configure per-service model defaults for signed-in users

When signed in, default assistant to gpt-5.4, knowledge graph agents to
gpt-5.4-nano, inline task agent to gpt-5.4-mini, and meeting notes to
gpt-5.4. Add meetingNotesModel config field. Fix summarize_meeting to
use gateway provider when signed in.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/x/packages/core/src/agents/runtime.ts

@@ -850,13 +850,21 @@ export async function* streamAgent({
     const tools = await buildTools(agent);
 
     // set up provider + model
-    const provider = await isSignedIn()
+    const signedIn = await isSignedIn();
+    const provider = signedIn
         ? await getGatewayProvider()
         : createProvider(modelConfig.provider);
     const knowledgeGraphAgents = ["note_creation", "email-draft", "meeting-prep", "labeling_agent", "note_tagging_agent", "agent_notes_agent"];
-    const modelId = (knowledgeGraphAgents.includes(state.agentName!) && modelConfig.knowledgeGraphModel)
-        ? modelConfig.knowledgeGraphModel
-        : modelConfig.model;
+    const isKgAgent = knowledgeGraphAgents.includes(state.agentName!);
+    const isInlineTaskAgent = state.agentName === "inline_task_agent";
+    const defaultModel = signedIn ? "gpt-5.4" : modelConfig.model;
+    const defaultKgModel = signedIn ? "gpt-5.4-nano" : defaultModel;
+    const defaultInlineTaskModel = signedIn ? "gpt-5.4-mini" : defaultModel;
+    const modelId = isInlineTaskAgent
+        ? defaultInlineTaskModel
+        : (isKgAgent && modelConfig.knowledgeGraphModel)
+            ? modelConfig.knowledgeGraphModel
+            : isKgAgent ? defaultKgModel : defaultModel;
     const model = provider.languageModel(modelId);
     logger.log(`using model: ${modelId}`);
 

apps/x/packages/core/src/knowledge/summarize_meeting.ts

@@ -4,6 +4,8 @@ import { generateText } from 'ai';
 import container from '../di/container.js';
 import type { IModelConfigRepo } from '../models/repo.js';
 import { createProvider } from '../models/models.js';
+import { isSignedIn } from '../account/account.js';
+import { getGatewayProvider } from '../models/gateway.js';
 import { WorkDir } from '../config/config.js';
 
 const CALENDAR_SYNC_DIR = path.join(WorkDir, 'calendar_sync');
@@ -137,8 +139,13 @@ function loadCalendarEventContext(calendarEventJson: string): string {
 export async function summarizeMeeting(transcript: string, meetingStartTime?: string, calendarEventJson?: string): Promise<string> {
     const repo = container.resolve<IModelConfigRepo>('modelConfigRepo');
     const config = await repo.getConfig();
-    const provider = createProvider(config.provider);
-    const model = provider.languageModel(config.model);
+    const signedIn = await isSignedIn();
+    const provider = signedIn
+        ? await getGatewayProvider()
+        : createProvider(config.provider);
+    const modelId = config.meetingNotesModel
+        || (signedIn ? "gpt-5.4" : config.model);
+    const model = provider.languageModel(modelId);
 
     // If a specific calendar event was linked, use it directly.
     // Otherwise fall back to scanning events within ±3 hours.

apps/x/packages/core/src/models/repo.ts

@@ -51,6 +51,7 @@ export class FSModelConfigRepo implements IModelConfigRepo {
             model: config.model,
             models: config.models,
             knowledgeGraphModel: config.knowledgeGraphModel,
+            meetingNotesModel: config.meetingNotesModel,
         };
 
         const toWrite = { ...config, providers: existingProviders };

apps/x/packages/shared/src/models.ts

@@ -12,4 +12,5 @@ export const LlmModelConfig = z.object({
   model: z.string(),
   models: z.array(z.string()).optional(),
   knowledgeGraphModel: z.string().optional(),
+  meetingNotesModel: z.string().optional(),
 });