unify model selection

web/src/lib/locales/zh-CN.ts

@@ -46,7 +46,7 @@ export default {
   'session.item.path': '路径',
   'session.item.agent': '代理',
   'session.item.model': '模型',
-  'session.item.modelMode': '模型',
+  'session.item.modelMode': '模式',
   'session.item.worktree': '工作树',
   'session.item.pending': '待处理',
   'session.item.thinking': '思考中',

web/src/lib/sessionModelLabel.test.ts

@@ -0,0 +1,22 @@
+import { describe, expect, it } from 'vitest'
+import { getSessionModelLabel } from './sessionModelLabel'
+
+describe('getSessionModelLabel', () => {
+    it('prefers the explicit session model', () => {
+        expect(getSessionModelLabel({ model: 'gpt-5.4', modelMode: 'default' })).toEqual({
+            key: 'session.item.model',
+            value: 'gpt-5.4'
+        })
+    })
+
+    it('falls back to Claude model mode when no explicit model exists', () => {
+        expect(getSessionModelLabel({ modelMode: 'opus' })).toEqual({
+            key: 'session.item.modelMode',
+            value: 'Opus'
+        })
+    })
+
+    it('returns null when neither model nor mode is available', () => {
+        expect(getSessionModelLabel({})).toBeNull()
+    })
+})

web/src/lib/sessionModelLabel.ts

@@ -0,0 +1,28 @@
+import { getModelModeLabel } from '@hapi/protocol'
+import type { Session, SessionSummary } from '@/types/api'
+
+type SessionModelSource = Pick<Session, 'model' | 'modelMode'> | Pick<SessionSummary, 'model' | 'modelMode'>
+
+export type SessionModelLabel = {
+    key: 'session.item.model' | 'session.item.modelMode'
+    value: string
+}
+
+export function getSessionModelLabel(session: SessionModelSource): SessionModelLabel | null {
+    const explicitModel = typeof session.model === 'string' ? session.model.trim() : ''
+    if (explicitModel) {
+        return {
+            key: 'session.item.model',
+            value: explicitModel
+        }
+    }
+
+    if (session.modelMode) {
+        return {
+            key: 'session.item.modelMode',
+            value: getModelModeLabel(session.modelMode)
+        }
+    }
+
+    return null
+}