diff --git a/apps/web/tests/snapshots/agent-preset-authoring/created.expected.md b/apps/web/tests/snapshots/agent-preset-authoring/created.expected.md
index aece772fe4..b26cba28f4 100644
--- a/apps/web/tests/snapshots/agent-preset-authoring/created.expected.md
+++ b/apps/web/tests/snapshots/agent-preset-authoring/created.expected.md
@@ -10,9 +10,9 @@
     - button "Agent 预设":
       - img
       - text: Agent 预设
-    - button "插件":
+    - button "插件配置":
       - img
-      - text: 插件
+      - text: 插件配置
   - button "打开配置文件"
   - button "关闭":
     - img
diff --git a/apps/web/tests/snapshots/agent-preset-authoring/damaged.expected.md b/apps/web/tests/snapshots/agent-preset-authoring/damaged.expected.md
index 7620e679c8..14a6337736 100644
--- a/apps/web/tests/snapshots/agent-preset-authoring/damaged.expected.md
+++ b/apps/web/tests/snapshots/agent-preset-authoring/damaged.expected.md
@@ -10,9 +10,9 @@
     - button "Agent 预设":
       - img
       - text: Agent 预设
-    - button "插件":
+    - button "插件配置":
       - img
-      - text: 插件
+      - text: 插件配置
   - button "打开配置文件"
   - button "关闭":
     - img
diff --git a/apps/web/tests/snapshots/agent-preset-authoring/section.expected.md b/apps/web/tests/snapshots/agent-preset-authoring/section.expected.md
index dade3d7b84..7c35b40786 100644
--- a/apps/web/tests/snapshots/agent-preset-authoring/section.expected.md
+++ b/apps/web/tests/snapshots/agent-preset-authoring/section.expected.md
@@ -10,9 +10,9 @@
     - button "Agent 预设":
       - img
       - text: Agent 预设
-    - button "插件":
+    - button "插件配置":
       - img
-      - text: 插件
+      - text: 插件配置
   - button "打开配置文件"
   - button "关闭":
     - img
diff --git a/apps/web/tests/snapshots/models-settings/configured.expected.md b/apps/web/tests/snapshots/models-settings/configured.expected.md
index 3b57d5ac6f..e4fb6e13e8 100644
--- a/apps/web/tests/snapshots/models-settings/configured.expected.md
+++ b/apps/web/tests/snapshots/models-settings/configured.expected.md
@@ -10,9 +10,9 @@
     - button "Agent 预设":
       - img
       - text: Agent 预设
-    - button "插件":
+    - button "插件配置":
       - img
-      - text: 插件
+      - text: 插件配置
   - button "打开配置文件"
   - button "关闭":
     - img
diff --git a/apps/web/tests/snapshots/models-settings/declared.expected.md b/apps/web/tests/snapshots/models-settings/declared.expected.md
index dd3f03776f..b126a5025b 100644
--- a/apps/web/tests/snapshots/models-settings/declared.expected.md
+++ b/apps/web/tests/snapshots/models-settings/declared.expected.md
@@ -10,9 +10,9 @@
     - button "Agent 预设":
       - img
       - text: Agent 预设
-    - button "插件":
+    - button "插件配置":
       - img
-      - text: 插件
+      - text: 插件配置
   - button "打开配置文件"
   - button "关闭":
     - img
diff --git a/apps/web/tests/snapshots/models-settings/empty.expected.md b/apps/web/tests/snapshots/models-settings/empty.expected.md
index 16cc93581b..5a1dba54ee 100644
--- a/apps/web/tests/snapshots/models-settings/empty.expected.md
+++ b/apps/web/tests/snapshots/models-settings/empty.expected.md
@@ -10,9 +10,9 @@
     - button "Agent 预设":
       - img
       - text: Agent 预设
-    - button "插件":
+    - button "插件配置":
       - img
-      - text: 插件
+      - text: 插件配置
   - button "打开配置文件"
   - button "关闭":
     - img
diff --git a/apps/web/tests/snapshots/onboarding-deepseek-config/models.expected.md b/apps/web/tests/snapshots/onboarding-deepseek-config/models.expected.md
index b5f25aaaa6..2624f4db70 100644
--- a/apps/web/tests/snapshots/onboarding-deepseek-config/models.expected.md
+++ b/apps/web/tests/snapshots/onboarding-deepseek-config/models.expected.md
@@ -10,9 +10,9 @@
     - button "Agent 预设":
       - img
       - text: Agent 预设
-    - button "插件":
+    - button "插件配置":
       - img
-      - text: 插件
+      - text: 插件配置
   - button "打开配置文件"
   - button "关闭":
     - img
diff --git a/apps/web/tests/snapshots/plugin-config/section.expected.md b/apps/web/tests/snapshots/plugin-config/section.expected.md
index 54ef09851f..7d10d05cd1 100644
--- a/apps/web/tests/snapshots/plugin-config/section.expected.md
+++ b/apps/web/tests/snapshots/plugin-config/section.expected.md
@@ -10,25 +10,25 @@
     - button "Agent 预设":
       - img
       - text: Agent 预设
-    - button "插件":
+    - button "插件配置":
       - img
-      - text: 插件
+      - text: 插件配置
   - button "打开配置文件"
   - button "关闭":
     - img
     - text: 关闭
   - heading "插件配置" [level=2]
-  - paragraph: 本部署所组装插件自己拥有的设置。你在这里设的值会覆盖组装默认值，并在下一次使用时生效。
+  - paragraph: 配置本部署已安装的插件。
   - list:
     - listitem:
-      - button "终端 限制 agent 运行的每一条命令。":
-        - img
+      - 'button "展开设置: 终端"':
         - text: 终端 限制 agent 运行的每一条命令。
-    - listitem:
-      - button "Agent 循环 Agent 如何派发工具调用。":
         - img
+    - listitem:
+      - 'button "展开设置: Agent 循环"':
         - text: Agent 循环 Agent 如何派发工具调用。
-    - listitem:
-      - button "网页搜索 DeepSeek 搜索提供方。":
         - img
+    - listitem:
+      - 'button "展开设置: 网页搜索"':
         - text: 网页搜索 DeepSeek 搜索提供方。
+        - img
diff --git a/apps/web/tests/snapshots/settings-chrome/dialog.expected.md b/apps/web/tests/snapshots/settings-chrome/dialog.expected.md
index 3ac0245395..914293aee3 100644
--- a/apps/web/tests/snapshots/settings-chrome/dialog.expected.md
+++ b/apps/web/tests/snapshots/settings-chrome/dialog.expected.md
@@ -10,9 +10,9 @@
     - button "Agent 预设":
       - img
       - text: Agent 预设
-    - button "插件":
+    - button "插件配置":
       - img
-      - text: 插件
+      - text: 插件配置
   - button "打开配置文件"
   - button "关闭":
     - img
diff --git a/packages/client/ui-plugin-config/package.json b/packages/client/ui-plugin-config/package.json
index f3a9c04e62..61cec64110 100644
--- a/packages/client/ui-plugin-config/package.json
+++ b/packages/client/ui-plugin-config/package.json
@@ -67,5 +67,8 @@
     "lib/invariant.js",
     "lib/client.js",
     "lib/types/**/*.d.ts"
-  ]
+  ],
+  "dependencies": {
+    "clsx": "^2.0.0"
+  }
 }
diff --git a/packages/client/ui-plugin-config/src/client/AgentLoopCard.tsx b/packages/client/ui-plugin-config/src/client/AgentLoopCard.tsx
index 99790467dc..1e47453eff 100644
--- a/packages/client/ui-plugin-config/src/client/AgentLoopCard.tsx
+++ b/packages/client/ui-plugin-config/src/client/AgentLoopCard.tsx
@@ -1,6 +1,5 @@
 /** The agent-loop plugin's card: how many tool calls may run at once. */
 
-import { useState } from 'react'
 import type { SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
 import type { InjectFace, PropsLocale, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
 import { NumberField } from './fields.tsx'
@@ -34,17 +33,14 @@ export type AgentLoopCardProps =
 export function AgentLoopCard(props: AgentLoopCardProps) {
   const { t } = props
   const state = props.useAgentLoopCard(snapshot => snapshot)
-  const [open, setOpen] = useState(false)
   const disabled = !state.writable
   return (
     <PluginCard
-      title={t('agentLoopTitle')}
-      description={t('agentLoopDescription')}
+      t={t}
+      titleKey="agentLoopTitle"
+      descriptionKey="agentLoopDescription"
       available={state.available}
-      open={open}
-      onToggle={() => { setOpen(!open) }}
       readOnly={disabled}
-      readOnlyLabel={t('readOnly')}
     >
       <NumberField
         id="plugin-config-agent-loop-parallel"
diff --git a/packages/client/ui-plugin-config/src/client/BashCard.tsx b/packages/client/ui-plugin-config/src/client/BashCard.tsx
index 7291ed18e8..c31ec80525 100644
--- a/packages/client/ui-plugin-config/src/client/BashCard.tsx
+++ b/packages/client/ui-plugin-config/src/client/BashCard.tsx
@@ -1,6 +1,5 @@
 /** The shell plugin's card: the limits every command the agent runs is bound by. */
 
-import { useState } from 'react'
 import type { SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
 import type { InjectFace, PropsLocale, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
 import { NumberField } from './fields.tsx'
@@ -38,17 +37,14 @@ export type BashCardProps =
 export function BashCard(props: BashCardProps) {
   const { t } = props
   const state = props.useBashCard(snapshot => snapshot)
-  const [open, setOpen] = useState(false)
   const disabled = !state.writable
   return (
     <PluginCard
-      title={t('bashTitle')}
-      description={t('bashDescription')}
+      t={t}
+      titleKey="bashTitle"
+      descriptionKey="bashDescription"
       available={state.available}
-      open={open}
-      onToggle={() => { setOpen(!open) }}
       readOnly={disabled}
-      readOnlyLabel={t('readOnly')}
     >
       <NumberField
         id="plugin-config-bash-timeout"
diff --git a/packages/client/ui-plugin-config/src/client/PluginCard.module.css b/packages/client/ui-plugin-config/src/client/PluginCard.module.css
index 6a63962926..9374f71317 100644
--- a/packages/client/ui-plugin-config/src/client/PluginCard.module.css
+++ b/packages/client/ui-plugin-config/src/client/PluginCard.module.css
@@ -1,35 +1,86 @@
-/* Plugin card: one expandable row per plugin, its body holding the controls. */
+/* Plugin card: a header that names the plugin, disclosing its controls in place. */
 
 .card {
   list-style: none;
-  border-bottom: 1px solid var(--dsw-alias-border-l2);
+  border: 1px solid var(--dsw-alias-border-l2);
+  border-radius: 12px;
+  background: var(--dsw-alias-bg-layer-3);
+  transition: border-color .16s, background .16s;
 }
 
-.row {
-  padding: 16px 0;
+.card:hover {
+  border-color: var(--dsw-alias-label-dimmed);
 }
 
-.title {
-  font-size: 14px;
-  font-weight: 400;
-  line-height: 22px;
+/* An open card reads as the one being worked on, not merely taller. */
+.cardOpen {
+  background: var(--dsw-alias-bg-layer-2);
+  border-color: var(--dsw-alias-label-dimmed);
+}
+
+.header {
+  width: 100%;
+  appearance: none;
+  border: 0;
+  background: none;
+  font: inherit;
+  color: inherit;
+  text-align: left;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 14px 16px;
+  border-radius: 12px;
+}
+
+.header:focus-visible {
+  outline: 2px solid var(--dsw-alias-brand-primary);
+  outline-offset: -2px;
+}
+
+/* Name over description: the description is what tells two plugins apart, so
+   it gets its own line rather than trailing the name. */
+.headText {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.name {
+  font-size: 15px;
+  font-weight: 600;
+  line-height: 1.4;
   color: var(--dsw-alias-label-primary);
 }
 
 .description {
-  font-size: 12px;
-  font-weight: 400;
-  line-height: 18px;
+  font-size: 13px;
+  line-height: 1.5;
   color: var(--dsw-alias-label-tertiary);
 }
 
+.chevron {
+  flex: none;
+  color: var(--dsw-alias-label-tertiary);
+  transition: transform .16s;
+}
+
+.chevronOpen {
+  transform: rotate(180deg);
+}
+
 .body {
-  padding: 0 0 8px 24px;
+  border-top: 1px solid var(--dsw-alias-border-l2);
+  margin: 0 16px;
+  padding-bottom: 8px;
 }
 
 .readOnly {
-  margin: 0 0 8px;
+  margin: 12px 0 0;
   font-size: 12px;
-  line-height: 18px;
+  line-height: 1.5;
   color: var(--dsw-alias-label-tertiary);
 }
diff --git a/packages/client/ui-plugin-config/src/client/PluginCard.tsx b/packages/client/ui-plugin-config/src/client/PluginCard.tsx
index 469444571b..eeb13662b1 100644
--- a/packages/client/ui-plugin-config/src/client/PluginCard.tsx
+++ b/packages/client/ui-plugin-config/src/client/PluginCard.tsx
@@ -1,29 +1,35 @@
 /**
- * One plugin's card: an expandable row whose body is that plugin's controls.
- * A card renders nothing while its namespace is unavailable — a deployment
- * that does not compose the owning plugin should show no trace of it, rather
- * than an empty or disabled card the user cannot act on.
+ * One plugin's card: a header naming the plugin and what its settings govern,
+ * disclosing that plugin's controls in place.
+ *
+ * The header is its own button rather than a shared disclosure row because a
+ * card stacks its name over its description, while that row lays the two side
+ * by side — the layout, not the behavior, is what differs. Disclosure is
+ * card-local state: which card a user has open is a reading gesture, not
+ * something the Host or the section has any stake in.
+ *
+ * A card renders nothing while its namespace is unavailable: a deployment that
+ * does not compose the owning plugin should show no trace of it, rather than a
+ * disabled card the user cannot act on.
  */
 
-import type { ReactNode } from 'react'
-import { DisclosureRow } from '@deepseek-ai/dsh-client-ui-primitives'
+import { useState, type ReactNode } from 'react'
+import clsx from 'clsx'
+import { IconChevronDownOutline14 } from '@deepseek-ai/dsh-client-ui-primitives'
+import type { PluginConfigKey } from './locales.ts'
 import css from './PluginCard.module.css'
 
 /** Card chrome shared by every plugin section. */
 export interface PluginCardProps {
-  /** Plugin name shown on the row. */
-  title: string
-  /** One line describing what this plugin's settings govern. */
-  description: string
+  /** Locale reader for this section's copy. */
+  t: (key: PluginConfigKey) => string
+  /** Locale key of the plugin's name. */
+  titleKey: PluginConfigKey
+  /** Locale key of the line describing what this plugin's settings govern. */
+  descriptionKey: PluginConfigKey
   /** False while the namespace is not served to this client. */
   available: boolean
-  /** Whether the card body is showing. */
-  open: boolean
-  /** Toggle the card body. */
-  onToggle: () => void
-  /** Copy shown when the settings document refuses writes. */
-  readOnlyLabel?: string | undefined
-  /** True when the Host document is read-only. */
+  /** True when the Host document is read-only, which disables the fields. */
   readOnly: boolean
   /** The plugin's controls. */
   children: ReactNode
@@ -31,31 +37,36 @@ export interface PluginCardProps {
 
 /**
  * Render one plugin card.
- * @param props - card chrome, disclosure state, and the plugin's controls.
+ * @param props - the plugin's copy keys, its availability, and its controls.
  * @returns the card, or nothing when the namespace is unavailable.
  */
 export function PluginCard(props: PluginCardProps) {
+  const [open, setOpen] = useState(false)
   if (!props.available) return null
+  const title = props.t(props.titleKey)
   return (
-    <li className={css.card}>
-      <DisclosureRow
-        icon={null}
-        title={props.title}
-        open={props.open}
-        expandable
-        expandOnRowClick
-        onToggle={props.onToggle}
-        rowClassName={css.row}
-        titleClassName={css.title}
-        collapsedContent={<span className={css.description}>{props.description}</span>}
+    <li className={clsx(css.card, open && css.cardOpen)}>
+      <button
+        type="button"
+        className={css.header}
+        aria-expanded={open}
+        aria-label={`${props.t(open ? 'collapse' : 'expand')}: ${title}`}
+        onClick={() => { setOpen(!open) }}
       >
-        <div className={css.body}>
-          {props.readOnly && props.readOnlyLabel !== undefined
-            ? <p className={css.readOnly} role="status">{props.readOnlyLabel}</p>
-            : null}
-          {props.children}
-        </div>
-      </DisclosureRow>
+        <span className={css.headText}>
+          <span className={css.name}>{title}</span>
+          <span className={css.description}>{props.t(props.descriptionKey)}</span>
+        </span>
+        <IconChevronDownOutline14 className={clsx(css.chevron, open && css.chevronOpen)} />
+      </button>
+      {open
+        ? (
+          <div className={css.body}>
+            {props.readOnly ? <p className={css.readOnly} role="status">{props.t('readOnly')}</p> : null}
+            {props.children}
+          </div>
+        )
+        : null}
     </li>
   )
 }
diff --git a/packages/client/ui-plugin-config/src/client/PluginConfigSection.module.css b/packages/client/ui-plugin-config/src/client/PluginConfigSection.module.css
index 6f2af513e9..45c9a78f00 100644
--- a/packages/client/ui-plugin-config/src/client/PluginConfigSection.module.css
+++ b/packages/client/ui-plugin-config/src/client/PluginConfigSection.module.css
@@ -3,34 +3,34 @@
 .section {
   display: flex;
   flex-direction: column;
+  gap: 12px;
+  max-width: 720px;
+  color: var(--dsw-alias-label-primary);
 }
 
 .heading {
   margin: 0;
-  font-size: 16px;
-  font-weight: 500;
-  line-height: 24px;
-  color: var(--dsw-alias-label-primary);
+  font-size: 18px;
+  font-weight: 600;
 }
 
 .intro {
-  margin: 8px 0 16px;
-  font-size: 12px;
-  font-weight: 400;
-  line-height: 18px;
+  margin: 0;
+  font-size: 13px;
   color: var(--dsw-alias-label-tertiary);
 }
 
 .cards {
+  list-style: none;
   margin: 0;
   padding: 0;
-  list-style: none;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
 }
 
 .empty {
   margin: 0;
-  padding: 16px 0;
-  font-size: 14px;
-  line-height: 22px;
+  font-size: 13px;
   color: var(--dsw-alias-label-tertiary);
 }
diff --git a/packages/client/ui-plugin-config/src/client/WebSearchCard.tsx b/packages/client/ui-plugin-config/src/client/WebSearchCard.tsx
index 72c11fa545..702a7a6627 100644
--- a/packages/client/ui-plugin-config/src/client/WebSearchCard.tsx
+++ b/packages/client/ui-plugin-config/src/client/WebSearchCard.tsx
@@ -4,7 +4,6 @@
  * the settings section, so the literal never rides a response.
  */
 
-import { useState } from 'react'
 import type { SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
 import type { InjectFace, PropsLocale, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
 import { NumberField, SecretField, TextField } from './fields.tsx'
@@ -44,17 +43,14 @@ export type WebSearchCardProps =
 export function WebSearchCard(props: WebSearchCardProps) {
   const { t } = props
   const state = props.useWebSearchCard(snapshot => snapshot)
-  const [open, setOpen] = useState(false)
   const disabled = !state.writable
   return (
     <PluginCard
-      title={t('webSearchTitle')}
-      description={t('webSearchDescription')}
+      t={t}
+      titleKey="webSearchTitle"
+      descriptionKey="webSearchDescription"
       available={state.available}
-      open={open}
-      onToggle={() => { setOpen(!open) }}
       readOnly={disabled}
-      readOnlyLabel={t('readOnly')}
     >
       <SecretField
         id="plugin-config-web-search-key"
diff --git a/packages/client/ui-plugin-config/src/client/agent-loop-store.ts b/packages/client/ui-plugin-config/src/client/agent-loop-store.ts
index 1f4dae6c1a..fd497840c8 100644
--- a/packages/client/ui-plugin-config/src/client/agent-loop-store.ts
+++ b/packages/client/ui-plugin-config/src/client/agent-loop-store.ts
@@ -21,7 +21,7 @@ export interface AgentLoopSettings {
 /** What the agent-loop card renders. */
 export interface AgentLoopCardState extends CardShell {
   /** Parallel tool-call cap. */
-  maxParallelToolCalls: CardField<number>
+  maxParallelToolCalls: CardField<number | undefined>
 }
 
 /** The registration-side face the agent-loop card's slot entry injects. */
@@ -42,7 +42,7 @@ export class AgentLoopCardController extends CardController<AgentLoopSettings, A
   constructor(scope: SettingsScope<AgentLoopSettings>) {
     super(scope, snapshot => ({
       ...shellOf(snapshot),
-      maxParallelToolCalls: fieldOf(snapshot, 'maxParallelToolCalls', 0),
+      maxParallelToolCalls: fieldOf(snapshot, 'maxParallelToolCalls', undefined),
     }))
   }
 
diff --git a/packages/client/ui-plugin-config/src/client/bash-store.ts b/packages/client/ui-plugin-config/src/client/bash-store.ts
index 91114669c1..837a6fab04 100644
--- a/packages/client/ui-plugin-config/src/client/bash-store.ts
+++ b/packages/client/ui-plugin-config/src/client/bash-store.ts
@@ -21,9 +21,9 @@ export interface BashSettings {
 /** What the shell card renders. */
 export interface BashCardState extends CardShell {
   /** Command timeout in milliseconds. */
-  timeoutMs: CardField<number>
+  timeoutMs: CardField<number | undefined>
   /** Per-stream output cap in bytes. */
-  maxOutputBytes: CardField<number>
+  maxOutputBytes: CardField<number | undefined>
 }
 
 /** The registration-side face the shell card's slot entry injects. */
@@ -50,8 +50,8 @@ export class BashCardController extends CardController<BashSettings, BashCardSta
       ...shellOf(snapshot),
       // The fallbacks only show before the Host serves a section; every served
       // section is already schema-defaulted by the owning executor.
-      timeoutMs: fieldOf(snapshot, 'timeoutMs', 0),
-      maxOutputBytes: fieldOf(snapshot, 'maxOutputBytes', 0),
+      timeoutMs: fieldOf(snapshot, 'timeoutMs', undefined),
+      maxOutputBytes: fieldOf(snapshot, 'maxOutputBytes', undefined),
     }))
   }
 
diff --git a/packages/client/ui-plugin-config/src/client/fields.module.css b/packages/client/ui-plugin-config/src/client/fields.module.css
index d48e1e37ee..a344e61a4b 100644
--- a/packages/client/ui-plugin-config/src/client/fields.module.css
+++ b/packages/client/ui-plugin-config/src/client/fields.module.css
@@ -7,6 +7,10 @@
   padding: 12px 0;
 }
 
+.field + .field {
+  border-top: 1px solid var(--dsw-alias-border-l2);
+}
+
 .head {
   display: flex;
   align-items: center;
@@ -16,9 +20,9 @@
 .label {
   flex: 1;
   min-width: 0;
-  font-size: 14px;
-  font-weight: 400;
-  line-height: 22px;
+  font-size: 13px;
+  font-weight: 500;
+  line-height: 1.5;
   color: var(--dsw-alias-label-primary);
 }
 
@@ -29,19 +33,22 @@
 }
 
 .badge {
-  padding: 0 8px;
-  border-radius: 10px;
+  border-radius: 999px;
+  padding: 1px 8px;
+  font-size: 11px;
+  line-height: 17px;
+  white-space: nowrap;
+  font-weight: 500;
   background: var(--dsw-alias-bg-module-platform);
-  font-size: 12px;
-  line-height: 20px;
   color: var(--dsw-alias-label-secondary);
 }
 
 .badgeMuted {
-  padding: 0 8px;
-  border-radius: 10px;
-  font-size: 12px;
-  line-height: 20px;
+  border-radius: 999px;
+  padding: 1px 8px;
+  font-size: 11px;
+  line-height: 17px;
+  white-space: nowrap;
   color: var(--dsw-alias-label-tertiary);
 }
 
@@ -51,7 +58,7 @@
   padding: 0;
   font: inherit;
   font-size: 12px;
-  line-height: 20px;
+  line-height: 1.5;
   color: var(--dsw-alias-label-secondary);
   cursor: pointer;
 }
@@ -65,17 +72,22 @@
 }
 
 .input {
-  height: 36px;
+  height: 34px;
   padding: 0 12px;
   border: 1px solid var(--dsw-alias-border-l2);
   border-radius: 8px;
-  background: var(--dsw-alias-bg-module-platform);
+  background: var(--dsw-alias-bg-layer-3);
   font: inherit;
-  font-size: 14px;
-  line-height: 22px;
+  font-size: 13px;
+  line-height: 1.5;
   color: var(--dsw-alias-label-primary);
 }
 
+.input:focus-visible {
+  outline: none;
+  border-color: var(--dsw-alias-brand-primary);
+}
+
 .input:disabled {
   color: var(--dsw-alias-label-tertiary);
   cursor: default;
@@ -84,7 +96,6 @@
 .hint {
   margin: 0;
   font-size: 12px;
-  font-weight: 400;
-  line-height: 18px;
+  line-height: 1.5;
   color: var(--dsw-alias-label-tertiary);
 }
diff --git a/packages/client/ui-plugin-config/src/client/fields.tsx b/packages/client/ui-plugin-config/src/client/fields.tsx
index fa447b5f5b..0fece80a62 100644
--- a/packages/client/ui-plugin-config/src/client/fields.tsx
+++ b/packages/client/ui-plugin-config/src/client/fields.tsx
@@ -115,8 +115,11 @@ function DraftInput(props: {
 
 /** A whole-number field committed on blur or Enter. */
 export function NumberField(props: FieldProps & {
-  /** Current effective value. */
-  value: number
+  /**
+   * Current effective value, or undefined when the Host served none — which
+   * renders empty rather than as a number nobody chose.
+   */
+  value: number | undefined
   /** Commit a parsed value; a draft that is not a finite number is discarded. */
   onCommit: (next: number) => void
 }) {
@@ -124,13 +127,13 @@ export function NumberField(props: FieldProps & {
     <FieldFrame {...props}>
       <DraftInput
         id={props.id}
-        value={String(props.value)}
+        value={props.value === undefined ? '' : String(props.value)}
         disabled={props.disabled}
         numeric
         onSettle={(draft, restore) => {
           const parsed = Number(draft)
           if (draft.trim() === '' || !Number.isFinite(parsed)) {
-            restore(String(props.value))
+            restore(props.value === undefined ? '' : String(props.value))
             return
           }
           if (parsed === props.value) return
diff --git a/packages/client/ui-plugin-config/src/client/locales.ts b/packages/client/ui-plugin-config/src/client/locales.ts
index 6a3804236c..7babcc1bdd 100644
--- a/packages/client/ui-plugin-config/src/client/locales.ts
+++ b/packages/client/ui-plugin-config/src/client/locales.ts
@@ -13,11 +13,9 @@ export type PluginConfigKey =
 
 /** English copy. */
 export const en: Record<PluginConfigKey, string> = {
-  nav: 'Plugins',
+  nav: 'Plugin config',
   title: 'Plugin configuration',
-  intro:
-    'Settings owned by the plugins this deployment composes. A value you set here layers over the '
-    + 'composition default and applies to the next use.',
+  intro: 'Configure the plugins this deployment installed.',
   empty: 'This deployment exposes no plugin settings.',
   overridden: 'Overridden',
   reset: 'Reset to default',
@@ -48,9 +46,9 @@ export const en: Record<PluginConfigKey, string> = {
 
 /** Simplified Chinese copy. */
 export const zh: Record<PluginConfigKey, string> = {
-  nav: '插件',
+  nav: '插件配置',
   title: '插件配置',
-  intro: '本部署所组装插件自己拥有的设置。你在这里设的值会覆盖组装默认值，并在下一次使用时生效。',
+  intro: '配置本部署已安装的插件。',
   empty: '本部署没有开放任何插件设置。',
   overridden: '已覆盖',
   reset: '恢复默认',
diff --git a/packages/client/ui-plugin-config/src/client/web-search-store.ts b/packages/client/ui-plugin-config/src/client/web-search-store.ts
index c0242eed8b..2def74cb79 100644
--- a/packages/client/ui-plugin-config/src/client/web-search-store.ts
+++ b/packages/client/ui-plugin-config/src/client/web-search-store.ts
@@ -36,7 +36,7 @@ export interface WebSearchCardState extends CardShell {
   /** Provider endpoint. */
   baseURL: CardField<string>
   /** Searches allowed per request. */
-  maxUses: CardField<number>
+  maxUses: CardField<number | undefined>
   /** Credential reference the key is written under. */
   apiKeyRef: string
   /** Whether the Host reports a credential configured for that reference. */
@@ -78,7 +78,7 @@ export class WebSearchCardController extends CardController<WebSearchSettings, W
     super(scope, snapshot => ({
       ...shellOf(snapshot),
       baseURL: fieldOf(snapshot, 'baseURL', ''),
-      maxUses: fieldOf(snapshot, 'maxUses', 0),
+      maxUses: fieldOf(snapshot, 'maxUses', undefined),
       apiKeyRef: refOf(snapshot),
       apiKeyConfigured: credential.configured,
     }))
diff --git a/packages/client/ui-plugin-config/tests/apply.spec.ts b/packages/client/ui-plugin-config/tests/apply.spec.ts
index 86bb21606a..233f0cd337 100644
--- a/packages/client/ui-plugin-config/tests/apply.spec.ts
+++ b/packages/client/ui-plugin-config/tests/apply.spec.ts
@@ -48,7 +48,7 @@ describe('ui-plugin-config apply', () => {
     const section = slots.entries('settings.section')[0]!
     expect(section.options).toMatchObject({ id: 'plugins', order: 30 })
     // The nav label is a locale-following thunk; owners resolve it at read time.
-    expect(resolveSlotLabel(section.options.label)).toBe('插件')
+    expect(resolveSlotLabel(section.options.label)).toBe('插件配置')
     expect(slots.spec('settings.plugin.item')).toMatchObject({ kind: 'list', scope: 'root' })
   })
 
diff --git a/packages/client/ui-plugin-config/tests/fields.spec.tsx b/packages/client/ui-plugin-config/tests/fields.spec.tsx
index d444ae14a8..0248fee10d 100644
--- a/packages/client/ui-plugin-config/tests/fields.spec.tsx
+++ b/packages/client/ui-plugin-config/tests/fields.spec.tsx
@@ -116,6 +116,22 @@ describe('NumberField', () => {
     expect(onCommit).not.toHaveBeenCalled()
   })
 
+  it('renders an absent value as empty rather than as a number nobody chose', () => {
+    const onCommit = vi.fn()
+    render(
+      <NumberField {...frame} overridden={false} onReset={vi.fn()} value={undefined} onCommit={onCommit} />,
+    )
+    const input = screen.getByLabelText('Command timeout')
+    expect(input).toHaveProperty('value', '')
+
+    // A draft typed and then cleared restores the same emptiness, not a zero.
+    fireEvent.change(input, { target: { value: 'abc' } })
+    fireEvent.blur(input)
+
+    expect(input).toHaveProperty('value', '')
+    expect(onCommit).not.toHaveBeenCalled()
+  })
+
   it('suppresses every interaction while disabled', () => {
     const onCommit = vi.fn()
     const onReset = vi.fn()
diff --git a/packages/client/ui-settings/src/client/SettingsRoot.tsx b/packages/client/ui-settings/src/client/SettingsRoot.tsx
index 54e0e0dbb7..23f5421ff3 100644
--- a/packages/client/ui-settings/src/client/SettingsRoot.tsx
+++ b/packages/client/ui-settings/src/client/SettingsRoot.tsx
@@ -14,7 +14,8 @@
 import { useCallback, useEffect, useId, useRef, useState } from 'react'
 import clsx from 'clsx'
 import {
-  IconCloseOutline16, IconDataOutline16, IconSettingsOutline16, IconThinkOutline16,
+  IconCloseOutline16, IconDataOutline16, IconPersonalizationOutline16,
+  IconSettingsOutline16, IconThinkOutline16,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { SettingsRootComponentProps, SettingsSectionRow } from './contract/slots.ts'
 import css from './SettingsRoot.module.css'
@@ -23,6 +24,7 @@ import css from './SettingsRoot.module.css'
 function navIcon(id: string) {
   if (id === 'models') return <IconDataOutline16 className={css.navIcon} size={16} />
   if (id === 'agent-presets') return <IconThinkOutline16 className={css.navIcon} size={16} />
+  if (id === 'plugins') return <IconPersonalizationOutline16 className={css.navIcon} size={16} />
   return <IconSettingsOutline16 className={css.navIcon} size={16} />
 }
 
diff --git a/packages/web/web-search-deepseek/src/index.ts b/packages/web/web-search-deepseek/src/index.ts
index 50d9c69e22..bb3a6efe0a 100644
--- a/packages/web/web-search-deepseek/src/index.ts
+++ b/packages/web/web-search-deepseek/src/index.ts
@@ -63,11 +63,14 @@ export interface Config {
 export const Config: z<Config> = z.object({
   apiKey: z.string().role('secret'),
   apiKeyEnv: z.string().role('credential-ref').default(DEFAULT_API_KEY_ENV),
+  // Declared here rather than only at the use site: a configuration surface
+  // renders the resolved section, so a default the schema does not carry reads
+  // there as no value at all.
   baseURL: z.string(),
-  model: z.string(),
-  apiVersion: z.string(),
-  maxTokens: z.number().step(1).min(1),
-  maxUses: z.number().step(1).min(1),
+  model: z.string().default(DEEPSEEK_DEFAULT_MODEL),
+  apiVersion: z.string().default(DEEPSEEK_DEFAULT_API_VERSION),
+  maxTokens: z.number().step(1).min(1).default(DEEPSEEK_DEFAULT_MAX_TOKENS),
+  maxUses: z.number().step(1).min(1).default(DEEPSEEK_DEFAULT_MAX_USES),
 })
 
 /**
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 8c1950a855..50b497608c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -2291,6 +2291,10 @@ importers:
         version: 18.3.1
 
   packages/client/ui-plugin-config:
+    dependencies:
+      clsx:
+        specifier: ^2.0.0
+        version: 2.1.1
     devDependencies:
       '@deepseek-ai/dsh-client-connection':
         specifier: workspace:^