providerID === providerID &&
-                model.enabled &&
-                model.status === "active" &&
-                model.capabilities.input.some((item) => item.startsWith("text")) &&
-                model.capabilities.output.some((item) => item.startsWith("text")),
-            ),
-            Array.map((model) => ({
-              model,
-              cost: model.cost[0] ? model.cost[0].input + model.cost[0].output : 999,
-              age: (Date.now() - model.time.released) / (1000 * 60 * 60 * 24 * 30),
-              small: SMALL_MODEL_RE.test(`${model.id} ${model.family ?? ""} ${model.name}`.toLowerCase()),
-            })),
-            Array.filter((item) => item.cost > 0 && item.age <= 18),
-          )
-
-          const pick = (items: typeof candidates) => {
-            if (!Array.isReadonlyArrayNonEmpty(items)) return
-            const maxCost = Math.max(...items.map((item) => item.cost), 0.01)
-            const maxAge = Math.max(...items.map((item) => item.age), 0.01)
-            const selected = Array.min(
-              items,
-              Order.mapInput(
-                Order.Number,
-                (item: (typeof candidates)[number]) =>
-                  (item.cost / maxCost) * 0.8 + (item.age / maxAge) * 0.2,
-              ),
-            )
-            return projectModel(selected.model, provider)
-          }
-
-          const small = candidates.filter((item) => item.small)
-          return pick(small.length > 0 ? small : candidates)
-        }),
       },
     }
 
@@ -266,6 +212,4 @@ const layer = Layer.effect(
   }),
 )
 
-const SMALL_MODEL_RE = /\b(nano|flash|lite|mini|haiku|small|fast)\b/
-
 export const node = makeLocationNode({ service: Service, layer, deps: [Bus.node, Integration.node] })

packages/core/src/formatter.ts

@@ -1,6 +1,6 @@
 export * as Formatter from "./formatter"
 
-import { Context, Effect, Layer, Schema } from "effect"
+import { Context, Effect, Layer } from "effect"
 import { ChildProcess } from "effect/unstable/process"
 import path from "path"
 import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
@@ -11,16 +11,7 @@ import { Config } from "./config"
 import { Location } from "./location"
 import { make, type Info } from "./formatter/builtins"
 
-export const Status = Schema.Struct({
-  name: Schema.String,
-  extensions: Schema.Array(Schema.String),
-  enabled: Schema.Boolean,
-}).annotate({ identifier: "FormatterStatus" })
-export type Status = typeof Status.Type
-
 export interface Interface {
-  readonly init: () => Effect.Effect<void>
-  readonly status: () => Effect.Effect<Status[]>
   readonly file: (filepath: string) => Effect.Effect<boolean>
 }
 
@@ -84,23 +75,6 @@ const layer = Layer.effect(
       return result
     })
 
-    const init = Effect.fn("Formatter.init")(function* () {
-      yield* load
-    })
-
-    const status = Effect.fn("Formatter.status")(function* () {
-      yield* load
-      return yield* Effect.forEach(formatters, (formatter) =>
-        command(formatter).pipe(
-          Effect.map((enabled) => ({
-            name: formatter.name,
-            extensions: [...formatter.extensions],
-            enabled: enabled !== false,
-          })),
-        ),
-      )
-    })
-
     const file = Effect.fn("Formatter.file")(function* (filepath: string) {
       yield* load
       const matching = formatters.filter((formatter) =>
@@ -143,7 +117,7 @@ const layer = Layer.effect(
       return false
     })
 
-    return Service.of({ init, status, file })
+    return Service.of({ file })
   }),
 )
 

packages/core/src/git.ts

@@ -1,8 +1,7 @@
 export * as Git from "./git"
 
 import path from "path"
-import { randomUUID } from "crypto"
-import { Context, Effect, Layer, Schema, Stream } from "effect"
+import { Context, Effect, Layer, Schema } from "effect"
 import { ChildProcess } from "effect/unstable/process"
 import { AbsolutePath, RelativePath } from "./schema"
 import { FSUtil } from "@opencode-ai/util/fs-util"
@@ -36,9 +35,6 @@ const snapshotConfig = `[core]
 	threads = true
 `
 
-export const ChangeSet = Schema.String.pipe(Schema.brand("Git.ChangeSet"))
-export type ChangeSet = typeof ChangeSet.Type
-
 export const TreeID = Schema.String.pipe(Schema.brand("Git.TreeID"))
 export type TreeID = typeof TreeID.Type
 
@@ -73,13 +69,6 @@ export class WorktreeError extends Schema.TaggedErrorClass<WorktreeError>()("Git
   cause: Schema.optional(Schema.Defect()),
 }) {}
 
-export class PatchError extends Schema.TaggedErrorClass<PatchError>()("Git.PatchError", {
-  operation: Schema.Literals(["capture", "apply", "reset"]),
-  directory: AbsolutePath,
-  message: Schema.String,
-  cause: Schema.optional(Schema.Defect()),
-}) {}
-
 export interface Interface {
   readonly repo: {
     readonly discover: (input: AbsolutePath) => Effect.Effect<Repository | undefined>
@@ -116,20 +105,6 @@ export interface Interface {
     ) => Effect.Effect<void, OperationError>
     readonly resetHard: (repository: Repository, revision: string) => Effect.Effect<void, OperationError>
   }
-  readonly change: {
-    readonly capture: (input: { repository: Repository; path: AbsolutePath }) => Effect.Effect<ChangeSet, PatchError>
-    readonly apply: (input: {
-      repository: Repository
-      path: AbsolutePath
-      changes: ChangeSet
-    }) => Effect.Effect<void, PatchError>
-    readonly discard: (input: {
-      repository: Repository
-      path: AbsolutePath
-      index: "preserve" | "reset"
-      untracked: "preserve" | "remove"
-    }) => Effect.Effect<void, PatchError>
-  }
   readonly worktree: {
     readonly create: (input: {
       repository: Repository
@@ -175,17 +150,10 @@ export interface Interface {
       context?: number
       paths?: readonly RelativePath[]
     }) => Effect.Effect<readonly File.Diff[], OperationError>
-    readonly preview: (input: {
-      repository: Repository
-      current: TreeID
-      files: ReadonlyMap<RelativePath, TreeID>
-      context?: number
-    }) => Effect.Effect<readonly File.Diff[], OperationError>
     readonly restore: (input: {
       repository: Repository
       files: ReadonlyMap<RelativePath, TreeID>
     }) => Effect.Effect<void, OperationError>
-    readonly checkout: (input: { repository: Repository; tree: TreeID }) => Effect.Effect<void, OperationError>
   }
 }
 
@@ -657,58 +625,6 @@ const layer = Layer.effect(
       return { mode: match[1], object: match[2] }
     })
 
-    const preview = Effect.fn("Git.tree.preview")(
-      (input: {
-        repository: Repository
-        current: TreeID
-        files: ReadonlyMap<RelativePath, TreeID>
-        context?: number
-      }) =>
-        locked(
-          input.repository,
-          Effect.gen(function* () {
-            const index = path.join(input.repository.gitDirectory, `preview-${randomUUID()}.index`)
-            const env = { GIT_INDEX_FILE: index }
-            return yield* Effect.gen(function* () {
-              yield* repositoryOperation("diff", input.repository, ["read-tree", input.current], { env })
-              yield* Effect.forEach(
-                input.files,
-                ([file, tree]) =>
-                  Effect.gen(function* () {
-                    const source = yield* entry(input.repository, tree, file)
-                    if (!source) {
-                      yield* repositoryOperation(
-                        "diff",
-                        input.repository,
-                        ["update-index", "--force-remove", "--", file],
-                        { env },
-                      )
-                      return
-                    }
-                    yield* repositoryOperation(
-                      "diff",
-                      input.repository,
-                      ["update-index", "--add", "--cacheinfo", source.mode, source.object, file],
-                      { env },
-                    )
-                  }),
-                { discard: true },
-              )
-              const target = TreeID.make(
-                (yield* repositoryOperation("diff", input.repository, ["write-tree"], { env })).text.trim(),
-              )
-              return yield* treeDiff({
-                repository: input.repository,
-                from: input.current,
-                to: target,
-                context: input.context,
-                paths: Array.from(input.files.keys()),
-              })
-            }).pipe(Effect.ensuring(fs.remove(index).pipe(Effect.catch(() => Effect.void))))
-          }),
-        ),
-    )
-
     const restore = Effect.fn("Git.tree.restore")(
       (input: { repository: Repository; files: ReadonlyMap<RelativePath, TreeID> }) =>
         locked(
@@ -738,142 +654,6 @@ const layer = Layer.effect(
         ),
     )
 
-    const checkoutTree = Effect.fn("Git.tree.checkout")((input: { repository: Repository; tree: TreeID }) =>
-      locked(
-        input.repository,
-        Effect.gen(function* () {
-          yield* repositoryOperation("restore", input.repository, ["read-tree", input.tree])
-          yield* repositoryOperation("restore", input.repository, ["checkout-index", "--all", "--force"])
-        }),
-      ),
-    )
-
-    const capture = Effect.fn("Git.change.capture")(function* (input: { repository: Repository; path: AbsolutePath }) {
-      const scope = path.relative(input.repository.worktree, input.path).replaceAll("\\", "/") || "."
-      const tracked = yield* execute(
-        input.repository.worktree,
-        proc,
-      )(["diff", "--binary", "HEAD", "--", scope]).pipe(
-        Effect.mapError(
-          (cause) => new PatchError({ operation: "capture", directory: input.path, message: cause.message, cause }),
-        ),
-      )
-      if (tracked.exitCode !== 0) {
-        return yield* new PatchError({
-          operation: "capture",
-          directory: input.path,
-          message: tracked.stderr.trim() || tracked.text.trim() || "Failed to capture tracked changes",
-        })
-      }
-
-      const untracked = yield* execute(
-        input.repository.worktree,
-        proc,
-      )(["ls-files", "--others", "--exclude-standard", "-z", "--", scope]).pipe(
-        Effect.mapError(
-          (cause) => new PatchError({ operation: "capture", directory: input.path, message: cause.message, cause }),
-        ),
-      )
-      if (untracked.exitCode !== 0) {
-        return yield* new PatchError({
-          operation: "capture",
-          directory: input.path,
-          message: untracked.stderr.trim() || untracked.text.trim() || "Failed to list untracked changes",
-        })
-      }
-
-      const created = yield* Effect.forEach(untracked.text.split("\0").filter(Boolean), (file) =>
-        execute(
-          input.repository.worktree,
-          proc,
-        )(["diff", "--binary", "--no-index", "--", "/dev/null", file]).pipe(
-          Effect.mapError(
-            (cause) => new PatchError({ operation: "capture", directory: input.path, message: cause.message, cause }),
-          ),
-          Effect.flatMap((result) =>
-            // git diff --no-index returns 1 when differences were found.
-            result.exitCode === 0 || result.exitCode === 1
-              ? Effect.succeed(result.text)
-              : Effect.fail(
-                  new PatchError({
-                    operation: "capture",
-                    directory: input.path,
-                    message:
-                      result.stderr.trim() || result.text.trim() || `Failed to capture untracked change: ${file}`,
-                  }),
-                ),
-          ),
-        ),
-      )
-      return ChangeSet.make([tracked.text, ...created].filter(Boolean).join("\n"))
-    })
-
-    const apply = Effect.fn("Git.change.apply")(function* (input: {
-      repository: Repository
-      path: AbsolutePath
-      changes: ChangeSet
-    }) {
-      const result = yield* proc
-        .run(
-          ChildProcess.make("git", ["apply", "-"], {
-            cwd: input.path,
-            extendEnv: true,
-            stdin: Stream.make(new TextEncoder().encode(input.changes)),
-          }),
-        )
-        .pipe(
-          Effect.mapError(
-            (cause) => new PatchError({ operation: "apply", directory: input.path, message: cause.message, cause }),
-          ),
-        )
-      if (result.exitCode === 0) return
-      return yield* new PatchError({
-        operation: "apply",
-        directory: input.path,
-        message:
-          result.stderr.toString("utf8").trim() || result.stdout.toString("utf8").trim() || "Failed to apply changes",
-      })
-    })
-
-    const discard = Effect.fn("Git.change.discard")(function* (input: {
-      repository: Repository
-      path: AbsolutePath
-      index: "preserve" | "reset"
-      untracked: "preserve" | "remove"
-    }) {
-      const scope = path.relative(input.repository.worktree, input.path).replaceAll("\\", "/") || "."
-      const restore = yield* execute(
-        input.repository.worktree,
-        proc,
-      )(input.index === "reset" ? ["checkout", "HEAD", "--", scope] : ["checkout", "--", scope]).pipe(
-        Effect.mapError(
-          (cause) => new PatchError({ operation: "reset", directory: input.path, message: cause.message, cause }),
-        ),
-      )
-      if (restore.exitCode !== 0) {
-        return yield* new PatchError({
-          operation: "reset",
-          directory: input.path,
-          message: restore.stderr.trim() || restore.text.trim() || "Failed to restore tracked changes",
-        })
-      }
-      if (input.untracked === "preserve") return
-      const clean = yield* execute(
-        input.repository.worktree,
-        proc,
-      )(["clean", "-fd", "--", scope]).pipe(
-        Effect.mapError(
-          (cause) => new PatchError({ operation: "reset", directory: input.path, message: cause.message, cause }),
-        ),
-      )
-      if (clean.exitCode === 0) return
-      return yield* new PatchError({
-        operation: "reset",
-        directory: input.path,
-        message: clean.stderr.trim() || clean.text.trim() || "Failed to clean untracked changes",
-      })
-    })
-
     const worktreeRun = Effect.fnUntraced(function* (
       operation: "create" | "remove" | "list",
       repository: Repository,
@@ -949,7 +729,6 @@ const layer = Layer.effect(
       remote: { get: remote },
       history: { head, branch, defaultRemoteBranch: remoteHead, rootCommits: roots },
       sync: { fetchRemotes: fetch, fetchBranch, checkoutRemoteBranch: checkout, resetHard: reset },
-      change: { capture, apply, discard },
       worktree: { create: worktreeCreate, remove: worktreeRemove, list: worktreeList },
       index: { refresh, ignored },
       tree: {
@@ -957,9 +736,7 @@ const layer = Layer.effect(
         write: writeTree,
         files: treeFiles,
         diff: treeDiff,
-        preview,
         restore,
-        checkout: checkoutTree,
       },
     })
   }),

packages/core/src/session/runner/retry.ts

@@ -18,9 +18,8 @@ export function isRetryable(error: AIError) {
   switch (error.reason._tag) {
     case "RateLimit":
     case "ProviderInternal":
-      return true
     case "Transport":
-      return error.reason.delivery === undefined || error.reason.delivery === "not-sent"
+      return true
     case "InvalidProviderOutput":
       return error.reason.classification === "incomplete-stream"
     case "Authentication":

packages/core/src/shell/select.ts

@@ -1,15 +1,12 @@
 export * as ShellSelect from "./select"
 
 import path from "path"
-import { spawn, type ChildProcess } from "child_process"
 import { readFile } from "fs/promises"
 import { statSync } from "fs"
-import { setTimeout } from "node:timers/promises"
 import { Schema } from "effect"
 import { FSUtil } from "@opencode-ai/util/fs-util"
 import { which } from "../util/which"
 
-const SIGKILL_TIMEOUT_MS = 200
 const META: Record<string, { deny?: boolean; login?: boolean; posix?: boolean; ps?: boolean }> = {
   bash: { login: true, posix: true },
   dash: { login: true, posix: true },
@@ -33,37 +30,6 @@ export const Options = Schema.Struct({
 })
 export type Options = typeof Options.Type
 
-export async function killTree(proc: ChildProcess, opts?: { exited?: () => boolean }): Promise<void> {
-  const pid = proc.pid
-  if (!pid || opts?.exited?.()) return
-
-  if (process.platform === "win32") {
-    await new Promise<void>((resolve) => {
-      const killer = spawn("taskkill", ["/pid", String(pid), "/f", "/t"], {
-        stdio: "ignore",
-        windowsHide: true,
-      })
-      killer.once("exit", () => resolve())
-      killer.once("error", () => resolve())
-    })
-    return
-  }
-
-  try {
-    process.kill(-pid, "SIGTERM")
-    await setTimeout(SIGKILL_TIMEOUT_MS)
-    if (!opts?.exited?.()) {
-      process.kill(-pid, "SIGKILL")
-    }
-  } catch {
-    proc.kill("SIGTERM")
-    await setTimeout(SIGKILL_TIMEOUT_MS)
-    if (!opts?.exited?.()) {
-      proc.kill("SIGKILL")
-    }
-  }
-}
-
 function stat(file: string) {
   return statSync(file, { throwIfNoEntry: false }) ?? undefined
 }

packages/core/src/snapshot.ts

@@ -16,7 +16,7 @@ import { Hash } from "@opencode-ai/util/hash"
 export { ID }
 
 export class Error extends Schema.TaggedErrorClass<Error>()("Snapshot.Error", {
-  operation: Schema.Literals(["capture", "files", "diff", "preview", "restore"]),
+  operation: Schema.Literals(["capture", "files", "diff", "restore"]),
   message: Schema.String,
   cause: Schema.optional(Schema.Defect()),
 }) {}
@@ -36,10 +36,6 @@ export interface RestoreInput {
   readonly files: ReadonlyMap<RelativePath, ID>
 }
 
-export interface PreviewInput extends RestoreInput {
-  readonly context?: number
-}
-
 export interface Interface {
   /**
    * Capture the current Location-scoped filesystem state as a content-addressed
@@ -60,25 +56,11 @@ export interface Interface {
    */
   readonly diff: (input: DiffInput) => Effect.Effect<readonly File.Diff[], Error>
 
-  /**
-   * Preview the filesystem result of a selective restore without modifying the
-   * worktree. Each project-relative path maps to the tree it would be restored
-   * from.
-   */
-  readonly preview: (input: PreviewInput) => Effect.Effect<readonly File.Diff[], Error>
-
   /**
    * Restore selected project-relative paths from their associated trees. A path
    * absent from its selected tree is removed; paths outside the map are untouched.
-   */
+  */
   readonly restore: (input: RestoreInput) => Effect.Effect<void, Error>
-
-  /**
-   * Replace the snapshot index with a captured tree and check out all its entries.
-   * Files absent from the tree remain untouched. Prefer selective `restore` when
-   * only known paths should change.
-   */
-  readonly checkout: (snapshot: ID) => Effect.Effect<void, Error>
 }
 
 export class Service extends Context.Service<Service, Interface>()("@opencode/Snapshot") {}
@@ -176,59 +158,26 @@ const layer = Layer.effect(
         .pipe(Effect.mapError((cause) => failure("diff", cause)))
     })
 
-    const plan = Effect.fnUntraced(function* (
-      operation: "preview" | "restore",
-      worktree: AbsolutePath,
-      input: RestoreInput,
-    ) {
+    const plan = Effect.fnUntraced(function* (worktree: AbsolutePath, input: RestoreInput) {
       const files = new Map<RelativePath, Git.TreeID>()
       for (const [file, snapshot] of input.files) {
         const absolute = path.resolve(worktree, file)
         if (!FSUtil.contains(worktree, absolute))
-          return yield* new Error({ operation, message: `Path escapes the project: ${file}` })
+          return yield* new Error({ operation: "restore", message: `Path escapes the project: ${file}` })
         files.set(file, Git.TreeID.make(snapshot))
       }
       return files
     })
 
-    const preview = Effect.fn("Snapshot.preview")(function* (input: PreviewInput) {
-      if (!(yield* enabled())) return yield* new Error({ operation: "preview", message: "Snapshots are disabled" })
-      const repo = yield* repository.pipe(Effect.mapError((cause) => failure("preview", cause)))
-      const files = yield* plan("preview", repo.worktree, input)
-      const current = yield* git.tree
-        .capture({
-          repository: repo.snapshotRepository,
-          scopes: Array.from(files.keys()),
-          ignores: repo.source,
-          maximumUntrackedFileBytes: 2 * 1024 * 1024,
-        })
-        .pipe(Effect.mapError((cause) => failure("preview", cause)))
-      return yield* git.tree
-        .preview({
-          repository: repo.snapshotRepository,
-          current,
-          files,
-          context: input.context,
-        })
-        .pipe(Effect.mapError((cause) => failure("preview", cause)))
-    })
-
     const restore = Effect.fn("Snapshot.restore")(function* (input: RestoreInput) {
       if (!(yield* enabled())) return yield* new Error({ operation: "restore", message: "Snapshots are disabled" })
       const repo = yield* repository.pipe(Effect.mapError((cause) => failure("restore", cause)))
       yield* git.tree
-        .restore({ repository: repo.snapshotRepository, files: yield* plan("restore", repo.worktree, input) })
+        .restore({ repository: repo.snapshotRepository, files: yield* plan(repo.worktree, input) })
         .pipe(Effect.mapError((cause) => failure("restore", cause)))
     })
 
-    const checkout = Effect.fn("Snapshot.checkout")(function* (snapshot: ID) {
-      const repo = yield* repository.pipe(Effect.mapError((cause) => failure("restore", cause)))
-      yield* git.tree
-        .checkout({ repository: repo.snapshotRepository, tree: Git.TreeID.make(snapshot) })
-        .pipe(Effect.mapError((cause) => failure("restore", cause)))
-    })
-
-    return Service.of({ capture, files, diff, preview, restore, checkout })
+    return Service.of({ capture, files, diff, restore })
   }).pipe(Effect.withSpan("Snapshot.boot")),
 )
 
@@ -244,9 +193,7 @@ export const noopLayer = Layer.succeed(
     capture: () => Effect.succeed(undefined),
     files: () => Effect.succeed([]),
     diff: () => Effect.succeed([]),
-    preview: () => Effect.succeed([]),
     restore: () => Effect.void,
-    checkout: () => Effect.void,
   }),
 )
 

packages/core/test/bus.test.ts

@@ -1298,24 +1298,4 @@ describe("Bus", () => {
     }),
   )
 
-  it.effect("sequences returns the latest committed seq per aggregate and omits unknown aggregates", () =>
-    Effect.gen(function* () {
-      const bus = yield* Bus.Service
-      const first = Session.ID.create()
-      const second = Session.ID.create()
-      yield* bus.publish(DurableMessage, durableData(first, "zero"))
-      yield* bus.publish(DurableMessage, durableData(first, "one"))
-      yield* bus.publish(DurableMessage, durableData(second, "zero"))
-
-      const sequences = yield* bus.sequences([first, second, Session.ID.create()])
-
-      expect(sequences).toEqual(
-        new Map([
-          [first, Event.Seq.make(1)],
-          [second, Event.Seq.make(0)],
-        ]),
-      )
-      expect(yield* bus.sequences([])).toEqual(new Map())
-    }),
-  )
 })

packages/core/test/catalog.test.ts

@@ -1,5 +1,4 @@
 import { describe, expect } from "bun:test"
-import { Money } from "@opencode-ai/schema/money"
 import { Effect, Fiber, Layer, Stream } from "effect"
 import { TestClock } from "effect/testing"
 import { Catalog } from "@opencode-ai/core/catalog"
@@ -292,46 +291,4 @@ describe("Catalog", () => {
       })
     }),
   )
-
-  it.effect("small model prefers small keyword candidates before cost scoring", () =>
-    Effect.gen(function* () {
-      const catalog = yield* Catalog.Service
-      const providerID = Provider.ID.make("test")
-      yield* catalog.transform((catalog) => {
-        catalog.provider.update(providerID, () => {})
-        catalog.model.update(providerID, Model.ID.make("cheap-large"), (model) => {
-          model.capabilities.input = ["text"]
-          model.capabilities.output = ["text"]
-          model.cost = [
-            {
-              input: Money.USDPerMillionTokens.make(1),
-              output: Money.USDPerMillionTokens.make(1),
-              cache: {
-                read: Money.USDPerMillionTokens.zero,
-                write: Money.USDPerMillionTokens.zero,
-              },
-            },
-          ]
-          model.time.released = Date.now()
-        })
-        catalog.model.update(providerID, Model.ID.make("expensive-mini"), (model) => {
-          model.capabilities.input = ["text"]
-          model.capabilities.output = ["text"]
-          model.cost = [
-            {
-              input: Money.USDPerMillionTokens.make(10),
-              output: Money.USDPerMillionTokens.make(10),
-              cache: {
-                read: Money.USDPerMillionTokens.zero,
-                write: Money.USDPerMillionTokens.zero,
-              },
-            },
-          ]
-          model.time.released = Date.now()
-        })
-      })
-
-      expect((yield* catalog.model.small(providerID))?.id).toMatch("expensive-mini")
-    }),
-  )
 })

packages/core/test/formatter.test.ts

@@ -56,52 +56,22 @@ function withTemp<A, E, R>(body: (directory: string) => Effect.Effect<A, E, R>)
 }
 
 describe("Formatter", () => {
-  it.live("status() returns empty list when no formatters are configured", () =>
+  it.live("does not run formatters marked as disabled in config", () =>
     withTemp((directory) =>
-      Formatter.Service.use((formatter) => formatter.status()).pipe(Effect.provide(formatterLayer(directory))),
-    ),
-  )
-
-  it.live("status() returns built-in formatters when formatter is true", () =>
-    withTemp((directory) =>
-      Formatter.Service.use((formatter) =>
-        Effect.gen(function* () {
-          const statuses = yield* formatter.status()
-          const gofmt = statuses.find((item) => item.name === "gofmt")
-          expect(gofmt).toBeDefined()
-          expect(gofmt?.extensions).toContain(".go")
-        }),
-      ).pipe(Effect.provide(formatterLayer(directory, true))),
-    ),
-  )
-
-  it.live("status() keeps built-in formatters when config object is provided", () =>
-    withTemp((directory) =>
-      Formatter.Service.use((formatter) =>
-        Effect.gen(function* () {
-          const statuses = yield* formatter.status()
-          expect(statuses.find((item) => item.name === "gofmt")?.extensions).toContain(".go")
-          expect(statuses.find((item) => item.name === "mix")).toBeDefined()
-        }),
-      ).pipe(Effect.provide(formatterLayer(directory, { gofmt: {} }))),
-    ),
-  )
-
-  it.live("status() excludes formatters marked as disabled in config", () =>
-    withTemp((directory) =>
-      Formatter.Service.use((formatter) =>
-        Effect.gen(function* () {
-          const statuses = yield* formatter.status()
-          expect(statuses.find((item) => item.name === "gofmt")).toBeUndefined()
-          expect(statuses.find((item) => item.name === "mix")).toBeDefined()
-        }),
-      ).pipe(Effect.provide(formatterLayer(directory, { gofmt: { disabled: true } }))),
-    ),
-  )
-
-  it.live("service initializes without error", () =>
-    withTemp((directory) =>
-      Formatter.Service.use((formatter) => formatter.init()).pipe(Effect.provide(formatterLayer(directory))),
+      Effect.gen(function* () {
+        const file = path.join(directory, "test.disabled")
+        expect(yield* Formatter.Service.use((formatter) => formatter.file(file))).toBe(false)
+      }).pipe(
+        Effect.provide(
+          formatterLayer(directory, {
+            disabled: {
+              disabled: true,
+              command: [process.execPath, "-e", "process.exit(0)", "$FILE"],
+              extensions: [".disabled"],
+            },
+          }),
+        ),
+      ),
     ),
   )
 
@@ -115,22 +85,29 @@ describe("Formatter", () => {
     ),
   )
 
-  it.live("status() initializes formatter state per directory", () =>
-    Effect.acquireUseRelease(
-      Effect.promise(() => Promise.all([tmpdir(), tmpdir()])),
-      ([off, on]) =>
+  it.live("loads formatter state per directory", () =>
+    withTemp((off) =>
+      withTemp((on) =>
         Effect.gen(function* () {
-          const disabled = yield* Formatter.Service.use((formatter) => formatter.status()).pipe(
-            Effect.provide(formatterLayer(off.path, false)),
+          const offFile = path.join(off, "test.isolated")
+          const onFile = path.join(on, "test.isolated")
+          const disabled = yield* Formatter.Service.use((formatter) => formatter.file(offFile)).pipe(
+            Effect.provide(formatterLayer(off, false)),
           )
-          const enabled = yield* Formatter.Service.use((formatter) => formatter.status()).pipe(
-            Effect.provide(formatterLayer(on.path, true)),
+          const enabled = yield* Formatter.Service.use((formatter) => formatter.file(onFile)).pipe(
+            Effect.provide(
+              formatterLayer(on, {
+                isolated: {
+                  command: [process.execPath, "-e", "process.exit(0)", "$FILE"],
+                  extensions: [".isolated"],
+                },
+              }),
+            ),
           )
-          expect(disabled).toEqual([])
-          expect(enabled.find((item) => item.name === "gofmt")).toBeDefined()
+          expect(disabled).toBe(false)
+          expect(enabled).toBe(true)
         }),
-      (directories) =>
-        Effect.promise(() => Promise.all(directories.map((tmp) => tmp[Symbol.asyncDispose]())).then(() => undefined)),
+      ),
     ),
   )
 

packages/core/test/generate.test.ts

@@ -30,7 +30,6 @@ const catalog = Layer.mock(Catalog.Service, {
     all: () => Effect.die("unused"),
     available: () => Effect.die("unused"),
     default: () => Effect.die("unused"),
-    small: () => Effect.die("unused"),
   },
 })
 const integrations = Layer.mock(Integration.Service, {

packages/core/test/git.test.ts

@@ -185,9 +185,6 @@ describe("Git trees", () => {
       ])
 
       const files = new Map([[RelativePath.make("scope/tracked.txt"), before]])
-      const preview = yield* git.tree.preview({ repository, current: after, files, context: 1 })
-      expect(preview).toHaveLength(1)
-      expect(preview[0]?.file).toBe(RelativePath.make("scope/tracked.txt"))
       yield* git.tree.restore({ repository, files })
       expect(yield* read(path.join(root.path, "scope", "tracked.txt"))).toBe("one\n")
       expect(yield* read(path.join(root.path, "scope", "added.txt"))).toBe("added\n")

packages/core/test/plugin/provider-opencode.test.ts

@@ -484,31 +484,4 @@ describe("OpencodePlugin", () => {
       }),
     ),
   )
-
-  it.effect("prefers gpt-5-nano as the opencode small model", () =>
-    Effect.gen(function* () {
-      const catalog = yield* Catalog.Service
-      const providerID = Provider.ID.opencode
-
-      yield* catalog.transform((catalog) => {
-        catalog.provider.update(providerID, () => {})
-        catalog.model.update(providerID, Model.ID.make("cheap-mini"), (model) => {
-          model.capabilities.input = ["text"]
-          model.capabilities.output = ["text"]
-          model.cost = [...cost(1, 1)]
-          model.time.released = Date.now()
-        })
-        catalog.model.update(providerID, Model.ID.make("gpt-5-nano"), (model) => {
-          model.capabilities.input = ["text"]
-          model.capabilities.output = ["text"]
-          model.cost = [...cost(10, 10)]
-          model.time.released = Date.now()
-        })
-      })
-
-      const selected = yield* catalog.model.small(providerID)
-
-      expect(selected?.id).toBe(Model.ID.make("gpt-5-nano"))
-    }),
-  )
 })

packages/core/test/session-error.test.ts

@@ -110,26 +110,4 @@ describe("toSessionError", () => {
     expect(eligible.map(SessionRunnerRetry.isRetryable)).toEqual([true, true, true])
     expect(ineligible.map(SessionRunnerRetry.isRetryable)).toEqual([false, false, false, false, false, false, false])
   })
-
-  test("retries transport failures only when delivery is absent or not sent", () => {
-    const retryable = [
-      llm(new TransportReason({ message: "http transport" })),
-      llm(new TransportReason({ message: "connect failed", delivery: "not-sent", phase: "connect" })),
-    ]
-    const ineligible = [
-      llm(new TransportReason({ message: "send uncertain", delivery: "ambiguous", phase: "send" })),
-      llm(new TransportReason({ message: "response interrupted", delivery: "accepted", phase: "receive" })),
-      llm(
-        new TransportReason({
-          message: "continuation rejected",
-          delivery: "rejected",
-          recovery: "retry-full",
-          phase: "receive",
-        }),
-      ),
-    ]
-
-    expect(retryable.map(SessionRunnerRetry.isRetryable)).toEqual([true, true])
-    expect(ineligible.map(SessionRunnerRetry.isRetryable)).toEqual([false, false, false])
-  })
 })

packages/core/test/session-log.test.ts

@@ -41,17 +41,15 @@ describe("Session.log", () => {
   it.effect("replays public session events and marks synced at the aggregate watermark", () =>
     Effect.gen(function* () {
       const session = yield* Session.Service
-      const bus = yield* Bus.Service
       const created = yield* session.create({ location })
       yield* session.rename({ sessionID: created.id, title: "session.renamed" })
 
       const items = Array.from(yield* Stream.runCollect(session.log({ sessionID: created.id })))
-      const watermark = (yield* bus.sequences([created.id])).get(created.id)
 
       // Session creation commits a non-public durable event, so the marker's
       // seq covers more of the aggregate than the public events emitted.
       expect(items.map((item) => item.type)).toEqual(["session.renamed", "log.synced"])
-      expect(items.at(-1)).toEqual({ type: "log.synced", aggregateID: created.id, seq: watermark })
+      expect(items.at(-1)).toEqual({ type: "log.synced", aggregateID: created.id, seq: Event.Seq.make(1) })
     }),
   )
 

packages/core/test/session-runner-recorded.test.ts

@@ -102,7 +102,6 @@ const promptCatalog = Layer.mock(Catalog.Service, {
     all: () => Effect.succeed([]),
     available: () => Effect.succeed([]),
     default: () => Effect.succeed(undefined),
-    small: () => Effect.succeed(undefined),
   },
 })
 const runnerLayer = (llmClient: Layer.Layer<typeof LLMClient.Service>) =>

packages/core/test/session-runner.test.ts

@@ -362,7 +362,6 @@ const promptCatalog = Layer.mock(Catalog.Service, {
     all: () => Effect.succeed([]),
     available: () => Effect.succeed([]),
     default: () => Effect.succeed(undefined),
-    small: () => Effect.succeed(undefined),
   },
 })
 const runnerLayer = AppNodeBuilder.build(SessionRunnerLLM.node, [

packages/core/test/snapshot.test.ts

@@ -117,9 +117,6 @@ describe("Snapshot", () => {
               RelativePath.make("scope/tracked.txt"),
             ])
             const plan = new Map([[RelativePath.make("scope/tracked.txt"), before]])
-            const preview = yield* snapshot.preview({ files: plan, context: 1 })
-            expect(preview).toHaveLength(1)
-            expect(preview[0]?.file).toBe(RelativePath.make("scope/tracked.txt"))
             yield* snapshot.restore({ files: plan })
             expect(yield* read(path.join(location, "tracked.txt"))).toBe("one\n")
             expect(yield* read(path.join(location, "added.txt"))).toBe("added\n")
@@ -185,36 +182,6 @@ describe("Snapshot", () => {
       (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()),
     ),
   )
-
-  testEffect(Layer.empty).live("checks out a legacy revert snapshot without removing unrelated files", () =>
-    Effect.acquireUseRelease(
-      Effect.promise(() => tmpdir()),
-      (tmp) =>
-        Effect.gen(function* () {
-          const project = path.join(tmp.path, "project")
-          yield* Effect.promise(async () => {
-            await fs.mkdir(project)
-            await fs.writeFile(path.join(project, "tracked.txt"), "one\n")
-            await initGit(project)
-          })
-
-          yield* Effect.gen(function* () {
-            const snapshot = yield* Snapshot.Service
-            const before = yield* snapshot.capture()
-            expect(before).toBeDefined()
-            if (!before) return
-            yield* Effect.promise(async () => {
-              await fs.writeFile(path.join(project, "tracked.txt"), "two\n")
-              await fs.writeFile(path.join(project, "unrelated.txt"), "keep\n")
-            })
-            yield* snapshot.checkout(before)
-            expect(yield* read(path.join(project, "tracked.txt"))).toBe("one\n")
-            expect(yield* read(path.join(project, "unrelated.txt"))).toBe("keep\n")
-          }).pipe(Effect.provide(snapshotLayer(tmp.path, project)))
-        }),
-      (tmp) => Effect.promise(() => tmp[Symbol.asyncDispose]()),
-    ),
-  )
 })
 
 function snapshotLayer(data: string, directory: string) {

packages/server/src/auth.ts

@@ -2,10 +2,6 @@ export * as ServerAuth from "./auth"
 
 import { Context, Layer, Option, Redacted } from "effect"
 
-export type Credentials = {
-  password?: string
-}
-
 export type DecodedCredentials = {
   readonly username: string
   readonly password: Redacted.Redacted
@@ -37,16 +33,3 @@ export function authorized(credentials: DecodedCredentials, config: Info) {
     Redacted.value(credentials.password) === config.password.value
   )
 }
-
-export function header(credentials?: Credentials) {
-  const password = credentials?.password
-  if (!password) return undefined
-
-  return `Basic ${Buffer.from(`opencode:${password}`).toString("base64")}`
-}
-
-export function headers(credentials?: Credentials) {
-  const authorization = header(credentials)
-  if (!authorization) return undefined
-  return { Authorization: authorization }
-}

packages/server/test/auth.test.ts

@@ -7,7 +7,3 @@ test("accepts only the fixed opencode username", () => {
   expect(ServerAuth.authorized({ username: "opencode", password: Redacted.make("secret") }, config)).toBe(true)
   expect(ServerAuth.authorized({ username: "custom", password: Redacted.make("secret") }, config)).toBe(false)
 })
-
-test("encodes the fixed opencode username", () => {
-  expect(ServerAuth.header({ password: "secret" })).toBe(`Basic ${Buffer.from("opencode:secret").toString("base64")}`)
-})