refactor(agent): own model selection on each agent

packages/api/session-controller/src/agent.ts

@@ -5,7 +5,7 @@ import { mkdir } from 'node:fs/promises'
 import type { Context } from '@deepseek-ai/cordis'
 import type { Agent, AgentOptions, AgentSetup } from '@deepseek-ai/dsh-agent'
 import type {} from '@deepseek-ai/dsh-agent-default-model'
-import * as ModelSwitchNotice from '@deepseek-ai/dsh-agent-model/notice'
+import { installModelSelection } from '@deepseek-ai/dsh-agent'
 import type {} from '@deepseek-ai/dsh-agent-preset-registry'
 import { brandString } from '@deepseek-ai/dsh-brand'
 import type { Session, SessionId } from '@deepseek-ai/dsh-session'
@@ -306,13 +306,13 @@ export class ApiSessionAgentController {
   async composeAgent(presetId: string | undefined): Promise<ApiSessionComposition> {
     const presets = this.ctx.get('agentPresets')
     if (presets === undefined) {
-      return { setup: async (agentCtx) => { await agentCtx.plugin(ModelSwitchNotice) } }
+      return { setup: (agentCtx) => { installModelSelection(agentCtx) } }
     }
     const resolvedId = (await presets.resolve(presetId)).id
     return {
       agentPreset: resolvedId,
       setup: async (agentCtx) => {
-        await agentCtx.plugin(ModelSwitchNotice)
+        installModelSelection(agentCtx)
         await presets.mount(agentCtx, resolvedId)
       },
     }

packages/api/session-controller/src/commands.ts

@@ -173,7 +173,7 @@ export class SessionCommandController {
             ? {}
             : { reasoningEffort: resolved.reasoningEffort }),
         }
-        this.ctx.agentModel.select(agent, selected)
+        agent.model.select(selected)
         void this.ctx.agentDefaultModel.saveSelection(selected).catch((error: unknown) => {
           this.ctx.logger.warn(
             `session-controller: model selection changed for the Session but the default was not saved: ${String(error)}`,
@@ -323,7 +323,7 @@ export class SessionCommandController {
     const admit = async (): Promise<SessionPromptValue> => {
       try {
         if (hasImage) {
-          const current = this.ctx.agentModel.resolveForNextStep(agent)
+          const current = agent.model.current()
           if (current !== undefined) {
             const model = await this.ctx.llm.resolveModelInfo(current.provider, current.model)
             if (model.inputModalities !== undefined && !model.inputModalities.includes('image')) {

packages/api/session-controller/src/index.ts

@@ -3,7 +3,6 @@
 import { hostname } from 'node:os'
 import { resolve } from 'node:path'
 import type { Agent } from '@deepseek-ai/dsh-agent'
-import type {} from '@deepseek-ai/dsh-agent-model'
 import type {} from '@deepseek-ai/dsh-fs'
 import { Context, Service } from '@deepseek-ai/cordis'
 import z from '@deepseek-ai/schemastery'
@@ -127,7 +126,6 @@ export class SessionController extends TypertRemoteService {
     'remoteAccess',
     'sessions',
     'sessionProjections',
-    'agentModel',
     'sessionQuery',
     'typert',
     'workspaceRegistry',

packages/api/session-controller/src/types.ts

@@ -1,6 +1,6 @@
 /** Browser-safe request, result, and lifecycle vocabulary for the Session Remote service. */
 
-import type {} from '@deepseek-ai/dsh-agent-model/types'
+import type {} from '@deepseek-ai/dsh-agent/types'
 import type { NativeFileApplication } from '@deepseek-ai/dsh-native-command/types'
 import type {
   AttachmentIdType, ImageAttachmentLimits, ImageAttachmentRef, ImageMediaType,