refactor(tui): persist exact anchors and group expansion

refactor(tui): render nested groups with message anchors
fix(app): preserve loopback server host (#44296 )
2026-09-12 11:56:23 +00:00 · 2026-09-11 18:37:10 +00:00 · 2026-09-11 11:52:36 +00:00 · 2026-09-11 06:41:38 +00:00 · 2026-09-11 06:13:32 +00:00 · 2026-09-11 05:58:02 +00:00
166 changed files with 7394 additions and 4034 deletions
@@ -18,7 +18,6 @@ const WebSocketResponseCreate = Schema.StructWithRest(Schema.Struct({ type: Sche
 ])
 const decodeMessage = ProviderShared.validateWith(Schema.decodeUnknownEffect(WebSocketResponseCreate))
 const encodeMessage = Schema.encodeSync(Schema.fromJsonString(WebSocketResponseCreate))
-const decodeEvent = Schema.decodeUnknownEffect(OpenResponses.protocol.stream.event)

 export interface Options {
  readonly id: string
@@ -27,6 +26,7 @@ export interface Options {
  readonly enabled?: (url: string) => boolean
  readonly url?: (url: string) => string
  readonly headers?: (headers: Headers.Headers) => Headers.Headers
+  readonly continuation?: OpenResponsesContinuation.Shape
 }

 export interface Prepared {
@@ -60,7 +60,7 @@ const driver = (options: Options, body: string): WebSocketChannelDriver => {
      }),
    observe: (_create, frame) =>
      Effect.gen(function* () {
-        const event = yield* decodeEvent(frame).pipe(
+        const event = yield* OpenResponses.decodeChannelEvent(frame).pipe(
          Effect.mapError((cause) =>
            ProviderShared.eventError(options.id, `Invalid ${options.name} WebSocket event`, frame, cause),
          ),
@@ -163,6 +163,7 @@ export const transport = <Body>(options: Options): Transport<Body, Prepared, str
                    request: create.request,
                    message: create.message,
                    base,
+                    continuation: options.continuation,
                  }),
                }
              })
@@ -6,7 +6,6 @@ import { OpenResponses } from "./open-responses.js"

 const PROTOCOL = "open-responses.websocket.v1"
 const VERSION = 1
-const decodeEvent = Schema.decodeUnknownEffect(OpenResponses.protocol.stream.event)

 interface CheckpointValue {
  readonly version: typeof VERSION
@@ -15,12 +14,19 @@ interface CheckpointValue {
  readonly output: ReadonlyArray<unknown>
 }

+/**
+ * Fields to send next to `previous_response_id` on an incremental step, or undefined to send the step in full.
+ * Whether omitted fields carry over from the continued response is provider behavior the route must know.
+ */
+export type Shape = (request: Readonly<Record<string, unknown>>) => Readonly<Record<string, unknown>> | undefined
+
 export interface DriverInput {
  readonly id: string
  readonly name: string
  readonly request: Readonly<Record<string, unknown>>
  readonly message: string
  readonly base: WebSocketChannelDriver
+  readonly continuation?: Shape
 }

 const checkpointValue = (checkpoint: ChannelCheckpoint | undefined): CheckpointValue | undefined => {
@@ -127,22 +133,26 @@ const rejected = (

 export const driver = (input: DriverInput): WebSocketChannelDriver => {
  const { previous_response_id: _previousResponseID, ...request } = input.request
+  const shape = input.continuation ?? ((fields: Readonly<Record<string, unknown>>) => fields)
  let output: OpenResponses.StreamItem[] = []
  return {
    create: (checkpoint) =>
      Effect.sync(() => {
        output = []
        const previous = checkpointValue(checkpoint)
-        const delta = previous ? incremental(request, previous) : undefined
-        if (!previous || !delta) return { message: ProviderShared.encodeJson(request), mode: "full" as const }
+        // Ask the route first: diffing the whole history is wasted when it declines the continuation.
+        const fields = previous ? shape(request) : undefined
+        const delta = previous && fields ? incremental(request, previous) : undefined
+        if (!previous || !fields || !delta)
+          return { message: ProviderShared.encodeJson(request), mode: "full" as const }
        return {
-          message: ProviderShared.encodeJson({ ...request, input: delta, previous_response_id: previous.responseID }),
+          message: ProviderShared.encodeJson({ ...fields, input: delta, previous_response_id: previous.responseID }),
          mode: "incremental" as const,
        }
      }),
    observe: (create, frame) =>
      Effect.gen(function* () {
-        const event = yield* decodeEvent(frame).pipe(
+        const event = yield* OpenResponses.decodeChannelEvent(frame).pipe(
          Effect.mapError((cause) =>
            ProviderShared.eventError(input.id, `Invalid ${input.name} WebSocket event`, frame, cause),
          ),
@@ -195,4 +205,4 @@ export const driver = (input: DriverInput): WebSocketChannelDriver => {
  }
 }

-export const OpenResponsesContinuation = { driver } as const
+export * as OpenResponsesContinuation from "./open-responses-continuation.js"
@@ -1,4 +1,4 @@
-import { Effect, Option, Schema } from "effect"
+import { Effect, Option, Schema, SchemaGetter } from "effect"
 import type { Content } from "@opencode/schema/tool"
 import { HttpTransport } from "../route/transport/index.js"
 import { Protocol } from "../route/protocol.js"
@@ -325,9 +325,8 @@ export const StreamItem = Schema.StructWithRest(
 export type StreamItem = Schema.Schema.Type<typeof StreamItem>
 export type OutputItem = StreamItem & { readonly id: string }

-// The Responses schema puts streaming error details at the top level and
-// response failures under `response.error`. WebSocket failures use an
-// event-level `error` envelope, so accept all three shapes here.
+// Responses-compatible providers put streaming error details at the top level or
+// under `error`, and response failures under `response.error`. Accept all three shapes.
 // https://www.openresponses.org/specification
 const OpenResponsesErrorPayload = Schema.Struct({
  type: optionalNull(Schema.String),
@@ -401,10 +400,39 @@ export const Event = Schema.StructWithRest(
    headers: Schema.optional(Schema.Unknown),
  }),
  [Schema.Record(Schema.String, Schema.Unknown)],
+).pipe(
+  Schema.decode({
+    decode: SchemaGetter.transform((event) => {
+      if (event.type !== "error" || event.error != null) return event
+      const { code, message, param, ...rest } = event
+      if (code === undefined && message === undefined && param === undefined) return event
+      // Flat errors (for example, Meta's) can also arrive through generic Responses endpoints.
+      return { ...rest, error: { code, message, param } }
+    }),
+    encode: SchemaGetter.passthrough(),
+  }),
 )
 export type Event = Schema.Schema.Type<typeof Event>
 export type NormalizedEvent = Event & { readonly item?: OutputItem | null }

+const decodeEventValue = Schema.decodeUnknownEffect(Event)
+const decodeFrame = Schema.decodeUnknownEffect(ProviderShared.Json)
+
+/**
+ * Decodes one WebSocket frame. xAI answers a rejected `response.create` with `{ "error": { "message", "type" } }` and no
+ * event type; that envelope reads as an error event so the failure classifies instead of failing decoding.
+ */
+export const decodeChannelEvent = (frame: string) =>
+  decodeFrame(frame).pipe(
+    Effect.flatMap((value) =>
+      decodeEventValue(
+        ProviderShared.isRecord(value) && value.type === undefined && ProviderShared.isRecord(value.error)
+          ? { ...value, type: "error" }
+          : value,
+      ),
+    ),
+  )
+
 export interface ProviderAdapter {
  readonly id: string
  readonly name: string
@@ -6,7 +6,7 @@ import { AuthOptions, type AtLeastOne, type ProviderAuthOption } from "../route/
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
 import { Framing } from "../route/framing.js"
-import { ProviderID, ToolDefinition, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, ToolDefinition, type ModelID } from "../schema/index.js"

 export const id = ProviderID.make("alibaba")

@@ -82,8 +82,13 @@ export const configure = (input: Config) => {
        ? hosts.get(region)
        : `${workspaceID}.${region}.maas.aliyuncs.com`
  if (baseURL === undefined) {
-    if (region === undefined) throw new Error("Alibaba requires region or baseURL")
-    if (host === undefined) throw new Error(`Alibaba region ${region} requires workspaceID or baseURL`)
+    if (region === undefined)
+      throw new ProviderConfigurationError({ provider: id, message: "Alibaba requires region or baseURL" })
+    if (host === undefined)
+      throw new ProviderConfigurationError({
+        provider: id,
+        message: `Alibaba region ${region} requires workspaceID or baseURL`,
+      })
  }
  const opts = { ...rest, auth: AuthOptions.bearer(input, ["DASHSCOPE_API_KEY", "ALIBABA_API_KEY"]) }
  const common = { ...opts, endpoint: { baseURL: baseURL ?? `https://${host}/compatible-mode/v1` } }
@@ -4,7 +4,7 @@ import type { ProviderPackage } from "../provider-package.js"
 import { OpenAIChat } from "../protocols/openai-chat.js"
 import { OpenResponses } from "../protocols/open-responses.js"
 import { BedrockAuth, type Credentials } from "../protocols/utils/bedrock-auth.js"
-import { ProviderID, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type ModelID } from "../schema/index.js"
 import { withOpenAIOptions, type OpenAIProviderOptionsInput } from "./openai-options.js"

 export const id = ProviderID.make("amazon-bedrock")
@@ -79,9 +79,12 @@ const defaults = (input: Config) => {

 export const configure = (input: Config = {}) => {
  if (input.auth === "bearer" && input.apiKey === undefined && process.env.AWS_BEARER_TOKEN_BEDROCK === undefined)
-    throw new Error("Amazon Bedrock Mantle bearer auth requires apiKey")
+    throw new ProviderConfigurationError({ provider: id, message: "Amazon Bedrock Mantle bearer auth requires apiKey" })
  if (input.auth === "sigv4" && input.apiKey !== undefined)
-    throw new Error("Amazon Bedrock Mantle SigV4 auth does not accept apiKey")
+    throw new ProviderConfigurationError({
+      provider: id,
+      message: "Amazon Bedrock Mantle SigV4 auth does not accept apiKey",
+    })
  const configuredResponsesRoute = configuredRoute(responsesRoute, input)
  const configuredChatRoute = configuredRoute(chatRoute, input)
  const modelDefaults = defaults(input)
@@ -1,6 +1,6 @@
 import type { RouteDefaultsInput } from "../route/client.js"
 import type { ProviderPackage } from "../provider-package.js"
-import { ProviderID, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type ModelID } from "../schema/index.js"
 import * as BedrockConverse from "../protocols/bedrock-converse.js"
 import type { BedrockCredentials } from "../protocols/bedrock-converse.js"
 import { BedrockAuth } from "../protocols/utils/bedrock-auth.js"
@@ -39,8 +39,9 @@ const bedrockBaseURL = (region: string) => `https://bedrock-runtime.${region}.am
 const configuredRoute = (input: Config) => {
  const { apiKey, auth, credentials, profile, region, baseURL, ...rest } = input
  if (auth === "bearer" && apiKey === undefined && process.env.AWS_BEARER_TOKEN_BEDROCK === undefined)
-    throw new Error("Amazon Bedrock bearer auth requires apiKey")
-  if (auth === "sigv4" && apiKey !== undefined) throw new Error("Amazon Bedrock SigV4 auth does not accept apiKey")
+    throw new ProviderConfigurationError({ provider: id, message: "Amazon Bedrock bearer auth requires apiKey" })
+  if (auth === "sigv4" && apiKey !== undefined)
+    throw new ProviderConfigurationError({ provider: id, message: "Amazon Bedrock SigV4 auth does not accept apiKey" })
  const resolvedRegion = BedrockAuth.resolveRegion(input)
  return BedrockConverse.route.with({
    ...rest,
@@ -3,7 +3,7 @@ import { AnthropicMessages } from "../protocols/anthropic-messages.js"
 import { Auth } from "../route/auth.js"
 import type { ProviderAuthOption } from "../route/auth-options.js"
 import type { RouteDefaultsInput } from "../route/client.js"
-import { ProviderID, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type ModelID } from "../schema/index.js"

 export type AnthropicOptionsInput = AnthropicMessages.OptionsInput
 export type AnthropicProviderOptionsInput = AnthropicMessages.ProviderOptionsInput
@@ -36,8 +36,12 @@ const auth = (input: ProviderAuthOption<"optional">) => {
 }

 export const configure = (input: Config) => {
-  if (!input.baseURL) throw new Error("Anthropic-compatible providers require a baseURL")
  const provider = input.provider ?? "anthropic-compatible"
+  if (!input.baseURL)
+    throw new ProviderConfigurationError({
+      provider: ProviderID.make(provider),
+      message: "Anthropic-compatible providers require a baseURL",
+    })
  const { provider: _, baseURL, apiKey: _apiKey, auth: _auth, ...rest } = input
  const route = AnthropicMessages.route.with({
    ...rest,
@@ -61,8 +65,13 @@ export const model: ProviderPackage.Definition<Settings, AnthropicMessages.Provi
  modelID,
  settings,
 ) => {
+  // Read before the exclusivity check narrows a conflicting settings object to `never`.
+  const provider = ProviderID.make(settings.provider ?? id)
  if (settings.apiKey !== undefined && settings.authToken !== undefined)
-    throw new Error("Anthropic-compatible apiKey cannot be combined with authToken")
+    throw new ProviderConfigurationError({
+      provider,
+      message: "Anthropic-compatible apiKey cannot be combined with authToken",
+    })
  return configure({
    ...(settings.authToken === undefined ? { apiKey: settings.apiKey } : { auth: Auth.bearer(settings.authToken) }),
    baseURL: settings.baseURL,
@@ -2,7 +2,7 @@ import type { RouteDefaultsInput } from "../route/client.js"
 import { Auth } from "../route/auth.js"
 import type { ProviderAuthOption } from "../route/auth-options.js"
 import type { ProviderPackage } from "../provider-package.js"
-import { ProviderID, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type ModelID } from "../schema/index.js"
 import { AnthropicMessages } from "../protocols/anthropic-messages.js"
 import { AnthropicCompatible } from "./anthropic-compatible.js"

@@ -57,7 +57,10 @@ export const model: ProviderPackage.Definition<Settings, AnthropicMessages.Provi
  settings,
 ) => {
  if (settings.apiKey !== undefined && settings.authToken !== undefined)
-    throw new Error("Anthropic apiKey cannot be combined with authToken")
+    throw new ProviderConfigurationError({
+      provider: id,
+      message: "Anthropic apiKey cannot be combined with authToken",
+    })
  return configure({
    ...(settings.authToken === undefined ? { apiKey: settings.apiKey } : { auth: Auth.bearer(settings.authToken) }),
    baseURL: settings.baseURL,
@@ -3,7 +3,7 @@ import { Auth } from "../route/auth.js"
 import { type AtLeastOne, type ProviderAuthOption } from "../route/auth-options.js"
 import type { Route, RouteDefaultsInput, CompactionOperations } from "../route/client.js"
 import type { ProviderPackage } from "../provider-package.js"
-import { ProviderID, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type ModelID } from "../schema/index.js"
 import * as OpenAIChat from "../protocols/openai-chat.js"
 import * as OpenAIResponses from "../protocols/openai-responses.js"
 import { ProviderShared } from "../protocols/shared.js"
@@ -163,7 +163,7 @@ const config = (settings: Settings): Config => {
  }
  if (settings.baseURL !== undefined) return { ...common, baseURL: settings.baseURL }
  if (settings.resourceName !== undefined) return { ...common, resourceName: settings.resourceName }
-  throw new Error("Azure requires resourceName or baseURL")
+  throw new ProviderConfigurationError({ provider: id, message: "Azure requires resourceName or baseURL" })
 }

 export const responsesModel: ProviderPackage.Definition<
@@ -5,7 +5,7 @@ import { Auth } from "../route/auth.js"
 import type { AtLeastOne, ProviderAuthOption } from "../route/auth-options.js"
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
-import { ProviderID, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type ModelID } from "../schema/index.js"
 import type { OpenAIProviderOptionsInput } from "./openai-options.js"

 export const id = ProviderID.make("cloudflare-ai-gateway")
@@ -35,7 +35,11 @@ export type Settings = ProviderPackage.Settings &

 export const baseURL = (input: GatewayURL) => {
  if (input.baseURL) return input.baseURL
-  if (!input.accountId) throw new Error("CloudflareAIGateway.configure requires accountId unless baseURL is supplied")
+  if (!input.accountId)
+    throw new ProviderConfigurationError({
+      provider: id,
+      message: "CloudflareAIGateway.configure requires accountId unless baseURL is supplied",
+    })
  return `https://gateway.ai.cloudflare.com/v1/${encodeURIComponent(input.accountId)}/${encodeURIComponent(input.gatewayId?.trim() || "default")}/compat`
 }

@@ -3,7 +3,7 @@ import { OpenAIChat } from "../protocols/openai-chat.js"
 import { AuthOptions, type AtLeastOne, type ProviderAuthOption } from "../route/auth-options.js"
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
-import { ProviderID, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type ModelID } from "../schema/index.js"
 import type { OpenAIProviderOptionsInput } from "./openai-options.js"

 export const id = ProviderID.make("cloudflare-workers-ai")
@@ -28,7 +28,11 @@ export type Settings = ProviderPackage.Settings &

 export const baseURL = (input: WorkersAIURL) => {
  if (input.baseURL) return input.baseURL
-  if (!input.accountId) throw new Error("CloudflareWorkersAI.configure requires accountId unless baseURL is supplied")
+  if (!input.accountId)
+    throw new ProviderConfigurationError({
+      provider: id,
+      message: "CloudflareWorkersAI.configure requires accountId unless baseURL is supplied",
+    })
  return `https://api.cloudflare.com/client/v4/accounts/${encodeURIComponent(input.accountId)}/ai/v1`
 }

@@ -2,7 +2,7 @@ import type { ProviderPackage } from "../provider-package.js"
 import { OpenAIChat } from "../protocols/openai-chat.js"
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
-import { ProviderID, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type ModelID } from "../schema/index.js"
 import { GoogleVertexShared } from "./google-vertex-shared.js"
 import type { OpenAIProviderOptionsInput } from "./openai-options.js"

@@ -37,7 +37,8 @@ const route = Route.make({
 export const routes = [route]

 const configuredRoute = (input: Config) => {
-  if ("apiKey" in input && input.apiKey !== undefined) throw new Error("Google Vertex Chat does not support API keys")
+  if ("apiKey" in input && input.apiKey !== undefined)
+    throw new ProviderConfigurationError({ provider: id, message: "Google Vertex Chat does not support API keys" })
  const {
    accessToken: _accessToken,
    auth: _auth,
@@ -74,7 +75,8 @@ export const provider = {
 }

 export const model: ProviderPackage.Definition<Settings, OpenAIProviderOptionsInput>["model"] = (modelID, settings) => {
-  if (settings.apiKey !== undefined) throw new Error("Google Vertex Chat does not support API keys")
+  if (settings.apiKey !== undefined)
+    throw new ProviderConfigurationError({ provider: id, message: "Google Vertex Chat does not support API keys" })
  return configure({
    accessToken: settings.accessToken,
    baseURL: settings.baseURL,
@@ -5,7 +5,7 @@ import { Auth } from "../route/auth.js"
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
 import { Protocol } from "../route/protocol.js"
-import { ProviderID, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type ModelID } from "../schema/index.js"
 import { GoogleVertexShared } from "./google-vertex-shared.js"

 export type AnthropicOptionsInput = AnthropicMessages.OptionsInput
@@ -67,7 +67,7 @@ export const routes = [route]

 const configuredRoute = (input: Config) => {
  if ("apiKey" in input && input.apiKey !== undefined)
-    throw new Error("Google Vertex Messages does not support API keys")
+    throw new ProviderConfigurationError({ provider: id, message: "Google Vertex Messages does not support API keys" })
  const {
    accessToken: _accessToken,
    auth: _auth,
@@ -107,7 +107,8 @@ export const model: ProviderPackage.Definition<Settings, AnthropicMessages.Provi
  modelID,
  settings,
 ) => {
-  if (settings.apiKey !== undefined) throw new Error("Google Vertex Messages does not support API keys")
+  if (settings.apiKey !== undefined)
+    throw new ProviderConfigurationError({ provider: id, message: "Google Vertex Messages does not support API keys" })
  return configure({
    accessToken: settings.accessToken,
    baseURL: settings.baseURL,
@@ -2,7 +2,7 @@ import type { ProviderPackage } from "../provider-package.js"
 import { OpenResponses } from "../protocols/open-responses.js"
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
-import { ProviderID, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type ModelID } from "../schema/index.js"
 import { GoogleVertexShared } from "./google-vertex-shared.js"
 import type { OpenResponsesProviderOptionsInput } from "./open-responses-options.js"

@@ -39,7 +39,7 @@ export const routes = [route]

 const configuredRoute = (input: Config) => {
  if ("apiKey" in input && input.apiKey !== undefined)
-    throw new Error("Google Vertex Responses does not support API keys")
+    throw new ProviderConfigurationError({ provider: id, message: "Google Vertex Responses does not support API keys" })
  const {
    accessToken: _accessToken,
    auth: _auth,
@@ -79,7 +79,8 @@ export const model: ProviderPackage.Definition<Settings, OpenResponsesProviderOp
  modelID,
  settings,
 ) => {
-  if (settings.apiKey !== undefined) throw new Error("Google Vertex Responses does not support API keys")
+  if (settings.apiKey !== undefined)
+    throw new ProviderConfigurationError({ provider: id, message: "Google Vertex Responses does not support API keys" })
  return configure({
    accessToken: settings.accessToken,
    baseURL: settings.baseURL,
@@ -1,8 +1,10 @@
 import type { AnyAuthClient } from "google-auth-library"
 import { Effect, Redacted } from "effect"
 import { Auth, MissingCredentialError } from "../route/auth.js"
+import { ProviderConfigurationError, ProviderID } from "../schema/index.js"

 const SCOPE = "https://www.googleapis.com/auth/cloud-platform"
+const id = ProviderID.make("google-vertex")

 export type OAuthOptions =
  | { readonly accessToken?: string; readonly auth?: never }
@@ -35,12 +37,18 @@ export const host = (location: string) => {

 export const requireProject = (value: string | undefined) => {
  if (value) return value
-  throw new Error("Google Vertex requires a project when baseURL is not configured")
+  throw new ProviderConfigurationError({
+    provider: id,
+    message: "Google Vertex requires a project when baseURL is not configured",
+  })
 }

 export const apiKey = (input: ApiKeyOptions) => {
  if (input.apiKey !== undefined && (input.accessToken !== undefined || input.auth !== undefined))
-    throw new Error("Google Vertex apiKey cannot be combined with accessToken or auth")
+    throw new ProviderConfigurationError({
+      provider: id,
+      message: "Google Vertex apiKey cannot be combined with accessToken or auth",
+    })
  if (input.accessToken !== undefined || input.auth !== undefined) return undefined
  return input.apiKey ?? process.env.GOOGLE_VERTEX_API_KEY
 }
@@ -68,7 +76,10 @@ const adc = (project?: string) => {

 export const oauth = (input: OAuthOptions, project?: string) => {
  if (input.accessToken !== undefined && input.auth !== undefined)
-    throw new Error("Google Vertex accessToken cannot be combined with auth")
+    throw new ProviderConfigurationError({
+      provider: id,
+      message: "Google Vertex accessToken cannot be combined with auth",
+    })
  if (input.auth) return input.auth
  if (input.accessToken !== undefined) return Auth.bearer(input.accessToken)
  return adc(project)
@@ -6,7 +6,7 @@ import { Auth } from "../route/auth.js"
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
 import { Framing } from "../route/framing.js"
-import { ProviderID, type LLMRequest, type ModelID } from "../schema/index.js"
+import { ProviderConfigurationError, ProviderID, type LLMRequest, type ModelID } from "../schema/index.js"
 import { GoogleVertexShared } from "./google-vertex-shared.js"

 export interface GeminiOptionsInput extends Gemini.OptionsInput {
@@ -93,7 +93,10 @@ const configuredRoute = (input: Config, modelID: string | ModelID) => {
  const apiKey = GoogleVertexShared.apiKey(input)
  const endpointModel = String(modelID).startsWith("endpoints/")
  if (apiKey !== undefined && endpointModel)
-    throw new Error("Google Vertex tuned models do not support Express Mode API keys")
+    throw new ProviderConfigurationError({
+      provider: id,
+      message: "Google Vertex tuned models do not support Express Mode API keys",
+    })
  const location = GoogleVertexShared.location(inputLocation, "us-central1")
  const project = GoogleVertexShared.project(inputProject)
  const endpoint =
@@ -123,7 +126,10 @@ export const provider = {
 }
 export const model: ProviderPackage.Definition<Settings, GeminiProviderOptionsInput>["model"] = (modelID, settings) => {
  if (settings.apiKey !== undefined && settings.accessToken !== undefined)
-    throw new Error("Google Vertex apiKey cannot be combined with accessToken or auth")
+    throw new ProviderConfigurationError({
+      provider: id,
+      message: "Google Vertex apiKey cannot be combined with accessToken or auth",
+    })
  return configure({
    ...(settings.apiKey === undefined ? { accessToken: settings.accessToken } : { apiKey: settings.apiKey }),
    baseURL: settings.baseURL,
@@ -41,6 +41,10 @@ const responsesRoute = Route.make({
    id: "openai-responses",
    name: "xAI Responses",
    rotateAfterMs: RESPONSES_WEBSOCKET_ROTATE_AFTER_MS,
+    // xAI continues a chain only from stored responses: with `store: false` (the route default) `previous_response_id`
+    // fails with "Response with id=… not found", so those steps are sent in full over the reused connection. It also
+    // rejects `instructions` next to `previous_response_id` and keeps the instructions of the response it continues.
+    continuation: ({ instructions: _instructions, ...request }) => (request.store === false ? undefined : request),
  }),
  defaults: { providerOptions: { store: false, include: ["reasoning.encrypted_content"] } },
 })
@@ -23,6 +23,7 @@ import {
  LanguageModel,
  LLMEvent,
  InvalidProviderOutputError,
+  ProviderConfigurationError,
  ProviderID,
  mergeGenerationOptions,
  mergeHttpOptions,
@@ -128,7 +129,10 @@ const makeRouteLanguageModel = <Options extends ProviderOptions, Compact extends
  const provider = route.provider ?? ("provider" in mapped ? mapped.provider : undefined)
  if (!provider) throw new Error(`Route.model(${route.id}) requires a provider`)
  if (!endpointBaseURL(route.endpoint))
-    throw new Error(`Route.model(${route.id}) requires an endpoint baseURL — configure it on the route first`)
+    throw new ProviderConfigurationError({
+      provider: ProviderID.make(provider),
+      message: `Route.model(${route.id}) requires an endpoint baseURL — configure it on the route first`,
+    })
  return LanguageModel.make<Options, Compact>({
    ...mapped,
    provider,
@@ -50,6 +50,19 @@ export class UnsupportedOperationError extends Schema.TaggedError<UnsupportedOpe
  route: Schema.optional(RouteID),
 }) {}

+/**
+ * Provider settings that are missing, conflicting, or unsupported, such as
+ * Azure without `resourceName` or `baseURL`. Thrown synchronously while a
+ * provider facade or package entrypoint configures a model, before any
+ * request exists, so it is not an `AIError` reason.
+ */
+export class ProviderConfigurationError extends Schema.TaggedError<ProviderConfigurationError>(
+  "AI.Error.ProviderConfiguration",
+)("ProviderConfiguration", {
+  provider: ProviderID,
+  message: Schema.String,
+}) {}
+
 export class NoRouteError extends Schema.TaggedError<NoRouteError>("AI.Error.NoRoute")("NoRoute", {
  ...ReasonFields,
  route: RouteID,
@@ -3,6 +3,9 @@ import { model } from "@opencode/ai/providers/openai"
 import { LLM } from "../src/index.js"
 import { Endpoint } from "../src/route/endpoint.js"

+const configuration = (provider: string, message: string) =>
+  expect.objectContaining({ _tag: "ProviderConfiguration", provider, message })
+
 describe("provider package entrypoints", () => {
  test("semantic API aliases expose the same contract", async () => {
    const modules = await Promise.all([
@@ -322,7 +325,7 @@ describe("provider package entrypoints", () => {
    const AnthropicCompatible = await import("@opencode/ai/providers/anthropic-compatible")
    expect(() =>
      Reflect.apply(AnthropicCompatible.model, undefined, ["compatible-model", { apiKey: "fixture" }]),
-    ).toThrow("Anthropic-compatible providers require a baseURL")
+    ).toThrow(configuration("anthropic-compatible", "Anthropic-compatible providers require a baseURL"))
  })

  test("rejects conflicting Anthropic-compatible auth settings at runtime", async () => {
@@ -337,10 +340,10 @@ describe("provider package entrypoints", () => {
          baseURL: "https://messages.example.test/v1",
        },
      ]),
-    ).toThrow("Anthropic-compatible apiKey cannot be combined with authToken")
+    ).toThrow(configuration("anthropic-compatible", "Anthropic-compatible apiKey cannot be combined with authToken"))
    expect(() =>
      Reflect.apply(Anthropic.model, undefined, ["claude-sonnet-4-6", { apiKey: "fixture", authToken: "token" }]),
-    ).toThrow("Anthropic apiKey cannot be combined with authToken")
+    ).toThrow(configuration("anthropic", "Anthropic apiKey cannot be combined with authToken"))
  })

  test("maps legacy OpenAI organization and project settings to headers", () => {
@@ -490,43 +493,45 @@ describe("provider package entrypoints", () => {
        "gemini-3.5-flash",
        { accessToken: "token", apiKey: "fixture", project: "vertex-project" },
      ]),
-    ).toThrow("Google Vertex apiKey cannot be combined with accessToken or auth")
+    ).toThrow(configuration("google-vertex", "Google Vertex apiKey cannot be combined with accessToken or auth"))
    const configured = Reflect.apply(GoogleVertex.configure, undefined, [
      { accessToken: "token", auth: {}, project: "vertex-project" },
    ])
-    expect(() => configured.model("gemini-3.5-flash")).toThrow("Google Vertex accessToken cannot be combined with auth")
+    expect(() => configured.model("gemini-3.5-flash")).toThrow(
+      configuration("google-vertex", "Google Vertex accessToken cannot be combined with auth"),
+    )
    expect(() =>
      Reflect.apply(GoogleVertexMessages.model, undefined, [
        "claude-sonnet-4-6",
        { apiKey: "fixture", project: "vertex-project" },
      ]),
-    ).toThrow("Google Vertex Messages does not support API keys")
+    ).toThrow(configuration("google-vertex", "Google Vertex Messages does not support API keys"))
    expect(() =>
      Reflect.apply(Providers.GoogleVertexMessages.configure, undefined, [
        { apiKey: "fixture", project: "vertex-project" },
      ]),
-    ).toThrow("Google Vertex Messages does not support API keys")
+    ).toThrow(configuration("google-vertex", "Google Vertex Messages does not support API keys"))
    expect(() =>
      Reflect.apply(GoogleVertexChat.model, undefined, [
        "deepseek-ai/deepseek-v3.2-maas",
        { apiKey: "fixture", project: "vertex-project" },
      ]),
-    ).toThrow("Google Vertex Chat does not support API keys")
+    ).toThrow(configuration("google-vertex", "Google Vertex Chat does not support API keys"))
    expect(() =>
      Reflect.apply(Providers.GoogleVertexChat.configure, undefined, [
        { apiKey: "fixture", project: "vertex-project" },
      ]),
-    ).toThrow("Google Vertex Chat does not support API keys")
+    ).toThrow(configuration("google-vertex", "Google Vertex Chat does not support API keys"))
    expect(() =>
      Reflect.apply(GoogleVertexResponses.model, undefined, [
        "xai/grok-4.20-reasoning",
        { apiKey: "fixture", project: "vertex-project" },
      ]),
-    ).toThrow("Google Vertex Responses does not support API keys")
+    ).toThrow(configuration("google-vertex", "Google Vertex Responses does not support API keys"))
    expect(() =>
      Reflect.apply(Providers.GoogleVertexResponses.configure, undefined, [
        { apiKey: "fixture", project: "vertex-project" },
      ]),
-    ).toThrow("Google Vertex Responses does not support API keys")
+    ).toThrow(configuration("google-vertex", "Google Vertex Responses does not support API keys"))
  })
 })
@@ -76,7 +76,13 @@ it.effect("Alibaba owns regional shared and workspace-specific endpoints", () =>

 test("Alibaba requires explicit placement and supports complete base URL overrides", () => {
  for (const region of ["eu-central-1", "ap-northeast-1", "future-region"])
-    expect(() => Alibaba.configure({ region })).toThrow("requires workspaceID or baseURL")
+    expect(() => Alibaba.configure({ region })).toThrow(
+      expect.objectContaining({
+        _tag: "ProviderConfiguration",
+        provider: "alibaba",
+        message: `Alibaba region ${region} requires workspaceID or baseURL`,
+      }),
+    )
  for (const config of [
    { baseURL: "https://gateway.example/prefix" },
    { region: "future-region", workspaceID: "ignored", baseURL: "https://gateway.example/prefix" },
@@ -1458,7 +1458,13 @@ describe("Bedrock Converse route", () => {
        expect(headers.get("authorization")).toContain("Credential=AKIACHAINEXAMPLE/")
        expect(headers.get("authorization")).toContain("/ap-southeast-2/bedrock/aws4_request")
      }
-      expect(() => AmazonBedrock.configure({ auth: "sigv4", apiKey: "k" })).toThrow("does not accept apiKey")
+      expect(() => AmazonBedrock.configure({ auth: "sigv4", apiKey: "k" })).toThrow(
+        expect.objectContaining({
+          _tag: "ProviderConfiguration",
+          provider: "amazon-bedrock",
+          message: "Amazon Bedrock SigV4 auth does not accept apiKey",
+        }),
+      )
    }).pipe(
      withProcessEnv({
        ...noAmbientAWS,
@@ -378,7 +378,11 @@ describe("Google Vertex providers", () => {

  test("rejects tuned Gemini models in express mode", () => {
    expect(() => GoogleVertex.configure({ apiKey: "fixture" }).model("endpoints/1234567890")).toThrow(
-      "Google Vertex tuned models do not support Express Mode API keys",
+      expect.objectContaining({
+        _tag: "ProviderConfiguration",
+        provider: "google-vertex",
+        message: "Google Vertex tuned models do not support Express Mode API keys",
+      }),
    )
  })
 })
@@ -0,0 +1,78 @@
+import { expect } from "bun:test"
+import { Effect, Schema } from "effect"
+import { LLM, LLMClient } from "../../src/index.js"
+import { OpenResponses } from "../../src/protocols/open-responses.js"
+import { Meta } from "../../src/providers/index.js"
+import { configure } from "../../src/providers/openai-compatible-responses.js"
+import { it } from "../lib/effect.js"
+import { fixedResponse } from "../lib/http.js"
+import { sseEvents } from "../lib/sse.js"
+
+const decodeEvent = Schema.decodeUnknownEffect(OpenResponses.protocol.stream.event)
+
+it.effect("normalizes flat errors in shared SSE and WebSocket decoding", () =>
+  Effect.gen(function* () {
+    const frame = {
+      type: "error",
+      sequence_number: 4,
+      code: "server_shutting_down",
+      message: "Server is shutting down. Please retry your request.",
+      param: null,
+    }
+    for (const decode of [decodeEvent, OpenResponses.decodeChannelEvent]) {
+      const event = yield* decode(JSON.stringify(frame))
+      expect(event).toEqual({
+        type: "error",
+        sequence_number: 4,
+        error: { code: frame.code, message: frame.message, param: null },
+      })
+
+      for (const unchanged of [
+        event,
+        { type: "error" },
+        {
+          type: "response.failed",
+          response: { id: "resp_failed", error: { code: "server_error", message: "Internal server error" } },
+        },
+        { type: "response.output_text.delta", item_id: "msg_text", delta: "Hello" },
+      ]) {
+        expect(yield* decode(JSON.stringify(unchanged))).toEqual(unchanged)
+      }
+    }
+  }),
+)
+
+it.effect("continues to normalize untyped xAI WebSocket errors", () =>
+  Effect.gen(function* () {
+    const frame = { error: { type: "api_error", message: "gRPC error: Response with id=resp_missing not found" } }
+    expect(yield* OpenResponses.decodeChannelEvent(JSON.stringify(frame))).toEqual({ ...frame, type: "error" })
+  }),
+)
+
+it.effect("retains classification and original error bodies through Meta and generic Responses routes", () =>
+  Effect.gen(function* () {
+    const raw = `{
+  "type": "error",
+  "sequence_number": 4,
+  "code": "server_shutting_down",
+  "message": "Server is shutting down. Please retry your request.",
+  "param": null,
+  "diagnostic": "retain-original-frame"
+}`
+    for (const model of [
+      Meta.configure({ apiKey: "fixture" }).responses("muse-spark-1.3"),
+      configure({ apiKey: "fixture", provider: "gateway", baseURL: "https://responses.example.test/v1" }).model(
+        "example-model",
+      ),
+    ]) {
+      const error = yield* LLMClient.generate(LLM.request({ model, prompt: "Hello" })).pipe(
+        Effect.provide(fixedResponse(sseEvents(raw.replaceAll("\n", "\ndata: ")))),
+        Effect.flip,
+      )
+      expect(error.reason._tag).toBe("ProviderInternal")
+      expect(error.message).toBe("server_shutting_down: Server is shutting down. Please retry your request.")
+      expect(error.reason.body).toBe(raw)
+      expect(error.reason.http?.status).toBe(200)
+    }
+  }),
+)
@@ -90,7 +90,11 @@ const classifyingChannelDriver = (message: string): WebSocketChannelDriver => {
  }
 }

-const continuationDriver = (request: Readonly<Record<string, unknown>>, base = baseChannelDriver) => {
+const continuationDriver = (
+  request: Readonly<Record<string, unknown>>,
+  base = baseChannelDriver,
+  continuation?: OpenResponsesContinuation.Shape,
+) => {
  const message = ProviderShared.encodeJson(request)
  return OpenResponsesContinuation.driver({
    id: "openai-responses",
@@ -98,6 +102,7 @@ const continuationDriver = (request: Readonly<Record<string, unknown>>, base = b
    request,
    message,
    base: base(message),
+    continuation,
  })
 }

@@ -921,6 +926,58 @@ describe("OpenAI Responses route", () => {
        type: "provider-failure",
        error: { reason: { _tag: "InvalidRequest", classification: "context-overflow" } },
      })
+
+      // A retryable failure stays one: the runner retries it, and the transport has already dropped the
+      // checkpoint, so that retry is a full send. xAI reports every rejection this way.
+      const internal = ProviderShared.encodeJson({
+        type: "error",
+        error: { type: "api_error", message: "gRPC error: Response with id=resp_1 not found" },
+      })
+      expect(yield* second.observe(yield* second.create(saved), internal)).toMatchObject({
+        type: "provider-failure",
+        error: { reason: { _tag: "ProviderInternal" } },
+      })
+    }),
+  )
+
+  it.effect("shapes the incremental send with the route continuation", () =>
+    Effect.gen(function* () {
+      const firstRequest = {
+        type: "response.create",
+        model: "grok-4.6",
+        store: true,
+        instructions: "You are terse.",
+        input: [{ role: "user", content: [{ type: "input_text", text: "First" }] }],
+      }
+      const secondRequest = {
+        ...firstRequest,
+        input: [...firstRequest.input, { role: "user", content: [{ type: "input_text", text: "Second" }] }],
+      }
+      const saved = checkpoint(
+        yield* continuationDriver(firstRequest).observe(
+          yield* continuationDriver(firstRequest).create(undefined),
+          ProviderShared.encodeJson({ type: "response.completed", response: { id: "resp_1" } }),
+        ),
+      )
+
+      const trimmed = yield* continuationDriver(
+        secondRequest,
+        baseChannelDriver,
+        ({ instructions: _, ...rest }) => rest,
+      ).create(saved)
+      expect(trimmed.mode).toBe("incremental")
+      expect(JSON.parse(trimmed.message)).toEqual({
+        type: "response.create",
+        model: "grok-4.6",
+        store: true,
+        previous_response_id: "resp_1",
+        input: [{ role: "user", content: [{ type: "input_text", text: "Second" }] }],
+      })
+
+      // Declining the continuation sends the step in full and never sends a previous_response_id.
+      const declined = yield* continuationDriver(secondRequest, baseChannelDriver, () => undefined).create(saved)
+      expect(declined.mode).toBe("full")
+      expect(JSON.parse(declined.message)).toEqual(secondRequest)
    }),
  )

@@ -1,11 +1,18 @@
 import { describe, expect } from "bun:test"
-import { Effect } from "effect"
+import { Effect, Layer, Stream } from "effect"
 import { LLM, LLMEvent, Message } from "../../src/index.js"
 import { XAI } from "../../src/providers.js"
 import { OpenResponses } from "../../src/protocols/open-responses.js"
 import { OpenAIResponses } from "../../src/protocols/openai-responses.js"
+import * as ProviderShared from "../../src/protocols/shared.js"
 import { XAIResponses } from "../../src/protocols/xai-responses.js"
-import { LLMClient } from "../../src/route.js"
+import {
+  LLMClient,
+  RequestExecutor,
+  WebSocketTransport,
+  type ChannelCheckpoint,
+  type WebSocketChannelDriver,
+} from "../../src/route.js"
 import { compileRequest } from "../../src/route/client.js"
 import { it } from "../lib/effect.js"
 import { fixedResponse } from "../lib/http.js"
@@ -13,6 +20,35 @@ import { sseEvents } from "../lib/sse.js"

 const model = XAI.configure({ apiKey: "test", baseURL: "https://api.x.ai/v1" }).responses("grok-4.6")

+/** Runs a request through the WebSocket transport and hands back its channel driver; the HTTP fallback answers. */
+const channelDriver = (request: ReturnType<typeof LLM.request>) =>
+  Effect.gen(function* () {
+    let driver: WebSocketChannelDriver | undefined
+    yield* LLMClient.generate(request, {
+      webSocket: {
+        execute: (exchange) =>
+          Effect.sync(() => {
+            driver = exchange.driver
+            return { frames: exchange.fallback(), complete: Effect.void }
+          }),
+      },
+    }).pipe(Effect.provide(fixedResponse(sseEvents({ type: "response.completed", response: { id: "http" } }))))
+    if (!driver) throw new Error("Expected a WebSocket channel driver")
+    return driver
+  })
+
+const completed = (driver: WebSocketChannelDriver, id: string) =>
+  Effect.gen(function* () {
+    const create = yield* driver.create(undefined)
+    yield* driver.observe(create, ProviderShared.encodeJson({ type: "response.created", response: { id } }))
+    const observation = yield* driver.observe(
+      create,
+      ProviderShared.encodeJson({ type: "response.completed", response: { id } }),
+    )
+    if (observation.type !== "completed" || !observation.checkpoint) throw new Error("Expected a checkpoint")
+    return observation.checkpoint
+  })
+
 describe("xAI Responses route", () => {
  it.effect("composes the Open Responses baseline with xAI extensions", () =>
    Effect.gen(function* () {
@@ -162,6 +198,78 @@ describe("xAI Responses route", () => {
    }),
  )

+  it.effect("classifies xAI's untyped WebSocket error envelope", () =>
+    Effect.gen(function* () {
+      // xAI answers a rejected response.create with an error envelope that carries no event type.
+      const envelope = ProviderShared.encodeJson({
+        error: {
+          message:
+            'Request validation error: {"code":"400","error":"Argument not supported: instructions and previous_response_id together"}',
+          type: "api_error",
+        },
+      })
+      const webSocket = WebSocketTransport.makeDirect({
+        open: () =>
+          Effect.succeed({ sendText: () => Effect.void, messages: Stream.make(envelope), close: Effect.void }),
+      })
+      const error = yield* LLMClient.generate(LLM.request({ model, prompt: "Hello" }), { webSocket }).pipe(
+        Effect.provide(
+          LLMClient.layer.pipe(
+            Layer.provide(
+              Layer.succeed(
+                RequestExecutor.Service,
+                RequestExecutor.Service.of({ execute: () => Effect.die("unexpected HTTP request") }),
+              ),
+            ),
+          ),
+        ),
+        Effect.flip,
+      )
+
+      expect(error.reason._tag).toBe("ProviderInternal")
+      expect(error.message).toContain("Argument not supported: instructions and previous_response_id together")
+      expect(error.reason.body).toBe(envelope)
+    }),
+  )
+
+  it.effect("continues stored responses without instructions and sends unstored steps in full", () =>
+    Effect.gen(function* () {
+      const step = (store: boolean, ...prompts: string[]) =>
+        LLM.request({
+          model,
+          system: "You are terse.",
+          messages: prompts.map((prompt) => Message.user(prompt)),
+          providerOptions: { store },
+        })
+      const send = (store: boolean, checkpoint: ChannelCheckpoint) =>
+        channelDriver(step(store, "First", "Second")).pipe(Effect.flatMap((driver) => driver.create(checkpoint)))
+
+      const stored = yield* send(true, yield* completed(yield* channelDriver(step(true, "First")), "resp_1"))
+      expect(stored.mode).toBe("incremental")
+      expect(JSON.parse(stored.message)).toEqual({
+        type: "response.create",
+        model: "grok-4.6",
+        store: true,
+        include: ["reasoning.encrypted_content"],
+        previous_response_id: "resp_1",
+        input: [{ role: "user", content: [{ type: "input_text", text: "Second" }] }],
+      })
+
+      // The connection cache only serves stored responses, so the default store: false never chains.
+      const unstored = yield* send(false, yield* completed(yield* channelDriver(step(false, "First")), "resp_1"))
+      expect(unstored.mode).toBe("full")
+      expect(JSON.parse(unstored.message)).toMatchObject({
+        instructions: "You are terse.",
+        store: false,
+        input: [
+          { role: "user", content: [{ type: "input_text", text: "First" }] },
+          { role: "user", content: [{ type: "input_text", text: "Second" }] },
+        ],
+      })
+      expect(JSON.parse(unstored.message).previous_response_id).toBeUndefined()
+    }),
+  )
+
  it.effect("parses xAI hosted tool items", () =>
    Effect.gen(function* () {
      const item = { type: "x_search_call", id: "x_search_1", status: "completed", action: { query: "news" } }
@@ -19,11 +19,13 @@ story("cancelling a version mismatch permits reconnecting again", async ({ mount
  const component = await mount("app-dialog-ssh--incompatible-session")
  await component.getByRole("button", { name: "Reconnect", exact: true }).click()
  const dialog = page.getByRole("dialog")
-  await expect(dialog.getByRole("alert")).toBeVisible()
+  await expect(dialog.getByRole("status")).toContainText("Server update required")
+  await expect(dialog.getByRole("textbox")).toHaveCount(0)
  await dialog.getByRole("button", { name: "Cancel", exact: true }).click()
  await expect(dialog).toHaveCount(0)
  await component.getByRole("button", { name: "Reconnect", exact: true }).click()
-  await expect(dialog.getByRole("alert")).toBeVisible()
+  await expect(dialog.getByRole("status")).toContainText("Server update required")
+  await expect(dialog.getByRole("textbox")).toHaveCount(0)
  await dialog.getByRole("button", { name: "Cancel", exact: true }).click()
  await expect(dialog).toHaveCount(0)
 })
@@ -43,6 +45,17 @@ story("adding a server keeps all SSH challenges in the original connection dialo
  await expect(dialog).toHaveCount(0)
 })

+story("adding an incompatible server advances to a dedicated update step", async ({ mount, page }) => {
+  await mount("app-dialog-ssh--incompatible-host")
+  const dialog = page.getByRole("dialog")
+  await dialog.getByRole("textbox", { name: "Host or SSH command" }).fill("ssh devbox")
+  await dialog.getByRole("button", { name: "Add server", exact: true }).click()
+  await expect(dialog.getByRole("status")).toContainText("Server update required")
+  await expect(dialog.getByRole("textbox")).toHaveCount(0)
+  await expect(dialog.getByRole("alert")).toHaveCount(0)
+  await expect(dialog.getByRole("button", { name: "Update and reconnect", exact: true })).toBeVisible()
+})
+
 story("updating an incompatible connection continues authentication in the same dialog", async ({ mount, page }) => {
  const component = await mount("app-dialog-ssh--incompatible-session")
  await component.getByRole("button", { name: "Reconnect", exact: true }).click()
@@ -115,7 +115,7 @@ test("combines follow-up patches into one three-file stack inside Used", async (
  })
  const group = page.locator('[data-component="collapsed-tool-group"]')
  await group.getByRole("button", { name: "Used 2 Shell, Patch", exact: true }).click()
-  await expect(group.getByText("2 files", { exact: true })).toBeVisible()
+  await expect(group.locator('[data-slot="apply-patch-filename"]')).toHaveText(["a.ts", "b.ts"])
  await timeline.send(
    partUpdated(
      toolPart(
@@ -134,7 +134,6 @@ test("combines follow-up patches into one three-file stack inside Used", async (
    "true",
  )
  await expect(group.locator('[data-component="apply-patch-tool"]')).toHaveCount(1)
-  await expect(group.getByText("3 files", { exact: true })).toBeVisible()
  await expect(group.locator('[data-slot="apply-patch-filename"]')).toHaveText(["a.ts", "b.ts", "c.ts"])
 })

@@ -126,15 +126,9 @@ export function createComposerSubmit(input: ComposerSubmitInput) {

      if (command) {
        clearSubmission(input, submission)
-        // Commands always steer: the server applies a command's configured
-        // agent and model immediately at admission, so queueing one would
-        // reconfigure the turn it is supposed to wait behind.
-        void sendCommand(
-          session,
-          { ...value, delivery: "steer" },
-          command,
-          input.adapter.controls().model.selection.trackSessionCommit,
-        ).catch((error) => failSubmission(input, session, "command", error, restore, value.id))
+        void sendCommand(session, value, command, input.adapter.controls().model.selection.trackSessionCommit).catch(
+          (error) => failSubmission(input, session, "command", error, restore, value.id),
+        )
        return
      }
    } finally {
@@ -326,7 +320,8 @@ async function sendCommand(
  track?: ModelSelection["trackSessionCommit"],
 ) {
  const request = await buildSubmissionRequest(session, value)
-  await applySelection(session, value.selection, track)
+  // Like queued prompts, queued commands must not apply the composer's selection to active work.
+  if (value.delivery === "steer") await applySelection(session, value.selection, track)
  await session.api.command({
    sessionID: session.id,
    command: command.command,
@@ -54,8 +54,12 @@ export function createWebPlatform(version: string) {

 function getCurrentServerUrl() {
  if (import.meta.env.VITE_OPENCODE_SERVER_MODE === "none") return undefined
-  if (import.meta.env.DEV)
-    return `http://${import.meta.env.VITE_OPENCODE_SERVER_HOST ?? "localhost"}:${import.meta.env.VITE_OPENCODE_SERVER_PORT ?? "4096"}`
+  if (import.meta.env.DEV) {
+    const loopback =
+      location.hostname === "localhost" || location.hostname === "[::1]" || location.hostname.startsWith("127.")
+    const host = import.meta.env.VITE_OPENCODE_SERVER_HOST ?? (loopback ? location.hostname : "localhost")
+    return `http://${host}:${import.meta.env.VITE_OPENCODE_SERVER_PORT ?? "4096"}`
+  }
  return location.origin
 }

@@ -10,6 +10,7 @@ import { createData } from "@opencode/client/solid"
 import type { ServerScope } from "@/runtime/server/scope"
 import { createPermissionAutoApprover } from "@/session/requests/auto-approve"
 import { createServerNotificationState } from "@/shell/notifications/notification"
+import { createNotificationCoordinator } from "@/shell/notifications/coordinator"
 import { Persist, persisted } from "@/runtime/persistence/storage"
 import { createDesktopData } from "./data"
 import { ModelState } from "./persistence"
@@ -33,6 +34,7 @@ export const { use: useGlobal, provider: GlobalProvider } = createSimpleContext(
      },
    })
    const models = createGlobalModels()
+    const notificationCoordinator = createNotificationCoordinator()

    const settingsServer = createMemo(() => {
      const list = server.list
@@ -57,7 +59,7 @@ export const { use: useGlobal, provider: GlobalProvider } = createSimpleContext(
      if (existing) return existing
      const serverCtx = createRoot((dispose) => {
        serverCtxDisposers.set(key, dispose)
-        return createServerController(conn, server.scope(key), server.projects.forServer(key))
+        return createServerController(conn, server.scope(key), server.projects.forServer(key), notificationCoordinator)
      }, owner)
      serverCtxs.set(key, serverCtx)
      return serverCtx
@@ -131,6 +133,7 @@ function createServerController(
  conn: ServerConnection.Any,
  scope: ServerScope,
  projects: ReturnType<typeof createServerProjects>,
+  notificationCoordinator: ReturnType<typeof createNotificationCoordinator>,
 ) {
  const language = useLanguage()
  const settings = useSettings()
@@ -159,7 +162,7 @@ function createServerController(
  })
  const sync = createServerSyncContext(sdk, data)
  createPermissionAutoApprover({ sdk, data })
-  const notification = createServerNotificationState({ sdk, data, key: connKey })
+  const notification = createServerNotificationState({ sdk, data, key: connKey, coordinator: notificationCoordinator })

  function enrich(project: { worktree: string; expanded: boolean }) {
    const [childStore] = sync.child(project.worktree, { bootstrap: false })
@@ -278,6 +278,7 @@ function Open(props: { initial?: string }) {
 export default { title: "App/Dialogs/SSH", id: "app-dialog-ssh" }
 export const AuthenticationRequired = { render: () => <Fixture initial="required" /> }
 export const SettingsReconnect = { render: () => <Fixture initial="required" settings connectionDelay={200} /> }
+export const IncompatibleHost = { render: () => <Fixture incompatible /> }
 export const IncompatibleSession = { render: () => <Fixture initial="required" session incompatible /> }
 export const InactiveSession = { render: () => <Fixture initial="required" session connectionDelay={3000} /> }
 export const KeyReconnect = { render: () => <Fixture initial="required" session keyOnly connectionDelay={3000} /> }
@@ -120,7 +120,13 @@ export function DialogSsh(props: {
      <Divider />
      <DialogBody class="flex w-full min-w-0 flex-1 flex-col px-4 pt-4 pb-2">
        <div class="flex w-full min-w-0 flex-col gap-6">
-          <Show when={!props.promptOnly && (!state.prompted || (!!error() && !prompt()))}>
+          <Show
+            when={
+              !props.promptOnly &&
+              item()?.stage !== "incompatible" &&
+              (!state.prompted || (!!error() && !prompt()))
+            }
+          >
            <div class="flex w-full min-w-0 flex-col gap-2">
              <label class="settings-server-dialog-label" for="ssh-target">
                {language.t("ssh.target")}
@@ -160,6 +166,12 @@ export function DialogSsh(props: {
              />
            </div>
          </Show>
+          <Show when={item()?.stage === "incompatible"}>
+            <div class="flex w-full min-w-0 flex-col gap-2" role="status" aria-live="polite">
+              <span class="text-14-medium text-v2-text-text-base">{language.t("ssh.stage.incompatible")}</span>
+              <span class="text-13-regular text-v2-text-text-muted">{language.t("ssh.error.version")}</span>
+            </div>
+          </Show>
          <Show when={prompt()} keyed>
            {(prompt) => (
              <div class="flex w-full min-w-0 flex-col gap-2">
@@ -195,7 +207,7 @@ export function DialogSsh(props: {
              </div>
            )}
          </Show>
-          <Show when={error()}>
+          <Show when={item()?.stage !== "incompatible" && error()}>
            {(error) => (
              <span class="settings-server-dialog-error !leading-[var(--line-height-compact)]" role="alert">
                {error()}
@@ -1,6 +1,6 @@
 import { createMemo, createUniqueId, Show } from "solid-js"
 import { createStore } from "solid-js/store"
-import { createQuery } from "@tanstack/solid-query"
+import { createQuery, keepPreviousData } from "@tanstack/solid-query"
 import { Icon } from "@opencode/ui/icon"
 import { SessionFilePanelV2, SessionFilePanelV2Empty } from "@opencode/session-ui/v2/session-file-panel-v2"
 import { SessionReviewV2Sidebar } from "@opencode/session-ui/v2/session-review-v2"
@@ -56,6 +56,7 @@ export function SessionFileBrowserTab(props: {
      queryKey: [serverSDK.scope, "session-open-file", workspaceKey(), value] as const,
      enabled: serverSDK.connection.status() === "connected" && value.length > 0,
      queryFn: ({ signal }) => file.searchFiles(value, { limit: 200, signal }),
+      placeholderData: keepPreviousData,
    }
  })
  const files = createMemo(() => {
@@ -0,0 +1,93 @@
+import { onCleanup } from "solid-js"
+
+const FOCUS_LOCK = "opencode:notification-focus"
+const MAX_CLAIMED = 500
+
+export function createNotificationCoordinator() {
+  const locks = typeof navigator === "undefined" ? undefined : navigator.locks
+  const claimed = new Set<string>()
+  const focus = { pending: false, release: undefined as (() => void) | undefined }
+
+  const updateFocus = () => {
+    if (typeof document === "undefined" || !document.hasFocus()) {
+      focus.release?.()
+      return
+    }
+    if (!locks || focus.pending || focus.release) return
+
+    focus.pending = true
+    void locks
+      .request(FOCUS_LOCK, { mode: "shared" }, async () => {
+        focus.pending = false
+        if (!document.hasFocus()) return
+        await new Promise<void>((resolve) => {
+          focus.release = resolve
+        })
+        focus.release = undefined
+      })
+      .catch(() => {
+        focus.pending = false
+      })
+  }
+
+  if (typeof window !== "undefined") {
+    window.addEventListener("focus", updateFocus)
+    window.addEventListener("blur", updateFocus)
+    document.addEventListener("visibilitychange", updateFocus)
+    updateFocus()
+    onCleanup(() => {
+      window.removeEventListener("focus", updateFocus)
+      window.removeEventListener("blur", updateFocus)
+      document.removeEventListener("visibilitychange", updateFocus)
+      focus.release?.()
+    })
+  }
+
+  const once = async (kind: "sound" | "system", eventID: string, run: () => Promise<unknown> | void) => {
+    const key = `${kind}:${eventID}`
+    const execute = async () => {
+      if (!claim(kind, key, claimed)) return
+      await run()
+    }
+    if (!locks) return execute()
+    await locks.request(`opencode:notification:${key}`, execute)
+  }
+
+  return {
+    sound(eventID: string, run: () => Promise<unknown> | void) {
+      return once("sound", eventID, run)
+    },
+    system(eventID: string, run: () => Promise<unknown> | void) {
+      return once("system", eventID, async () => {
+        if (typeof document !== "undefined" && document.hasFocus()) return
+        if (!locks) return run()
+        await locks.request(FOCUS_LOCK, { mode: "exclusive", ifAvailable: true }, async (lock) => {
+          if (!lock) return
+          await run()
+        })
+      })
+    },
+  }
+}
+
+function claim(kind: "sound" | "system", eventID: string, claimed: Set<string>) {
+  if (claimed.has(eventID)) return false
+
+  if (typeof localStorage !== "undefined") {
+    try {
+      const storageKey = `opencode:notification-${kind}`
+      const value: unknown = JSON.parse(localStorage.getItem(storageKey) ?? "[]")
+      const events = Array.isArray(value) ? value.filter((item): item is string => typeof item === "string") : []
+      if (events.includes(eventID)) {
+        claimed.add(eventID)
+        return false
+      }
+      localStorage.setItem(storageKey, JSON.stringify([...events, eventID].slice(-MAX_CLAIMED)))
+    } catch {
+      // The in-memory claim still prevents duplicates in this renderer when storage is unavailable.
+    }
+  }
+
+  claimed.add(eventID)
+  return true
+}
@@ -11,7 +11,8 @@ import { useSettings } from "@/settings/model"
 import { decode64 } from "@/runtime/persistence/base64"
 import { Persist, persisted } from "@/runtime/persistence/storage"
 import { Persistence } from "@/runtime/persistence/schema"
-import { playSoundByIdOnce } from "@/shell/notifications/sound"
+import { playSoundById } from "@/shell/notifications/sound"
+import type { createNotificationCoordinator } from "@/shell/notifications/coordinator"
 import { useGlobal } from "@/runtime/server/runtime"
 import { ServerConnection, useServers } from "@/runtime/server/registry"
 import { sessionIDHasOpenTab, useTabs } from "@/shell/tabs/tabs"
@@ -114,7 +115,12 @@ function buildNotificationIndex(list: Notification[]) {
  return index
 }

-export function createServerNotificationState(input: { sdk: ServerSDK; data: Data; key: ServerConnection.Key }) {
+export function createServerNotificationState(input: {
+  sdk: ServerSDK
+  data: Data
+  key: ServerConnection.Key
+  coordinator: ReturnType<typeof createNotificationCoordinator>
+}) {
  const platform = usePlatform()
  const settings = useSettings()
  const language = useLanguage()
@@ -223,7 +229,7 @@ export function createServerNotificationState(input: { sdk: ServerSDK; data: Dat
      if (session.parentID) return

      if (sessionIDHasOpenTab(tabs.store, input.key, sessionID) && settings.sounds.agentEnabled()) {
-        void playSoundByIdOnce(settings.sounds.agent(), `${input.key}\0${eventID}`)
+        void input.coordinator.sound(`${input.key}\0${eventID}`, () => playSoundById(settings.sounds.agent()))
      }

      append({
@@ -235,8 +241,10 @@ export function createServerNotificationState(input: { sdk: ServerSDK; data: Dat
      })

      if (settings.notifications.agent()) {
-        void platform.notify(language.t("notification.session.responseReady.title"), session.title ?? sessionID, () =>
-          openNotificationSession(tabs, input.key, sessionID),
+        void input.coordinator.system(`${input.key}\0${eventID}`, () =>
+          platform.notify(language.t("notification.session.responseReady.title"), session.title ?? sessionID, () =>
+            openNotificationSession(tabs, input.key, sessionID),
+          ),
        )
      }
    })
@@ -248,7 +256,7 @@ export function createServerNotificationState(input: { sdk: ServerSDK; data: Dat
      if (session?.parentID) return

      if (sessionIDHasOpenTab(tabs.store, input.key, sessionID) && settings.sounds.errorsEnabled()) {
-        void playSoundByIdOnce(settings.sounds.errors(), `${input.key}\0${eventID}`)
+        void input.coordinator.sound(`${input.key}\0${eventID}`, () => playSoundById(settings.sounds.errors()))
      }

      append({
@@ -263,8 +271,10 @@ export function createServerNotificationState(input: { sdk: ServerSDK; data: Dat
        session?.title ??
        (typeof error === "string" ? error : language.t("notification.session.error.fallbackDescription"))
      if (settings.notifications.errors()) {
-        void platform.notify(language.t("notification.session.error.title"), description, () =>
-          openNotificationSession(tabs, input.key, sessionID),
+        void input.coordinator.system(`${input.key}\0${eventID}`, () =>
+          platform.notify(language.t("notification.session.error.title"), description, () =>
+            openNotificationSession(tabs, input.key, sessionID),
+          ),
        )
      }
    })
@@ -74,9 +74,6 @@ function getLoads() {
 }

 const cache = new Map<SoundID, Promise<string | undefined>>()
-const claimed = new Set<string>()
-const CLAIMED_STORAGE_KEY = "opencode:notification-sounds"
-const MAX_CLAIMED = 500

 export function soundSrc(id: string | undefined) {
  const loads = getLoads()
@@ -103,34 +100,3 @@ export function playSound(src: string | undefined) {
 export function playSoundById(id: string | undefined) {
  return soundSrc(id).then((src) => playSound(src))
 }
-
-export async function playSoundByIdOnce(id: string | undefined, eventID: string) {
-  const play = async () => {
-    if (!claim(eventID)) return
-    await playSoundById(id)
-  }
-
-  if (typeof navigator === "undefined" || !navigator.locks) return play()
-  await navigator.locks.request(`${CLAIMED_STORAGE_KEY}:${eventID}`, play)
-}
-
-function claim(eventID: string) {
-  if (claimed.has(eventID)) return false
-
-  if (typeof localStorage !== "undefined") {
-    try {
-      const value: unknown = JSON.parse(localStorage.getItem(CLAIMED_STORAGE_KEY) ?? "[]")
-      const events = Array.isArray(value) ? value.filter((item): item is string => typeof item === "string") : []
-      if (events.includes(eventID)) {
-        claimed.add(eventID)
-        return false
-      }
-      localStorage.setItem(CLAIMED_STORAGE_KEY, JSON.stringify([...events, eventID].slice(-MAX_CLAIMED)))
-    } catch {
-      // The in-memory claim still prevents duplicates in this renderer when storage is unavailable.
-    }
-  }
-
-  claimed.add(eventID)
-  return true
-}
@@ -47,7 +47,7 @@ const handler = Effect.fn("cli.session.list")(function* (
          null,
          2,
        )
-      : formatTable(page.data)) + EOL
+      : formatList(page.data)) + EOL
  const write = Effect.tryPromise(
    () =>
      new Promise<void>((resolve, reject) => {
@@ -96,18 +96,14 @@ export default Runtime.handler(Commands.commands.session.commands.list, (input)
  ),
 )

-function formatTable(sessions: ReadonlyArray<SessionInfo>) {
-  const rows = sessions.map((session) => ({
-    id: session.id,
-    title: (session.title ?? "Untitled session").replace(/[\r\n\t]/g, " "),
-    updated: new Date(session.time.updated).toLocaleString(),
-  }))
-  const idWidth = Math.max(20, ...rows.map((row) => row.id.length))
-  const titleWidth = Math.max(25, ...rows.map((row) => row.title.length))
-  const header = `${"Session ID".padEnd(idWidth)}  ${"Title".padEnd(titleWidth)}  Updated`
-  return [
-    header,
-    "─".repeat(header.length),
-    ...rows.map((row) => `${row.id.padEnd(idWidth)}  ${row.title.padEnd(titleWidth)}  ${row.updated}`),
-  ].join(EOL)
+function formatList(sessions: ReadonlyArray<SessionInfo>) {
+  return sessions
+    .map((session) =>
+      [
+        session.id,
+        (session.title ?? "Untitled session").replace(/[\r\n\t]/g, " "),
+        new Date(session.time.updated).toLocaleString(),
+      ].join("\t"),
+    )
+    .join(EOL)
 }
@@ -11,13 +11,13 @@ import type { RelativePath } from "@opencode/schema/schema"
 import type { Brand } from "effect"
 import type { Model } from "@opencode/schema/model"
 import type { DateTime } from "effect"
+import type { Permission } from "@opencode/schema/permission"
 import type { SessionMessage } from "@opencode/schema/session-message"
 import type { SessionInbox } from "@opencode/schema/session-inbox"
 import type { PromptInput } from "@opencode/schema/prompt-input"
 import type { AgentAttachment } from "@opencode/schema/prompt"
 import type { Skill } from "@opencode/schema/skill"
 import type { Event } from "@opencode/schema/event"
-import type { FileDiff } from "@opencode/schema/file-diff"
 import type { InstructionEntry } from "@opencode/schema/instruction-entry"
 import type { Schema } from "effect"
 import type { EventLog } from "@opencode/schema/event-log"
@@ -27,7 +27,6 @@ import type { Integration } from "@opencode/schema/integration"
 import type { Form } from "@opencode/schema/form"
 import type { Mcp } from "@opencode/schema/mcp"
 import type { Credential } from "@opencode/schema/credential"
-import type { Permission } from "@opencode/schema/permission"
 import type { PermissionSaved } from "@opencode/schema/permission-saved"
 import type { FileSystem } from "@opencode/schema/filesystem"
 import type { Command } from "@opencode/schema/command"
@@ -37,6 +36,7 @@ import type { PtyTicket } from "@opencode/schema/pty-ticket"
 import type { Reference } from "@opencode/schema/reference"
 import type { Worktree } from "@opencode/schema/worktree"
 import type { Vcs } from "@opencode/schema/vcs"
+import type { FileDiff } from "@opencode/schema/file-diff"
 import type { WebSearch } from "@opencode/schema/websearch"
 import type { Config } from "@opencode/schema/config"

@@ -209,6 +209,7 @@ export type SessionCreateInput = {
  readonly model?: Model.Ref | undefined
  readonly location?: Location.Ref | undefined
  readonly metadata?: Session.Metadata | undefined
+  readonly permissions?: Permission.Ruleset | undefined
 }
 export type SessionCreateOutput = Session.Info
 export type SessionCreateOperation<E = never> = (input?: SessionCreateInput) => Effect.Effect<SessionCreateOutput, E>
@@ -360,15 +361,6 @@ export type SessionContextInput = { readonly sessionID: Session.ID }
 export type SessionContextOutput = ReadonlyArray<SessionMessage.Info>
 export type SessionContextOperation<E = never> = (input: SessionContextInput) => Effect.Effect<SessionContextOutput, E>

-export type SessionDiffInput = {
-  readonly sessionID: Session.ID
-  readonly messageID?: SessionMessage.ID | undefined
-  readonly to?: SessionMessage.ID | undefined
-  readonly context?: number | undefined
-}
-export type SessionDiffOutput = ReadonlyArray<FileDiff.Info>
-export type SessionDiffOperation<E = never> = (input: SessionDiffInput) => Effect.Effect<SessionDiffOutput, E>
-
 export type SessionInboxListInput = { readonly sessionID: Session.ID }
 export type SessionInboxListOutput = ReadonlyArray<SessionInbox.Info>
 export type SessionInboxListOperation<E = never> = (
@@ -446,6 +438,7 @@ export type SessionLogOutput =
            readonly agent?: Agent.ID | undefined
            readonly model?: Model.Ref | undefined
            readonly metadata?: Session.Metadata | undefined
+            readonly permissions?: Permission.Ruleset | undefined
            readonly version: string
          }
        }
@@ -498,6 +491,15 @@ export type SessionLogOutput =
          readonly location?: Location.Ref | undefined
          readonly data: { readonly sessionID: Session.ID; readonly title: string }
        }
+      | {
+          readonly id: Event.ID
+          readonly created: number
+          readonly metadata?: { readonly [x: string]: unknown } | undefined
+          readonly type: "session.permissions.updated"
+          readonly durable: { readonly aggregateID: string; readonly seq: Event.Seq; readonly version: Event.Version }
+          readonly location?: Location.Ref | undefined
+          readonly data: { readonly sessionID: Session.ID; readonly permissions: Permission.Ruleset }
+        }
      | {
          readonly id: Event.ID
          readonly created: number
@@ -1148,7 +1150,6 @@ export interface SessionApi<E = never> {
    readonly commit: SessionRevertCommitOperation<E>
  }
  readonly context: SessionContextOperation<E>
-  readonly diff: SessionDiffOperation<E>
  readonly inbox: {
    readonly list: SessionInboxListOperation<E>
    readonly cancel: SessionInboxCancelOperation<E>
@@ -1595,6 +1596,12 @@ export type PermissionReplyOperation<E = never> = (
  input: PermissionReplyInput,
 ) => Effect.Effect<PermissionReplyOutput, E>

+export type PermissionRulesInput = { readonly sessionID: Session.ID; readonly permissions: Permission.Ruleset }
+export type PermissionRulesOutput = void
+export type PermissionRulesOperation<E = never> = (
+  input: PermissionRulesInput,
+) => Effect.Effect<PermissionRulesOutput, E>
+
 export interface PermissionApi<E = never> {
  readonly request: { readonly list: PermissionRequestListOperation<E> }
  readonly saved: { readonly list: PermissionSavedListOperation<E>; readonly remove: PermissionSavedRemoveOperation<E> }
@@ -1602,6 +1609,7 @@ export interface PermissionApi<E = never> {
  readonly list: PermissionListOperation<E>
  readonly get: PermissionGetOperation<E>
  readonly reply: PermissionReplyOperation<E>
+  readonly rules: PermissionRulesOperation<E>
 }

 export type FileListInput = {
@@ -68,8 +68,6 @@ import type {
  SessionRevertCommitOutput,
  SessionContextInput,
  SessionContextOutput,
-  SessionDiffInput,
-  SessionDiffOutput,
  SessionInboxListInput,
  SessionInboxListOutput,
  SessionInboxCancelInput,
@@ -183,6 +181,8 @@ import type {
  PermissionGetOutput,
  PermissionReplyInput,
  PermissionReplyOutput,
+  PermissionRulesInput,
+  PermissionRulesOutput,
  FileListInput,
  FileListOutput,
  FileFindInput,
@@ -397,6 +397,7 @@ const EndpointSessionCreate = (raw: RawClient["server.session"]) => (input?: Ses
        model: input?.["model"],
        location: input?.["location"],
        metadata: input?.["metadata"],
+        permissions: input?.["permissions"],
      },
    }).pipe(
      Effect.mapError(mapClientError),
@@ -594,17 +595,6 @@ const EndpointSessionContext = (raw: RawClient["server.session"]) => (input: Ses
    ),
  )

-const EndpointSessionDiff = (raw: RawClient["server.session"]) => (input: SessionDiffInput) =>
-  preserveEffect<SessionDiffOutput>()(
-    raw["session.diff"]({
-      params: { sessionID: input["sessionID"] },
-      query: { messageID: input["messageID"], to: input["to"], context: input["context"] },
-    }).pipe(
-      Effect.mapError(mapClientError),
-      Effect.map((value) => value.data),
-    ),
-  )
-
 const EndpointSessionInboxList = (raw: RawClient["server.session"]) => (input: SessionInboxListInput) =>
  preserveEffect<SessionInboxListOutput>()(
    raw["session.inbox.list"]({ params: { sessionID: input["sessionID"] } }).pipe(
@@ -744,7 +734,6 @@ const adaptGroupSession = (raw: RawClient["server.session"]) => ({
    commit: EndpointSessionRevertCommit(raw),
  },
  context: EndpointSessionContext(raw),
-  diff: EndpointSessionDiff(raw),
  inbox: {
    list: EndpointSessionInboxList(raw),
    cancel: EndpointSessionInboxCancel(raw),
@@ -1159,6 +1148,14 @@ const EndpointPermissionReply = (raw: RawClient["server.permission"]) => (input:
    }).pipe(Effect.mapError(mapClientError)),
  )

+const EndpointPermissionRules = (raw: RawClient["server.permission"]) => (input: PermissionRulesInput) =>
+  preserveEffect<PermissionRulesOutput>()(
+    raw["session.permission.rules"]({
+      params: { sessionID: input["sessionID"] },
+      payload: { permissions: input["permissions"] },
+    }).pipe(Effect.mapError(mapClientError)),
+  )
+
 const adaptGroupPermission = (raw: RawClient["server.permission"]) => ({
  request: { list: EndpointPermissionRequestList(raw) },
  saved: { list: EndpointPermissionSavedList(raw), remove: EndpointPermissionSavedRemove(raw) },
@@ -1166,6 +1163,7 @@ const adaptGroupPermission = (raw: RawClient["server.permission"]) => ({
  list: EndpointPermissionList(raw),
  get: EndpointPermissionGet(raw),
  reply: EndpointPermissionReply(raw),
+  rules: EndpointPermissionRules(raw),
 })

 const EndpointFileList = (raw: RawClient["server.fs"]) => (input?: FileListInput) =>
@@ -62,8 +62,6 @@ import type {
  SessionRevertCommitOutput,
  SessionContextInput,
  SessionContextOutput,
-  SessionDiffInput,
-  SessionDiffOutput,
  SessionInboxListInput,
  SessionInboxListOutput,
  SessionInboxCancelInput,
@@ -177,6 +175,8 @@ import type {
  PermissionGetOutput,
  PermissionReplyInput,
  PermissionReplyOutput,
+  PermissionRulesInput,
+  PermissionRulesOutput,
  FileReadInput,
  FileReadOutput,
  FileListInput,
@@ -567,6 +567,7 @@ export function make(options: ClientOptions) {
              model: input?.["model"],
              location: input?.["location"],
              metadata: input?.["metadata"],
+              permissions: input?.["permissions"],
            },
            successStatus: 200,
            declaredStatuses: [400, 401],
@@ -844,18 +845,6 @@ export function make(options: ClientOptions) {
          },
          requestOptions,
        ).then((value) => value.data),
-      diff: (input: SessionDiffInput, requestOptions?: RequestOptions) =>
-        request<{ readonly data: SessionDiffOutput }>(
-          {
-            method: "GET",
-            path: `/api/session/${encodeURIComponent(input.sessionID)}/diff`,
-            query: { messageID: input["messageID"], to: input["to"], context: input["context"] },
-            successStatus: 200,
-            declaredStatuses: [400, 401, 404, 500],
-            empty: false,
-          },
-          requestOptions,
-        ).then((value) => value.data),
      inbox: {
        list: (input: SessionInboxListInput, requestOptions?: RequestOptions) =>
          request<{ readonly data: SessionInboxListOutput }>(
@@ -1580,6 +1569,18 @@ export function make(options: ClientOptions) {
          },
          requestOptions,
        ),
+      rules: (input: PermissionRulesInput, requestOptions?: RequestOptions) =>
+        request<PermissionRulesOutput>(
+          {
+            method: "PUT",
+            path: `/api/session/${encodeURIComponent(input.sessionID)}/permission/rules`,
+            body: { permissions: input["permissions"] },
+            successStatus: 204,
+            declaredStatuses: [400, 401, 404],
+            empty: true,
+          },
+          requestOptions,
+        ),
    },
    file: {
      read: (input: FileReadInput, requestOptions?: RequestOptions) =>
@@ -147,14 +147,6 @@ export type SessionProviderContextProvenance = {
  endpoint: string
 }

-export type SessionMessageIdle = {
-  id: string
-  metadata?: { [x: string]: JsonValue }
-  time: { created: number }
-  type: "idle"
-  outcome: "succeeded" | "failed" | "interrupted"
-}
-
 export type SessionActive = { type: "running" }

 export type SessionInboxDelivery = "steer" | "queue"
@@ -559,28 +551,6 @@ export type InstructionEntryInfo = { key: InstructionEntryKey; value: JsonValue

 export type InstructionEntrySnapshot = Array<{ key: InstructionEntryKey; value: JsonValue; removed: boolean }>

-export type SessionCreated = {
-  id: string
-  created: number
-  metadata?: { [x: string]: any }
-  type: "session.created"
-  durable: { aggregateID: string; seq: number; version: 1 }
-  location?: LocationRef
-  data: {
-    sessionID: string
-    projectID: string
-    location: LocationRef
-    subpath?: string
-    parentID?: string
-    slug: string
-    title?: string
-    agent?: string
-    model?: ModelRef
-    metadata?: SessionMetadata
-    version: string
-  }
-}
-
 export type SessionAgentSelected = {
  id: string
  created: number
@@ -1659,24 +1629,6 @@ export type SessionInboxMove = {
  delivery: SessionInboxDelivery
 }

-export type SessionInfo = {
-  id: string
-  parentID?: string
-  fork?: { sessionID: string; boundary: SessionForkBoundary }
-  projectID: string
-  agent?: string
-  model?: ModelRef
-  cost: MoneyUSD
-  tokens: TokenUsageInfo
-  outcome?: "succeeded" | "failed" | "interrupted"
-  time: { created: number; updated: number; idle?: number; viewed?: number; archived?: number }
-  title?: string
-  location: LocationRef
-  subpath?: string
-  metadata?: SessionMetadata
-  revert?: SessionRevert
-}
-
 export type SessionRevertStaged = {
  id: string
  created: number
@@ -1920,6 +1872,58 @@ export type AgentInfo = {
  permissions: PermissionRuleset
 }

+export type SessionPermissionsUpdated = {
+  id: string
+  created: number
+  metadata?: { [x: string]: any }
+  type: "session.permissions.updated"
+  durable: { aggregateID: string; seq: number; version: 1 }
+  location?: LocationRef
+  data: { sessionID: string; permissions: PermissionRuleset }
+}
+
+export type SessionInfo = {
+  id: string
+  parentID?: string
+  fork?: { sessionID: string; boundary: SessionForkBoundary }
+  projectID: string
+  agent?: string
+  model?: ModelRef
+  cost: MoneyUSD
+  tokens: TokenUsageInfo
+  outcome?: "succeeded" | "failed" | "interrupted"
+  time: { created: number; updated: number; idle?: number; viewed?: number; archived?: number }
+  title?: string
+  location: LocationRef
+  subpath?: string
+  metadata?: SessionMetadata
+  permissions?: PermissionRuleset
+  revert?: SessionRevert
+}
+
+export type SessionCreated = {
+  id: string
+  created: number
+  metadata?: { [x: string]: any }
+  type: "session.created"
+  durable: { aggregateID: string; seq: number; version: 1 }
+  location?: LocationRef
+  data: {
+    sessionID: string
+    projectID: string
+    location: LocationRef
+    subpath?: string
+    parentID?: string
+    slug: string
+    title?: string
+    agent?: string
+    model?: ModelRef
+    metadata?: SessionMetadata
+    permissions?: PermissionRuleset
+    version: string
+  }
+}
+
 export type ConfigEntry =
  | {
      type: "document"
@@ -2092,8 +2096,6 @@ export type ConfigEntry =
  | { type: "agents"; path: string }
  | { type: "claude"; path: string }

-export type SessionsResponse = { data: Array<SessionInfo>; cursor: { previous?: string | null; next?: string | null } }
-
 export type SessionInboxUser = {
  id: string
  sessionID: string
@@ -2148,6 +2150,8 @@ export type FormFields = [FormField, ...Array<FormField>]

 export type FormFields2 = [FormField1, ...Array<FormField1>]

+export type SessionsResponse = { data: Array<SessionInfo>; cursor: { previous?: string | null; next?: string | null } }
+
 export type SessionInboxInfo = SessionInboxUser | SessionInboxSynthetic | SessionInboxCompaction | SessionInboxMove

 export type SessionInboxEnqueued = {
@@ -2202,7 +2206,6 @@ export type SessionMessageInfo =
  | SessionMessageShell
  | SessionMessageAssistant
  | SessionMessageCompaction
-  | SessionMessageIdle

 export type SessionMessageContentUpdated = {
  id: string
@@ -2242,6 +2245,7 @@ export type SessionEventDurable =
  | SessionModelSelected
  | SessionMoved
  | SessionRenamed
+  | SessionPermissionsUpdated
  | SessionViewed
  | SessionDeleted
  | SessionForked
@@ -2301,6 +2305,7 @@ export type V2Event =
  | SessionModelSelected
  | SessionMoved
  | SessionRenamed
+  | SessionPermissionsUpdated
  | SessionViewed
  | SessionUsageUpdated
  | SessionDeleted
@@ -2813,6 +2818,11 @@ export type SessionCreateInput = {
    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
    readonly metadata?: { readonly [x: string]: JsonValue } | null
+    readonly permissions?: ReadonlyArray<{
+      readonly action: string
+      readonly resource: string
+      readonly effect: "allow" | "deny" | "ask"
+    }> | null
  }["id"]
  readonly title?: {
    readonly id?: string | null
@@ -2821,6 +2831,11 @@ export type SessionCreateInput = {
    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
    readonly metadata?: { readonly [x: string]: JsonValue } | null
+    readonly permissions?: ReadonlyArray<{
+      readonly action: string
+      readonly resource: string
+      readonly effect: "allow" | "deny" | "ask"
+    }> | null
  }["title"]
  readonly agent?: {
    readonly id?: string | null
@@ -2829,6 +2844,11 @@ export type SessionCreateInput = {
    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
    readonly metadata?: { readonly [x: string]: JsonValue } | null
+    readonly permissions?: ReadonlyArray<{
+      readonly action: string
+      readonly resource: string
+      readonly effect: "allow" | "deny" | "ask"
+    }> | null
  }["agent"]
  readonly model?: {
    readonly id?: string | null
@@ -2837,6 +2857,11 @@ export type SessionCreateInput = {
    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
    readonly metadata?: { readonly [x: string]: JsonValue } | null
+    readonly permissions?: ReadonlyArray<{
+      readonly action: string
+      readonly resource: string
+      readonly effect: "allow" | "deny" | "ask"
+    }> | null
  }["model"]
  readonly location?: {
    readonly id?: string | null
@@ -2845,6 +2870,11 @@ export type SessionCreateInput = {
    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
    readonly metadata?: { readonly [x: string]: JsonValue } | null
+    readonly permissions?: ReadonlyArray<{
+      readonly action: string
+      readonly resource: string
+      readonly effect: "allow" | "deny" | "ask"
+    }> | null
  }["location"]
  readonly metadata?: {
    readonly id?: string | null
@@ -2853,7 +2883,25 @@ export type SessionCreateInput = {
    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
    readonly metadata?: { readonly [x: string]: JsonValue } | null
+    readonly permissions?: ReadonlyArray<{
+      readonly action: string
+      readonly resource: string
+      readonly effect: "allow" | "deny" | "ask"
+    }> | null
  }["metadata"]
+  readonly permissions?: {
+    readonly id?: string | null
+    readonly title?: string | null
+    readonly agent?: string | null
+    readonly model?: { readonly id: string; readonly providerID: string; readonly variant?: string } | null
+    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
+    readonly metadata?: { readonly [x: string]: JsonValue } | null
+    readonly permissions?: ReadonlyArray<{
+      readonly action: string
+      readonly resource: string
+      readonly effect: "allow" | "deny" | "ask"
+    }> | null
+  }["permissions"]
 }

 export type SessionCreateOutput = { data: SessionInfo }["data"]
@@ -2891,6 +2939,11 @@ export type SessionImportInput = {
      readonly location: { readonly directory: string; readonly workspaceID?: string }
      readonly subpath?: string
      readonly metadata?: { readonly [x: string]: JsonValue }
+      readonly permissions?: ReadonlyArray<{
+        readonly action: string
+        readonly resource: string
+        readonly effect: "allow" | "deny" | "ask"
+      }>
      readonly revert?: {
        readonly messageID: string
        readonly partID?: string
@@ -3161,13 +3214,6 @@ export type SessionImportInput = {
              }
            }
        )
-      | {
-          readonly id: string
-          readonly metadata?: { readonly [x: string]: JsonValue }
-          readonly time: { readonly created: number }
-          readonly type: "idle"
-          readonly outcome: "succeeded" | "failed" | "interrupted"
-        }
    >
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
  }["info"]
@@ -3203,6 +3249,11 @@ export type SessionImportInput = {
      readonly location: { readonly directory: string; readonly workspaceID?: string }
      readonly subpath?: string
      readonly metadata?: { readonly [x: string]: JsonValue }
+      readonly permissions?: ReadonlyArray<{
+        readonly action: string
+        readonly resource: string
+        readonly effect: "allow" | "deny" | "ask"
+      }>
      readonly revert?: {
        readonly messageID: string
        readonly partID?: string
@@ -3473,13 +3524,6 @@ export type SessionImportInput = {
              }
            }
        )
-      | {
-          readonly id: string
-          readonly metadata?: { readonly [x: string]: JsonValue }
-          readonly time: { readonly created: number }
-          readonly type: "idle"
-          readonly outcome: "succeeded" | "failed" | "interrupted"
-        }
    >
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
  }["messages"]
@@ -3515,6 +3559,11 @@ export type SessionImportInput = {
      readonly location: { readonly directory: string; readonly workspaceID?: string }
      readonly subpath?: string
      readonly metadata?: { readonly [x: string]: JsonValue }
+      readonly permissions?: ReadonlyArray<{
+        readonly action: string
+        readonly resource: string
+        readonly effect: "allow" | "deny" | "ask"
+      }>
      readonly revert?: {
        readonly messageID: string
        readonly partID?: string
@@ -3785,13 +3834,6 @@ export type SessionImportInput = {
              }
            }
        )
-      | {
-          readonly id: string
-          readonly metadata?: { readonly [x: string]: JsonValue }
-          readonly time: { readonly created: number }
-          readonly type: "idle"
-          readonly outcome: "succeeded" | "failed" | "interrupted"
-        }
    >
    readonly location?: { readonly directory: string; readonly workspaceID?: string } | null
  }["location"]
@@ -4281,27 +4323,6 @@ export type SessionContextInput = { readonly sessionID: { readonly sessionID: st

 export type SessionContextOutput = { data: Array<SessionMessageInfo> }["data"]

-export type SessionDiffInput = {
-  readonly sessionID: { readonly sessionID: string }["sessionID"]
-  readonly messageID?: {
-    readonly messageID?: string | undefined
-    readonly to?: string | undefined
-    readonly context?: number | undefined
-  }["messageID"]
-  readonly to?: {
-    readonly messageID?: string | undefined
-    readonly to?: string | undefined
-    readonly context?: number | undefined
-  }["to"]
-  readonly context?: {
-    readonly messageID?: string | undefined
-    readonly to?: string | undefined
-    readonly context?: number | undefined
-  }["context"]
-}
-
-export type SessionDiffOutput = { data: Array<FileDiffInfo> }["data"]
-
 export type SessionInboxListInput = { readonly sessionID: { readonly sessionID: string }["sessionID"] }

 export type SessionInboxListOutput = { data: Array<SessionInboxInfo> }["data"]
@@ -5804,6 +5825,19 @@ export type PermissionReplyInput = {

 export type PermissionReplyOutput = void

+export type PermissionRulesInput = {
+  readonly sessionID: { readonly sessionID: string }["sessionID"]
+  readonly permissions: {
+    readonly permissions: ReadonlyArray<{
+      readonly action: string
+      readonly resource: string
+      readonly effect: "allow" | "deny" | "ask"
+    }>
+  }["permissions"]
+}
+
+export type PermissionRulesOutput = void
+
 export type FileReadInput = {
  readonly location?: {
    readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
@@ -695,6 +695,10 @@ export function createData(config: CreateDataInput) {
        })
        return
      }
+      case "session.permissions.updated":
+        if (store.session.info[event.data.sessionID])
+          setStore("session", "info", event.data.sessionID, "permissions", event.data.permissions)
+        return
      case "session.moved": {
        const current = store.session.info[event.data.sessionID]
        if (current) {
@@ -1024,18 +1028,6 @@ export function createData(config: CreateDataInput) {
          if (currentAssistant) currentAssistant.retry = undefined
        })
        if (event.type === "session.execution.interrupted" && event.data.reason === "shutdown") return
-        // Mirror the projected idle marker so turn boundaries match before the next message read.
-        message.insert(event.data.sessionID, {
-          id: messageIDFromEvent(event.id),
-          type: "idle",
-          outcome:
-            event.type === "session.execution.succeeded"
-              ? "succeeded"
-              : event.type === "session.execution.failed"
-                ? "failed"
-                : "interrupted",
-          time: { created: event.created },
-        })
        // An event can overtake the first read; queue a revalidation when that read is still active.
        if (!store.session.info[event.data.sessionID] && !sync.has(`session:${event.data.sessionID}`)) return
        result.session.invalidate(event.data.sessionID)
@@ -5,9 +5,8 @@ import { coerceToString } from "./value.js"
 // WebIDL DOMString conversion: a missing argument is a TypeError, anything else stringifies.
 const base64 = (name: "atob" | "btoa") =>
  sync(name, (args, node) => {
-    if (args.length === 0) {
-      throw new InterpreterRuntimeError(`${name} requires 1 argument, but only 0 were provided.`, node).as("TypeError")
-    }
+    if (args.length === 0)
+      throw new InterpreterRuntimeError(`${name} requires 1 argument (a string)`, node).as("TypeError")
    const input = coerceToString(args[0])
    try {
      return name === "atob" ? atob(input) : btoa(input)
@@ -45,6 +45,7 @@ import m42 from "./migration/20260812181746_session_inbox.js"
 import m43 from "./migration/20260812213948_worktree.js"
 import m44 from "./migration/20260819222447_session_viewed_state.js"
 import m45 from "./migration/20260823191254_nullable_workspace_binding.js"
+import m46 from "./migration/20260910120000_clear_v1_session_permission.js"

 export const migrations = [
  m00,
@@ -93,4 +94,5 @@ export const migrations = [
  m43,
  m44,
  m45,
+  m46,
 ] satisfies DatabaseMigration.Migration[]
@@ -0,0 +1,13 @@
+import { Effect } from "effect"
+import type { DatabaseMigration } from "../migration.js"
+
+const migration: DatabaseMigration.Migration = {
+  id: "20260910120000_clear_v1_session_permission",
+  up(tx) {
+    return Effect.gen(function* () {
+      yield* tx.run(`UPDATE \`session_v2\` SET \`permission\` = NULL;`)
+    })
+  },
+}
+
+export default migration
@@ -600,7 +600,7 @@ export function run(options: Options = {}): Effect.Effect<RunResult, never, Data
                    id, ${projectID}, workspace_id, parent_id, slug, directory, path, title, version, share_url,
                    summary_additions, summary_deletions, summary_files, summary_diffs, metadata, cost,
                    tokens_input, tokens_output, tokens_reasoning, tokens_cache_read, tokens_cache_write,
-                    revert, permission, agent, model, time_created, time_updated, time_compacting, time_archived
+                    revert, NULL, agent, model, time_created, time_updated, time_compacting, time_archived
                  FROM session
                  WHERE id = ${nextID.id}
                `)
@@ -41,6 +41,8 @@ export const layer = Layer.effect(
          [
            "SessionRunnerModel.VariantUnavailableError",
            "SessionRunnerModel.UnsupportedPackageError",
+            "SessionRunnerModel.ModelConfigurationError",
+            "SessionRunnerModel.ModelInitializationError",
            "SessionRunnerModel.UnresolvedProviderVariablesError",
            "SessionRunnerModel.UnsupportedCompactionError",
          ],
@@ -9,7 +9,6 @@ import { AppProcess } from "@opencode/util/process"
 import { makeGlobalNode } from "@opencode/util/effect/app-node"
 import { File } from "./file.js"
 import { KeyedMutex } from "./effect/keyed-mutex.js"
-import { VcsPatch } from "./vcs/patch.js"

 export class Repository extends Schema.Class<Repository>("Git.Repository")({
  worktree: AbsolutePath,
@@ -309,7 +308,7 @@ const layer = Layer.effect(
      operationName: OperationError["operation"],
      repository: Repository,
      args: string[],
-      options?: { stdin?: string; env?: Record<string, string>; maxOutputBytes?: number },
+      options?: { stdin?: string; env?: Record<string, string> },
    ) {
      const result = yield* proc
        .run(
@@ -318,7 +317,7 @@ const layer = Layer.effect(
            env: options?.env,
            extendEnv: true,
          }),
-          { stdin: options?.stdin, maxOutputBytes: options?.maxOutputBytes },
+          { stdin: options?.stdin },
        )
        .pipe(
          Effect.mapError(
@@ -332,8 +331,7 @@ const layer = Layer.effect(
          ),
        )
      const text = result.stdout.toString("utf8")
-      if (result.exitCode === 0)
-        return { text, stderr: result.stderr.toString("utf8"), truncated: result.stdoutTruncated }
+      if (result.exitCode === 0) return { text, stderr: result.stderr.toString("utf8") }
      return yield* new OperationError({
        operation: operationName,
        directory: repository.worktree,
@@ -387,7 +385,9 @@ const layer = Layer.effect(
      maximumUntrackedFileBytes?: number
    }) {
      const list = (args: string[]) =>
-        repositoryOperation("refresh", input.repository, args).pipe(Effect.map((result) => nuls(result.text)))
+        repositoryOperation("refresh", input.repository, args).pipe(
+          Effect.map((result) => result.text.split("\0").filter(Boolean)),
+        )
      const [tracked, untracked] = yield* Effect.all(
        [
          list(["diff-files", "--name-only", "-z", "--", input.scope]),
@@ -464,7 +464,13 @@ const layer = Layer.effect(
          directory: input.repository.worktree,
          message: result.stderr.toString("utf8").trim() || "Failed to check ignored paths",
        })
-      return new Set(nuls(result.stdout.toString("utf8")).map((file) => RelativePath.make(file)))
+      return new Set(
+        result.stdout
+          .toString("utf8")
+          .split("\0")
+          .filter(Boolean)
+          .map((file) => RelativePath.make(file)),
+      )
    })

    const writeTree = Effect.fn("Git.tree.write")(function* (repository: Repository) {
@@ -493,23 +499,19 @@ const layer = Layer.effect(
      to: TreeID
    }) {
      // Undo needs both paths of a rename, not only its destination.
-      return nuls(
-        (yield* repositoryOperation("list_files", input.repository, [
-          "diff",
-          "--name-only",
-          "--no-renames",
-          "-z",
-          input.from,
-          input.to,
-        ])).text,
-      ).map((file) => RelativePath.make(file))
+      return (yield* repositoryOperation("list_files", input.repository, [
+        "diff",
+        "--name-only",
+        "--no-renames",
+        "-z",
+        input.from,
+        input.to,
+      ])).text
+        .split("\0")
+        .filter(Boolean)
+        .map((file) => RelativePath.make(file))
    })

-    /**
-     * Three batched invocations over the tree pair instead of three per file. An
-     * explicit empty selection diffs nothing; an absent one diffs every changed path.
-     * Patch output is capped like VCS diffs: files past the cap get an empty patch.
-     */
    const treeDiff = Effect.fn("Git.tree.diff")(function* (input: {
      repository: Repository
      from: TreeID
@@ -517,57 +519,49 @@ const layer = Layer.effect(
      context?: number
      paths?: readonly RelativePath[]
    }) {
-      if (input.paths?.length === 0) return []
-      const args = ["--no-renames", input.from, input.to, "--", ...(input.paths ?? [])]
-      // Patch headers have no -z form: unquoted paths keep chunksByFile matching non-ASCII names.
-      const [names, numbers, patch] = yield* Effect.all(
-        [
-          repositoryOperation("diff", input.repository, ["diff", "--name-status", "-z", ...args]),
-          repositoryOperation("diff", input.repository, ["diff", "--numstat", "-z", ...args]),
-          repositoryOperation(
+      const paths = input.paths ?? (yield* treeFiles(input))
+      return yield* Effect.forEach(paths, (file) =>
+        Effect.gen(function* () {
+          const statusText = (yield* repositoryOperation("diff", input.repository, [
            "diff",
-            input.repository,
-            ["-c", "core.quotepath=false", "diff", "--no-ext-diff", `--unified=${input.context ?? 3}`, ...args],
-            { maxOutputBytes: VcsPatch.MAX_TOTAL_PATCH_BYTES },
-          ),
-        ],
-        { concurrency: 3 },
-      )
-      const statuses = nuls(names.text)
-      const files = statuses.flatMap((code, index) => {
-        const file = statuses[index + 1]
-        if (index % 2 !== 0 || !file) return []
-        return [
-          {
-            file: RelativePath.make(file),
-            status: code.startsWith("A") ? "added" : code.startsWith("D") ? "deleted" : "modified",
-          } as const,
-        ]
-      })
-      const stats = new Map(
-        nuls(numbers.text).flatMap((line) => {
-          const [additions, deletions, ...file] = line.split("\t")
-          if (!additions || !deletions || file.length === 0) return []
-          return [
-            [
-              file.join("\t"),
-              additions === "-" || deletions === "-"
-                ? { binary: true, additions: 0, deletions: 0 }
-                : { binary: false, additions: Number(additions), deletions: Number(deletions) },
-            ] as const,
-          ]
+            "--name-status",
+            "--no-renames",
+            input.from,
+            input.to,
+            "--",
+            file,
+          ])).text.trim()
+          const status = statusText.startsWith("A") ? "added" : statusText.startsWith("D") ? "deleted" : "modified"
+          const stats = (yield* repositoryOperation("diff", input.repository, [
+            "diff",
+            "--numstat",
+            "--no-renames",
+            input.from,
+            input.to,
+            "--",
+            file,
+          ])).text.split("\t")
+          const binary = stats[0] === "-" || stats[1] === "-"
+          const patch = binary
+            ? ""
+            : (yield* repositoryOperation("diff", input.repository, [
+                "diff",
+                `--unified=${input.context ?? 3}`,
+                "--no-renames",
+                input.from,
+                input.to,
+                "--",
+                file,
+              ])).text
+          return {
+            file,
+            status,
+            additions: binary ? 0 : Number(stats[0] ?? 0),
+            deletions: binary ? 0 : Number(stats[1] ?? 0),
+            patch,
+          } satisfies File.Diff
        }),
      )
-      const patches = VcsPatch.chunksByFile(patch, (index) => files[index]?.file)
-      return files.map((entry) => {
-        const stat = stats.get(entry.file)
-        return {
-          ...entry,
-          additions: stat?.additions ?? 0,
-          deletions: stat?.deletions ?? 0,
-          patch: stat?.binary ? "" : (patches.get(entry.file) ?? VcsPatch.emptyPatch(entry.file)),
-        } satisfies File.Diff
-      })
    })

    const hasEntry = Effect.fnUntraced(function* (repository: Repository, tree: TreeID, file: RelativePath) {
@@ -739,11 +733,6 @@ function execute(cwd: string, proc: AppProcess.Interface, args: string[]) {
    )
 }

-/** Split NUL-terminated git output into its records. */
-function nuls(text: string) {
-  return text.split("\0").filter(Boolean)
-}
-
 function resolvePath(cwd: string, value: string) {
  const trimmed = value.replace(/[\r\n]+$/, "")
  if (!trimmed) return cwd
@@ -1,7 +1,7 @@
 export * as ModelResolver from "./model-resolver.js"

 import { makeLocationNode } from "@opencode/util/effect/app-node"
-import { LanguageModel } from "@opencode/ai"
+import { LanguageModel, ProviderConfigurationError } from "@opencode/ai"
 import { Auth } from "@opencode/ai/route"
 import { Context, Effect, Layer, Schema, Struct } from "effect"
 import { AISDK } from "./aisdk.js"
@@ -39,6 +39,40 @@ export class UnsupportedPackageError extends Schema.TaggedError<UnsupportedPacka
  }
 }

+export const InitializationPhase = Schema.Literals(["load", "init", "construct"])
+export type InitializationPhase = typeof InitializationPhase.Type
+
+/** Provider settings are missing, conflicting, or unsupported; the provider's own message tells the user what to fix. */
+export class ModelConfigurationError extends Schema.TaggedError<ModelConfigurationError>()(
+  "SessionRunnerModel.ModelConfigurationError",
+  {
+    providerID: Provider.ID,
+    modelID: ID,
+    package: Schema.String,
+    detail: Schema.String,
+  },
+) {
+  override get message() {
+    return `Cannot initialize ${this.providerID}/${this.modelID}: ${this.detail}`
+  }
+}
+
+/** A supported package failed unexpectedly while loading or constructing the model. */
+export class ModelInitializationError extends Schema.TaggedError<ModelInitializationError>()(
+  "SessionRunnerModel.ModelInitializationError",
+  {
+    providerID: Provider.ID,
+    modelID: ID,
+    package: Schema.String,
+    phase: InitializationPhase,
+    detail: Schema.String,
+  },
+) {
+  override get message() {
+    return `Cannot initialize ${this.providerID}/${this.modelID}: ${this.detail}`
+  }
+}
+
 export class UnresolvedProviderVariablesError extends Schema.TaggedError<UnresolvedProviderVariablesError>()(
  "SessionRunnerModel.UnresolvedProviderVariablesError",
  {
@@ -68,6 +102,8 @@ export class UnsupportedCompactionError extends Schema.TaggedError<UnsupportedCo
 export type Error =
  | VariantUnavailableError
  | UnsupportedPackageError
+  | ModelConfigurationError
+  | ModelInitializationError
  | UnresolvedProviderVariablesError
  | UnsupportedCompactionError
  | Integration.AuthorizationError
@@ -135,7 +171,11 @@ export const fromCatalogModel = (
  dependencies?: Dependencies,
 ): Effect.Effect<
  LanguageModel,
-  UnsupportedPackageError | UnresolvedProviderVariablesError | UnsupportedCompactionError
+  | UnsupportedPackageError
+  | ModelConfigurationError
+  | ModelInitializationError
+  | UnresolvedProviderVariablesError
+  | UnsupportedCompactionError
 > =>
  resolveCatalogModel(model, credential, dependencies).pipe(
    Effect.flatMap((resolved) => validateProviderVariables(model, resolved)),
@@ -178,14 +218,16 @@ const resolveCatalogModel = Effect.fn("ModelResolver.resolveCatalogModel")(funct
        ...configuration,
      }) ?? {},
    )
-    return yield* loadAISDK({ ...resolved, settings }).pipe(Effect.mapError(() => unsupported(resolved)))
+    return yield* loadAISDK({ ...resolved, settings }).pipe(
+      Effect.mapError((error) => initialization(resolved, "init", error.cause)),
+    )
  }
  if (!native) return yield* unsupported(resolved)

  const specifier = native
  const mapped = yield* prepareProviderSettings(resolved, mapping?.settings ?? configured)
  const module = yield* (dependencies?.loadPackage ?? Provider.loadPackage)(specifier).pipe(
-    Effect.mapError(() => unsupported(resolved)),
+    Effect.mapError((error) => initialization(resolved, "load", error.cause)),
  )
  const settings = {
    ...(credential ? Struct.omit(mapped, ["accessToken", "apiKey", "authToken"]) : mapped),
@@ -204,7 +246,15 @@ const resolveCatalogModel = Effect.fn("ModelResolver.resolveCatalogModel")(funct
          : runtime.compatibility,
      })
    },
-    catch: () => unsupported(resolved),
+    catch: (cause) =>
+      cause instanceof ProviderConfigurationError
+        ? new ModelConfigurationError({
+            providerID: resolved.providerID,
+            modelID: resolved.id,
+            package: resolved.package ?? "unknown",
+            detail: cause.message,
+          })
+        : initialization(resolved, "construct", cause),
  })
 })

@@ -277,6 +327,24 @@ const unsupported = (model: Info) =>
    package: model.package ?? "unknown",
  })

+const initialization = (model: Info, phase: InitializationPhase, cause: unknown) =>
+  new ModelInitializationError({
+    providerID: model.providerID,
+    modelID: model.id,
+    package: model.package ?? "unknown",
+    phase,
+    detail: causeMessage(cause) ?? `${phase} failed for ${model.package ?? "unknown"}`,
+  })
+
+// Unexpected throws still carry the most useful diagnosis in their message; a stack or an unknown value does not.
+const causeMessage = (cause: unknown): string | undefined => {
+  if (typeof cause === "string") return cause.trim() || undefined
+  if (!(cause instanceof globalThis.Error)) return undefined
+  const message = cause.message.trim()
+  if (message) return message
+  return causeMessage(cause.cause)
+}
+
 export const resolveModel = (
  model: Info,
  variant: VariantID | undefined,
@@ -154,7 +154,7 @@ const layer = Layer.effect(
      const session = yield* sessions.get(sessionID)
      if (!session) return yield* new SessionErrors.NotFoundError({ sessionID })
      const agent = yield* agents.resolve(agentID ?? session.agent)
-      return agent?.permissions ?? missingAgentPermissions
+      return merge(agent?.permissions ?? missingAgentPermissions, session.permissions ?? [])
    })

    function denied(input: Pick<Request, "action" | "resources">, rules: Permission.Ruleset) {
@@ -404,6 +404,7 @@ export const make = Effect.fn("PluginHost.make")(function* (
                : Effect.fail(new Error(`Permission request not found: ${input.requestID}`)),
            ),
          ),
+      rules: sessions.setPermissions,
    },
    plugin: {
      list: () => response(plugin.list()),
@@ -509,6 +510,8 @@ export const make = Effect.fn("PluginHost.make")(function* (
          title: input?.title,
          agent: input?.agent,
          model: input?.model,
+          metadata: input?.metadata,
+          permissions: input?.permissions,
          location:
            input?.location ?? Location.Ref.make({ directory: location.directory, workspaceID: location.workspaceID }),
        }),
@@ -11,6 +11,7 @@ import PROMPT_ASTRA from "./system-prompt/gpt-astra.txt"
 import PROMPT_KIMI from "./system-prompt/kimi.txt"
 import PROMPT_META from "./system-prompt/meta.txt"
 import PROMPT_TRINITY from "./system-prompt/trinity.txt"
+import PROMPT_ANTHROPIC from "./system-prompt/anthropic.txt"

 export const OpenAIPlugin = make("opencode.prompt.openai", (model) => {
  const id = model.id.toLowerCase()
@@ -18,6 +19,19 @@ export const OpenAIPlugin = make("opencode.prompt.openai", (model) => {
  return id.includes("gpt-6") ? PROMPT_ASTRA : PROMPT_GPT
 })

+export const AnthropicPlugin = make(
+  "opencode.prompt.anthropic",
+  (model) => {
+    const id = model.id.toLowerCase()
+    if (!id.includes("claude")) return undefined
+    return PROMPT_ANTHROPIC
+  },
+  "append",
+)
+
+// Both OpenAIToolsPlugin and AnthropicToolsPlugin are disabled intentionally until we can figure out a good ux for displaying
+// heavy grep/glob usage done via shell or other mechanisms
+
 export const OpenAIToolsPlugin = make("opencode.optimize.openai.tools", (model, tools) => {
  const ids = [model.id, model.modelID, model.family].join(" ").toLowerCase()
  if (!ids.includes("gpt")) return undefined
@@ -45,11 +59,12 @@ export const MetaPlugin = make("opencode.prompt.meta", (model) => {
  return PROMPT_META.replaceAll("{{MODEL_NAME}}", model.name)
 })

-export const Plugins = [OpenAIPlugin, KimiPlugin, ArceePlugin, MetaPlugin] as const
+export const Plugins = [OpenAIPlugin, AnthropicPlugin, KimiPlugin, ArceePlugin, MetaPlugin] as const

 function make(
  id: string,
  optimize: (model: Model.Info, tools: SessionHooks["context"]["tools"]) => string | undefined,
+  mode: "override" | "append" = "override",
 ) {
  return define({
    id,
@@ -66,7 +81,9 @@ function make(
          if ((yield* ctx.agent.get({ agentID: event.agent })).data.system) return
          const system = event.system[0]
          if (!system) return
-          event.system[0] = { ...system, text: SessionSystemPrompt.render(template, Object.keys(event.tools)) }
+          const rendered = SessionSystemPrompt.render(template, Object.keys(event.tools))
+          const text = mode === "append" ? `${system.text}\n\n${rendered}` : rendered
+          event.system[0] = { ...system, text }
        }).pipe(Effect.catch(() => Effect.void))
      yield* ctx.session.hook("context", hook)
      yield* ctx.session.hook("compaction", hook)
@@ -101,6 +101,7 @@ export const XAIPlugin = define({
      for (const model of provider.models.values()) {
        catalog.model.update(providerID, model.id, (draft) => {
          draft.capabilities.responsesWebsockets = true
+          draft.websocket = true
        })
      }
    })
@@ -0,0 +1,2 @@
+# Code comments
+By default, match the surrounding comment density: where the code has none, add none. Use comments sparingly, only where they are appropriate, such as for behavior that is not obvious from the code itself. Instructions from the user or the project take precedence over this guidance.
@@ -18,6 +18,7 @@ import { SessionMessageTable } from "./session/sql.js"
 import { SessionSchema } from "./session/schema.js"
 import { RelativePath } from "./schema.js"
 import { Agent } from "@opencode/schema/agent"
+import type { Permission } from "@opencode/schema/permission"
 import { App } from "./app.js"
 import { Slug } from "./util/slug.js"
 import path from "path"
@@ -54,11 +55,8 @@ import { SessionModelTransport } from "./session/model-transport.js"
 import { llmClient } from "./effect/app-node-platform.js"
 import { Snapshot } from "./snapshot.js"
 import { Session } from "./session/session.js"
-import { SessionDiff, TurnRangeError } from "./session/diff.js"
-import { LocationServiceMap } from "./location-service-map.js"
 import { FSUtil } from "@opencode/util/fs-util"
 import type { EventLog } from "@opencode/schema/event-log"
-import type { FileDiff } from "@opencode/schema/file-diff"
 import { Job } from "./job.js"
 import type { Command } from "./command.js"
 import { SessionEnvironment } from "./session/environment.js"
@@ -84,6 +82,7 @@ type CreateBaseInput = {
  agent?: Agent.ID
  model?: Model.Ref
  metadata?: SessionSchema.Metadata
+  permissions?: Permission.Ruleset
 }
 type CreateInput = CreateBaseInput &
  ({ location: Location.Ref; parentID?: never } | { parentID: SessionSchema.ID; location?: never })
@@ -110,7 +109,6 @@ export {
 type InboxItemRef = { readonly sessionID: SessionSchema.ID; readonly inboxID: SessionMessage.ID }

 export { DestinationNotFoundError, DestinationNotDirectoryError, DestinationUnavailableError }
-export { TurnRangeError }

 export interface Interface {
  readonly list: (input?: ListInput) => Effect.Effect<{
@@ -137,13 +135,6 @@ export interface Interface {
  readonly context: (
    sessionID: SessionSchema.ID,
  ) => Effect.Effect<SessionMessage.Info[], NotFoundError | MessageDecodeError>
-  /** Structured diffs of the files changed by a turn or range of turns; see `SessionDiff.turn`. */
-  readonly diff: (input: {
-    readonly sessionID: SessionSchema.ID
-    readonly messageID?: SessionMessage.ID
-    readonly to?: SessionMessage.ID
-    readonly context?: number
-  }) => Effect.Effect<readonly FileDiff.Info[], NotFoundError | MessageNotFoundError | TurnRangeError | Snapshot.Error>
  /**
   * Durable admitted session work not yet visible in projected history,
   * ordered by admission. Includes unpromoted user and synthetic inputs and
@@ -168,6 +159,10 @@ export interface Interface {
  readonly switchAgent: (input: { sessionID: SessionSchema.ID; agent: Agent.ID }) => Effect.Effect<void, NotFoundError>
  readonly switchModel: (input: { sessionID: SessionSchema.ID; model: Model.Ref }) => Effect.Effect<void, NotFoundError>
  readonly rename: (input: { sessionID: SessionSchema.ID; title: string }) => Effect.Effect<void, NotFoundError>
+  readonly setPermissions: (input: {
+    sessionID: SessionSchema.ID
+    permissions: Permission.Ruleset
+  }) => Effect.Effect<void, NotFoundError>
  readonly move: SessionMove.Interface["move"]
  readonly prompt: (
    input: Parameters<Session.Handle["prompt"]>[0] & { sessionID: SessionSchema.ID },
@@ -232,7 +227,6 @@ const layer = Layer.effect(
    const moves = yield* SessionMove.Service
    const jobs = yield* Job.Service
    const environments = yield* SessionEnvironment.Service
-    const locations = yield* LocationServiceMap.Service
    const sessions = yield* Session.make()
    const isDurableSessionEvent = Schema.is(SessionEvent.Durable)

@@ -260,9 +254,10 @@ const layer = Layer.effect(
              subpath: RelativePath.make(path.relative(project.directory, location.directory).replaceAll("\\", "/")),
              title: input.title,
              agent: input.agent,
-              // Children inherit metadata the way they inherit location, so
-              // host policies that read it treat the family uniformly.
+              // Children inherit metadata and permissions the way they inherit
+              // location, so host policies that read them treat the family uniformly.
              metadata: input.metadata ?? parent?.metadata,
+              permissions: input.permissions ?? parent?.permissions,
              model: input.model
                ? {
                    id: Model.ID.make(input.model.id),
@@ -364,17 +359,6 @@ const layer = Layer.effect(
        yield* result.get(sessionID)
        return yield* store.context(sessionID)
      }),
-      diff: Effect.fn("Session.diff")(function* (input) {
-        const session = yield* result.get(input.sessionID)
-        const active = yield* execution.isActive(input.sessionID)
-        return yield* SessionDiff.turn(db, locations, {
-          session,
-          active,
-          messageID: input.messageID,
-          to: input.to,
-          context: input.context,
-        })
-      }),
      inbox: (sessionID) => sessions.forSession(sessionID).inbox(),
      cancelInbox: (input) => sessions.forSession(input.sessionID).cancelInbox(input.inboxID),
      steerInbox: (input) => sessions.forSession(input.sessionID).steerInbox(input.inboxID),
@@ -410,6 +394,7 @@ const layer = Layer.effect(
      switchAgent: (input) => sessions.forSession(input.sessionID).switchAgent(input),
      switchModel: (input) => sessions.forSession(input.sessionID).switchModel(input),
      rename: (input) => sessions.forSession(input.sessionID).rename(input),
+      setPermissions: (input) => sessions.forSession(input.sessionID).setPermissions(input),
      move: moves.move,
      compact: (input) => sessions.forSession(input.sessionID).compact(input),
      wait: (sessionID) => sessions.forSession(sessionID).wait(),
@@ -463,7 +448,6 @@ export const node: LayerNode.Provider<Service, never, typeof Node.tags.values.gl
    SessionInbox.node,
    SessionMove.node,
    SessionProjector.node,
-    LocationServiceMap.node,
    FSUtil.node,
    App.node,
  ],
@@ -1,6 +1,7 @@
 export * as SessionContext from "./context.js"

 import { Model } from "@opencode/schema/model"
+import { Permission } from "../permission.js"
 import { Context, Effect, Layer } from "effect"
 import { Agent } from "../agent.js"
 import { Catalog } from "../catalog.js"
@@ -129,7 +130,7 @@ const layer = Layer.effect(
      if (!agent.info) return yield* new AgentNotFoundError({ sessionID: session.id, agent: session.agent ?? agent.id })
      const loaded = yield* Effect.all(
        {
-          tools: registry.snapshot(agent.info.permissions),
+          tools: registry.snapshot(Permission.merge(agent.info.permissions, session.permissions ?? [])),
          builtins: builtins.load(sessionID),
          discovery: discovery.load(),
          skills: skillInstructions.load(agent),
@@ -1,138 +0,0 @@
-export * as SessionDiff from "./diff.js"
-
-import { and, asc, eq, gt, inArray, lt, or, sql } from "drizzle-orm"
-import { Context, Effect, Schema } from "effect"
-import { Location } from "@opencode/schema/location"
-import { Database } from "../database/database.js"
-import { LocationServiceMap } from "../location-service-map.js"
-import { Snapshot } from "../snapshot.js"
-import { PATCH_CONTEXT_LINES } from "../vcs/patch.js"
-import { MessageNotFoundError } from "./error.js"
-import { SessionMessage } from "./message.js"
-import { SessionSchema } from "./schema.js"
-import { SessionMessageTable } from "./sql.js"
-
-export class TurnRangeError extends Schema.TaggedError<TurnRangeError>()("Session.TurnRangeError", {
-  sessionID: SessionSchema.ID,
-  field: Schema.Literals(["messageID", "to"]),
-  message: Schema.String,
-}) {}
-
-const decodeLocation = Schema.decodeUnknownSync(Schema.fromJsonString(Location.Ref))
-
-/**
- * Diff the files changed by the turn containing a user message. A turn runs from
- * the first prompt after the Session was last idle until the next idle marker, so
- * prompts steered in while it was busy belong to the same turn; `to` extends the
- * range through the turn containing a later user message. Compares the range's
- * first recorded start snapshot with its last recorded end snapshot; only a step
- * still running in the active Session compares against the working copy. Like VCS
- * diffs, an omitted `context` yields full-file patches.
- *
- * A Session without any idle marker predates them, so its prompts span until the
- * next user message instead.
- *
- * Snapshot trees live in the repository of the Location that captured them, so a
- * range spanning a location switch is rejected rather than diffed wrongly.
- */
-export const turn = Effect.fn("SessionDiff.turn")(function* (
-  db: Database.Interface["db"],
-  locations: Context.Service.Shape<typeof LocationServiceMap.Service>,
-  input: {
-    readonly session: SessionSchema.Info
-    /** The process is currently executing this Session. */
-    readonly active: boolean
-    readonly messageID?: SessionMessage.ID
-    readonly to?: SessionMessage.ID
-    readonly context?: number
-  },
-) {
-  const sessionID = input.session.id
-  const rows = yield* db
-    .select({ id: SessionMessageTable.id, type: SessionMessageTable.type, seq: SessionMessageTable.seq })
-    .from(SessionMessageTable)
-    .where(
-      and(
-        eq(SessionMessageTable.session_id, sessionID),
-        or(
-          inArray(SessionMessageTable.type, ["user", "idle"]),
-          input.messageID ? eq(SessionMessageTable.id, input.messageID) : undefined,
-          input.to ? eq(SessionMessageTable.id, input.to) : undefined,
-        ),
-      ),
-    )
-    .orderBy(asc(SessionMessageTable.seq))
-    .all()
-    .pipe(Effect.orDie)
-  const users = rows.filter((row) => row.type === "user")
-  const markers = rows.filter((row) => row.type === "idle")
-  const resolve = Effect.fn(function* (field: "messageID" | "to", id: SessionMessage.ID) {
-    const row = rows.find((row) => row.id === id)
-    if (!row) return yield* new MessageNotFoundError({ sessionID, messageID: id })
-    if (row.type !== "user")
-      return yield* new TurnRangeError({ sessionID, field, message: `Message ${id} is not a user message` })
-    return row
-  })
-  const anchor = input.messageID ? yield* resolve("messageID", input.messageID) : users[users.length - 1]
-  if (!anchor) return []
-  const last = input.to ? yield* resolve("to", input.to) : anchor
-  if (last.seq < anchor.seq)
-    return yield* new TurnRangeError({ sessionID, field: "to", message: `Message ${last.id} precedes ${anchor.id}` })
-  // Without any marker, history predates idle markers and a prompt's turn ends at the next prompt.
-  const legacy = markers.length === 0
-  // The turn opens with the first prompt after the previous idle marker; the anchor itself is the latest candidate.
-  const opened = markers.findLast((row) => row.seq < anchor.seq)?.seq ?? -1
-  const start = legacy ? anchor.seq : (users.find((row) => row.seq > opened)?.seq ?? anchor.seq)
-  const end = legacy ? users.find((row) => row.seq > last.seq)?.seq : markers.find((row) => row.seq > last.seq)?.seq
-  const steps = yield* db
-    .select({
-      seq: SessionMessageTable.seq,
-      start: sql<string | null>`json_extract(${SessionMessageTable.data}, '$.snapshot.start')`,
-      end: sql<string | null>`json_extract(${SessionMessageTable.data}, '$.snapshot.end')`,
-      completed: sql<number | null>`json_extract(${SessionMessageTable.data}, '$.time.completed')`,
-    })
-    .from(SessionMessageTable)
-    .where(
-      and(
-        eq(SessionMessageTable.session_id, sessionID),
-        eq(SessionMessageTable.type, "assistant"),
-        gt(SessionMessageTable.seq, start),
-        end === undefined ? undefined : lt(SessionMessageTable.seq, end),
-      ),
-    )
-    .orderBy(asc(SessionMessageTable.seq))
-    .all()
-    .pipe(Effect.orDie)
-  const first = steps[0]
-  const final = steps[steps.length - 1]
-  const from = steps.find((step) => step.start)?.start
-  if (!first || !final || !from) return []
-  const switches = yield* db
-    .select({
-      seq: SessionMessageTable.seq,
-      location: sql<string>`json_extract(${SessionMessageTable.data}, '$.location')`,
-      previous: sql<string | null>`json_extract(${SessionMessageTable.data}, '$.previous.location')`,
-    })
-    .from(SessionMessageTable)
-    .where(and(eq(SessionMessageTable.session_id, sessionID), eq(SessionMessageTable.type, "location-switched")))
-    .orderBy(asc(SessionMessageTable.seq))
-    .all()
-    .pipe(Effect.orDie)
-  if (switches.some((row) => row.seq > first.seq && row.seq < final.seq))
-    return yield* new TurnRangeError({ sessionID, field: "to", message: "Turn range spans a location change" })
-  const before = switches.findLast((row) => row.seq < first.seq)?.location
-  const after = switches.find((row) => row.seq > first.seq)?.previous
-  const location = before ? decodeLocation(before) : after ? decodeLocation(after) : input.session.location
-  const recorded = steps.findLast((step) => step.end)?.end
-  return yield* Effect.gen(function* () {
-    const snapshot = yield* Snapshot.Service
-    const running = input.active && final.completed === null
-    const to = running ? ((yield* snapshot.capture()) ?? recorded) : recorded
-    if (!to) return []
-    return yield* snapshot.diff({
-      from: Snapshot.ID.make(from),
-      to: Snapshot.ID.make(to),
-      context: input.context ?? PATCH_CONTEXT_LINES,
-    })
-  }).pipe(Effect.provide(locations.get(location)))
-})
@@ -50,6 +50,7 @@ export function fromRow(row: typeof SessionTable.$inferSelect): SessionSchema.In
    }),
    subpath: row.path ? RelativePath.make(row.path) : undefined,
    metadata: row.metadata ?? undefined,
+    permissions: row.permission ?? undefined,
    revert: row.revert ? decodeRevert(row.revert) : undefined,
    outcome: row.idle_outcome ?? undefined,
    time: {
@@ -60,21 +60,6 @@ export function update(adapter: Adapter, event: SessionEvent.DurableEvent) {
    )
  })

-  const idle = (outcome: SessionMessage.Idle["outcome"]) =>
-    clearCurrentRetry.pipe(
-      Effect.andThen(
-        adapter.appendMessage(
-          SessionMessage.Idle.make({
-            id: SessionMessage.ID.fromEvent(event.id),
-            type: "idle",
-            outcome,
-            metadata: event.metadata,
-            time: { created },
-          }),
-        ),
-      ),
-    )
-
  const project = pipe(
    Match.type<SessionEvent.DurableEvent>(),
    Match.discriminatorsExhaustive("type")({
@@ -131,6 +116,7 @@ export function update(adapter: Adapter, event: SessionEvent.DurableEvent) {
          )
        }),
      "session.renamed": () => Effect.void,
+      "session.permissions.updated": () => Effect.void,
      "session.deleted": () => Effect.void,
      "session.forked": () => Effect.void,
      "session.inbox.delivered": () => Effect.void,
@@ -138,11 +124,9 @@ export function update(adapter: Adapter, event: SessionEvent.DurableEvent) {
      "session.inbox.cancelled": () => Effect.void,
      "session.inbox.delivery.changed": () => Effect.void,
      "session.execution.started": () => Effect.void,
-      "session.execution.succeeded": () => idle("succeeded"),
-      "session.execution.failed": () => idle("failed"),
-      // Shutdown keeps the execution claim and the resumed drain continues the turn.
-      "session.execution.interrupted": (event) =>
-        event.data.reason === "shutdown" ? clearCurrentRetry : idle("interrupted"),
+      "session.execution.succeeded": () => clearCurrentRetry,
+      "session.execution.failed": () => clearCurrentRetry,
+      "session.execution.interrupted": () => clearCurrentRetry,
      "session.instructions.updated": (event) => {
        if (event.data.text === undefined) return Effect.void
        return adapter.appendMessage(
@@ -160,6 +160,7 @@ const projectFork = Effect.fn("SessionProjector.projectFork")(function* (
      agent: parent.agent,
      model: parent.model,
      metadata: parent.metadata,
+      permission: parent.permission,
      version: parent.version,
      cost: 0,
      tokens_input: 0,
@@ -450,6 +451,7 @@ const layer = Layer.effectDiscard(
            agent: event.data.agent,
            model: event.data.model,
            metadata: event.data.metadata,
+            permission: event.data.permissions,
            version: event.data.version,
            time_created: event.created,
            time_updated: event.created,
@@ -571,6 +573,14 @@ const layer = Layer.effectDiscard(
        .run()
        .pipe(Effect.orDie),
    )
+    yield* bus.project(SessionEvent.PermissionsUpdated, (event) =>
+      db
+        .update(SessionTable)
+        .set({ permission: event.data.permissions, time_updated: event.created })
+        .where(eq(SessionTable.id, event.data.sessionID))
+        .run()
+        .pipe(Effect.orDie),
+    )
    yield* bus.project(SessionEvent.Viewed, (event) => {
      const idle = event.data.idle
      return db
@@ -33,6 +33,10 @@ export const VariantUnavailableError = ModelResolver.VariantUnavailableError
 export type VariantUnavailableError = ModelResolver.VariantUnavailableError
 export const UnsupportedPackageError = ModelResolver.UnsupportedPackageError
 export type UnsupportedPackageError = ModelResolver.UnsupportedPackageError
+export const ModelConfigurationError = ModelResolver.ModelConfigurationError
+export type ModelConfigurationError = ModelResolver.ModelConfigurationError
+export const ModelInitializationError = ModelResolver.ModelInitializationError
+export type ModelInitializationError = ModelResolver.ModelInitializationError
 export const UnresolvedProviderVariablesError = ModelResolver.UnresolvedProviderVariablesError
 export type UnresolvedProviderVariablesError = ModelResolver.UnresolvedProviderVariablesError
 export const UnsupportedCompactionError = ModelResolver.UnsupportedCompactionError
@@ -226,7 +226,6 @@ function toLLMMessage(message: SessionMessage.Info, model: Model.Ref, providerMe
  switch (message.type) {
    case "agent-switched":
    case "model-switched":
-    case "idle":
      return []
    case "location-switched":
      return [
@@ -3,6 +3,7 @@ export * as Session from "./session.js"
 import { DateTime, Effect, Fiber, Scope } from "effect"
 import type { Agent } from "@opencode/schema/agent"
 import type { Model } from "@opencode/schema/model"
+import type { Permission } from "@opencode/schema/permission"
 import { Event } from "@opencode/schema/event"
 import { FSUtil } from "@opencode/util/fs-util"
 import { Bus } from "../bus.js"
@@ -72,6 +73,13 @@ export const make = Effect.fn("Session.make")(function* () {
    yield* get(sessionID)
    yield* bus.publish(SessionEvent.Renamed, { sessionID, title: input.title })
  })
+  const setPermissions = Effect.fn("Session.setPermissions")(function* (
+    sessionID: SessionSchema.ID,
+    input: { permissions: Permission.Ruleset },
+  ) {
+    yield* get(sessionID)
+    yield* bus.publish(SessionEvent.PermissionsUpdated, { sessionID, permissions: input.permissions })
+  })
  const switchAgent = Effect.fn("Session.switchAgent")(function* (
    sessionID: SessionSchema.ID,
    input: { agent: Agent.ID },
@@ -334,6 +342,7 @@ export const make = Effect.fn("Session.make")(function* () {
    message,
    view,
    rename,
+    setPermissions,
    switchAgent,
    switchModel,
    inbox,
@@ -356,6 +365,7 @@ export const make = Effect.fn("Session.make")(function* () {
    const message = operations.message.bind(undefined, sessionID)
    const view = operations.view.bind(undefined, sessionID)
    const rename = operations.rename.bind(undefined, sessionID)
+    const setPermissions = operations.setPermissions.bind(undefined, sessionID)
    const switchAgent = operations.switchAgent.bind(undefined, sessionID)
    const switchModel = operations.switchModel.bind(undefined, sessionID)
    const inbox = operations.inbox.bind(undefined, sessionID)
@@ -381,6 +391,7 @@ export const make = Effect.fn("Session.make")(function* () {
      message,
      view,
      rename,
+      setPermissions,
      switchAgent,
      switchModel,
      inbox,
@@ -5,7 +5,7 @@ import { ProjectTable } from "../project/sql.js"
 import type { SessionMessage } from "./message.js"
 import type { SessionInbox } from "./inbox.js"
 import type { FileDiff } from "@opencode/schema/file-diff"
-import type { PermissionV1 } from "@opencode/schema/permission-v1"
+import type { Permission } from "@opencode/schema/permission"
 import type { Project } from "@opencode/schema/project"
 import type { SessionSchema } from "./schema.js"
 import type { Workspace } from "@opencode/schema/workspace"
@@ -49,7 +49,7 @@ export const SessionTable = sqliteTable(
    tokens_cache_read: integer().notNull().default(0),
    tokens_cache_write: integer().notNull().default(0),
    revert: text({ mode: "json" }).$type<Session.Revert | RevertV1>(),
-    permission: text({ mode: "json" }).$type<PermissionV1.Ruleset>(),
+    permission: text({ mode: "json" }).$type<Permission.Ruleset>(),
    agent: text(),
    model: text({ mode: "json" }).$type<{
      id: string
@@ -55,6 +55,8 @@ export function toSessionError(cause: unknown): SessionError.Error {
    cause instanceof SessionRunnerModel.ModelUnavailableError ||
    cause instanceof SessionRunnerModel.VariantUnavailableError ||
    cause instanceof SessionRunnerModel.UnsupportedPackageError ||
+    cause instanceof SessionRunnerModel.ModelConfigurationError ||
+    cause instanceof SessionRunnerModel.ModelInitializationError ||
    cause instanceof SessionRunnerModel.UnresolvedProviderVariablesError
  )
    return { type: "provider.no-route", message: cause.message }
@@ -103,6 +103,7 @@ const layer = Layer.effect(
              agent: input.data.info.agent,
              model: input.data.info.model,
              metadata: input.data.info.metadata,
+              permissions: input.data.info.permissions,
            },
            {
              location: input.location,
@@ -131,55 +131,38 @@ const layer = Layer.effect(
      )
    })

-    const comparison = Effect.fnUntraced(function* (operation: "files" | "diff", input: CompareInput) {
+    const compare = Effect.fnUntraced(function* (operation: "files" | "diff", input: CompareInput) {
      const repo = yield* repository.pipe(Effect.mapError((cause) => failure(operation, cause)))
-      return {
-        source: repo.source,
+      const comparison = {
        repository: repo.snapshotRepository,
        from: Git.TreeID.make(input.from),
        to: Git.TreeID.make(input.to),
      }
-    })
-
-    // Snapshots track every scoped file; the source repository's ignore rules decide what callers see.
-    const ignored = Effect.fnUntraced(function* (
-      operation: "files" | "diff",
-      source: Git.Repository,
-      paths: readonly RelativePath[],
-    ) {
-      return yield* git.index
-        .ignored({ repository: source, paths })
+      const files = yield* git.tree.files(comparison).pipe(Effect.mapError((cause) => failure(operation, cause)))
+      const ignored = yield* git.index
+        .ignored({ repository: repo.source, paths: files })
        .pipe(Effect.mapError((cause) => failure(operation, cause)))
+      return {
+        input: comparison,
+        files,
+        ignored,
+      }
    })

    const files = Effect.fn("Snapshot.files")(function* (input: CompareInput) {
-      const compared = yield* comparison("files", input)
-      const changed = yield* git.tree
-        .files({ repository: compared.repository, from: compared.from, to: compared.to })
-        .pipe(Effect.mapError((cause) => failure("files", cause)))
-      const skipped = yield* ignored("files", compared.source, changed)
-      return changed.filter((file) => !skipped.has(file))
+      const comparison = yield* compare("files", input)
+      return comparison.files.filter((file) => !comparison.ignored.has(file))
    })

    const diff = Effect.fn("Snapshot.diff")(function* (input: DiffInput) {
-      if (input.paths?.length === 0) return []
-      const compared = yield* comparison("diff", input)
-      // Only an explicit selection becomes a pathspec; ignored paths are dropped from the result instead.
-      const diffs = yield* git.tree
+      const comparison = yield* compare("diff", input)
+      return yield* git.tree
        .diff({
-          repository: compared.repository,
-          from: compared.from,
-          to: compared.to,
+          ...comparison.input,
          context: input.context,
-          paths: input.paths,
+          paths: (input.paths ?? comparison.files).filter((file) => !comparison.ignored.has(file)),
        })
        .pipe(Effect.mapError((cause) => failure("diff", cause)))
-      const skipped = yield* ignored(
-        "diff",
-        compared.source,
-        diffs.map((file) => RelativePath.make(file.file)),
-      )
-      return diffs.filter((file) => !skipped.has(RelativePath.make(file.file)))
    })

    const plan = Effect.fnUntraced(function* (worktree: AbsolutePath, input: RestoreInput) {
@@ -99,8 +99,19 @@ export const layer = Layer.effect(
                          },
                    )
                    const text = content.flatMap((part) => (part.type === "text" ? [part.text] : [])).join("\n")
+                    const output = () => {
+                      if (result.structured !== undefined) return result.structured
+                      if (text === "") return null
+                      // Agents assume JSON returned as text is already an object, so parse it when the server declares no schema.
+                      if (tool.outputSchema === undefined && (text.startsWith("{") || text.startsWith("["))) {
+                        try {
+                          return JSON.parse(text)
+                        } catch {}
+                      }
+                      return text
+                    }
                    return {
-                      output: result.structured ?? (text === "" ? null : text),
+                      output: output(),
                      ...(content.length === 0 ? {} : { content }),
                    }
                  }).pipe(
@@ -6,7 +6,6 @@ import { Effect } from "effect"
 import { LayerNode } from "@opencode/util/effect/layer-node"
 import { Git } from "@opencode/core/git"
 import { AbsolutePath, RelativePath } from "@opencode/core/schema"
-import { VcsPatch } from "@opencode/core/vcs/patch"
 import { branch, commit, initRepo, read, withRemote } from "./fixture/git"
 import { tmpdir } from "./fixture/tmpdir"
 import { testEffect } from "./lib/effect"
@@ -197,42 +196,6 @@ describe("Git trees", () => {
    }),
  )

-  it.live("caps batched tree patches, keeps per-file stats past the cap, and matches non-ASCII names", () =>
-    Effect.gen(function* () {
-      const root = yield* Effect.acquireRelease(
-        Effect.promise(() => tmpdir()),
-        (dir) => Effect.promise(() => dir[Symbol.asyncDispose]()),
-      )
-      yield* Effect.promise(() => initRepo(root.path))
-      const git = yield* Git.Service
-      const repository = yield* git.repo.discover(AbsolutePath.make(root.path))
-      if (!repository) throw new Error("Repository not found")
-      const before = yield* git.tree.capture({ repository, scopes: [RelativePath.make(".")] })
-      const lines = Math.ceil(VcsPatch.MAX_TOTAL_PATCH_BYTES / 80) + 1
-      yield* Effect.promise(async () => {
-        await Bun.write(path.join(root.path, "a-small.txt"), "small\n")
-        await Bun.write(path.join(root.path, "b-large.txt"), `${"x".repeat(79)}\n`.repeat(lines))
-        await Bun.write(path.join(root.path, "c-binary.bin"), new Uint8Array([0, 1, 2, 3]))
-        await Bun.write(path.join(root.path, "a-caf\u00e9.txt"), "caf\u00e9\n")
-      })
-      const after = yield* git.tree.capture({ repository, scopes: [RelativePath.make(".")] })
-
-      const diffs = yield* git.tree.diff({ repository, from: before, to: after, context: 0 })
-      expect(diffs.map((item) => [item.file, item.status, item.additions, item.deletions])).toEqual([
-        ["a-caf\u00e9.txt", "added", 1, 0],
-        ["a-small.txt", "added", 1, 0],
-        ["b-large.txt", "added", lines, 0],
-        ["c-binary.bin", "added", 0, 0],
-      ])
-      // Patch headers are not NUL-delimited; a quoted (octal-escaped) header would orphan this chunk.
-      expect(diffs[0]?.patch).toContain("+caf\u00e9\n")
-      expect(diffs[1]?.patch).toContain("+small\n")
-      expect(diffs[2]?.patch).toBe(VcsPatch.emptyPatch("b-large.txt"))
-      expect(diffs[3]?.patch).toBe("")
-      expect(yield* git.tree.diff({ repository, from: before, to: after, paths: [] })).toEqual([])
-    }),
-  )
-
  it.live("captures, compares, previews, and restores scoped trees", () =>
    Effect.gen(function* () {
      const root = yield* Effect.acquireRelease(
@@ -324,6 +324,32 @@ const mcp = Layer.mock(Mcp.Service, {
        description: "Status",
        inputSchema: { type: "object", properties: {} },
      }),
+      new Mcp.Tool({
+        server: Mcp.ServerName.make("demo"),
+        name: "issues",
+        description: "Returns JSON as text",
+        inputSchema: { type: "object", properties: {} },
+      }),
+      new Mcp.Tool({
+        server: Mcp.ServerName.make("demo"),
+        name: "count",
+        description: "Returns a number as text",
+        inputSchema: { type: "object", properties: {} },
+      }),
+      new Mcp.Tool({
+        server: Mcp.ServerName.make("demo"),
+        name: "typed",
+        description: "Declares a string output and returns JSON as text",
+        inputSchema: { type: "object", properties: {} },
+        outputSchema: { type: "string" },
+      }),
+      new Mcp.Tool({
+        server: Mcp.ServerName.make("direct"),
+        name: "issues",
+        codemode: false,
+        description: "Returns JSON as text",
+        inputSchema: { type: "object", properties: {} },
+      }),
      new Mcp.Tool({
        server: Mcp.ServerName.make("direct"),
        name: "lookup",
@@ -374,6 +400,20 @@ const mcp = Layer.mock(Mcp.Service, {
          isError: false,
          content: [{ type: "text", text: "hello" }],
        })
+      if (input.name === "issues" || input.name === "typed")
+        return new Mcp.ToolResult({
+          server: Mcp.ServerName.make(input.server),
+          tool: input.name,
+          isError: false,
+          content: [{ type: "text", text: '{"issues":[{"id":1}]}' }],
+        })
+      if (input.name === "count")
+        return new Mcp.ToolResult({
+          server: Mcp.ServerName.make(input.server),
+          tool: input.name,
+          isError: false,
+          content: [{ type: "text", text: "42" }],
+        })
      return new Mcp.ToolResult({
        server: Mcp.ServerName.make(input.server),
        tool: input.name,
@@ -1943,6 +1983,7 @@ it.effect("advertises MCP output schemas to Code Mode", () =>

    expect(toolSet.definitions.map((tool) => tool.name)).toEqual([
      "direct_fail",
+      "direct_issues",
      "direct_lookup",
      "direct_media",
      "execute",
@@ -2033,6 +2074,39 @@ it.effect("returns content-only MCP results through Code Mode", () =>
  }),
 )

+it.effect("parses JSON text results from MCP tools without an output schema", () =>
+  Effect.gen(function* () {
+    assertion = yield* Deferred.make<Permission.AssertInput>()
+    decision = Effect.void
+    const registry = yield* Tool.Service
+    const registration = yield* McpTool.Service
+    yield* registration.flush
+    const toolSet = yield* registry.snapshot()
+
+    const run = (code: string) =>
+      toolSet
+        .execute({
+          sessionID: Session.ID.make("ses_mcp_json_text"),
+          ...toolIdentity,
+          call: { type: "tool-call", id: `call_${code.length}`, name: "execute", input: { code } },
+        })
+        .pipe(Effect.map((execution) => execution.output.output))
+
+    expect(yield* run("return (await tools.demo.issues({})).issues[0].id")).toBe("1")
+    expect(yield* run("return typeof (await tools.demo.count({}))")).toBe("string")
+    expect(yield* run("return typeof (await tools.demo.typed({}))")).toBe("string")
+
+    // Outside Code Mode the content the model reads is the original text.
+    expect(
+      yield* toolSet.execute({
+        sessionID: Session.ID.make("ses_mcp_json_text"),
+        ...toolIdentity,
+        call: { type: "tool-call", id: "call_direct_issues", name: "direct_issues", input: {} },
+      }),
+    ).toMatchObject({ output: { issues: [{ id: 1 }] }, content: [{ type: "text", text: '{"issues":[{"id":1}]}' }] })
+  }),
+)
+
 it.effect("advertises MCP tools directly when Code Mode is disabled for the server", () =>
  Effect.gen(function* () {
    const registry = yield* Tool.Service
@@ -1395,6 +1395,81 @@ describe("ModelResolver", () => {
    }),
  )

+  it.effect("reports provider configuration errors from supported packages", () =>
+    Effect.gen(function* () {
+      const failure = yield* ModelResolver.fromCatalogModel(
+        model(Provider.aisdk("@ai-sdk/azure"), {
+          providerID: Provider.ID.azure,
+          modelID: "gpt-5.4-nano",
+        }),
+        Credential.OAuth.make({
+          type: "oauth",
+          methodID: Integration.MethodID.make("oauth"),
+          access: "oauth-token",
+          refresh: "refresh",
+          expires: Date.now() + 60_000,
+        }),
+      ).pipe(Effect.flip)
+
+      expect(failure).toMatchObject({
+        _tag: "SessionRunnerModel.ModelConfigurationError",
+        providerID: "azure",
+        modelID: "test-model",
+        package: "aisdk:@ai-sdk/azure",
+        detail: "Azure requires resourceName or baseURL",
+      })
+      expect(failure.message).toBe("Cannot initialize azure/test-model: Azure requires resourceName or baseURL")
+    }),
+  )
+
+  it.effect("distinguishes unexpected constructor failures from configuration errors", () =>
+    Effect.gen(function* () {
+      const failure = yield* ModelResolver.fromCatalogModel(model("@opencode/ai/providers/custom"), undefined, {
+        loadPackage: () =>
+          Effect.succeed({
+            model: () => {
+              throw new Error("custom provider crashed")
+            },
+          }),
+      }).pipe(Effect.flip)
+
+      expect(failure).toMatchObject({
+        _tag: "SessionRunnerModel.ModelInitializationError",
+        phase: "construct",
+        detail: "custom provider crashed",
+      })
+    }),
+  )
+
+  it.effect("reports package load and AISDK initialization failures with their causes", () =>
+    Effect.gen(function* () {
+      const load = yield* ModelResolver.fromCatalogModel(model("@opencode/ai/providers/custom"), undefined, {
+        loadPackage: (specifier) =>
+          Effect.fail(
+            new Provider.LoadError({ package: specifier, cause: new Error(`Provider package ${specifier} is broken`) }),
+          ),
+      }).pipe(Effect.flip)
+      expect(load).toMatchObject({
+        _tag: "SessionRunnerModel.ModelInitializationError",
+        phase: "load",
+        detail: "Provider package @opencode/ai/providers/custom is broken",
+      })
+
+      const init = yield* ModelResolver.fromCatalogModel(model(Provider.aisdk("@ai-sdk/cohere")), undefined, {
+        loadAISDK: (runtime) =>
+          Effect.fail(
+            new AISDK.InitError({ providerID: runtime.providerID, cause: new Error("Cohere plugin failed") }),
+          ),
+      }).pipe(Effect.flip)
+      expect(init).toMatchObject({
+        _tag: "SessionRunnerModel.ModelInitializationError",
+        phase: "init",
+        detail: "Cohere plugin failed",
+      })
+      expect(init.message).toBe("Cannot initialize test-provider/test-model: Cohere plugin failed")
+    }),
+  )
+
  it.effect("drops an empty API key before loading an AISDK package", () =>
    Effect.gen(function* () {
      const native = yield* ModelResolver.fromCatalogModel(
@@ -224,6 +224,34 @@ describe("Permission", () => {
    }),
  )

+  it.effect("merges session rules after agent rules and before saved approvals", () =>
+    Effect.gen(function* () {
+      yield* setup([{ action: "*", resource: "*", effect: "allow" }])
+      const { db } = yield* Database.Service
+      const service = yield* Permission.Service
+      const setSession = (permission: Permission.Ruleset) =>
+        db
+          .update(SessionTable)
+          .set({ permission })
+          .where(eq(SessionTable.id, Session.ID.make("ses_test")))
+          .run()
+          .pipe(Effect.orDie)
+
+      yield* setSession([{ action: "edit", resource: "/original/**", effect: "deny" }])
+      expect(yield* service.ask(assertion({ action: "edit", resources: ["/original/src/index.ts"] }))).toMatchObject({
+        effect: "deny",
+      })
+
+      yield* setRules([])
+      const saved = yield* PermissionSaved.Service
+      yield* saved.add({ projectID: Project.ID.global, action: "bash", resources: ["pwd"] })
+      yield* setSession([{ action: "bash", resource: "*", effect: "deny" }])
+      expect(yield* service.ask(assertion({ action: "bash", resources: ["pwd"] }))).toMatchObject({ effect: "deny" })
+      yield* setSession([{ action: "bash", resource: "*", effect: "ask" }])
+      expect(yield* service.ask(assertion({ action: "bash", resources: ["pwd"] }))).toMatchObject({ effect: "allow" })
+    }),
+  )
+
  it.effect("uses saved bash approvals while preserving configured deny precedence", () =>
    Effect.gen(function* () {
      yield* setup()
@@ -108,6 +108,7 @@ export function host(overrides: Overrides = {}): Plugin.Context {
      list: () => Effect.die("unused permission.list"),
      get: () => Effect.die("unused permission.get"),
      reply: () => Effect.die("unused permission.reply"),
+      rules: () => Effect.die("unused permission.rules"),
    },
    plugin: overrides.plugin ?? {
      list: () => Effect.die("unused plugin.list"),
@@ -19,9 +19,11 @@ import PROMPT_GPT from "../../src/plugin/system-prompt/gpt.txt"
 import PROMPT_ASTRA from "../../src/plugin/system-prompt/gpt-astra.txt"
 import PROMPT_KIMI from "../../src/plugin/system-prompt/kimi.txt"
 import PROMPT_TRINITY from "../../src/plugin/system-prompt/trinity.txt"
+import PROMPT_ANTHROPIC from "../../src/plugin/system-prompt/anthropic.txt"

 const it = testEffect(PluginTestLayer)
 const fallback = SessionSystemPrompt.make([])
+const appended = `${fallback}\n\n${SessionSystemPrompt.render(PROMPT_ANTHROPIC, [])}`
 const makeHost = Effect.gen(function* () {
  const agents = yield* Agent.Service
  const plugins = yield* Plugin.Service
@@ -48,6 +50,7 @@ describe("OptimizePlugin", () => {
  test("enables prompt plugins without model-specific tool optimization", () => {
    expect(OptimizePlugin.Plugins.map((plugin) => plugin.id)).toEqual([
      "opencode.prompt.openai",
+      "opencode.prompt.anthropic",
      "opencode.prompt.kimi",
      "opencode.prompt.arcee",
      "opencode.prompt.meta",
@@ -76,7 +79,7 @@ describe("OptimizePlugin", () => {
        ["gpt-5-codex", PROMPT_GPT],
        ["gpt-6-astra", PROMPT_ASTRA],
        ["gemini-2.5-pro", fallback],
-        ["claude-sonnet-4", fallback],
+        ["claude-sonnet-4", appended],
        ["kimi-k2", PROMPT_KIMI],
        ["trinity", PROMPT_TRINITY],
        ["meta/muse-spark-1.1", PROMPT_META.replaceAll("{{MODEL_NAME}}", "Muse Spark")],
@@ -128,6 +131,30 @@ describe("OptimizePlugin", () => {
    }),
  )

+  it.effect("appends the Anthropic prompt to the baseline without changing tools or project instructions", () =>
+    Effect.gen(function* () {
+      const catalog = yield* Catalog.Service
+      const hooks = yield* PluginHooks.Service
+      const pluginHost = yield* makeHost
+      yield* catalog.transform((editor) =>
+        editor.model.update(Provider.ID.make("test"), Model.ID.make("claude-sonnet-4"), () => {}),
+      )
+      yield* OptimizePlugin.AnthropicPlugin.effect(pluginHost)
+      const event = context("claude-sonnet-4")
+      event.system.push(SystemPart.make("Project instructions"))
+
+      yield* hooks.trigger("session", "context", event)
+
+      const baseline = SessionSystemPrompt.render(fallback, Object.keys(event.tools))
+      expect(event.system.map((part) => part.text)).toEqual([
+        `${baseline}\n\n${SessionSystemPrompt.render(PROMPT_ANTHROPIC, Object.keys(event.tools))}`,
+        "Project instructions",
+      ])
+      expect(event.system[0]?.text.startsWith(baseline)).toBe(true)
+      expect(Object.keys(event.tools).sort()).toEqual(["edit", "glob", "grep", "patch", "read", "shell", "write"])
+    }),
+  )
+
  it.effect("curates search tools across providers without changing editing tools", () =>
    Effect.gen(function* () {
      const hooks = yield* PluginHooks.Service
@@ -298,7 +325,7 @@ describe("OptimizePlugin", () => {
        ["codex-family-alias", "custom-deployment", "GPT-CODEX", fallback],
        ["astra-api-alias", "gpt-6-astra", undefined, fallback],
        ["astra-family-alias", "custom-deployment", "gpt-6", fallback],
-        ["claude-catalog-alias", "custom-model", undefined, fallback],
+        ["claude-catalog-alias", "custom-model", undefined, appended],
        ["anthropic-api-alias", "Claude-Opus-4-8", undefined, fallback],
        ["anthropic-family-alias", "custom-deployment", "CLAUDE-SONNET", fallback],
      ] as const
@@ -69,7 +69,7 @@ describe("XAIPlugin", () => {
    }),
  )

-  it.effect("keeps xAI Responses WebSockets opt-in", () =>
+  it.effect("enables xAI Responses WebSockets", () =>
    Effect.gen(function* () {
      const catalog = yield* Catalog.Service
      const providerID = Provider.ID.make("xai")
@@ -84,7 +84,7 @@ describe("XAIPlugin", () => {

      const model = yield* catalog.model.get(providerID, Model.ID.make("grok-4.6"))
      expect(model?.capabilities.responsesWebsockets).toBe(true)
-      expect(model?.websocket).toBeUndefined()
+      expect(model?.websocket).toBe(true)
    }),
  )
 })
@@ -388,6 +388,32 @@ describe("Session.create", () => {
    }),
  )

+  it.effect("stores permission rules, inherits them through children and forks, and replaces them", () =>
+    Effect.gen(function* () {
+      const session = yield* Session.Service
+      const bus = yield* Bus.Service
+      const { db } = yield* Database.Service
+      const permissions = [{ action: "edit", resource: "/original/**", effect: "deny" as const }]
+
+      const created = yield* session.create({ location, permissions })
+      expect(created.permissions).toEqual(permissions)
+      expect((yield* session.create({ parentID: created.id })).permissions).toEqual(permissions)
+      expect((yield* session.create({ parentID: created.id, permissions: [] })).permissions).toEqual([])
+
+      yield* session.prompt({ sessionID: created.id, text: "Fork context", resume: false })
+      yield* SessionInbox.promote(db, bus, created.id, "steer")
+      const forked = yield* session.fork({ sessionID: created.id, boundary: { type: "through" } })
+      expect(forked.permissions).toEqual(permissions)
+
+      const replaced = [{ action: "shell", resource: "*", effect: "ask" as const }]
+      yield* session.setPermissions({ sessionID: created.id, permissions: replaced })
+      expect((yield* session.get(created.id)).permissions).toEqual(replaced)
+      expect(
+        yield* session.setPermissions({ sessionID: Session.ID.create(), permissions: replaced }).pipe(Effect.flip),
+      ).toBeInstanceOf(Session.NotFoundError)
+    }),
+  )
+
  it.effect("inherits location from an existing parent when omitted", () =>
    Effect.gen(function* () {
      const session = yield* Session.Service
@@ -1330,7 +1356,12 @@ describe("SessionTransfer", () => {
      const transfer = yield* SessionTransfer.Service
      const bus = yield* Bus.Service
      const { db } = yield* Database.Service
-      const template = yield* session.create({ location, title: "Exported", metadata: { channel: "C123" } })
+      const template = yield* session.create({
+        location,
+        title: "Exported",
+        metadata: { channel: "C123" },
+        permissions: [{ action: "edit", resource: "*", effect: "deny" }],
+      })
      const sessionID = Session.ID.create()
      const sourceMessageID = SessionMessage.ID.create()
      const errorMessageID = SessionMessage.ID.create()
@@ -1376,7 +1407,13 @@ describe("SessionTransfer", () => {
      })
      const messages = yield* session.messages({ sessionID, order: "asc" })

-      expect(imported).toMatchObject({ id: sessionID, title: "Exported", location, metadata: { channel: "C123" } })
+      expect(imported).toMatchObject({
+        id: sessionID,
+        title: "Exported",
+        location,
+        metadata: { channel: "C123" },
+        permissions: [{ action: "edit", resource: "*", effect: "deny" }],
+      })
      expect(imported.time).toMatchObject({
        updated: DateTime.makeUnsafe(1_000),
        idle: DateTime.makeUnsafe(200),
@@ -1,198 +0,0 @@
-import { $ } from "bun"
-import { describe, expect } from "bun:test"
-import fs from "fs/promises"
-import path from "path"
-import { Effect } from "effect"
-import { Agent } from "@opencode/core/agent"
-import { Bus } from "@opencode/core/bus"
-import { Database } from "@opencode/core/database/database"
-import { AppNodeBuilder } from "@opencode/core/effect/app-node-builder"
-import { LocationServiceMap } from "@opencode/core/location-service-map"
-import { Model } from "@opencode/core/model"
-import { Plugin } from "@opencode/core/plugin"
-import { Provider } from "@opencode/core/provider"
-import { AbsolutePath } from "@opencode/core/schema"
-import { Session } from "@opencode/core/session"
-import { SessionDiff } from "@opencode/core/session/diff"
-import { SessionEvent } from "@opencode/core/session/event"
-import { SessionExecution } from "@opencode/core/session/execution"
-import { SessionInbox } from "@opencode/core/session/inbox"
-import { SessionMessage } from "@opencode/core/session/message"
-import { SessionProjector } from "@opencode/core/session/projector"
-import { Snapshot } from "@opencode/core/snapshot"
-import { Money } from "@opencode/schema/money"
-import { LayerNode } from "@opencode/util/effect/layer-node"
-import { Global } from "@opencode/util/global"
-import { tempGlobalLayer } from "./fixture/global"
-import { offlineModels } from "./fixture/models"
-import { tmpdirScoped } from "./fixture/tmpdir"
-import { testEffect } from "./lib/effect"
-
-const it = testEffect(
-  AppNodeBuilder.build(
-    LayerNode.group([Database.node, Bus.node, SessionProjector.node, Session.node, LocationServiceMap.node]),
-    [Global.node.replace(tempGlobalLayer), SessionExecution.node.replace(SessionExecution.noopLayer), offlineModels],
-  ),
-)
-
-const summarize = (file: { file: string; status: string; additions: number; deletions: number }) => [
-  file.file,
-  file.status,
-  file.additions,
-  file.deletions,
-]
-
-describe("Session.diff", () => {
-  it.live(
-    "diffs the busy period containing a user message and ranges across later turns",
-    () =>
-      Effect.gen(function* () {
-        const tmp = yield* tmpdirScoped()
-        const directory = path.join(tmp.path, "project")
-        const write = (name: string, content: string) => () => Bun.write(path.join(directory, name), content)
-        yield* Effect.promise(async () => {
-          await fs.mkdir(directory)
-          await write("first.txt", "first\n")()
-          await write("second.txt", "second\n")()
-          await write("manual.txt", "manual\n")()
-          await $`git init -q`.cwd(directory).quiet()
-          await $`git -c core.fsmonitor=false add .`.cwd(directory).quiet()
-        })
-        const sessions = yield* Session.Service
-        const database = yield* Database.Service
-        const bus = yield* Bus.Service
-        const locations = yield* LocationServiceMap.Service
-        const created = yield* sessions.create({ location: { directory: AbsolutePath.make(directory) } })
-        const diff = (input?: { messageID?: SessionMessage.ID; to?: SessionMessage.ID }) =>
-          sessions
-            .diff({ sessionID: created.id, context: 0, ...input })
-            .pipe(Effect.map((files) => files.map(summarize)))
-        expect(yield* diff()).toEqual([])
-
-        yield* Effect.gen(function* () {
-          const plugins = yield* Plugin.Service
-          yield* plugins.awaitActivation
-          const snapshot = yield* Snapshot.Service
-          const usage = {
-            cost: Money.USD.zero,
-            tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
-          }
-          const prompt = Effect.fn(function* (text: string) {
-            const admitted = yield* sessions.prompt({ sessionID: created.id, text, resume: false })
-            yield* SessionInbox.promote(database.db, bus, created.id, "steer")
-            return admitted.id
-          })
-          const step = Effect.fn(function* (edit: () => Promise<unknown>, end: "recorded" | "unrecorded" | "running") {
-            const before = yield* snapshot.capture()
-            if (!before) throw new Error("Start snapshot missing")
-            const assistantMessageID = SessionMessage.ID.create()
-            yield* bus.publish(SessionEvent.Step.Started, {
-              sessionID: created.id,
-              assistantMessageID,
-              agent: Agent.defaultID,
-              model: { id: Model.ID.make("test-model"), providerID: Provider.ID.make("test-provider") },
-              snapshot: before,
-            })
-            yield* Effect.promise(edit)
-            if (end === "running") return assistantMessageID
-            const after = end === "recorded" ? yield* snapshot.capture() : undefined
-            yield* bus.publish(SessionEvent.Step.Ended, {
-              sessionID: created.id,
-              assistantMessageID,
-              finish: "stop",
-              ...usage,
-              snapshot: after,
-              files: after && before ? yield* snapshot.files({ from: before, to: after }) : undefined,
-            })
-            return assistantMessageID
-          })
-
-          const idle = (outcome: "succeeded" | "failed") =>
-            outcome === "succeeded"
-              ? bus.publish(SessionEvent.Execution.Succeeded, { sessionID: created.id })
-              : bus.publish(SessionEvent.Execution.Failed, {
-                  sessionID: created.id,
-                  error: { type: "unknown", message: "failed" },
-                })
-
-          // Before any idle marker exists, a prompt's turn ends at the next prompt.
-          const first = yield* prompt("Edit the first file")
-          const firstStep = yield* step(write("first.txt", "first edited\n"), "recorded")
-          // Edits made while idle are not a turn's work, but a range spanning them still sees them.
-          yield* Effect.promise(write("manual.txt", "manual edited\n"))
-          const second = yield* prompt("Edit the second file")
-          yield* step(write("second.txt", "second edited\n"), "recorded")
-          expect(yield* diff()).toEqual([["second.txt", "modified", 1, 1]])
-          expect(yield* diff({ messageID: first })).toEqual([["first.txt", "modified", 1, 1]])
-
-          // Once markers exist, a turn spans a whole busy period, steers included; earlier history merges into the first one.
-          yield* idle("succeeded")
-          const third = yield* prompt("Add a third file")
-          yield* step(write("third.txt", "third\n"), "recorded")
-          const steer = yield* prompt("Also add a fourth file")
-          yield* step(write("fourth.txt", "fourth\n"), "recorded")
-          yield* idle("failed")
-          const busy = [
-            ["fourth.txt", "added", 1, 0],
-            ["third.txt", "added", 1, 0],
-          ]
-          expect(yield* diff()).toEqual(busy)
-          expect(yield* diff({ messageID: steer })).toEqual(busy)
-          expect(yield* diff({ messageID: second })).toEqual([
-            ["first.txt", "modified", 1, 1],
-            ["manual.txt", "modified", 1, 1],
-            ["second.txt", "modified", 1, 1],
-          ])
-          expect(yield* diff({ messageID: first, to: third })).toEqual([
-            ["first.txt", "modified", 1, 1],
-            ["fourth.txt", "added", 1, 0],
-            ["manual.txt", "modified", 1, 1],
-            ["second.txt", "modified", 1, 1],
-            ["third.txt", "added", 1, 0],
-          ])
-          const full = yield* sessions.diff({ sessionID: created.id, messageID: first })
-          expect(full[0]?.patch).toContain("-first\n+first edited\n")
-          expect(yield* diff({ messageID: steer, to: second }).pipe(Effect.flip)).toMatchObject({
-            _tag: "Session.TurnRangeError",
-            field: "to",
-          })
-          expect(yield* diff({ messageID: firstStep }).pipe(Effect.flip)).toMatchObject({
-            _tag: "Session.TurnRangeError",
-            field: "messageID",
-          })
-          expect(yield* diff({ messageID: SessionMessage.ID.create() }).pipe(Effect.flip)).toMatchObject({
-            _tag: "Session.MessageNotFoundError",
-          })
-
-          // A completed step without an end snapshot falls back to the last recorded end.
-          yield* prompt("Edit both files again")
-          yield* step(write("first.txt", "first edited twice\n"), "recorded")
-          yield* step(write("second.txt", "second edited twice\n"), "unrecorded")
-          yield* idle("succeeded")
-          expect(yield* diff()).toEqual([["first.txt", "modified", 1, 1]])
-
-          // Only a step still running in the active session compares against the working copy.
-          yield* prompt("Delete the manual file")
-          yield* step(() => fs.rm(path.join(directory, "manual.txt")), "running")
-          expect(yield* diff()).toEqual([])
-          const session = yield* sessions.get(created.id)
-          const live = yield* SessionDiff.turn(database.db, locations, { session, active: true, context: 0 })
-          expect(live.map(summarize)).toEqual([["manual.txt", "deleted", 0, 1]])
-
-          // Reverting removes later history, markers included; a fork keeps the copied turns.
-          yield* sessions.revert.stage({ sessionID: created.id, messageID: steer, files: false })
-          yield* sessions.revert.commit(created.id)
-          expect(yield* diff()).toEqual([["third.txt", "added", 1, 0]])
-          expect(yield* diff({ messageID: steer }).pipe(Effect.flip)).toMatchObject({
-            _tag: "Session.MessageNotFoundError",
-          })
-          const forked = yield* sessions.fork({ sessionID: created.id, boundary: { type: "through" } })
-          expect((yield* sessions.diff({ sessionID: forked.id, context: 0 })).map(summarize)).toEqual([
-            ["third.txt", "added", 1, 0],
-          ])
-        }).pipe(Effect.provide(LocationServiceMap.Service.get(created.location)))
-      }),
-    // Real Location/plugin startup and Git snapshots can exceed five seconds under CI load.
-    { timeout: 30_000 },
-  )
-})
@@ -140,6 +140,30 @@ describe("toSessionError", () => {
    })
  })

+  test("preserves provider configuration and initialization errors", () => {
+    const configuration = new ModelResolver.ModelConfigurationError({
+      providerID: Provider.ID.make("azure"),
+      modelID: ID.make("gpt-5.4-nano"),
+      package: "aisdk:@ai-sdk/azure",
+      detail: "Azure requires resourceName or baseURL",
+    })
+    expect(toSessionError(configuration)).toEqual({
+      type: "provider.no-route",
+      message: "Cannot initialize azure/gpt-5.4-nano: Azure requires resourceName or baseURL",
+    })
+    const initialization = new ModelResolver.ModelInitializationError({
+      providerID: Provider.ID.make("custom"),
+      modelID: ID.make("model"),
+      package: "@opencode/ai/providers/custom",
+      phase: "load",
+      detail: "Provider package @opencode/ai/providers/custom is broken",
+    })
+    expect(toSessionError(initialization)).toEqual({
+      type: "provider.no-route",
+      message: "Cannot initialize custom/model: Provider package @opencode/ai/providers/custom is broken",
+    })
+  })
+
  test("retries rate limits, provider-internal, transport, and unrecognized failures", () => {
    const eligible = [
      llm(new RateLimitError({ message: "rate" })),
@@ -561,9 +561,7 @@ describe("SessionRestart background recovery", () => {
        expect(yield* restarted.pendingBackground).toEqual([])
        expect(yield* SessionInbox.list(database.db, sessionID)).toHaveLength(delivered ? 0 : 1)
        yield* SessionInbox.promote(database.db, bus, sessionID, "steer")
-        // Recovery ends a busy period, so an idle marker follows the notification.
-        const messages = (yield* sessions.messages({ sessionID })).filter((message) => message.type !== "idle")
-        expect(messages).toMatchObject([
+        expect(yield* sessions.messages({ sessionID })).toMatchObject([
          {
            id: background.notificationID,
            type: "synthetic",
@@ -571,6 +569,7 @@ describe("SessionRestart background recovery", () => {
            metadata: { state: "completed" },
          },
        ])
+        expect(yield* sessions.messages({ sessionID })).toHaveLength(1)
      }),
    )
  }
@@ -1944,7 +1944,16 @@ describe("SessionRunnerLLM", () => {
    expect(yield* entries.list(sessionID)).toEqual([{ key: "nullable", value: null }])
  })

-  scenario("rejects API instruction entries larger than 8KB", function* () {
+  scenario("accepts API instruction entries up to 256 KiB", function* () {
+    const entries = yield* InstructionEntry.Service
+    const value = "x".repeat(InstructionEntry.MaxValueBytes - 2)
+
+    yield* entries.put({ sessionID, key: "large", value })
+
+    expect(yield* entries.list(sessionID)).toEqual([{ key: "large", value }])
+  })
+
+  scenario("rejects API instruction entries larger than 256 KiB", function* () {
    const entries = yield* InstructionEntry.Service

    const exit = yield* entries
@@ -22,7 +22,7 @@ it.live(
        Effect.provideService(
          HttpClient.HttpClient,
          HttpClient.make((request) => {
-            expect(request.url).toBe("https://registry.npmjs.org/@opencode-ai%2fcli/beta")
+            expect(request.url).toBe("https://registry.npmjs.org/@opencode%2fcli/beta")
            return Effect.succeed(HttpClientResponse.fromWeb(request, response))
          }),
        ),
@@ -65,7 +65,7 @@ posix(

 test("pins platform-specific artifacts and rejects unsafe inputs", () => {
  expect(RemoteCli.archiveUrl("linux-x64-baseline-musl", "2.0.0-beta.1")).toBe(
-    "https://registry.npmjs.org/@opencode-ai/cli-linux-x64-baseline-musl/-/cli-linux-x64-baseline-musl-2.0.0-beta.1.tgz",
+    "https://registry.npmjs.org/@opencode/cli-linux-x64-baseline-musl/-/cli-linux-x64-baseline-musl-2.0.0-beta.1.tgz",
  )
  expect(() => RemoteCli.installScript({ version: '2.0.0"; whoami', source: { type: "installer" } })).toThrow()
  expect(() => RemoteCli.archiveUrl("linux-x64;whoami", "2.0.0")).toThrow()
@@ -68,7 +68,7 @@ printf 'OPENCODE_REMOTE_TARGET=%s\\n' "$target"
 export function archiveUrl(target: string, version: string) {
  if (!/^(linux|darwin)-(x64-baseline|arm64)(-musl)?$/.test(target))
    throw new Failure({ code: "platform", detail: target })
-  return `https://registry.npmjs.org/@opencode-ai/cli-${target}/-/cli-${target}-${requireVersion(version)}.tgz`
+  return `https://registry.npmjs.org/@opencode/cli-${target}/-/cli-${target}-${requireVersion(version)}.tgz`
 }

 type Source = { type: "download"; url: string } | { type: "archive" } | { type: "installer"; binary?: string }
@@ -114,12 +114,12 @@ const Beta = Schema.Struct({ version: Schema.String.check(Schema.isPattern(/^0\.

 export const latestBeta = Effect.fn("RemoteCli.latestBeta")(function* () {
  const http = yield* HttpClient.HttpClient
-  const metadata = yield* http.get("https://registry.npmjs.org/@opencode-ai%2fcli/beta").pipe(
+  const metadata = yield* http.get("https://registry.npmjs.org/@opencode%2fcli/beta").pipe(
    Effect.flatMap(HttpClientResponse.filterStatusOk),
    Effect.flatMap(HttpClientResponse.schemaBodyJson(Beta)),
    Effect.timeout("30 seconds"),
    Effect.mapError(
-      () => new Failure({ code: "install", detail: "https://registry.npmjs.org/@opencode-ai%2fcli/beta" }),
+      () => new Failure({ code: "install", detail: "https://registry.npmjs.org/@opencode%2fcli/beta" }),
    ),
  )
  return metadata.version
@@ -9,6 +9,7 @@ export function createDesktopNotify(api: ElectronAPI): Platform["notify"] {
    const notification = new Notification(title, {
      body: description ?? "",
      icon: "https://opencode.ai/favicon-96x96-v3.png",
+      silent: true,
    })
    notification.onclick = () => {
      void api.showWindow()
@@ -1280,6 +1280,100 @@ flowchart TD
    ])
  })

+  test("expands & node groups into fan-in and fan-out edges", () => {
+    const diagram = parseMermaidFlowchartDiagram(`flowchart LR
+  N[Native] & M[Mapped] & O --> LM["LanguageModel"]
+  LM -->|prepare| REQ & LOG`)
+
+    expect(diagram.nodes).toEqual([
+      { id: "N", label: "Native", shape: "box" },
+      { id: "M", label: "Mapped", shape: "box" },
+      { id: "O", label: "O", shape: "box" },
+      { id: "LM", label: "LanguageModel", shape: "box" },
+      { id: "REQ", label: "REQ", shape: "box" },
+      { id: "LOG", label: "LOG", shape: "box" },
+    ])
+    expect(diagram.edges).toEqual([
+      { from: "N", to: "LM", label: "" },
+      { from: "M", to: "LM", label: "" },
+      { from: "O", to: "LM", label: "" },
+      { from: "LM", to: "REQ", label: "prepare" },
+      { from: "LM", to: "LOG", label: "prepare" },
+    ])
+  })
+
+  test("expands & groups on both sides of an edge and through a chain", () => {
+    const diagram = parseMermaidFlowchartDiagram(`flowchart LR
+  A & B --> C & D --> E`)
+
+    expect(diagram.edges).toEqual([
+      { from: "A", to: "C", label: "" },
+      { from: "A", to: "D", label: "" },
+      { from: "B", to: "C", label: "" },
+      { from: "B", to: "D", label: "" },
+      { from: "C", to: "E", label: "" },
+      { from: "D", to: "E", label: "" },
+    ])
+  })
+
+  test("declares every node of a bare & group inside the current subgraph", () => {
+    const diagram = parseMermaidFlowchartDiagram(`flowchart TD
+  subgraph Runtime
+    A[Alpha] & B[Beta]:::focus
+  end
+  A --> B`)
+
+    expect(diagram.nodes).toEqual([
+      { id: "A", label: "Alpha", shape: "box" },
+      { id: "B", label: "Beta", shape: "box" },
+    ])
+    expect(diagram.subgraphs?.[0]?.nodeIds).toEqual(["A", "B"])
+  })
+
+  test("keeps & inside quoted or bracketed labels as label text", () => {
+    const diagram = parseMermaidFlowchartDiagram(`flowchart LR
+  A["Fetch & parse"] & B[R&D] --> C[Done &amp; dusted]`)
+
+    expect(diagram.nodes).toEqual([
+      { id: "A", label: "Fetch & parse", shape: "box" },
+      { id: "B", label: "R&D", shape: "box" },
+      { id: "C", label: "Done & dusted", shape: "box" },
+    ])
+    expect(diagram.edges).toEqual([
+      { from: "A", to: "C", label: "" },
+      { from: "B", to: "C", label: "" },
+    ])
+  })
+
+  test("keeps & inside edge labels as label text", () => {
+    const diagram = parseMermaidFlowchartDiagram(`flowchart LR
+  X[a & b] -->|x & y| Y`)
+
+    expect(diagram.nodes.find((node) => node.id === "X")?.label).toBe("a & b")
+    expect(diagram.edges).toEqual([{ from: "X", to: "Y", label: "x & y" }])
+  })
+
+  test("rejects empty & group members", () => {
+    for (const statement of ["A & --> B", "& A --> B", "A --> B &", "A &"]) {
+      expect(() => parseMermaidFlowchartDiagram(`flowchart LR\n  ${statement}`)).toThrow(
+        `Unsupported syntax in flowchart diagram at line 2: "${statement}"`,
+      )
+    }
+  })
+
+  test("renders a fan-in expressed with & the same as separate edge statements", () => {
+    const grouped = renderFlowchartDiagram(`flowchart LR
+  N & M & O --> LM[LanguageModel] --> REQ[LLMRequest]`)
+    const separate = renderFlowchartDiagram(`flowchart LR
+  N --> LM[LanguageModel]
+  M --> LM
+  O --> LM
+  LM --> REQ[LLMRequest]`)
+
+    expect(grouped).toBe(separate)
+    expect(grouped).toContain("LanguageModel")
+  })
+
  test("parses chained undirected solid edges", () => {
    const diagram = parseMermaidFlowchartDiagram(`flowchart LR
  A --- B --- C`)
@@ -127,6 +127,41 @@ function stripNodeToken(token: string): string {
    .trim()
 }

+/** Split an `&`-joined node group, leaving `&` inside labels (brackets or quotes) untouched. */
+function splitNodeGroup(token: string): string[] {
+  const groups: string[] = []
+  const stack: string[] = []
+  let quote: '"' | "'" | undefined
+  let start = 0
+  const closes: Record<string, string> = { "[": "]", "(": ")", "{": "}" }
+
+  for (let index = 0; index < token.length; index++) {
+    const character = token[index]!
+    if (quote) {
+      if (character === quote && token[index - 1] !== "\\") quote = undefined
+      continue
+    }
+    if (character === '"' || character === "'") {
+      quote = character
+      continue
+    }
+    if (character in closes) {
+      stack.push(character)
+      continue
+    }
+    if (stack.length > 0 && character === closes[stack.at(-1)!]) {
+      stack.pop()
+      continue
+    }
+    if (stack.length === 0 && character === "&") {
+      groups.push(token.slice(start, index))
+      start = index + 1
+    }
+  }
+  groups.push(token.slice(start))
+  return groups
+}
+
 function edgeStyleFromArrow(...arrows: string[]): FlowchartEdgeStyle | undefined {
  if (arrows.some((arrow) => arrow.includes("=="))) return "thick"
  if (arrows.some((arrow) => arrow.includes("."))) return "dashed"
@@ -305,51 +340,57 @@ export function parseMermaidFlowchartDiagram(content: string): FlowchartDiagram

    const edgeOperators = parseEdgeOperators(line)
    if (edgeOperators.length > 0) {
-      const nodeTokens = [
+      // Each chain position may be an `&` group (`A & B --> C`), so endpoints are lists of node tokens.
+      const nodeGroups = [
        line.slice(0, edgeOperators[0]!.index),
        ...edgeOperators.map((operator, index) =>
          line.slice(operator.end, edgeOperators[index + 1]?.index ?? line.length),
        ),
-      ]
+      ].map((group) => splitNodeGroup(group).map(stripNodeToken))

-      if (nodeTokens.every((token) => stripNodeToken(token).length > 0)) {
-        const unsupportedEndpoint = nodeTokens.find((token, index) => {
-          const stripped = stripNodeToken(token)
+      if (nodeGroups.every((group) => group.every((token) => token.length > 0))) {
+        const unsupportedEndpoint = nodeGroups.find((group, index) => {
          const orderOnlyEndpoint = edgeOperators[index - 1]?.orderOnly || edgeOperators[index]?.orderOnly
-          return (
-            !(orderOnlyEndpoint && subgraphs.some((subgraph) => subgraph.id === stripped)) &&
-            !isSupportedNodeToken(stripped)
+          return group.some(
+            (stripped) =>
+              !(orderOnlyEndpoint && subgraphs.some((subgraph) => subgraph.id === stripped)) &&
+              !isSupportedNodeToken(stripped),
          )
        })
        if (unsupportedEndpoint) throw new MermaidSyntaxError("flowchart", source.lineNumber, line)
-        const chainNodeIds = nodeTokens.map((token, index) => {
-          const stripped = stripNodeToken(token)
+        const chainNodeIds = nodeGroups.map((group, index) => {
          const orderOnlyEndpoint = edgeOperators[index - 1]?.orderOnly || edgeOperators[index]?.orderOnly
-          if (orderOnlyEndpoint && subgraphs.some((subgraph) => subgraph.id === stripped)) return stripped
-          return ensureNode(nodes, stripped).id
+          return group.map((stripped) => {
+            if (orderOnlyEndpoint && subgraphs.some((subgraph) => subgraph.id === stripped)) return stripped
+            return ensureNode(nodes, stripped).id
+          })
        })
-        for (const nodeId of chainNodeIds) {
+        for (const nodeId of chainNodeIds.flat()) {
          if (nodes.has(nodeId)) addNodeToSubgraph(currentSubgraph, nodeId)
        }
        for (let index = 0; index < edgeOperators.length; index++) {
          const operator = edgeOperators[index]!
-          const edge = createEdge(
-            chainNodeIds[index]!,
-            chainNodeIds[index + 1]!,
-            operator.label,
-            operator.style,
-            operator.arrowhead,
-            operator.sourceArrowhead,
-          )
-          edges.push(operator.orderOnly ? { ...edge, orderOnly: true } : edge)
+          for (const from of chainNodeIds[index]!) {
+            for (const to of chainNodeIds[index + 1]!) {
+              const edge = createEdge(
+                from,
+                to,
+                operator.label,
+                operator.style,
+                operator.arrowhead,
+                operator.sourceArrowhead,
+              )
+              edges.push(operator.orderOnly ? { ...edge, orderOnly: true } : edge)
+            }
+          }
        }
        continue
      }
    }

-    if (isSupportedNodeToken(line)) {
-      const node = ensureNode(nodes, line)
-      addNodeToSubgraph(currentSubgraph, node.id)
+    const nodeGroup = splitNodeGroup(line)
+    if (nodeGroup.every(isSupportedNodeToken)) {
+      for (const token of nodeGroup) addNodeToSubgraph(currentSubgraph, ensureNode(nodes, stripNodeToken(token)).id)
      continue
    }

@@ -29,7 +29,7 @@ describe("parser diagnostics", () => {
  })

  test("does not partially parse unsupported flowchart syntax", () => {
-    for (const statement of ["A & B --> C", "A((Start)) --> B", "A-->B; B-->C"]) {
+    for (const statement of ["A & --> C", "A((Start)) --> B", "A-->B; B-->C"]) {
      expect(() => parseMermaidFlowchartDiagram(`flowchart LR\n  ${statement}`)).toThrow(MermaidSyntaxError)
    }
  })
@@ -19,6 +19,6 @@ export interface PermissionHooks {
  readonly evaluate: PermissionEvaluation
 }

-export type PermissionDomain = Pick<PermissionApi<unknown>, "list" | "get" | "reply"> & {
+export type PermissionDomain = Pick<PermissionApi<unknown>, "list" | "get" | "reply" | "rules"> & {
  readonly hook: Hooks<PermissionHooks>
 }
@@ -438,6 +438,7 @@ export function fromPromise(plugin: Plugin) {
            list: adaptApiMethod(PermissionEndpoints["session.permission.list"], host.permission.list),
            get: adaptApiMethod(PermissionEndpoints["session.permission.get"], host.permission.get),
            reply: adaptApiMethod(PermissionEndpoints["session.permission.reply"], host.permission.reply),
+            rules: adaptApiMethod(PermissionEndpoints["session.permission.rules"], host.permission.rules),
          },
          plugin: {
            list: adaptApiMethod(PluginEndpoints["plugin.list"], host.plugin.list),
@@ -19,6 +19,6 @@ export interface PermissionHooks {
  readonly evaluate: PermissionEvaluation
 }

-export type PermissionDomain = Pick<PermissionApi, "list" | "get" | "reply"> & {
+export type PermissionDomain = Pick<PermissionApi, "list" | "get" | "reply" | "rules"> & {
  readonly hook: Hooks<PermissionHooks>
 }
@@ -3242,152 +3242,6 @@
        "summary": "Get session context"
      }
    },
-    "/api/session/{sessionID}/diff": {
-      "get": {
-        "tags": ["session"],
-        "operationId": "v2.session.diff",
-        "parameters": [
-          {
-            "name": "sessionID",
-            "in": "path",
-            "schema": {
-              "type": "string",
-              "pattern": "^ses"
-            },
-            "required": true
-          },
-          {
-            "name": "messageID",
-            "in": "query",
-            "schema": {
-              "anyOf": [
-                {
-                  "type": "string",
-                  "pattern": "^msg_"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "User message whose turn to diff. Defaults to the turn of the newest user message."
-            },
-            "required": false
-          },
-          {
-            "name": "to",
-            "in": "query",
-            "schema": {
-              "anyOf": [
-                {
-                  "type": "string",
-                  "pattern": "^msg_"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "Later user message whose turn ends the range. Defaults to the turn of `messageID` alone."
-            },
-            "required": false
-          },
-          {
-            "name": "context",
-            "in": "query",
-            "schema": {
-              "anyOf": [
-                {
-                  "type": "string"
-                },
-                {
-                  "type": "null"
-                }
-              ],
-              "description": "Unchanged lines around each hunk. Omit for full-file patches."
-            },
-            "required": false
-          }
-        ],
-        "security": [],
-        "responses": {
-          "200": {
-            "description": "Success",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "type": "object",
-                  "properties": {
-                    "data": {
-                      "type": "array",
-                      "items": {
-                        "$ref": "#/components/schemas/FileDiff.Info"
-                      }
-                    }
-                  },
-                  "required": ["data"],
-                  "additionalProperties": false
-                }
-              }
-            }
-          },
-          "400": {
-            "description": "InvalidRequestError",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "anyOf": [
-                    {
-                      "$ref": "#/components/schemas/InvalidRequestErrorEncoded"
-                    },
-                    {
-                      "$ref": "#/components/schemas/InvalidRequestErrorEncoded"
-                    }
-                  ]
-                }
-              }
-            }
-          },
-          "401": {
-            "description": "UnauthorizedError",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "#/components/schemas/UnauthorizedErrorEncoded"
-                }
-              }
-            }
-          },
-          "404": {
-            "description": "MessageNotFoundError | SessionNotFoundError",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "anyOf": [
-                    {
-                      "$ref": "#/components/schemas/MessageNotFoundErrorEncoded"
-                    },
-                    {
-                      "$ref": "#/components/schemas/SessionNotFoundErrorEncoded"
-                    }
-                  ]
-                }
-              }
-            }
-          },
-          "500": {
-            "description": "UnknownError",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "#/components/schemas/UnknownErrorEncoded"
-                }
-              }
-            }
-          }
-        },
-        "description": "Structured per-file diffs of the files a turn changed. A turn runs from the first prompt after the session was last idle until its next idle marker, so prompts steered in while it was busy belong to the same turn; `to` extends the range through a later turn. Compares the range's first recorded snapshot with its last; a step still running in the active session compares against the working copy. Ranges that span a location change are rejected. In sessions without any idle marker, a prompt's turn spans until the next user message.",
-        "summary": "Diff session turns"
-      }
-    },
    "/api/session/{sessionID}/inbox": {
      "get": {
        "tags": ["session"],
@@ -18540,38 +18394,6 @@
        "required": ["type", "id", "time", "status", "reason", "summary", "recent"],
        "additionalProperties": false
      },
-      "Session.Message.Idle": {
-        "type": "object",
-        "properties": {
-          "id": {
-            "type": "string",
-            "pattern": "^msg_"
-          },
-          "metadata": {
-            "type": "object"
-          },
-          "time": {
-            "type": "object",
-            "properties": {
-              "created": {
-                "type": "number"
-              }
-            },
-            "required": ["created"],
-            "additionalProperties": false
-          },
-          "type": {
-            "type": "string",
-            "enum": ["idle"]
-          },
-          "outcome": {
-            "type": "string",
-            "enum": ["succeeded", "failed", "interrupted"]
-          }
-        },
-        "required": ["id", "time", "type", "outcome"],
-        "additionalProperties": false
-      },
      "Session.Message.Info": {
        "anyOf": [
          {
@@ -18603,9 +18425,6 @@
          },
          {
            "$ref": "#/components/schemas/Session.Message.Compaction"
-          },
-          {
-            "$ref": "#/components/schemas/Session.Message.Idle"
          }
        ]
      },
@@ -132,4 +132,21 @@ export const makePermissionGroup = <
          }),
        ),
    )
+    .add(
+      HttpApiEndpoint.put("session.permission.rules", "/api/session/:sessionID/permission/rules", {
+        params: { sessionID: Session.ID },
+        payload: Schema.Struct({ permissions: Permission.Ruleset }),
+        success: HttpApiSchema.NoContent,
+        error: SessionNotFoundError,
+      })
+        .middleware(sessionLocationMiddleware)
+        .annotateMerge(
+          OpenApi.annotations({
+            identifier: "v2.session.permission.rules",
+            summary: "Replace session permission rules",
+            description:
+              "Replace the session-scoped permission rules. Rules are evaluated after the agent's rules, and the last matching rule wins.",
+          }),
+        ),
+    )
    .annotateMerge(OpenApi.annotations({ title: "permission", description: "Experimental permission routes." }))
@@ -27,10 +27,10 @@ import {
 import { Agent } from "@opencode/schema/agent"
 import { Skill } from "@opencode/schema/skill"
 import { Model } from "@opencode/schema/model"
+import { Permission } from "@opencode/schema/permission"
 import { Location } from "@opencode/schema/location"
 import { SessionEvent } from "@opencode/schema/session-event"
 import { EventLog } from "@opencode/schema/event-log"
-import { FileDiff } from "@opencode/schema/file-diff"

 const ParentIDFilter = Schema.Union([
  Session.ID,
@@ -176,6 +176,7 @@ export const makeSessionGroup = <I extends HttpApiMiddleware.AnyId, S>(sessionLo
          model: Model.Ref.pipe(Schema.optional),
          location: Location.Ref.pipe(Schema.optional),
          metadata: Session.Metadata.pipe(Schema.optional),
+          permissions: Permission.Ruleset.pipe(Schema.optional),
        }),
        success: Schema.Struct({ data: Session.Info }),
      }).annotateMerge(
@@ -522,31 +523,6 @@ export const makeSessionGroup = <I extends HttpApiMiddleware.AnyId, S>(sessionLo
        }),
      ),
    )
-    .add(
-      HttpApiEndpoint.get("session.diff", "/api/session/:sessionID/diff", {
-        params: { sessionID: Session.ID },
-        query: Schema.Struct({
-          messageID: Schema.optional(SessionMessage.ID).annotate({
-            description: "User message whose turn to diff. Defaults to the turn of the newest user message.",
-          }),
-          to: Schema.optional(SessionMessage.ID).annotate({
-            description: "Later user message whose turn ends the range. Defaults to the turn of `messageID` alone.",
-          }),
-          context: Schema.NumberFromString.pipe(Schema.decodeTo(NonNegativeInt), Schema.optional).annotate({
-            description: "Unchanged lines around each hunk. Omit for full-file patches.",
-          }),
-        }),
-        success: Schema.Struct({ data: Schema.Array(FileDiff.Info) }),
-        error: [InvalidRequestError, MessageNotFoundError, SessionNotFoundError, UnknownError],
-      }).annotateMerge(
-        OpenApi.annotations({
-          identifier: "v2.session.diff",
-          summary: "Diff session turns",
-          description:
-            "Structured per-file diffs of the files a turn changed. A turn runs from the first prompt after the session was last idle until its next idle marker, so prompts steered in while it was busy belong to the same turn; `to` extends the range through a later turn. Compares the range's first recorded snapshot with its last; a step still running in the active session compares against the working copy. Ranges that span a location change are rejected. In sessions without any idle marker, a prompt's turn spans until the next user message.",
-        }),
-      ),
-    )
    .add(
      HttpApiEndpoint.get("session.inbox.list", "/api/session/:sessionID/inbox", {
        params: { sessionID: Session.ID },
@@ -27,7 +27,7 @@ export const Snapshot = Schema.Array(
 ).annotate({ identifier: "InstructionEntry.Snapshot" })
 export type Snapshot = typeof Snapshot.Type

-export const MaxValueBytes = 8 * 1024
+export const MaxValueBytes = 256 * 1024

 export class ValueTooLargeError extends Schema.TaggedError<ValueTooLargeError>()(
  "InstructionEntryValueTooLargeError",
@@ -25,6 +25,7 @@ import { TokenUsage } from "./token-usage.js"
 import { SessionInbox } from "./session-inbox.js"
 import { Project } from "./project.js"
 import { SessionFork } from "./session-fork.js"
+import { Permission } from "./permission.js"

 export { FileAttachment }

@@ -62,6 +63,7 @@ export const Created = Event.durable({
    model: Model.Ref.pipe(optional),
    /** Host-supplied annotations resolved at creation, including any inherited from a parent. */
    metadata: SessionMetadata.pipe(optional),
+    permissions: Permission.Ruleset.pipe(optional),
    version: Schema.String,
  },
 })
@@ -109,6 +111,16 @@ export const Renamed = Event.durable({
 })
 export type Renamed = typeof Renamed.Type

+export const PermissionsUpdated = Event.durable({
+  type: "session.permissions.updated",
+  ...options,
+  schema: {
+    ...Base,
+    permissions: Permission.Ruleset,
+  },
+})
+export type PermissionsUpdated = typeof PermissionsUpdated.Type
+
 export const Viewed = Event.durable({
  type: "session.viewed",
  ...options,
@@ -634,6 +646,7 @@ export const Definitions = Event.inventory(
  ModelSelected,
  Moved,
  Renamed,
+  PermissionsUpdated,
  Viewed,
  UsageUpdated,
  Deleted,
@@ -280,18 +280,6 @@ export const Compaction = Schema.Union([CompactionRunning, CompactionCompleted,
 )
 export type Compaction = CompactionRunning | CompactionCompleted | CompactionFailed

-/**
- * Marks the Session going idle: every step since the previous marker belongs to
- * one turn, including prompts steered in while it was busy. A shutdown does not
- * record one, since the resumed execution continues the same turn.
- */
-export interface Idle extends Schema.Schema.Type<typeof Idle> {}
-export const Idle = Schema.Struct({
-  ...Base,
-  type: Schema.tag("idle"),
-  outcome: Schema.Literals(["succeeded", "failed", "interrupted"]),
-}).annotate({ identifier: "Session.Message.Idle" })
-
 export const Info = Schema.Union([
  AgentSelected,
  ModelSelected,
@@ -303,7 +291,6 @@ export const Info = Schema.Union([
  Shell,
  Assistant,
  Compaction,
-  Idle,
 ]).annotate({ identifier: "Session.Message.Info" })
 export type Info =
  | AgentSelected
@@ -316,5 +303,4 @@ export type Info =
  | Shell
  | Assistant
  | Compaction
-  | Idle
 export type Type = Info["type"]
@@ -10,6 +10,7 @@ import { SessionEvent } from "./session-event.js"
 import { SessionID } from "./session-id.js"
 import { SessionMetadata } from "./session-metadata.js"
 import { Money } from "./money.js"
+import { Permission } from "./permission.js"
 import { TokenUsage } from "./token-usage.js"
 import { Revert } from "./session-revert.js"
 import { SessionFork } from "./session-fork.js"
@@ -54,6 +55,8 @@ export const Info = Schema.Struct({
  location: Location.Ref,
  subpath: RelativePath.pipe(optional),
  metadata: Metadata.pipe(optional),
+  /** Evaluated after the agent's rules; the last matching rule wins. */
+  permissions: Permission.Ruleset.pipe(optional),
  revert: Revert.pipe(optional),
 }).annotate({ identifier: "Session.Info" })

@@ -115,6 +115,7 @@ describe("public event manifest", () => {
        "session.model.selected.1",
        "session.moved.1",
        "session.renamed.1",
+        "session.permissions.updated.1",
        "session.viewed.1",
        "session.message.content.updated.1",
        "session.usage.recorded.1",
@@ -83,6 +83,15 @@ export const PermissionHandler = HttpApiBuilder.group(Api, "server.permission",
          return HttpApiSchema.NoContent.make()
        }),
      )
+      .handle(
+        "session.permission.rules",
+        Effect.fn(function* (ctx) {
+          yield* sessions
+            .setPermissions({ sessionID: ctx.params.sessionID, permissions: ctx.payload.permissions })
+            .pipe(Effect.catchTag("Session.NotFoundError", missingSession))
+          return HttpApiSchema.NoContent.make()
+        }),
+      )
      .handle(
        "permission.saved.list",
        Effect.fn(function* (ctx) {
@@ -1,6 +1,5 @@
 import { Session } from "@opencode/core/session"
-import type { Snapshot } from "@opencode/core/snapshot"
-import { MessageNotFoundError, SessionNotFoundError, UnknownError } from "@opencode/protocol/errors"
+import { SessionNotFoundError, UnknownError } from "@opencode/protocol/errors"
 import { Effect } from "effect"

 export function missingSession(error: Session.NotFoundError) {
@@ -10,14 +9,6 @@ export function missingSession(error: Session.NotFoundError) {
  })
 }

-export function missingMessage(error: Session.MessageNotFoundError) {
-  return new MessageNotFoundError({
-    sessionID: error.sessionID,
-    messageID: error.messageID,
-    message: `Message not found: ${error.messageID}`,
-  })
-}
-
 export function failedMessageDecode(error: Session.MessageDecodeError) {
  const ref = `err_${crypto.randomUUID().slice(0, 8)}`
  return Effect.logError("failed to decode session message").pipe(
@@ -27,16 +18,3 @@ export function failedMessageDecode(error: Session.MessageDecodeError) {
    ),
  )
 }
-
-/** Snapshot repositories are host state clients cannot repair, so surface only a log reference. */
-export function failedSnapshot(operation: string, sessionID: Session.ID) {
-  return (error: Snapshot.Error) => {
-    const ref = `err_${crypto.randomUUID().slice(0, 8)}`
-    return Effect.logError(`failed to ${operation}`, { cause: error }).pipe(
-      Effect.annotateLogs({ ref, sessionID }),
-      Effect.andThen(
-        Effect.fail(new UnknownError({ message: "Unexpected server error. Check server logs for details.", ref })),
-      ),
-    )
-  }
-}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
James Long	b087728684	refactor(tui): persist exact anchors and group expansion	2026-09-11 18:37:10 +00:00
James Long	4073d07a69	refactor(tui): render nested groups with message anchors	2026-09-11 11:52:36 +00:00
Brendan Allan	6bb4b35399	fix(app): preserve loopback server host (#44296 )	2026-09-11 06:41:38 +00:00
Brendan Allan	0ce1383030	fix(app): preserve file search results while loading (#43832 )	2026-09-11 06:13:32 +00:00
Brendan AllanandBrendonovich	010cd6131e	fix(app): merge adjacent file-changing tools (#44977 ) Co-authored-by: Brendonovich <Brendonovich@users.noreply.github.com>	2026-09-11 05:58:02 +00:00
Brendan Allan	c2348f8f69	fix(app): coordinate notifications across windows (#44613 )	2026-09-11 05:28:13 +00:00
Aiden Cline	71317ec7c9	fix(core): report provider initialization failures (#48433 )	2026-09-11 00:26:55 -05:00
opencode-agent[bot]andBrendonovich	4261fe749d	fix(desktop): repair SSH server updates (#48442 ) Co-authored-by: Brendonovich <14191578+Brendonovich@users.noreply.github.com>	2026-09-11 13:24:38 +08:00
Aiden Cline	9dd7149e75	feat(core): append comment guidance to Anthropic system prompt (#48444 )	2026-09-11 00:05:05 -05:00
Brendan Allan	0c0a431c9f	fix(ui): make comment cancel action ghost (#46742 )	2026-09-11 13:03:49 +08:00
Brendan Allan	3368e049d2	fix(app): refine home row hover actions (#47270 )	2026-09-11 04:39:26 +00:00
Aiden Cline	f0b5da1c11	feat(ai): type provider configuration errors (#48440 )	2026-09-10 23:29:55 -05:00
Aiden Cline	15c525dcfb	fix(merman): support & node groups in flowchart statements (#48425 )	2026-09-10 22:24:59 -05:00
James Long	4d12e01824	refactor(tui): project production subgroups through tree engine (#48399 )	2026-09-10 23:15:58 -04:00
James Long	70afbac80c	docs(www): add core CLI theme concepts (#48426 )	2026-09-10 23:13:53 -04:00
James Long	1c723c56fa	feat(tui): add recursive grouping tree (#48394 )	2026-09-10 21:40:23 -04:00
Aiden Cline	181428a2f3	fix(codemode): use Bun's wording for the missing atob/btoa argument (#48381 )	2026-09-10 20:08:36 -05:00
Dax Raad	9b1891fb7e	docs(cli): expand provider connections	2026-09-10 20:43:17 -04:00
Dax Raad	d4bf78b348	docs: add websearch guides	2026-09-10 20:30:58 -04:00
Dax Raad	d4ceffe787	docs: refresh v2 guides	2026-09-10 20:12:08 -04:00
Aiden Cline	872e38055e	fix(ai): normalize flat Responses stream errors (#48376 )	2026-09-10 18:23:32 -05:00
James Long	0c1dfa9186	refactor(tui): extract shared session rendering primitives (#48393 )	2026-09-10 18:07:14 -04:00
Dax Raad	8f4d706647	feat(cli): add command docs and simplify session list	2026-09-10 16:27:12 -04:00
Aiden Cline	929374cdfd	feat(core): parse JSON text results from MCP tools without an output schema (#48357 )	2026-09-10 15:20:13 -05:00
opencode-agent[bot]	cfa5ba700e	fix(stats): canonicalize DeepSeek Flash usage (#48373 )	2026-09-10 13:58:51 -05:00
Shoubhit Dash	45a2ed9a97	feat(core): per-session permission rules (#48351 )	2026-09-10 22:30:53 +05:30
opencode-agent[bot]andnexxeln	f6333546f8	fix(tui): disambiguate plugin actions (#48354 ) Co-authored-by: nexxeln <95541290+nexxeln@users.noreply.github.com>	2026-09-10 22:10:01 +05:30
opencode-agent[bot]andnexxeln	9e153ce7b3	fix(core): raise instruction entry limit (#48350 ) Co-authored-by: nexxeln <nexxeln@users.noreply.github.com>	2026-09-10 20:59:38 +05:30
Simon Klee	eb357f17cf	fix(tui): strip NUL characters before clipboard writes (#48337 )	2026-09-10 15:47:03 +02:00
Shoubhit Dash	573d76933f	fix(ai): make xAI Responses websockets work and enable them (#48318 )	2026-09-10 17:27:43 +05:30
usrnk1andBrendonovich	bb8194395a	feat(desktop): respect follow-up behavior for slash commands (#48169 ) Co-authored-by: Brendonovich <14191578+Brendonovich@users.noreply.github.com>	2026-09-10 19:24:23 +08:00