deps(ai): migrate the Vercel AI SDK from 6 to 7

package.json

@@ -119,11 +119,11 @@
     "rather than in app.asar."
   ],
   "devDependencies": {
-    "@ai-sdk/anthropic": "^3.0.125",
-    "@ai-sdk/google": "^3.0.129",
-    "@ai-sdk/openai": "^3.0.121",
-    "@ai-sdk/openai-compatible": "^2.0.80",
-    "@ai-sdk/provider": "^3.0.18",
+    "@ai-sdk/anthropic": "^4.0.69",
+    "@ai-sdk/google": "^4.0.86",
+    "@ai-sdk/openai": "^4.0.81",
+    "@ai-sdk/openai-compatible": "^3.0.60",
+    "@ai-sdk/provider": "^4.0.20",
     "@dagrejs/dagre": "^1.1.8",
     "@dnd-kit/core": "^6.3.1",
     "@dnd-kit/sortable": "^10.0.0",
@@ -165,7 +165,7 @@
     "@types/turndown": "^5.0.6",
     "@vitejs/plugin-react": "^5.1.2",
     "@xyflow/react": "^12.10.0",
-    "ai": "^6.0.297",
+    "ai": "^7.0.123",
     "autoprefixer": "^10.4.23",
     "cheerio": "^1.2.0",
     "class-variance-authority": "^0.7.1",

src/main/models/ModelClient.ts

@@ -5,7 +5,7 @@
  * 提供对话流式生成与 embedding 能力。业务代码只依赖它，不感知厂商。
  */
 
-import { embed, embedMany, streamText } from 'ai'
+import { embed, embedMany, streamText, toUIMessageStream } from 'ai'
 import type { AsyncIterableStream, LanguageModel, LanguageModelUsage, UIMessageChunk } from 'ai'
 import type { SharedV2ProviderOptions } from '@ai-sdk/provider'
 import type { APIMessage, ChatTokenUsage } from '../../shared/types/chat'
@@ -119,6 +119,12 @@ export class ModelClient {
 
     const result = streamText({
       model: this.getAIModel(),
+      // KnowNote puts the retrieved context (and the title-generation prompt) into
+      // the history as a `system` message. AI SDK 7 rejects those by default, and
+      // it does not throw: the answer comes back empty. Every message here is
+      // built by this app, so the untrusted-injection case the default guards
+      // against does not apply.
+      allowSystemInMessages: true,
       messages: toModelMessages(messages),
       temperature: DEFAULT_TEMPERATURE,
       // Only when the connection asks for a ceiling. Absent means the model's own
@@ -135,7 +141,10 @@ export class ModelClient {
     })
 
     return {
-      events: result.toUIMessageStream({
+      // The stateless helper, not `result.toUIMessageStream`: the result method is
+      // deprecated in v7 and logs a warning on every turn.
+      events: toUIMessageStream({
+        stream: result.stream,
         sendReasoning: true,
         // The SDK replaces a provider error with a generic sentence by default; the
         // reader is owed the real one, which is what the transcript has always shown.

src/main/models/protocols/googleGenerativeAi.ts

@@ -4,7 +4,7 @@
  * Google Generative AI (Gemini) API，含 embedding 端点。
  */
 
-import { createGoogleGenerativeAI } from '@ai-sdk/google'
+import { createGoogle } from '@ai-sdk/google'
 import type { EmbeddingModel, LanguageModel } from 'ai'
 import type { ModelConnection } from '../../../shared/types/connection'
 import type { ProtocolAdapter } from './types'
@@ -13,7 +13,7 @@ import { listGoogleModels } from './modelListing'
 const PROVIDER_OPTIONS_KEY = 'google'
 
 function createProvider(connection: ModelConnection) {
-  return createGoogleGenerativeAI({
+  return createGoogle({
     baseURL: connection.baseUrl,
     apiKey: connection.apiKey
   })