fix(core): return content-only Code Mode results

Co-authored-by: Aiden Cline <rekram1-node@users.noreply.github.com>

packages/ai/src/protocols/anthropic-messages.ts

@@ -573,7 +573,10 @@ const lowerMessages = Effect.fn("AnthropicMessages.lowerMessages")(function* (
         cache_control: cacheControl(breakpoints, part.cache),
       })
     }
-    messages.push({ role: "user", content })
+    const previous = messages.at(-1)
+    if (previous?.role === "user" && previous.content.every((block) => block.type === "tool_result"))
+      messages[messages.length - 1] = { role: "user", content: [...previous.content, ...content] }
+    else messages.push({ role: "user", content })
   }
 
   return messages

packages/ai/src/route/executor.ts

@@ -1,4 +1,4 @@
-import { Cause, Context, Effect, Layer, Option, Schema } from "effect"
+import { Cause, Context, Effect, Layer, Option, Schema, Stream } from "effect"
 import {
   FetchHttpClient,
   Headers,
@@ -297,44 +297,86 @@ export const classifyHttpFailure = (input: {
   })
 }
 
-const toHttpError = (redactedNames: ReadonlyArray<string | RegExp>) => (error: unknown) => {
-  const transportError = (input: {
-    readonly message: string
-    readonly kind?: string | undefined
-    readonly request?: HttpClientRequest.HttpClientRequest | undefined
-  }) =>
+type HttpOperation = "request" | "read"
+
+const NativeTransportFailure = Schema.Struct({
+  message: Schema.String,
+  code: Schema.optionalKey(Schema.String),
+  cause: Schema.optionalKey(Schema.Unknown),
+})
+const decodeNativeTransportFailure = Schema.decodeUnknownOption(NativeTransportFailure)
+
+const nativeTransportFailure = (error: unknown) => {
+  const failure = Option.getOrUndefined(decodeNativeTransportFailure(error))
+  if (!failure) return undefined
+  if (failure.code !== undefined) return failure
+  const cause = Option.getOrUndefined(decodeNativeTransportFailure(failure.cause))
+  if (cause?.code !== undefined) return cause
+  return failure
+}
+
+const httpError = (input: {
+  readonly error: unknown
+  readonly request: HttpClientRequest.HttpClientRequest
+  readonly operation: HttpOperation
+  readonly redactedNames: ReadonlyArray<string | RegExp>
+}) => {
+  const request = HttpClientError.isHttpClientError(input.error) ? input.error.request : input.request
+  const transportError = (failure: { readonly message: string; readonly code?: string | undefined }) =>
     new AIError({
       module: "RequestExecutor",
-      method: "execute",
+      method: input.operation,
       reason: new TransportReason({
-        message: input.message,
-        kind: input.kind,
-        url: input.request ? redactUrl(input.request.url) : undefined,
-        http: input.request ? new HttpContext({ request: requestDetails(input.request, redactedNames) }) : undefined,
+        message: failure.message,
+        transport: "http",
+        operation: input.operation,
+        code: failure.code,
+        url: redactUrl(request.url),
+        http: new HttpContext({ request: requestDetails(request, input.redactedNames) }),
       }),
     })
 
-  if (Cause.isTimeoutError(error)) {
-    return transportError({ message: error.message, kind: "Timeout" })
-  }
-  if (!HttpClientError.isHttpClientError(error)) {
-    return transportError({ message: error instanceof Error ? error.message : "HTTP transport failed" })
-  }
-  const request = "request" in error ? error.request : undefined
-  if (error.reason._tag === "TransportError") {
+  const source =
+    HttpClientError.isHttpClientError(input.error) && "cause" in input.error.reason
+      ? input.error.reason.cause
+      : input.error
+  const native = nativeTransportFailure(source)
+  const code = native?.code
+  const raw = native?.message ?? (input.error instanceof Error ? input.error.message : undefined)
+  const detail = raw ? redactBody(raw, secretValues(request)) : undefined
+  const message = code && detail && !detail.includes(code) ? `${code}: ${detail}` : detail
+
+  if (Cause.isTimeoutError(input.error) || Cause.isTimeoutError(source))
+    return transportError({ message: message ?? "HTTP transport timed out", code: code ?? "Timeout" })
+  if (!HttpClientError.isHttpClientError(input.error))
+    return transportError({ message: message ?? "HTTP transport failed", code })
+  if (input.error.reason._tag === "TransportError") {
     return transportError({
-      message: error.reason.description ?? "HTTP transport failed",
-      kind: error.reason._tag,
-      request,
+      message: message ?? input.error.reason.description ?? "HTTP transport failed",
+      code: code ?? input.error.reason._tag,
     })
   }
   return transportError({
-    message: `HTTP transport failed: ${error.reason._tag}`,
-    kind: error.reason._tag,
-    request,
+    message: message ?? `HTTP transport failed: ${input.error.reason._tag}`,
+    code: code ?? input.error.reason._tag,
   })
 }
 
+export const stream = (
+  executor: Interface,
+  request: HttpClientRequest.HttpClientRequest,
+  middleware?: HttpMiddleware,
+): Stream.Stream<Uint8Array, AIError> =>
+  Stream.unwrap(
+    Effect.gen(function* () {
+      const redactedNames = yield* Headers.CurrentRedactedNames
+      const response = yield* executor.execute(request, middleware)
+      return response.stream.pipe(
+        Stream.mapError((error) => httpError({ error, request: response.request, operation: "read", redactedNames })),
+      )
+    }),
+  )
+
 export const layer: Layer.Layer<Service, never, HttpClient.HttpClient> = Layer.effect(
   Service,
   Effect.gen(function* () {
@@ -343,15 +385,16 @@ export const layer: Layer.Layer<Service, never, HttpClient.HttpClient> = Layer.e
       Effect.gen(function* () {
         const redactedNames = yield* Headers.CurrentRedactedNames
         if (!middleware)
-          return yield* http
-            .execute(request)
-            .pipe(Effect.mapError(toHttpError(redactedNames)), Effect.flatMap(statusError(request, redactedNames)))
+          return yield* http.execute(request).pipe(
+            Effect.mapError((error) => httpError({ error, request, operation: "request", redactedNames })),
+            Effect.flatMap(statusError(request, redactedNames)),
+          )
 
         const response = yield* middleware(request, (input) =>
           http
             .execute(input)
             .pipe(Effect.mapError((cause) => (cause instanceof Error ? cause : new Error(String(cause))))),
-        ).pipe(Effect.mapError(toHttpError(redactedNames)))
+        ).pipe(Effect.mapError((error) => httpError({ error, request, operation: "request", redactedNames })))
         return yield* statusError(response.request, redactedNames)(response)
       })
     return Service.of({

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

@@ -1,4 +1,4 @@
-import { Effect, Stream } from "effect"
+import { Effect } from "effect"
 import { Headers, HttpClientRequest } from "effect/unstable/http"
 import { Auth } from "../auth.js"
 import { render as renderEndpoint } from "../endpoint.js"
@@ -6,6 +6,7 @@ import { Framing } from "../framing.js"
 import type { HttpMiddleware, Transport, TransportPrepareInput } from "./index.js"
 import * as ProviderShared from "../../protocols/shared.js"
 import { mergeJsonRecords, type LLMRequest } from "../../schema/index.js"
+import { RequestExecutor } from "../executor.js"
 
 export type JsonRequestInput<Body> = TransportPrepareInput<Body>
 
@@ -86,26 +87,8 @@ export const httpJson = <Body, Frame>(input: HttpJsonInput<Body, Frame>): HttpJs
         middleware: prepareInput.middleware,
       }
     }),
-  frames: (prepared, request, runtime) =>
-    Stream.unwrap(
-      runtime.http
-        .execute(prepared.request, prepared.middleware)
-        .pipe(
-          Effect.map((response) =>
-            prepared.framing.frame(
-              response.stream.pipe(
-                Stream.mapError((error) =>
-                  ProviderShared.eventError(
-                    `${request.model.provider}/${request.model.route.id}`,
-                    `Failed to read ${request.model.provider}/${request.model.route.id} stream`,
-                    ProviderShared.errorText(error),
-                  ),
-                ),
-              ),
-            ),
-          ),
-        ),
-    ),
+  frames: (prepared, _request, runtime) =>
+    prepared.framing.frame(RequestExecutor.stream(runtime.http, prepared.request, prepared.middleware)),
 })
 
 export const sseJson = {

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

@@ -1,6 +1,6 @@
 import { Cause, Context, Effect, Layer, Queue, Stream } from "effect"
 import { Headers } from "effect/unstable/http"
-import { AIError, TransportReason } from "../../schema/index.js"
+import { AIError, TransportReason, type TransportOperation } from "../../schema/index.js"
 import * as HttpTransport from "./http.js"
 import type { Transport } from "./index.js"
 
@@ -29,12 +29,18 @@ export class Service extends Context.Service<Service, Interface>()("@opencode/AI
 const transportError = (
   method: string,
   message: string,
-  input: { readonly url?: string; readonly kind?: string } = {},
+  input: { readonly operation: TransportOperation; readonly url?: string; readonly code?: string },
 ) =>
   new AIError({
     module: "WebSocketExecutor",
     method,
-    reason: new TransportReason({ message, url: input.url, kind: input.kind }),
+    reason: new TransportReason({
+      message,
+      transport: "websocket",
+      operation: input.operation,
+      url: input.url,
+      code: input.code,
+    }),
   })
 
 const eventMessage = (event: Event) => {
@@ -55,7 +61,8 @@ const waitOpen = (ws: globalThis.WebSocket, input: WebSocketRequest) => {
     return Effect.fail(
       transportError("open", `WebSocket closed before opening (state ${ws.readyState})`, {
         url: input.url,
-        kind: "open",
+        operation: "request",
+        code: "closed",
       }),
     )
   }
@@ -79,7 +86,10 @@ const waitOpen = (ws: globalThis.WebSocket, input: WebSocketRequest) => {
       cleanup()
       resume(
         Effect.fail(
-          transportError("open", `Failed to open WebSocket: ${eventMessage(event)}`, { url: input.url, kind: "open" }),
+          transportError("open", `Failed to open WebSocket: ${eventMessage(event)}`, {
+            url: input.url,
+            operation: "request",
+          }),
         ),
       )
     }
@@ -89,7 +99,8 @@ const waitOpen = (ws: globalThis.WebSocket, input: WebSocketRequest) => {
         Effect.fail(
           transportError("open", `WebSocket closed before opening with code ${event.code}`, {
             url: input.url,
-            kind: "open",
+            operation: "request",
+            code: String(event.code),
           }),
         ),
       )
@@ -118,7 +129,8 @@ const webSocketUrl = (value: string) =>
     catch: (error) =>
       transportError("prepare", error instanceof Error ? error.message : "Invalid WebSocket URL", {
         url: value,
-        kind: "websocket",
+        operation: "request",
+        code: "invalid-url",
       }),
   })
 
@@ -129,7 +141,7 @@ export const open = (input: WebSocketRequest) =>
     catch: (error) =>
       transportError("open", error instanceof Error ? error.message : "Failed to construct WebSocket", {
         url: input.url,
-        kind: "open",
+        operation: "request",
       }),
   }).pipe(Effect.flatMap((ws) => fromWebSocket(ws, input)))
 
@@ -150,7 +162,10 @@ export const fromWebSocket = (
       Queue.failCauseUnsafe(
         messages,
         Cause.fail(
-          transportError("message", "Unsupported WebSocket message payload", { url: input.url, kind: "message" }),
+          transportError("message", "Unsupported WebSocket message payload", {
+            url: input.url,
+            operation: "read",
+          }),
         ),
       )
     }
@@ -158,7 +173,10 @@ export const fromWebSocket = (
       Queue.failCauseUnsafe(
         messages,
         Cause.fail(
-          transportError("message", `WebSocket error: ${eventMessage(event)}`, { url: input.url, kind: "message" }),
+          transportError("message", `WebSocket error: ${eventMessage(event)}`, {
+            url: input.url,
+            operation: "read",
+          }),
         ),
       )
     }
@@ -167,7 +185,11 @@ export const fromWebSocket = (
       Queue.failCauseUnsafe(
         messages,
         Cause.fail(
-          transportError("message", `WebSocket closed with code ${event.code}`, { url: input.url, kind: "close" }),
+          transportError("message", `WebSocket closed with code ${event.code}`, {
+            url: input.url,
+            operation: "read",
+            code: String(event.code),
+          }),
         ),
       )
     }
@@ -188,7 +210,7 @@ export const fromWebSocket = (
           catch: (error) =>
             transportError("sendText", error instanceof Error ? error.message : "Failed to send WebSocket message", {
               url: input.url,
-              kind: "write",
+              operation: "write",
             }),
         }),
       messages: Stream.fromQueue(messages),
@@ -243,7 +265,8 @@ export const json = <Body, Message>(input: JsonInput<Body, Message>): JsonTransp
       return Stream.fail(
         transportError("json", "WebSocket JSON transport requires WebSocketExecutor.Service", {
           url: prepared.url,
-          kind: "websocket",
+          operation: "request",
+          code: "unavailable",
         }),
       )
     }

packages/ai/src/schema/errors.ts

@@ -92,10 +92,18 @@ export class ProviderInternalReason extends Schema.Class<ProviderInternalReason>
   http: Schema.optional(HttpContext),
 }) {}
 
+export const TransportType = Schema.Literals(["http", "websocket"])
+export type TransportType = typeof TransportType.Type
+
+export const TransportOperation = Schema.Literals(["request", "read", "write"])
+export type TransportOperation = typeof TransportOperation.Type
+
 export class TransportReason extends Schema.Class<TransportReason>("AI.Error.Transport")({
   _tag: Schema.tag("Transport"),
   message: Schema.String,
-  kind: Schema.optional(Schema.String),
+  transport: TransportType,
+  operation: TransportOperation,
+  code: Schema.optional(Schema.String),
   url: Schema.optional(Schema.String),
   http: Schema.optional(HttpContext),
 }) {}

packages/ai/test/executor.test.ts

@@ -1,10 +1,10 @@
 import { describe, expect } from "bun:test"
-import { Effect, Layer, Ref } from "effect"
-import { Headers, HttpClient, HttpClientRequest, HttpClientResponse } from "effect/unstable/http"
+import { Effect, Layer, Ref, Stream } from "effect"
+import { Headers, HttpClient, HttpClientError, HttpClientRequest, HttpClientResponse } from "effect/unstable/http"
 import { LLM, AIError } from "../src/index.js"
 import { LLMClient, RequestExecutor } from "../src/route.js"
 import * as OpenAIChat from "../src/protocols/openai-chat.js"
-import { dynamicResponse } from "./lib/http.js"
+import { dynamicResponse, systemError } from "./lib/http.js"
 import { deltaChunk } from "./lib/openai-chunks.js"
 import { sseRaw } from "./lib/sse.js"
 import { it } from "./lib/effect.js"
@@ -67,6 +67,62 @@ const expectAIError = (error: unknown) => {
 const errorHttp = (error: AIError) => ("http" in error.reason ? error.reason.http : undefined)
 
 describe("RequestExecutor", () => {
+  it.effect("parses response body failures at the executor seam", () =>
+    Effect.gen(function* () {
+      const executor = yield* RequestExecutor.Service
+      const error = yield* RequestExecutor.stream(executor, secretRequest).pipe(Stream.runDrain, Effect.flip)
+
+      expectAIError(error)
+      expect(error.reason).toMatchObject({
+        _tag: "Transport",
+        message: "ECONNRESET: disconnected <redacted> <redacted>",
+        transport: "http",
+        operation: "read",
+        code: "ECONNRESET",
+        url: "https://provider.test/v1/chat?api_key=%3Credacted%3E&debug=1",
+      })
+    }).pipe(
+      Effect.provide(
+        responsesLayer([
+          new Response(
+            new ReadableStream({
+              start(controller) {
+                controller.error(systemError("ECONNRESET", "disconnected query-secret-123 header-secret-456"))
+              },
+            }),
+          ),
+        ]),
+      ),
+    ),
+  )
+
+  it.effect("unwraps native transport failure causes", () =>
+    Effect.gen(function* () {
+      const executor = yield* RequestExecutor.Service
+      const error = yield* RequestExecutor.stream(executor, secretRequest).pipe(Stream.runDrain, Effect.flip)
+
+      expectAIError(error)
+      expect(error.reason).toMatchObject({
+        _tag: "Transport",
+        message: "ECONNRESET: socket closed",
+        operation: "read",
+        code: "ECONNRESET",
+      })
+    }).pipe(
+      Effect.provide(
+        responsesLayer([
+          new Response(
+            new ReadableStream({
+              pull(controller) {
+                controller.error(new TypeError("fetch failed", { cause: systemError("ECONNRESET", "socket closed") }))
+              },
+            }),
+          ),
+        ]),
+      ),
+    ),
+  )
+
   it.effect("preserves middleware error messages", () =>
     Effect.gen(function* () {
       const executor = yield* RequestExecutor.Service
@@ -79,6 +135,48 @@ describe("RequestExecutor", () => {
     }).pipe(Effect.provide(responsesLayer([]))),
   )
 
+  it.effect("reports the request sent by middleware", () =>
+    Effect.gen(function* () {
+      const executor = yield* RequestExecutor.Service
+      const error = yield* executor
+        .execute(request, (original, handler) =>
+          handler(
+            original.pipe(
+              HttpClientRequest.setUrl("https://proxy.test/v1/chat?api_key=proxy-secret"),
+              HttpClientRequest.setHeader("authorization", "Bearer proxy-secret"),
+            ),
+          ),
+        )
+        .pipe(Effect.flip)
+
+      expectAIError(error)
+      expect(error.reason).toMatchObject({
+        _tag: "Transport",
+        message: "ECONNRESET: proxy disconnected <redacted>",
+        url: "https://proxy.test/v1/chat?api_key=%3Credacted%3E",
+        http: {
+          request: {
+            url: "https://proxy.test/v1/chat?api_key=%3Credacted%3E",
+            headers: { authorization: "<redacted>" },
+          },
+        },
+      })
+    }).pipe(
+      Effect.provide(
+        dynamicResponse((input) =>
+          Effect.fail(
+            new HttpClientError.HttpClientError({
+              reason: new HttpClientError.TransportError({
+                request: input.request,
+                cause: systemError("ECONNRESET", "proxy disconnected proxy-secret"),
+              }),
+            }),
+          ),
+        ),
+      ),
+    ),
+  )
+
   it.effect("classifies context overflow responses", () =>
     Effect.gen(function* () {
       const executor = yield* RequestExecutor.Service

packages/ai/test/lib/http.ts

@@ -1,5 +1,5 @@
 import { Effect, Layer, Ref } from "effect"
-import { HttpClient, HttpClientRequest, HttpClientResponse } from "effect/unstable/http"
+import { HttpClient, HttpClientError, HttpClientRequest, HttpClientResponse } from "effect/unstable/http"
 import { LLMClient, RequestExecutor, WebSocketExecutor } from "../../src/route.js"
 import type { Service as LLMClientService } from "../../src/route/client.js"
 import type { Service as RequestExecutorService } from "../../src/route/executor.js"
@@ -14,7 +14,9 @@ export type HandlerInput = {
   ) => HttpClientResponse.HttpClientResponse
 }
 
-export type Handler = (input: HandlerInput) => Effect.Effect<HttpClientResponse.HttpClientResponse>
+export type Handler = (
+  input: HandlerInput,
+) => Effect.Effect<HttpClientResponse.HttpClientResponse, HttpClientError.HttpClientError>
 
 const handlerLayer = (handler: Handler): Layer.Layer<HttpClient.HttpClient> =>
   Layer.succeed(
@@ -34,6 +36,12 @@ const handlerLayer = (handler: Handler): Layer.Layer<HttpClient.HttpClient> =>
 
 export type RuntimeEnv = RequestExecutorService | WebSocketExecutorService | LLMClientService
 
+export interface SystemError extends Error {
+  readonly code: string
+}
+
+export const systemError = (code: string, message: string): SystemError => Object.assign(new Error(message), { code })
+
 export const runtimeLayer = (layer: Layer.Layer<HttpClient.HttpClient>): Layer.Layer<RuntimeEnv> => {
   const requestExecutorLayer = RequestExecutor.layer.pipe(Layer.provide(layer))
   const deps = Layer.mergeAll(requestExecutorLayer, WebSocketExecutor.layer)
@@ -63,14 +71,20 @@ export const dynamicResponse = (handler: Handler) => runtimeLayer(handlerLayer(h
  * Layer that emits the supplied SSE chunks and then aborts mid-stream. Used to
  * exercise transport errors that surface during parsing.
  */
-export const truncatedStream = (chunks: ReadonlyArray<string>) =>
+export const truncatedStream = (chunks: ReadonlyArray<string>, error: Error = new Error("connection reset")) =>
   dynamicResponse((input) =>
     Effect.sync(() => {
       const encoder = new TextEncoder()
+      let index = 0
       const stream = new ReadableStream({
-        start(controller) {
-          for (const chunk of chunks) controller.enqueue(encoder.encode(chunk))
-          controller.error(new Error("connection reset"))
+        pull(controller) {
+          const chunk = chunks[index]
+          if (chunk !== undefined) {
+            index++
+            controller.enqueue(encoder.encode(chunk))
+            return
+          }
+          controller.error(error)
         },
       })
       return input.respond(stream, { headers: SSE_HEADERS })

packages/ai/test/provider/anthropic-messages.test.ts

@@ -271,6 +271,47 @@ describe("Anthropic Messages route", () => {
     }),
   )
 
+  it.effect("batches parallel tool results into one Anthropic user message", () =>
+    Effect.gen(function* () {
+      const prepared = yield* compileRequest(
+        LLM.request({
+          model,
+          messages: [
+            Message.user("Check both cities."),
+            Message.assistant([
+              { type: "text", text: "I'll check both." },
+              ToolCallPart.make({ id: "call_paris", name: "weather", input: { city: "Paris" } }),
+              ToolCallPart.make({ id: "call_london", name: "weather", input: { city: "London" } }),
+            ]),
+            Message.tool({ id: "call_paris", name: "weather", result: { temperature: 22 } }),
+            Message.tool({ id: "call_london", name: "weather", result: { temperature: 18 } }),
+          ],
+          cache: "none",
+        }),
+      )
+
+      expect(prepared.body.messages).toMatchObject([
+        { role: "user", content: [{ type: "text", text: "Check both cities." }] },
+        {
+          role: "assistant",
+          content: [
+            { type: "text", text: "I'll check both." },
+            { type: "tool_use", id: "call_paris", name: "weather", input: { city: "Paris" } },
+            { type: "tool_use", id: "call_london", name: "weather", input: { city: "London" } },
+          ],
+        },
+        {
+          role: "user",
+          content: [
+            { type: "tool_result", tool_use_id: "call_paris", content: '{"temperature":22}' },
+            { type: "tool_result", tool_use_id: "call_london", content: '{"temperature":18}' },
+          ],
+        },
+      ])
+      expect(prepared.body.messages).toHaveLength(3)
+    }),
+  )
+
   it.effect("keeps tools and sends tool_choice none", () =>
     Effect.gen(function* () {
       const prepared = yield* compileRequest(
@@ -915,6 +956,54 @@ describe("Anthropic Messages route", () => {
     }),
   )
 
+  it.effect("assembles and persists multiple tool calls from one Anthropic response", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              { type: "message_start", message: { usage: { input_tokens: 5 } } },
+              {
+                type: "content_block_start",
+                index: 0,
+                content_block: { type: "tool_use", id: "call_paris", name: "weather", input: {} },
+              },
+              {
+                type: "content_block_delta",
+                index: 0,
+                delta: { type: "input_json_delta", partial_json: '{"city":"Paris"}' },
+              },
+              { type: "content_block_stop", index: 0 },
+              {
+                type: "content_block_start",
+                index: 1,
+                content_block: { type: "tool_use", id: "call_london", name: "weather", input: {} },
+              },
+              {
+                type: "content_block_delta",
+                index: 1,
+                delta: { type: "input_json_delta", partial_json: '{"city":"London"}' },
+              },
+              { type: "content_block_stop", index: 1 },
+              { type: "message_delta", delta: { stop_reason: "tool_use" }, usage: { output_tokens: 2 } },
+              { type: "message_stop" },
+            ),
+          ),
+        ),
+      )
+
+      expect(response.toolCalls).toMatchObject([
+        { id: "call_paris", name: "weather", input: { city: "Paris" } },
+        { id: "call_london", name: "weather", input: { city: "London" } },
+      ])
+      expect(response.message.content).toMatchObject([
+        { type: "tool-call", id: "call_paris", name: "weather", input: { city: "Paris" } },
+        { type: "tool-call", id: "call_london", name: "weather", input: { city: "London" } },
+      ])
+      expect(response.finishReason).toEqual({ normalized: "tool-calls", raw: "tool_use" })
+    }),
+  )
+
   it.effect("keeps malformed server tool input terminal", () =>
     Effect.gen(function* () {
       const body = sseEvents(

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

@@ -1,5 +1,5 @@
 import { describe, expect } from "bun:test"
-import { Effect, Schema, Stream } from "effect"
+import { Effect, Ref, Schema, Stream } from "effect"
 import { HttpClientRequest } from "effect/unstable/http"
 import {
   HttpOptions,
@@ -22,7 +22,7 @@ import { ProviderShared } from "../../src/protocols/shared.js"
 import { Auth, LLMClient } from "../../src/route.js"
 import { compileRequest } from "../../src/route/client.js"
 import { it } from "../lib/effect.js"
-import { dynamicResponse, fixedResponse, truncatedStream } from "../lib/http.js"
+import { dynamicResponse, fixedResponse, systemError, truncatedStream } from "../lib/http.js"
 import { deltaChunk, usageChunk } from "../lib/openai-chunks.js"
 import { sseEvents } from "../lib/sse.js"
 
@@ -1221,12 +1221,44 @@ describe("OpenAI Chat route", () => {
 
   it.effect("surfaces transport errors that occur mid-stream", () =>
     Effect.gen(function* () {
-      const layer = truncatedStream([
-        `data: ${JSON.stringify(deltaChunk({ role: "assistant", content: "Hello" }))}\n\n`,
-      ])
-      const error = yield* LLMClient.generate(request).pipe(Effect.provide(layer), Effect.flip)
+      const layer = truncatedStream(
+        [`data: ${JSON.stringify(deltaChunk({ role: "assistant", content: "Hello" }))}\n\n`],
+        systemError("ECONNRESET", "socket closed unexpectedly"),
+      )
+      const events = yield* Ref.make<ReadonlyArray<LLMEvent>>([])
+      const error = yield* LLMClient.stream(request).pipe(
+        Stream.tap((event) => Ref.update(events, (current) => [...current, event])),
+        Stream.runDrain,
+        Effect.provide(layer),
+        Effect.flip,
+      )
 
-      expect(error.message).toContain("Failed to read openai/openai-chat stream")
+      expect((yield* Ref.get(events)).some((event) => event.type === "text-delta")).toBeTrue()
+      expect(error.reason).toMatchObject({
+        _tag: "Transport",
+        message: "ECONNRESET: socket closed unexpectedly",
+        transport: "http",
+        operation: "read",
+        code: "ECONNRESET",
+        url: "https://api.openai.test/v1/chat/completions",
+      })
+    }),
+  )
+
+  it.effect("surfaces transport errors before the first stream frame", () =>
+    Effect.gen(function* () {
+      const error = yield* LLMClient.generate(request).pipe(
+        Effect.provide(truncatedStream([], systemError("ECONNRESET", "socket closed before output"))),
+        Effect.flip,
+      )
+
+      expect(error.reason).toMatchObject({
+        _tag: "Transport",
+        message: "ECONNRESET: socket closed before output",
+        transport: "http",
+        operation: "read",
+        code: "ECONNRESET",
+      })
     }),
   )
 

packages/core/src/aisdk.ts

@@ -763,7 +763,9 @@ function apiCallErrorReason(error: APICallError) {
   if (error.statusCode !== undefined || !error.isRetryable) return reason
   return new TransportReason({
     message: reason.message,
-    kind: error.name,
+    transport: "http",
+    operation: "request",
+    code: error.name,
     url: error.url,
     http: "http" in reason ? reason.http : undefined,
   })

packages/core/src/codemode/tool.ts

@@ -75,7 +75,9 @@ export const create = (
               const outputFileParts = outputFiles(content)
               if (outputFileParts.length > 0)
                 yield* Ref.update(files, (items) => [...items, { index, files: outputFileParts }])
-              return executed.output
+              if (executed.output !== undefined) return executed.output
+              const text = content.flatMap((part) => (part.type === "text" ? [part.text] : [])).join("\n")
+              return text === "" ? null : text
             }),
           {
             onToolCallStart: ({ index, name, input }) => {
@@ -155,7 +157,7 @@ function runtime(
     tools[path] = Tool.make({
       description: child.description,
       input: child.inputSchema,
-      output: child.outputSchema,
+      output: child.outputSchema ?? Schema.NullOr(Schema.String),
       execute: (input) => executeTool(name, registration, input),
     })
   }

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

@@ -48,10 +48,12 @@ export const schedule = (
   assistantMessageID: () => SessionMessage.ID,
 ) =>
   Schedule.max([Schedule.exponential("2 seconds"), Schedule.recurs(4)]).pipe(
+    Schedule.jittered,
     Schedule.setInputType<RetryableFailure>(),
     Schedule.modifyDelay(({ input: failure, duration: delay }) => {
       const minimum = retryAfter(failure)
-      return Effect.succeed(minimum === undefined ? delay : Duration.max(delay, Duration.millis(minimum)))
+      const duration = minimum === undefined ? delay : Duration.max(delay, Duration.millis(minimum))
+      return Effect.succeed(Duration.millis(Math.ceil(Duration.toMillis(duration))))
     }),
     Schedule.tap((metadata) =>
       bus.publish(SessionEvent.RetryScheduled, {

packages/core/src/session/runner/to-llm-message.ts

@@ -1,5 +1,6 @@
 import { Message, ToolCallPart, ToolResultPart, type ContentPart, type ProviderMetadata } from "@opencode-ai/ai"
 import { Option, Schema } from "effect"
+import { fileURLToPath } from "url"
 import type { Model } from "../../model.js"
 import { SessionMessage } from "../message.js"
 import type { FileAttachment } from "@opencode-ai/schema/prompt"
@@ -14,6 +15,17 @@ const media = (file: FileAttachment): ContentPart => ({
   metadata: file.description === undefined ? undefined : { description: file.description },
 })
 
+const attachmentLocation = (file: FileAttachment) => {
+  if (file.source.type !== "uri") return undefined
+  const url = URL.parse(file.source.uri)
+  if (url?.protocol !== "file:") return undefined
+  try {
+    return fileURLToPath(url)
+  } catch {
+    return undefined
+  }
+}
+
 const textAttachment = (file: FileAttachment): ContentPart => ({
   type: "text",
   text: `\n\n${[
@@ -36,7 +48,7 @@ const textAttachment = (file: FileAttachment): ContentPart => ({
 const directoryAttachment = (file: FileAttachment): ContentPart => ({
   type: "text",
   text: `\n\n${[
-    `Attached directory: ${file.name ?? (file.source.type === "uri" ? file.source.uri : "directory")}`,
+    `Attached directory: ${attachmentLocation(file) ?? file.name ?? (file.source.type === "uri" ? file.source.uri : "directory")}`,
     file.description === undefined ? undefined : `Description: ${file.description}`,
     file.data.length === 0 ? undefined : "",
     file.data.length === 0 ? undefined : Buffer.from(file.data, "base64").toString("utf8"),
@@ -55,7 +67,10 @@ const directoryAttachment = (file: FileAttachment): ContentPart => ({
 const attachmentContent = (file: FileAttachment): ContentPart[] => {
   if (file.mime === "text/plain") return [textAttachment(file)]
   if (file.mime === "application/x-directory") return [directoryAttachment(file)]
-  if (imageMimes.has(file.mime)) return [media(file)]
+  if (imageMimes.has(file.mime)) {
+    const location = attachmentLocation(file)
+    return [...(location === undefined ? [] : [Message.text(`Attached file: ${location}`)]), media(file)]
+  }
   return []
 }
 

packages/core/test/aisdk.test.ts

@@ -49,7 +49,9 @@ const client = LLMClient.layer.pipe(
   Layer.provide(
     Layer.succeed(
       RequestExecutor.Service,
-      RequestExecutor.Service.of({ execute: () => Effect.die("Unexpected HTTP request") }),
+      RequestExecutor.Service.of({
+        execute: () => Effect.die("Unexpected HTTP request"),
+      }),
     ),
   ),
 )
@@ -542,7 +544,12 @@ it.effect("retries status-less AI SDK transport failures", () =>
         isRetryable: true,
       }),
     )
-    expect(error.reason).toMatchObject({ _tag: "Transport", kind: "AI_APICallError" })
+    expect(error.reason).toMatchObject({
+      _tag: "Transport",
+      transport: "http",
+      operation: "request",
+      code: "AI_APICallError",
+    })
     expect(SessionRunnerRetry.isRetryable(error)).toBeTrue()
     expect("http" in error.reason ? error.reason.http?.request.url : undefined).toBe("https://api.example.com/chat")
   }),

packages/core/test/mcp.test.ts

@@ -248,6 +248,12 @@ const mcp = Layer.mock(MCP.Service, {
           required: ["ok"],
         },
       }),
+      new MCP.Tool({
+        server: MCP.ServerName.make("demo"),
+        name: "status",
+        description: "Status",
+        inputSchema: { type: "object", properties: {} },
+      }),
       new MCP.Tool({
         server: MCP.ServerName.make("direct"),
         name: "lookup",
@@ -290,6 +296,13 @@ const mcp = Layer.mock(MCP.Service, {
             { type: "media", data: "aGVsbG8=", mimeType: "image/png" },
           ],
         })
+      if (input.name === "status")
+        return new MCP.ToolResult({
+          server: MCP.ServerName.make(input.server),
+          tool: input.name,
+          isError: false,
+          content: [{ type: "text", text: "hello" }],
+        })
       return new MCP.ToolResult({
         server: MCP.ServerName.make(input.server),
         tool: input.name,
@@ -984,6 +997,31 @@ it.effect("advertises MCP output schemas to Code Mode", () =>
   }),
 )
 
+it.effect("returns content-only MCP results through Code Mode", () =>
+  Effect.gen(function* () {
+    assertion = yield* Deferred.make<Permission.AssertInput>()
+    decision = Effect.void
+    const registry = yield* Tool.Service
+    const toolSet = yield* waitForCodeModeTool(registry, "demo.status")
+
+    const execution = yield* toolSet.execute({
+      sessionID: Session.ID.make("ses_mcp_content_only"),
+      ...toolIdentity,
+      call: {
+        type: "tool-call",
+        id: "call_mcp_content_only",
+        name: "execute",
+        input: { code: "return await tools.demo.status({})" },
+      },
+    })
+
+    expect(execution).toMatchObject({
+      output: { output: "hello", toolCalls: [{ tool: "demo.status", status: "completed" }] },
+      content: [{ type: "text", text: "hello" }],
+    })
+  }),
+)
+
 it.effect("advertises MCP tools directly when Code Mode is disabled for the server", () =>
   Effect.gen(function* () {
     const registry = yield* Tool.Service

packages/core/test/plugin/promise.test.ts

@@ -393,4 +393,45 @@ describe("fromPromise", () => {
       expect(progress).toEqual([{ phase: "greeting" }])
     }),
   )
+
+  it.effect("returns content-only plugin results through Code Mode", () =>
+    Effect.gen(function* () {
+      const plugins = yield* Plugin.Service
+      const registry = yield* Tool.Service
+      const host = yield* PluginHost.make(plugins)
+      const promisePlugin = define({
+        id: "content-only-tool",
+        setup: async (ctx) => {
+          await ctx.tool.transform((tools) => {
+            tools.add({
+              name: "demo_status",
+              description: "Returns a status string",
+              input: Schema.Struct({}),
+              execute: async () => ({ content: [{ type: "text", text: "hello" }] }),
+              options: { codemode: true },
+            })
+          })
+        },
+      })
+
+      yield* PluginPromise.fromPromise(promisePlugin).effect(host)
+
+      const toolSet = yield* registry.snapshot()
+      const throughCodeMode = yield* toolSet.execute({
+        sessionID: Session.ID.make("ses_content_only_tool"),
+        agent: Agent.ID.make("build"),
+        messageID: SessionMessage.ID.make("msg_content_only_tool"),
+        call: {
+          type: "tool-call",
+          id: "call_content_only_tool",
+          name: "execute",
+          input: { code: "return await tools.demo_status({})" },
+        },
+      })
+      expect(throughCodeMode).toMatchObject({
+        output: { output: "hello", toolCalls: [{ tool: "demo_status", status: "completed" }] },
+        content: [{ type: "text", text: "hello" }],
+      })
+    }),
+  )
 })

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

@@ -39,7 +39,9 @@ describe("toSessionError", () => {
     )
     expect(toSessionError(llm(new QuotaExceededReason({ message: "quota" }))).type).toBe("provider.quota")
     expect(toSessionError(llm(new ContentPolicyReason({ message: "blocked" }))).type).toBe("provider.content-filter")
-    expect(toSessionError(llm(new TransportReason({ message: "transport" }))).type).toBe("provider.transport")
+    expect(
+      toSessionError(llm(new TransportReason({ message: "transport", transport: "http", operation: "request" }))).type,
+    ).toBe("provider.transport")
     expect(toSessionError(llm(new ProviderInternalReason({ message: "internal", status: 500 }))).type).toBe(
       "provider.internal",
     )
@@ -111,7 +113,7 @@ describe("toSessionError", () => {
     const eligible = [
       llm(new RateLimitReason({ message: "rate" })),
       llm(new ProviderInternalReason({ message: "internal", status: 500 })),
-      llm(new TransportReason({ message: "transport" })),
+      llm(new TransportReason({ message: "transport", transport: "http", operation: "request" })),
     ]
     const ineligible = [
       llm(new AuthenticationReason({ message: "auth", kind: "invalid" })),

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

@@ -32,7 +32,7 @@ describe("SessionExecution lifecycle", () => {
           new AIError({
             module: "test",
             method: "stream",
-            reason: new TransportReason({ message: "Disconnected" }),
+            reason: new TransportReason({ message: "Disconnected", transport: "http", operation: "request" }),
           }),
         ),
       ),

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

@@ -11,6 +11,8 @@ import { Shell } from "@opencode-ai/schema/shell"
 import { Location } from "@opencode-ai/schema/location"
 import { AbsolutePath } from "@opencode-ai/schema/schema"
 import { DateTime } from "effect"
+import path from "path"
+import { pathToFileURL } from "url"
 
 const created = DateTime.makeUnsafe(0)
 const id = (value: string) => SessionMessage.ID.make(`msg_${value}`)
@@ -267,12 +269,13 @@ Recent work
     ])
   })
 
-  test("lowers directory attachments as directory context", () => {
+  test("exposes admitted reference directory source paths in model context", () => {
+    const location = path.resolve("/references/harness-engineering")
     const directory = FileAttachment.make({
       data: Base64.make(Buffer.from("lib/\nindex.ts").toString("base64")),
       mime: "application/x-directory",
-      source: { type: "uri", uri: "file:///project/src" },
-      name: "src/",
+      source: { type: "uri", uri: pathToFileURL(location).href },
+      name: "harness-engineering",
     })
     const messages = toLLMMessages(
       [
@@ -295,14 +298,15 @@ Recent work
         { type: "text", text: "Review this directory" },
         {
           type: "text",
-          text: "\n\nAttached directory: src/\n\nlib/\nindex.ts",
-          metadata: { attachment: { source: directory.source, name: "src/" } },
+          text: `\n\nAttached directory: ${location}\n\nlib/\nindex.ts`,
+          metadata: { attachment: { source: directory.source, name: "harness-engineering" } },
         },
       ],
     })
   })
 
   test("preserves attachment order after the prompt", () => {
+    const directory = path.resolve("/project/src")
     const messages = toLLMMessages(
       [
         SessionMessage.User.make({
@@ -313,7 +317,7 @@ Recent work
             FileAttachment.make({
               data: Base64.make(Buffer.from("index.ts").toString("base64")),
               mime: "application/x-directory",
-              source: { type: "uri", uri: "file:///project/src" },
+              source: { type: "uri", uri: pathToFileURL(directory).href },
               name: "src/",
             }),
             FileAttachment.make({
@@ -332,12 +336,13 @@ Recent work
     expect(messages).toHaveLength(1)
     expect(messages[0]?.content.map((part) => (part.type === "text" ? part.text : part.type))).toEqual([
       "Review these attachments",
-      "\n\nAttached directory: src/\n\nindex.ts",
+      `\n\nAttached directory: ${directory}\n\nindex.ts`,
       "\n\nAttached file: main.ts\n\nexport const value = 1",
     ])
   })
 
   test("omits empty prompt text before an attachment", () => {
+    const directory = path.resolve("/project/src")
     const messages = toLLMMessages(
       [
         SessionMessage.User.make({
@@ -348,7 +353,7 @@ Recent work
             FileAttachment.make({
               data: Base64.make(Buffer.from("index.ts").toString("base64")),
               mime: "application/x-directory",
-              source: { type: "uri", uri: "file:///project/src" },
+              source: { type: "uri", uri: pathToFileURL(directory).href },
               name: "src/",
             }),
           ],
@@ -359,7 +364,9 @@ Recent work
     )
 
     expect(messages).toHaveLength(1)
-    expect(messages[0]?.content).toMatchObject([{ type: "text", text: "\n\nAttached directory: src/\n\nindex.ts" }])
+    expect(messages[0]?.content).toMatchObject([
+      { type: "text", text: `\n\nAttached directory: ${directory}\n\nindex.ts` },
+    ])
   })
 
   test("uses materialized image data as provider media and drops unsupported attachments", () => {
@@ -391,6 +398,108 @@ Recent work
     ])
   })
 
+  test("exposes admitted local image source paths before provider media", () => {
+    const data = Base64.make("AAECAw==")
+    const location = path.resolve("/project/IMG_3480.JPG")
+    const image = FileAttachment.make({
+      data,
+      mime: "image/png",
+      source: { type: "uri", uri: pathToFileURL(location).href },
+      name: "IMG_3480.JPG",
+    })
+
+    const messages = toLLMMessages(
+      [
+        SessionMessage.User.make({
+          id: id("user-local-image-path"),
+          type: "user",
+          text: "Inspect this image",
+          files: [image],
+          time: { created },
+        }),
+      ],
+      model,
+    )
+
+    expect(messages[0]?.content).toEqual([
+      { type: "text", text: "Inspect this image" },
+      { type: "text", text: `Attached file: ${location}` },
+      { type: "media", mediaType: "image/png", data, filename: "IMG_3480.JPG" },
+    ])
+  })
+
+  test("falls back to attachment names for invalid local source paths", () => {
+    const data = Base64.make("AAECAw==")
+    const messages = toLLMMessages(
+      [
+        SessionMessage.User.make({
+          id: id("user-invalid-local-paths"),
+          type: "user",
+          text: "Inspect these attachments",
+          files: [
+            FileAttachment.make({
+              data: Base64.make(Buffer.from("index.ts").toString("base64")),
+              mime: "application/x-directory",
+              source: { type: "uri", uri: "file:///project/src%2Flib" },
+              name: "src/",
+            }),
+            FileAttachment.make({
+              data,
+              mime: "image/png",
+              source: { type: "uri", uri: "file:///project/image%2Fpreview.png" },
+              name: "preview.png",
+            }),
+          ],
+          time: { created },
+        }),
+      ],
+      model,
+    )
+
+    expect(messages[0]?.content).toEqual([
+      { type: "text", text: "Inspect these attachments" },
+      {
+        type: "text",
+        text: "\n\nAttached directory: src/\n\nindex.ts",
+        metadata: {
+          attachment: {
+            source: { type: "uri", uri: "file:///project/src%2Flib" },
+            name: "src/",
+          },
+        },
+      },
+      { type: "media", mediaType: "image/png", data, filename: "preview.png" },
+    ])
+  })
+
+  test("does not add attachment location text for non-local provider media", () => {
+    const data = Base64.make("AAECAw==")
+    const messages = toLLMMessages(
+      [
+        SessionMessage.User.make({
+          id: id("user-remote-image"),
+          type: "user",
+          text: "Inspect this image",
+          files: [
+            FileAttachment.make({
+              data,
+              mime: "image/png",
+              source: { type: "uri", uri: "https://example.com/image.png" },
+              name: "image.png",
+            }),
+          ],
+          time: { created },
+        }),
+      ],
+      model,
+    )
+
+    expect(messages[0]?.content).toEqual([
+      { type: "text", text: "Inspect this image" },
+      { type: "media", mediaType: "image/png", data, filename: "image.png" },
+    ])
+  })
+
   test("deduplicates provider media while preserving durable attachment references", () => {
     const data = Base64.make("AAECAw==")
     const messages = toLLMMessages(
@@ -468,7 +577,7 @@ Recent work
             FileAttachment.make({
               data,
               mime: "image/png",
-              source: { type: "uri", uri: "file:///project/image.png" },
+              source: { type: "uri", uri: pathToFileURL(path.resolve("/project/image.png")).href },
               name: "image.png",
               mention: { start: 0, end: 9, text: "[Image 1]" },
             }),

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

@@ -515,7 +515,11 @@ const providerUnavailable = () =>
   new AIError({
     module: "test",
     method: "stream",
-    reason: new TransportReason({ message: "Provider unavailable" }),
+    reason: new TransportReason({
+      message: "Provider unavailable",
+      transport: "http",
+      operation: "request",
+    }),
   })
 
 const incompleteStream = () =>
@@ -3947,7 +3951,7 @@ describe("SessionRunnerLLM", () => {
     }),
   )
 
-  it.effect("retries eligible pre-output failures after exponential backoff", () =>
+  it.effect("bounds jittered exponential backoff for eligible pre-output failures", () =>
     Effect.gen(function* () {
       const session = yield* setup
       yield* admit(session, "Retry transport")
@@ -3956,9 +3960,9 @@ describe("SessionRunnerLLM", () => {
 
       const run = yield* session.resume(sessionID).pipe(Effect.forkChild)
       yield* TestLLM.wait(1)
-      yield* TestClock.adjust("1999 millis")
+      yield* TestClock.adjust("1599 millis")
       expect(requests).toHaveLength(1)
-      yield* TestClock.adjust("1 millis")
+      yield* TestClock.adjust("801 millis")
       yield* Fiber.join(run)
 
       expect(requests).toHaveLength(2)
@@ -3983,7 +3987,7 @@ describe("SessionRunnerLLM", () => {
 
       const run = yield* session.resume(sessionID).pipe(Effect.forkChild)
       yield* TestLLM.wait(1)
-      yield* TestClock.adjust("2 seconds")
+      yield* TestClock.adjust("2400 millis")
       yield* Fiber.join(run)
 
       expect(requests).toHaveLength(2)
@@ -4028,7 +4032,7 @@ describe("SessionRunnerLLM", () => {
 
       const run = yield* session.resume(sessionID).pipe(Effect.forkChild)
       yield* TestLLM.wait(1)
-      yield* TestClock.adjust("2 seconds")
+      yield* TestClock.adjust("2400 millis")
       yield* Fiber.join(run)
 
       expect(requests).toHaveLength(2)
@@ -4085,7 +4089,7 @@ describe("SessionRunnerLLM", () => {
 
       const run = yield* session.resume(sessionID).pipe(Effect.forkChild)
       yield* TestLLM.wait(1)
-      yield* TestClock.adjust("2 seconds")
+      yield* TestClock.adjust("2400 millis")
       yield* Fiber.join(run)
 
       expect(requests[1]?.messages.at(-2)).toMatchObject({
@@ -4126,7 +4130,7 @@ describe("SessionRunnerLLM", () => {
       const run = yield* session.resume(sessionID).pipe(Effect.forkChild)
       yield* TestLLM.wait(1)
       while (!(yield* recordedEventTypes(sessionID)).includes("session.retry.scheduled.1")) yield* Effect.yieldNow
-      yield* TestClock.adjust("2 seconds")
+      yield* TestClock.adjust("2400 millis")
       yield* Fiber.join(run)
 
       expect(executions).toEqual(["settled"])
@@ -4165,7 +4169,7 @@ describe("SessionRunnerLLM", () => {
       const run = yield* session.resume(sessionID).pipe(Effect.forkChild)
       yield* TestLLM.wait(1)
       while (!(yield* recordedEventTypes(sessionID)).includes("session.retry.scheduled.1")) yield* Effect.yieldNow
-      yield* TestClock.adjust("2 seconds")
+      yield* TestClock.adjust("2400 millis")
       yield* Fiber.join(run)
 
       expect(messageRoles(requests[1])).toEqual(["user", "assistant", "tool", "user"])
@@ -4203,7 +4207,7 @@ describe("SessionRunnerLLM", () => {
 
       const run = yield* session.resume(sessionID).pipe(Effect.forkChild)
       yield* TestLLM.wait(1)
-      for (const [index, delay] of [2_000, 4_000, 8_000, 16_000].entries()) {
+      for (const [index, delay] of [2_400, 4_800, 9_600, 19_200].entries()) {
         yield* TestClock.adjust(delay)
         yield* TestLLM.wait(index + 2)
       }
@@ -4224,7 +4228,7 @@ describe("SessionRunnerLLM", () => {
 
       const run = yield* session.resume(sessionID).pipe(Effect.forkChild)
       yield* TestLLM.wait(1)
-      for (const [index, delay] of [2_000, 4_000, 8_000, 16_000].entries()) {
+      for (const [index, delay] of [2_400, 4_800, 9_600, 19_200].entries()) {
         yield* TestClock.adjust(delay)
         yield* TestLLM.wait(index + 2)
       }
@@ -4239,12 +4243,15 @@ describe("SessionRunnerLLM", () => {
         .orderBy(asc(EventTable.seq))
         .all()
         .pipe(Effect.orDie)
-      expect(retries.map((event) => event.data)).toMatchObject([
-        { attempt: 2, at: 2_000 },
-        { attempt: 3, at: 6_000 },
-        { attempt: 4, at: 14_000 },
-        { attempt: 5, at: 30_000 },
-      ])
+      for (const [index, range] of [
+        [1_600, 2_400],
+        [4_800, 7_200],
+        [11_200, 16_800],
+        [24_000, 36_000],
+      ].entries()) {
+        expect(retries[index]?.data.at).toBeGreaterThanOrEqual(range[0]!)
+        expect(retries[index]?.data.at).toBeLessThanOrEqual(range[1]!)
+      }
       expect((yield* recordedEventTypes(sessionID)).filter((type) => type === "session.step.started.1")).toHaveLength(5)
       const assistant = requireAssistant(yield* session.context(sessionID))
       expect(yield* recordedStepSettlementEvents(sessionID, assistant.id)).toMatchObject([
@@ -4274,7 +4281,7 @@ describe("SessionRunnerLLM", () => {
 
       const run = yield* session.resume(sessionID).pipe(Effect.forkChild)
       yield* TestLLM.wait(1)
-      yield* TestClock.adjust("2 seconds")
+      yield* TestClock.adjust("2400 millis")
       yield* Fiber.join(run)
 
       expect(requests).toHaveLength(3)

packages/server/src/fetch.ts

@@ -7,15 +7,6 @@ import { isAllowedCorsOrigin } from "./cors"
 import { createRoutes } from "./routes"
 import type { ServerOptions } from "./options"
 
-export interface BootOptions {
-  /**
-   * Resumes execution-journaled Sessions once the application layer boots. Pair with
-   * `SessionExecution.configured({ suspendOnStart: true })` on runtimes that can die without
-   * teardown, so turns orphaned by a hard death replay on the next boot.
-   */
-  readonly resumeSuspendedSessions?: boolean
-}
-
 /**
  * Builds a web-standard fetch handler — `(request: Request) => Promise<Response>` — serving the
  * same HttpApi routes as the Node server process without binding a port, owning a listener, or
@@ -32,13 +23,17 @@ export interface BootOptions {
  * Auth follows `createRoutes` semantics: `options.password` enforces Basic auth; omitting it
  * serves unauthenticated, so an embedder without a password must front the handler with its own
  * access control.
+ *
+ * Sessions whose execution claim was never released resume once the layer is built, exactly as
+ * the Node server process does: a runtime that dies without teardown — an evicted Durable
+ * Object leaves the same durable signature as a killed process — replays orphaned turns on the
+ * next boot, and the sweep is a no-op when nothing is suspended.
  */
-export const make = Effect.fn("ServerFetch.make")(function* (options: ServerOptions = {}, boot: BootOptions = {}) {
+export const make = Effect.fn("ServerFetch.make")(function* (options: ServerOptions = {}) {
   const context = yield* Layer.build(createRoutes(options, () => []).pipe(Layer.provide(HttpServer.layerServices)))
   // Forked so the returned handler is never delayed; resumed drains are already
   // logged and durably recorded by the execution layer.
-  if (boot.resumeSuspendedSessions)
-    yield* Effect.forkDetach(Context.get(context, SessionRestart.Service).resumeSuspendedSessions)
+  yield* Effect.forkDetach(Context.get(context, SessionRestart.Service).resumeSuspendedSessions)
   return Context.get(context, HttpRouter.HttpRouter)
     .asHttpEffect()
     .pipe(

packages/tui/src/app.tsx

@@ -38,6 +38,7 @@ import {
   TuiStartupProvider,
   TuiTerminalEnvironmentProvider,
   useTuiApp,
+  useTuiPaths,
   useTuiStartup,
   type TuiApp,
 } from "./context/runtime"
@@ -85,6 +86,7 @@ import { ArgsProvider, useArgs, type Args } from "./context/args"
 import open from "open"
 import { PromptRefProvider, usePromptRef } from "./context/prompt"
 import { Config, ConfigProvider, useConfig } from "./config"
+import { newSessionLocation } from "./config/new-session-location"
 import { PluginProvider, usePlugin, type PackageResolver } from "./plugin/context"
 import { tuiPluginDirectories } from "./plugin/discovery"
 import { PluginRoute, Slot } from "./plugin/render"
@@ -453,6 +455,7 @@ function App(props: { pair?: DialogPairCredentials }) {
   const log = useLog({ component: "app" })
   const app = useTuiApp()
   const startup = useTuiStartup()
+  const paths = useTuiPaths()
   const config = useConfig()
   const devtools = createMemo(() => config.data.debug?.devtools ?? app.channel === "local")
   const route = useRoute()
@@ -659,10 +662,13 @@ function App(props: { pair?: DialogPairCredentials }) {
         run: () => {
           route.navigate({
             type: "home",
-            location:
+            location: newSessionLocation(
+              config.data.session.new_location,
+              paths.cwd,
               route.data.type === "session"
                 ? (data.session.get(route.data.sessionID)?.location ?? location.ref)
                 : undefined,
+            ),
           })
           dialog.clear()
         },

packages/tui/src/component/devtools-bar.tsx

@@ -384,16 +384,18 @@ export function DevToolsBar() {
               >
                 {turnTokens() ? "[x]" : "[ ]"} Turn token usage
               </Action>
-              <Action
-                onClick={() =>
-                  void config.update((draft) => {
-                    draft.debug = { ...draft.debug, turn_tokens: verboseTurnTokens() ? true : "verbose" }
-                  })
-                }
-                hoverBackground
-              >
-                {verboseTurnTokens() ? "[x]" : "[ ]"} Turn token usage (verbose)
-              </Action>
+              <Show when={Boolean(turnTokens())}>
+                <Action
+                  onClick={() =>
+                    void config.update((draft) => {
+                      draft.debug = { ...draft.debug, turn_tokens: verboseTurnTokens() ? true : "verbose" }
+                    })
+                  }
+                  hoverBackground
+                >
+                  {verboseTurnTokens() ? "[x]" : "[ ]"} Turn token usage (verbose)
+                </Action>
+              </Show>
             </box>
             <For each={groups()}>
               {(group) => (

packages/tui/src/component/dialog-config.tsx

@@ -93,6 +93,15 @@ export const settings: Setting[] = [
     labels: ["off", "on"],
     keywords: ["attachments", "images", "tool output"],
   },
+  {
+    title: "New session location",
+    category: "Session",
+    path: ["session", "new_location"],
+    default: "launch",
+    values: ["launch", "inherit"],
+    labels: ["launch directory", "active session"],
+    keywords: ["directory", "cwd", "inherit"],
+  },
   {
     title: "Enabled",
     category: "Tabs",

packages/tui/src/config/index.tsx

@@ -137,6 +137,9 @@ export const Info = Schema.Struct({
       markdown: Schema.optional(Schema.Literals(["source", "rendered"])).annotate({
         description: "Show Markdown syntax markers or conceal them in rendered transcript content",
       }),
+      new_location: Schema.optional(Schema.Literals(["launch", "inherit"])).annotate({
+        description: "Start new sessions in the TUI launch directory or inherit the active session location",
+      }),
     }),
   ).annotate({ description: "Session transcript presentation settings" }),
   tabs: Schema.optional(
@@ -202,7 +205,7 @@ export const Info = Schema.Struct({
 })
 export type Info = Schema.Schema.Type<typeof Info>
 
-export type Resolved = Omit<Info, "attention" | "cursor" | "keybinds" | "leader" | "mouse" | "tabs"> & {
+export type Resolved = Omit<Info, "attention" | "cursor" | "keybinds" | "leader" | "mouse" | "session" | "tabs"> & {
   attention: {
     enabled: boolean
     notifications: boolean
@@ -218,6 +221,9 @@ export type Resolved = Omit<Info, "attention" | "cursor" | "keybinds" | "leader"
     style: "block" | "underline" | "line" | "default"
     blinking: boolean
   }
+  session: Omit<NonNullable<Info["session"]>, "new_location"> & {
+    new_location: "launch" | "inherit"
+  }
   tabs: {
     enabled: boolean
     scope: "global" | "cwd"
@@ -259,6 +265,10 @@ export function resolve(input: Info, options: { terminalSuspend: boolean }): Res
           blinking: input.cursor.blinking ?? true,
         }
       : undefined,
+    session: {
+      ...input.session,
+      new_location: input.session?.new_location ?? "launch",
+    },
     tabs: {
       ...input.tabs,
       enabled: input.tabs?.enabled ?? true,

packages/tui/src/config/new-session-location.ts

@@ -0,0 +1,10 @@
+import type { LocationRef } from "@opencode-ai/client/promise"
+
+export function newSessionLocation(
+  mode: "launch" | "inherit",
+  launchDirectory: string,
+  current?: LocationRef,
+): LocationRef {
+  if (mode === "inherit" && current) return current
+  return { directory: launchDirectory }
+}

packages/tui/src/mini/runtime.ts

@@ -11,6 +11,7 @@
 import { SessionMessage } from "@opencode-ai/schema/session-message"
 import type { LocationRef } from "@opencode-ai/client/promise"
 import type { Config } from "../config"
+import { newSessionLocation } from "../config/new-session-location"
 import { loadRunAgents, loadRunCommands, loadRunReferences } from "./catalog.shared"
 import {
   resolveMiniSettings,
@@ -48,6 +49,7 @@ type Reconnect = (signal: AbortSignal) => Promise<RunInput["sdk"]>
 
 type RunRuntimeInput = {
   host: MiniHost
+  directory: string
   boot: () => Promise<BootContext>
   resolveSession: (sdk: RunInput["sdk"], signal: AbortSignal) => Promise<ResolvedSession>
   createSession?: CreateSession
@@ -941,7 +943,11 @@ async function runInteractiveRuntime(input: RunRuntimeInput, deps: RunRuntimeDep
               const created = await createSession(
                 state.sdk,
                 {
-                  location: state.location,
+                  location: newSessionLocation(
+                    (await tuiConfigTask).session.new_location,
+                    input.directory,
+                    state.location,
+                  ),
                   agent: state.agent,
                   model: state.model,
                   variant: state.activeVariant,
@@ -1099,6 +1105,7 @@ export async function runInteractiveDeferredMode(input: RunDeferredInput, deps?:
   return runInteractiveRuntime(
     {
       host: input.host,
+      directory: input.directory,
       files: input.files,
       initialInput: input.initialInput,
       thinking: input.thinking,

packages/tui/src/mini/types.ts

@@ -392,7 +392,7 @@ export type FormCancel = {
   location?: LocationRef
 }
 
-export type RunTuiConfig = Pick<Config.Resolved, "keybinds" | "leader" | "theme" | "mini">
+export type RunTuiConfig = Pick<Config.Resolved, "keybinds" | "leader" | "theme" | "mini" | "session">
 
 export type MiniSettings = {
   thinking: "show" | "hide"

packages/tui/src/routes/session/index.tsx

@@ -1222,6 +1222,11 @@ function TurnTokenUsage(props: {
 }) {
   const config = useConfig()
   const theme = useTheme()
+  const renderer = useRenderer()
+  // Collapsed by default: one summary line for the whole turn. Click to
+  // open the full per-step table, click again to close.
+  const [expanded, setExpanded] = createSignal(false)
+  const [hover, setHover] = createSignal(false)
   const verbose = () => config.data.debug?.turn_tokens === "verbose"
   const steps = createMemo(() => {
     let previousCache = props.previousCache
@@ -1257,49 +1262,78 @@ function TurnTokenUsage(props: {
     cached: Math.max("Cached".length, ...steps().map((item) => item.cached.toLocaleString().length)),
     total: Math.max("Total".length, ...steps().map((item) => item.total.toLocaleString().length)),
   }))
+  const summary = createMemo(() => {
+    const items = steps()
+    const last = items[items.length - 1]
+    return {
+      count: items.length,
+      newTokens: items.reduce((sum, item) => sum + item.newTokens, 0),
+      cached: last?.cached ?? 0,
+      total: last?.total ?? 0,
+      reuseDrops: items.filter((item) => item.reuseDrop !== undefined).length,
+    }
+  })
   return (
     <Show when={Boolean(config.data.debug?.turn_tokens) && steps().length > 0}>
       <box paddingLeft={3} flexDirection="column">
-        <box flexDirection="row">
-          <text width={INLINE_TOOL_ICON_WIDTH} fg={theme.text.subdued}>
-            ◈
-          </text>
-          <text fg={theme.text.subdued} attributes={TextAttributes.BOLD}>
-            Tokens
+        <box
+          flexDirection="row"
+          onMouseOver={() => setHover(true)}
+          onMouseOut={() => setHover(false)}
+          onMouseUp={() => {
+            if (renderer.getSelection()?.getSelectedText()) return
+            setExpanded((value) => !value)
+          }}
+        >
+          <text fg={hover() ? theme.text.default : theme.text.subdued} wrapMode="none">
+            <span>{expanded() ? "- " : "+ "}</span>
+            <span style={{ attributes: TextAttributes.BOLD }}>Tokens</span>
+            <span>
+              : {summary().count} {summary().count === 1 ? "step" : "steps"} · {summary().newTokens.toLocaleString()}{" "}
+              new · {summary().cached.toLocaleString()} cached · {summary().total.toLocaleString()} total
+            </span>
+            <Show when={summary().reuseDrops > 0}>
+              <span style={{ fg: theme.text.feedback.warning.default }}>
+                {" "}
+                · ! {summary().reuseDrops} likely cache {summary().reuseDrops === 1 ? "bust" : "busts"}
+              </span>
+            </Show>
           </text>
         </box>
-        <box paddingLeft={INLINE_TOOL_ICON_WIDTH}>
-          <text fg={theme.text.subdued} attributes={TextAttributes.ITALIC}>
-            {"Step".padEnd(columns().step + 2)}
-            {"New".padStart(columns().newTokens)}
-            {"  "}
-            {"Cached".padStart(columns().cached)}
-            {"  "}
-            {"Total".padStart(columns().total)}
-          </text>
-        </box>
-        <For each={steps()}>
-          {(item) => (
-            <box paddingLeft={INLINE_TOOL_ICON_WIDTH} flexDirection="column">
-              <text fg={verbose() && item.finish === "tool-call" ? undefined : theme.text.subdued}>
-                {item.finish.padEnd(columns().step + 2)}
-                <span style={{ attributes: TextAttributes.BOLD }}>
-                  {item.newTokens.toLocaleString().padStart(columns().newTokens)}
-                </span>
-                {"  "}
-                {item.cached.toLocaleString().padStart(columns().cached)}
-                {"  "}
-                {item.total.toLocaleString().padStart(columns().total)}
-              </text>
-              <TurnTokenToolCalls tools={item.tools} />
-              <Show when={item.reuseDrop !== undefined}>
-                <text fg={theme.text.feedback.warning.default}>
-                  ! Likely cache bust: {item.reuseDrop?.toLocaleString()} fewer cached tokens than the previous step
+        <Show when={expanded()}>
+          <box paddingLeft={INLINE_TOOL_ICON_WIDTH}>
+            <text fg={theme.text.subdued} attributes={TextAttributes.ITALIC}>
+              {"Step".padEnd(columns().step + 2)}
+              {"New".padStart(columns().newTokens)}
+              {"  "}
+              {"Cached".padStart(columns().cached)}
+              {"  "}
+              {"Total".padStart(columns().total)}
+            </text>
+          </box>
+          <For each={steps()}>
+            {(item) => (
+              <box paddingLeft={INLINE_TOOL_ICON_WIDTH} flexDirection="column">
+                <text fg={verbose() && item.finish === "tool-call" ? undefined : theme.text.subdued}>
+                  {item.finish.padEnd(columns().step + 2)}
+                  <span style={{ attributes: TextAttributes.BOLD }}>
+                    {item.newTokens.toLocaleString().padStart(columns().newTokens)}
+                  </span>
+                  {"  "}
+                  {item.cached.toLocaleString().padStart(columns().cached)}
+                  {"  "}
+                  {item.total.toLocaleString().padStart(columns().total)}
                 </text>
-              </Show>
-            </box>
-          )}
-        </For>
+                <TurnTokenToolCalls tools={item.tools} />
+                <Show when={item.reuseDrop !== undefined}>
+                  <text fg={theme.text.feedback.warning.default}>
+                    ! Likely cache bust: {item.reuseDrop?.toLocaleString()} fewer cached tokens than the previous step
+                  </text>
+                </Show>
+              </box>
+            )}
+          </For>
+        </Show>
       </box>
     </Show>
   )
@@ -1780,7 +1814,7 @@ function CompactionMessage(props: { message: Extract<SessionMessageInfo, { type:
             streaming={true}
             internalBlockMode="top-level"
             content={content()}
-            tableOptions={{ style: "grid" }}
+            tableOptions={{ style: "grid", cellPaddingX: 1 }}
             conceal={ctx.markdownMode() === "rendered"}
             fg={theme.markdown.text}
             bg={theme.background.default}
@@ -2230,7 +2264,7 @@ function TextPart(props: { last: boolean; part: SessionMessageAssistantText }) {
           streaming={true}
           internalBlockMode="top-level"
           content={props.part.text.trim()}
-          tableOptions={{ style: "grid" }}
+          tableOptions={{ style: "grid", cellPaddingX: 1 }}
           conceal={ctx.markdownMode() === "rendered"}
           fg={theme.markdown.text}
           bg={theme.background.default}

packages/tui/test/config-v2.test.tsx

@@ -25,6 +25,8 @@ test("validates the session tabs setting", () => {
   expect(() => decode({ tabs: { enabled: "on" } })).toThrow()
   expect(decode({ prompt: { image_preview: true } })).toEqual({ prompt: { image_preview: true } })
   expect(decode({ session: { image_preview: true } })).toEqual({ session: { image_preview: true } })
+  expect(decode({ session: { new_location: "inherit" } })).toEqual({ session: { new_location: "inherit" } })
+  expect(() => decode({ session: { new_location: "current" } })).toThrow()
 })
 
 test("resolves nested config and keybind defaults", () => {
@@ -45,6 +47,7 @@ test("resolves nested config and keybind defaults", () => {
   expect(config.diffs).toEqual({ view: "split" })
   expect(config.debug).toEqual({ devtools: true })
   expect(config.tabs).toEqual({ enabled: true, scope: "cwd", layout: "horizontal" })
+  expect(config.session.new_location).toBe("launch")
 })
 
 test("shows resolved tab defaults in settings", () => {
@@ -53,6 +56,10 @@ test("shows resolved tab defaults in settings", () => {
   expect(settings.find((setting) => setting.path.join(".") === "tabs.layout")?.default).toBe("horizontal")
 })
 
+test("shows the new session location default in settings", () => {
+  expect(settings.find((setting) => setting.path.join(".") === "session.new_location")?.default).toBe("launch")
+})
+
 test("provides config and its host interface", async () => {
   const config = resolve({}, { terminalSuspend: true })
   let current = {}

packages/tui/test/new-session-location.test.ts

@@ -0,0 +1,19 @@
+import { expect, test } from "bun:test"
+import { newSessionLocation } from "../src/config/new-session-location"
+
+test("uses the launch directory by default", () => {
+  expect(newSessionLocation("launch", "/launch", { directory: "/session", workspaceID: "work-1" })).toEqual({
+    directory: "/launch",
+  })
+})
+
+test("inherits the active session location when configured", () => {
+  expect(newSessionLocation("inherit", "/launch", { directory: "/session", workspaceID: "work-1" })).toEqual({
+    directory: "/session",
+    workspaceID: "work-1",
+  })
+})
+
+test("falls back to the launch directory without an active session", () => {
+  expect(newSessionLocation("inherit", "/launch")).toEqual({ directory: "/launch" })
+})