feat(web): align the model catalog with the pi-ai provider form

Both editors live in `ui-models` and list the same thing, so they now share
one row shape rather than diverging when #1368 lands: a bordered entry per
model, id and display name on the row, and the capacities behind the row's
own disclosure. The context window is joined there by the per-model output
cap the adapter just gained; both read a decimal K/M suffix.

The shared class names carry this file's token spellings, not that branch's.
`--dsw-alias-border-subtle`, `--dsw-alias-text-tertiary`, and
`--dsw-alias-text-primary` are undeclared, so they resolve to the light-mode
literals in their fallback slots — the defect this section was moved off. A
styles test now rejects any `--dsw-*` name the token sheet does not declare,
so the next editor to name one fails instead of shipping a light-only
surface.

The keystroke buffer is now per capacity field rather than per row, since a
row holds two of them.

apps/web/tests/onboarding-deepseek-config.e2e.ts

@@ -173,12 +173,15 @@ describe.skipIf(MODE === 'record')('web e2e: first-run DeepSeek credential setup
     await deepSeek.waitFor({ timeout: 10_000 })
     await deepSeek.locator('xpath=ancestor::li').getByRole('button', { name: '编辑' }).click()
     await settings.getByText('自定义设置').click()
-    await settings.getByRole('button', { name: '删除模型' }).first().click()
+    await settings.getByRole('button', { name: /删除模型/ }).first().click()
     await settings.getByRole('button', { name: '添加模型' }).click()
     const customModelId = settings.getByLabel('模型 ID 2')
     await customModelId.fill('private-preview')
     await settings.getByLabel('显示名称 2').fill('Private Preview')
+    // Capacities live behind the row's own disclosure, as in the pi-ai form.
+    await settings.getByRole('button', { name: '容量 2' }).click()
     await settings.getByLabel('上下文窗口 2').fill('131072')
+    await settings.getByLabel('最大输出 token 数 2').fill('64K')
 
     const modelEditor = await captureStableAria(page, '[role="dialog"]', scaffold.workspaceCwd)
     await compareOrRefreshGolden(MODELS_EXPECTED, modelEditor, MODE)
@@ -190,6 +193,7 @@ describe.skipIf(MODE === 'record')('web e2e: first-run DeepSeek credential setup
     expect(document).toContain('id: private-preview')
     expect(document).toContain('name: Private Preview')
     expect(document).toContain('contextWindow: 131072')
+    expect(document).toContain('maxTokens: 64000')
     expect(document).not.toContain('id: deepseek-v4-flash')
 
     await page.keyboard.press('Escape')

apps/web/tests/snapshots/onboarding-deepseek-config/models.expected.md

@@ -32,26 +32,34 @@
         - region "模型目录":
           - text: 模型目录 已自定义模型目录
           - button "恢复默认模型"
-          - textbox "模型 ID 1": deepseek-v4-pro
+          - textbox "模型 ID 1":
+            - /placeholder: 模型 ID
+            - text: deepseek-v4-pro
           - textbox "显示名称 1":
-            - /placeholder: 留空时使用模型 ID
+            - /placeholder: 显示名称
             - text: DeepSeek-V4-Pro
-          - textbox "上下文窗口 1":
-            - /placeholder: 1M
-            - text: 1M
-          - button "删除模型":
+          - button "容量 1":
             - img
-            - text: 删除模型
-          - textbox "模型 ID 2": private-preview
+          - button "删除模型 1":
+            - img
+          - textbox "模型 ID 2":
+            - /placeholder: 模型 ID
+            - text: private-preview
           - textbox "显示名称 2":
-            - /placeholder: 留空时使用模型 ID
+            - /placeholder: 显示名称
             - text: Private Preview
+          - button "容量 2" [expanded]:
+            - img
+          - button "删除模型 2":
+            - img
+          - text: 上下文窗口
           - textbox "上下文窗口 2":
             - /placeholder: 1M
             - text: "131072"
-          - button "删除模型":
-            - img
-            - text: 删除模型
+          - text: 最大输出 token 数
+          - textbox "最大输出 token 数 2":
+            - /placeholder: 256K
+            - text: 64K
           - button "添加模型":
             - img
             - text: 添加模型