Hide the conversation column when the preview expands (#47)

Restore hidden on the conversation column and center wide docx pages.

.gitignore

@@ -2,6 +2,7 @@
 node_modules
 dist/
 *.local
+*.tsbuildinfo
 
 # mimosa 扫描钩子的本地缓存（scripts/hooks 写入，不入库）
 .mimosa

src/App.tsx

@@ -14,7 +14,6 @@ import { Workspaces, workspaceShortcuts } from './components/Workspaces'
 import { AgentTracker } from './components/AgentTracker'
 import { SettingsModal } from './components/SettingsModal'
 import { ProjectSettingsModal } from './components/ProjectSettingsModal'
-import { DocViewer } from './components/DocViewer'
 import { TopBar } from './components/TopBar'
 import { workspaceEntries } from './components/Workspaces'
 
@@ -37,7 +36,7 @@ export function App() {
   })
   const toast = useStore(s => s.toast)
   const trackerRunId = useStore(s => s.ui.trackerRunId)
-  const viewingArtifact = useStore(s => s.ui.viewingArtifact)
+  const previewExpanded = previewOpen && ui.previewExpanded
   const pendingBadge = useStore(s => s.cards.filter(c => c.status === 'action_required').length)
   // authState：checking → login（登录）→ mustchange（首登强制改密）→ ok（放行）。
   const [authState, setAuthState] = useState<'checking' | 'login' | 'mustchange' | 'ok'>('checking')
@@ -143,14 +142,16 @@ export function App() {
         </div>
       )}
 
-      <div className="main">
+      <div className="main" hidden={previewExpanded}>
         <Conversation />
       </div>
 
       {previewOpen && (
         <>
-          <div className="divider" onMouseDown={onDividerDown('preview')} title="拖动调整预览区宽度" />
-          <div className="preview-slot" style={{ width: ui.previewWidth }}>
+          {!previewExpanded && (
+            <div className="divider" onMouseDown={onDividerDown('preview')} title="拖动调整预览区宽度" />
+          )}
+          <div className={`preview-slot mk-panel-grow${previewExpanded ? ' expanded' : ''}`} style={previewExpanded ? undefined : { width: ui.previewWidth }}>
             <PreviewPane />
           </div>
         </>
@@ -180,7 +181,6 @@ export function App() {
       {ui.projectSettingsId && <ProjectSettingsModal />}
       {ui.adminZoneOpen && <AdminZone />}
       {ui.changePwOpen && <ChangePasswordModal onClose={() => store.setUI({ changePwOpen: false })} />}
-      {viewingArtifact && <DocViewer artifact={viewingArtifact} />}
       {toast && <div className="toast">{toast}</div>}
     </div>
   )

src/components/ArtifactsPanel.tsx

@@ -37,7 +37,7 @@ export function ArtifactsPanel() {
         : visible.length === 0
           ? <div className="empty-note">没有匹配「{q}」的文件</div>
           : visible.map(a => (
-            // 预览落在对话右侧预览区。弹层盖住主区，先收起再打开。
+            // 预览落在对话右侧预览区。工作区弹层盖住主区，先收起再打开。
             <div key={a.id} className="artifact-row" data-artifact-row={a.id}
               onClick={() => { store.closeWorkspace(); store.requestPreview(a) }} title={`预览 ${a.name}`}>
               <span className="ar-icon"><Icon name={artifactIcon(a.name, a.kind)} size={15} /></span>
@@ -46,7 +46,7 @@ export function ArtifactsPanel() {
                 <span className="meta">{a.kind} · {humanSize(a.size) || '—'} · {shortTime(a.updatedAt)}</span>
               </span>
               <span className="ar-acts">
-                <button className="icon-btn" title="全屏预览" onClick={e => { e.stopPropagation(); store.closeWorkspace(); store.requestPreview(a, 'full') }}><Icon name="eye" size={14} /></button>
+                <button className="icon-btn" title="展开预览" onClick={e => { e.stopPropagation(); store.closeWorkspace(); store.requestPreview(a); store.setUI({ previewExpanded: true }) }}><Icon name="maximize" size={14} /></button>
                 <a className="icon-btn" title="下载" href={api.artifactDownloadUrl(a.id)} download={a.name}
                   onClick={e => e.stopPropagation()}><Icon name="download" size={14} /></a>
               </span>

src/components/DocViewer.tsx

@@ -1,68 +0,0 @@
-// 文档查看器（4.4 → 预览能力收敛）：格式渲染统一交给 @ui FilePreview
-// （md/图片/pdf/代码/数据/docx/xlsx/pptx/URL 一套分派），这里只保留 OverlayHost
-// 容器、工具栏与文本族的在线编辑保存。
-import { useEffect, useState } from 'react'
-import { api } from '../api'
-import { store } from '../store'
-import { OverlayHost, Icon, Btn, FilePreview } from '@ui'
-import type { Artifact } from '../contracts'
-import { humanSize } from '../messageparts'
-
-export function DocViewer({ artifact }: { artifact: Artifact }) {
-  const [content, setContent] = useState<string | null>(null)
-  const [editing, setEditing] = useState(false)
-  const [dirty, setDirty] = useState(false)
-
-  const textKind = isTextKind(artifact)
-  useEffect(() => {
-    if (!textKind) return
-    setContent(null)
-    fetch(api.artifactContentUrl(artifact.id)).then(r => r.text()).then(setContent).catch(() => setContent('（读取失败）'))
-  }, [artifact.id])
-
-  const source = {
-    kind: 'artifact' as const,
-    id: artifact.id,
-    name: artifact.name,
-    mime: artifact.mime,
-    contentUrl: api.artifactContentUrl(artifact.id),
-    downloadUrl: api.artifactDownloadUrl(artifact.id),
-  }
-
-  return (
-    <OverlayHost title={artifact.name} icon="📄" onClose={() => store.viewArtifact(null)}>
-      <div className="docv">
-        <div className="docv-toolbar">
-          <span className="docv-meta">{artifact.kind}{humanSize(artifact.size) ? ` · ${humanSize(artifact.size)}` : ''}</span>
-          <span className="spacer" />
-          {dirty && <span className="docv-dirty">未保存</span>}
-          {textKind && (
-            <>
-              <Btn variant="ghost" icon={editing ? 'eye' : 'list'} onClick={() => setEditing(e => !e)}>{editing ? '预览' : '编辑'}</Btn>
-              {editing && <Btn variant="primary" icon="check" disabled={!dirty} onClick={async () => {
-                await api.saveArtifactContent(artifact.id, content ?? '')
-                setDirty(false)
-                store.toast('已保存')
-              }}>保存</Btn>}
-            </>
-          )}
-          <a className="btn v-ghost docv-dl" href={api.artifactDownloadUrl(artifact.id)} download={artifact.name}>
-            <Icon name="download" size={14} /> 下载
-          </a>
-        </div>
-        <div className="docv-body">
-          {editing && textKind ? (
-            <textarea className="search-input docv-editor" value={content ?? ''}
-              onChange={e => { setContent(e.target.value); setDirty(true) }} />
-          ) : (
-            <FilePreview source={source} />
-          )}
-        </div>
-      </div>
-    </OverlayHost>
-  )
-}
-
-function isTextKind(a: Artifact): boolean {
-  return a.kind === 'document' && /\.(md|txt|csv|log|json)$/i.test(a.name)
-}

src/components/PreviewPane.tsx

@@ -1,6 +1,10 @@
-// 对话右侧预览区：多标签、可关、全屏与下载。宽度由 App 的分隔条控制。
-import { FilePreview, TabStrip, Icon } from '@ui'
+// 对话右侧预览区：多标签、可关、展开与下载。宽度由 App 的分隔条控制；
+// 展开态铺满主区。文本类文件在这里编辑保存。
+import { useEffect, useState } from 'react'
+import { Btn, FilePreview, Icon, TabStrip } from '@ui'
 import { api } from '../api'
+import type { Artifact } from '../contracts'
+import { humanSize } from '../messageparts'
 import { store, useStore } from '../store'
 
 export function PreviewPane() {
@@ -8,9 +12,28 @@ export function PreviewPane() {
   const tabs = useStore(s => (convId ? s.previewTabs[convId] : undefined) ?? [])
   const activeId = useStore(s => (convId ? s.previewActive[convId] : null) ?? null)
   const artifacts = useStore(s => s.artifacts)
+  const expanded = useStore(s => s.ui.previewExpanded)
   const active = tabs.find(t => t.id === activeId) ?? tabs[0]
+  const art = active ? artifacts.find(a => a.id === active.id) : undefined
+  const textKind = !!art && isTextKind(art)
+  const [content, setContent] = useState<string | null>(null)
+  const [editing, setEditing] = useState(false)
+  const [dirty, setDirty] = useState(false)
+
+  useEffect(() => {
+    setEditing(false)
+    setDirty(false)
+    setContent(null)
+    if (!art || !isTextKind(art)) return
+    let cancelled = false
+    fetch(api.artifactContentUrl(art.id))
+      .then(r => r.text())
+      .then(text => { if (!cancelled) setContent(text) })
+      .catch(() => { if (!cancelled) setContent('（读取失败）') })
+    return () => { cancelled = true }
+  }, [art?.id])
+
   if (!active) return null
-  const art = artifacts.find(a => a.id === active.id)
   return (
     <div className="preview-pane">
       <TabStrip
@@ -21,11 +44,25 @@ export function PreviewPane() {
       />
       <div className="preview-pane-bar">
         <span className="preview-pane-name" title={active.name}>{active.name}</span>
+        {art && (
+          <span className="preview-pane-meta">{art.kind}{humanSize(art.size) ? ` · ${humanSize(art.size)}` : ''}</span>
+        )}
         <span className="preview-pane-spacer" />
         {art && (
           <>
-            <button type="button" className="icon-btn" title="全屏预览" onClick={() => store.requestPreview(art, 'full')}>
-              <Icon name="eye" size={14} />
+            {dirty && <span className="preview-pane-dirty">未保存</span>}
+            {textKind && (
+              <>
+                <Btn variant="ghost" icon={editing ? 'eye' : 'list'} onClick={() => setEditing(e => !e)}>{editing ? '预览' : '编辑'}</Btn>
+                {editing && <Btn variant="primary" icon="check" disabled={!dirty} onClick={async () => {
+                  await api.saveArtifactContent(art.id, content ?? '')
+                  setDirty(false)
+                  store.toast('已保存')
+                }}>保存</Btn>}
+              </>
+            )}
+            <button type="button" className="icon-btn" title={expanded ? '还原预览' : '展开预览'} aria-pressed={expanded} onClick={() => store.togglePreviewExpanded()}>
+              <Icon name={expanded ? 'minimize' : 'maximize'} size={14} />
             </button>
             <a className="icon-btn" title="下载" href={api.artifactDownloadUrl(art.id)} download={art.name}>
               <Icon name="download" size={14} />
@@ -34,7 +71,10 @@ export function PreviewPane() {
         )}
       </div>
       <div className="preview-pane-body">
-        {art ? (
+        {editing && textKind ? (
+          <textarea className="search-input preview-pane-editor" value={content ?? ''}
+            onChange={e => { setContent(e.target.value); setDirty(true) }} />
+        ) : art ? (
           <FilePreview source={{
             kind: 'artifact',
             id: art.id,
@@ -48,3 +88,7 @@ export function PreviewPane() {
     </div>
   )
 }
+
+function isTextKind(a: Artifact): boolean {
+  return a.kind === 'document' && /\.(md|txt|csv|log|json)$/i.test(a.name)
+}

src/components/SettingsModal.tsx

@@ -4,7 +4,7 @@
 // 插件工作区迁「系统管理」（AdminZone，管理员专属全屏视图）。
 import { useEffect, useMemo, useState } from 'react'
 import { api } from '../api'
-import { store, useStore } from '../store'
+import { isFontSizeChoice, store, useStore } from '../store'
 import type { ThemeChoice } from '../theme'
 import type { SettingDesc } from '../contracts'
 import { SettingsShell, SettingRow, SettingsGroup, Btn } from '@ui'
@@ -25,6 +25,7 @@ export function SettingsModal() {
   const [draft, setDraft] = useState<Record<string, any>>({})
   const [saved, setSaved] = useState(false)
   const theme = useStore(s => s.ui.theme)
+  const fontSize = useStore(s => s.ui.fontSize)
 
   useEffect(() => {
     api.getSettings().then(s => {
@@ -80,6 +81,17 @@ export function SettingsModal() {
               <option value="system">跟随系统</option>
             </select>
           </SettingRow>
+          <SettingRow label="界面字号" desc="小、标准、大、特大。只保存在这台设备上，图标和间距不跟随缩放" effect="hot">
+            <select value={fontSize} onChange={e => {
+              const next = Number(e.target.value)
+              if (isFontSizeChoice(next)) store.setUI({ fontSize: next })
+            }}>
+              <option value={13}>小</option>
+              <option value={14}>标准</option>
+              <option value={16}>大</option>
+              <option value={18}>特大</option>
+            </select>
+          </SettingRow>
         </SettingsGroup>
       )}
       {section === 'settings' && Object.entries(groups).map(([g, descs]) => {

src/messageparts.ts

@@ -126,7 +126,7 @@ export function workedLabel(createdAt?: string, endedAt?: string): string {
   return text ? `已工作 ${text}` : '已工作'
 }
 
-/** 文件大小人类可读（工件面板/DocViewer 共用）。 */
+/** 文件大小人类可读（工件面板/预览栏共用）。 */
 export function humanSize(n: number | undefined): string {
   if (!n || n <= 0) return ''
   const units = ['B', 'KB', 'MB', 'GB']

src/previewfit.ts

@@ -0,0 +1,53 @@
+// docx 分页纸面按预览栏宽度等比缩小。只缩不放：栏宽够放下整页时保持 100%。
+// gutter 与 styles.css 里 .docx-wrapper 的左右 padding（12px + 12px）对齐。
+
+export function computeFitScale(containerWidth: number, pageWidth: number, gutter: number): number {
+  if (!Number.isFinite(containerWidth) || !Number.isFinite(pageWidth) || pageWidth <= 0) return 1
+  if (!Number.isFinite(gutter)) return 1
+  const available = containerWidth - gutter
+  if (!(available > 0)) return 1
+  return Math.min(1, available / pageWidth)
+}
+
+const PAGE_GUTTER_PX = 24
+
+/** host 是 docx-preview 的渲染根（内含 .docx-wrapper）；el 是用来量栏宽的元素。
+ *  拖动分隔条时 el 变宽，ResizeObserver 重算。返回的函数卸下监听并清掉行内缩放。 */
+export function fitPagesToWidth(host: HTMLElement, el: HTMLElement): () => void {
+  const apply = () => {
+    const wrapper = host.querySelector<HTMLElement>('.docx-wrapper')
+    const page = host.querySelector<HTMLElement>('section.docx')
+    if (!wrapper || !page) return
+    const scale = computeFitScale(el.clientWidth, page.offsetWidth, PAGE_GUTTER_PX)
+    wrapper.style.transformOrigin = 'top left'
+    wrapper.style.transform = scale < 1 ? `scale(${scale})` : ''
+    const nextHeight = `${Math.round(wrapper.offsetHeight * scale)}px`
+    if (host.style.height !== nextHeight) host.style.height = nextHeight
+    host.style.overflow = 'hidden'
+    host.style.minHeight = '0'
+  }
+  apply()
+  if (typeof ResizeObserver === 'undefined') {
+    return () => clearFit(host)
+  }
+  const observer = new ResizeObserver(() => apply())
+  observer.observe(el)
+  // 页内图片后加载只改变页纸高度，不改变栏宽。el 变宽和 wrapper 变高都要重算宿主高度。
+  const wrapper = host.querySelector<HTMLElement>('.docx-wrapper')
+  if (wrapper && wrapper !== el) observer.observe(wrapper)
+  return () => {
+    observer.disconnect()
+    clearFit(host)
+  }
+}
+
+function clearFit(host: HTMLElement) {
+  const wrapper = host.querySelector<HTMLElement>('.docx-wrapper')
+  if (wrapper) {
+    wrapper.style.transform = ''
+    wrapper.style.transformOrigin = ''
+  }
+  host.style.height = ''
+  host.style.overflow = ''
+  host.style.minHeight = ''
+}

src/previewsetup.ts

@@ -4,6 +4,7 @@
 import { configureFilePreviewLoaders, configureLinkPreviewFetcher, renderMarkdown, setSafeHTML, stripUnsafeLinks } from '@ui'
 import { auth } from './auth'
 import type { LinkPreviewData } from '@ui'
+import { fitPagesToWidth } from './previewfit'
 
 const fetchBuf = async (url: string | undefined): Promise<ArrayBuffer> => {
   const r = await fetch(url!)
@@ -43,7 +44,7 @@ const docxLoader = async (el: HTMLElement, source: { contentUrl?: string; name?:
     el.innerHTML = ''
     await renderAsync(buf, el, el, { className: 'docx', inWrapper: true, breakPages: true })
     stripUnsafeLinks(el)
-    return
+    return fitPagesToWidth(el, el)
   } catch (err) {
     console.error('[preview:docx] page render failed, falling back', source.name, err)
   }

src/store.ts

@@ -8,6 +8,13 @@ import { deliveryRequestId, enqueueMessage, enqueueMessageFront, newQueuedMessag
 import { canFlushOutbox, deriveShellPhase } from './runstate'
 import { flashElement } from './scrollsync'
 import { isThemeChoice, resolveTheme, type ThemeChoice } from './theme'
+
+type FontSizeChoice = 13 | 14 | 16 | 18
+const FONT_SIZE_CHOICES: readonly FontSizeChoice[] = [13, 14, 16, 18]
+
+export function isFontSizeChoice(value: number): value is FontSizeChoice {
+  return (FONT_SIZE_CHOICES as readonly number[]).includes(value)
+}
 import type {
   Project, Conversation, Message, Run, Artifact, HITLCard, PlanSnapshot, TodoList,
   AgentProfile, StreamEvent, PluginPanel, ActivityCard,
@@ -40,12 +47,15 @@ export interface UIState {
   /** 收件箱筛选：全部 / 待处理。铃铛打开时切到待处理。 */
   inboxFilter: 'all' | 'todo'
   theme: ThemeChoice
+  /** 界面字号，只写本机。对应 --ui-font-size。 */
+  fontSize: FontSizeChoice
   autoCollapseProcess: boolean
   settingsOpen: boolean
   trackerRunId: string | null
-  viewingArtifact: Artifact | null
   /** 预览区宽度。标签列表按会话放在 AppState，不进本地偏好。 */
   previewWidth: number
+  /** 预览栏铺满主区。标签不持久化，这个标志在 loadUI 时强制复位。 */
+  previewExpanded: boolean
   activeWorkspace: string | null
   taskOrg: 'project' | 'timeline'
   showArchived: boolean
@@ -102,11 +112,12 @@ const DEFAULT_UI: UIState = {
   inboxFilter: 'all',
   activeWorkspace: null,
   theme: 'dark',
+  fontSize: 14,
   autoCollapseProcess: true,
   settingsOpen: false,
   trackerRunId: null,
-  viewingArtifact: null,
   previewWidth: 640,
+  previewExpanded: false,
   taskOrg: 'project',
   showArchived: false,
   lastProjectId: null,
@@ -121,7 +132,10 @@ function loadUI(): UIState {
     if (raw) {
       const ui = { ...DEFAULT_UI, ...JSON.parse(raw) } as UIState
       if (!isThemeChoice(ui.theme)) ui.theme = 'dark'
+      if (!isFontSizeChoice(ui.fontSize)) ui.fontSize = 14
       if (ui.inboxFilter !== 'all' && ui.inboxFilter !== 'todo') ui.inboxFilter = 'all'
+      // 预览标签不进本地偏好。展开态若随刷新残留，会在没有标签时藏起对话。
+      ui.previewExpanded = false
       return ui
     }
   } catch { /* ignore */ }
@@ -166,6 +180,7 @@ function setUI(patch: Partial<UIState>) {
   state = { ...state, ui }
   try { localStorage.setItem('as.ui', JSON.stringify(ui)) } catch { /* ignore */ }
   applyTheme(ui.theme)
+  applyFontSize(ui.fontSize)
   listeners.forEach(l => l())
 }
 
@@ -193,6 +208,12 @@ function applyTheme(theme: string) {
 }
 
 applyTheme(state.ui.theme)
+applyFontSize(state.ui.fontSize)
+
+function applyFontSize(size: FontSizeChoice) {
+  if (typeof document === 'undefined') return
+  document.documentElement.style.setProperty('--ui-font-size', `${size}px`)
+}
 
 function flashLocate(root: string, attr: string, id: string) {
   if (typeof document === 'undefined') return
@@ -778,13 +799,11 @@ export const store = {
     setTimeout(() => flashLocate('.chat', 'data-msg-id', messageId), 60)
   },
   openTracker(runId: string) { setUI({ trackerRunId: runId }) },
-  viewArtifact(a: Artifact | null) { setUI({ viewingArtifact: a }) },
   /**
-   * 工件预览唯一入口。默认在对话右侧预览区打开或激活标签；hint 'full' 落位全屏
-   * DocViewer。打开第一张标签时收起右栏，关掉最后一张时恢复。
+   * 工件预览唯一入口：在对话右侧预览区打开或激活标签。
+   * 打开第一张标签时收起右栏，关掉最后一张时恢复，并收回展开态。
    */
-  requestPreview(a: Artifact, hint?: 'full') {
-    if (hint === 'full') { setUI({ viewingArtifact: a }); return }
+  requestPreview(a: Artifact) {
     const conv = state.currentConvId ?? '_'
     const opened = openPreviewTab(state.previewTabs[conv] ?? [], { id: a.id, name: a.name })
     set({
@@ -793,6 +812,7 @@ export const store = {
     })
     syncPreviewRail(true)
   },
+  togglePreviewExpanded() { setUI({ previewExpanded: !state.ui.previewExpanded }) },
   activatePreview(id: string) {
     const conv = state.currentConvId ?? '_'
     set({ previewActive: { ...state.previewActive, [conv]: id } })
@@ -804,6 +824,7 @@ export const store = {
       previewTabs: { ...state.previewTabs, [conv]: next.tabs },
       previewActive: { ...state.previewActive, [conv]: next.activeId },
     })
+    if (next.tabs.length === 0) setUI({ previewExpanded: false })
     syncPreviewRail(next.tabs.length > 0)
   },
   openSettings(open: boolean) { setUI({ settingsOpen: open }) },

src/styles.css

@@ -54,6 +54,8 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .divider:hover::before, .divider.dragging::before { background: var(--border-strong); }
 .divider::after { content: ''; position: absolute; inset: 0 -3px; } /* 拖拽热区加宽 */
 .main { flex: 1; min-width: 0; display: flex; flex-direction: column; background: var(--bg); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); }
+/* 作者 display 声明会压过 UA 的 [hidden]，此处显式恢复；展开预览靠它隐藏对话列 */
+.main[hidden] { display: none !important; }
 .right-panel { background: var(--bg-panel); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); display: flex; flex-direction: column; flex-shrink: 0; min-width: 0; }
 .right-panel.collapsed { width: 44px !important; }
 
@@ -70,7 +72,7 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .btn:disabled { opacity: .42; cursor: not-allowed; box-shadow: none; }
 .btn.ghost { background: var(--bg-raised); border: 1px solid var(--border-strong); color: var(--text-dim); box-shadow: none; }
 .btn.ghost:hover:not(:disabled) { color: var(--text); border-color: var(--text-faint); background: var(--bg-raised); }
-.btn.danger { background: var(--err); }
+.btn.danger { background: var(--err-text); color: var(--text-on-semantic); }
 .icon-btn {
   background: none; border: none; color: var(--text-faint);
   border-radius: var(--radius-sm); padding: 0; width: 28px; height: 28px;
@@ -102,13 +104,13 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
   position: absolute; inset: 8px; z-index: 5; pointer-events: none;
   display: flex; align-items: center; justify-content: center;
   border: 1px dashed var(--accent); border-radius: var(--radius-lg);
-  background: var(--accent-soft); color: var(--accent); font-size: var(--fs-ui-sm);
+  background: var(--accent-soft); color: var(--accent-text); font-size: var(--fs-ui-sm);
 }
-.empty-state { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text-faint); gap: 10px; font-size: var(--fs-ui-caption); }
+.empty-state { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--text-dim); gap: 10px; font-size: var(--fs-ui-caption); }
 .empty-state .es-mark { width: 44px; height: 44px; border-radius: var(--radius-lg); background: var(--bg-raised); border: 1px solid var(--border-soft); display: flex; align-items: center; justify-content: center; color: var(--text-faint); margin-bottom: 4px; }
 .empty-state svg { opacity: .5; }
 .msg { margin-bottom: 20px; animation: mk-rise-in .18s var(--ease-out); }
-.msg-role { font-size: var(--fs-ui-sm); color: var(--text-faint); margin-bottom: 6px; display: flex; gap: 8px; align-items: center; }
+.msg-role { font-size: var(--fs-ui-sm); color: var(--text-dim); margin-bottom: 6px; display: flex; gap: 8px; align-items: center; }
 .msg-role .role-mark { width: 18px; height: 18px; border-radius: 5px; display: inline-flex; align-items: center; justify-content: center; color: var(--text-dim); background: var(--bg-raised); border: 1px solid var(--border); }
 .msg.notice { margin-bottom: 12px; }
 .notice-summary { font-size: var(--fs-ui-sm); color: var(--text-dim); background: none; border: none; padding: 0; cursor: pointer; }
@@ -125,9 +127,9 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .part-thinking .mk-col-trigger[aria-expanded="true"] .part-thinking-chev { transform: rotate(90deg); }
 .part-thinking .part-thinking-body { white-space: pre-wrap; margin-top: 4px; }
 .part-tool { font-size: var(--fs-ui-sm); }
-.tool-chip { display: inline-flex; gap: 6px; align-items: center; background: var(--bg-inset); border: 1px solid var(--border-soft); border-radius: var(--radius-sm); padding: 4px 9px; margin: 2px 4px 2px 0; font-family: var(--mono); }
-.tool-chip .status-ok { color: var(--ok); }
-.tool-chip .status-error { color: var(--err); }
+.tool-chip { display: inline-flex; gap: 6px; align-items: center; background: var(--bg-inset); border: 1px solid var(--border-soft); border-radius: var(--radius-sm); padding: 4px 9px; margin: 2px 4px 2px 0; font-family: var(--mono); font-size: var(--fs-code); }
+.tool-chip .status-ok { color: var(--ok-text); }
+.tool-chip .status-error { color: var(--err-text); }
 .part-text { line-height: 1.7; overflow-wrap: break-word; }
 /* 块级间距只由标签自身控制：禁用 pre-wrap（marked 输出的块间换行会被渲染成空行，
    叠加出"列表逐项空一行"的松散排版）；行内换行语义交给 Markdown 段落。 */
@@ -141,7 +143,7 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .part-text :is(ul,ol) { margin: 0.4em 0; padding-left: 1.6em; }
 .part-text li { margin: 0.15em 0; }
 .part-text li > p { margin: 0.2em 0; }
-.part-text pre { background: var(--bg-inset); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 11px 13px; overflow-x: auto; font-family: var(--mono); font-size: var(--fs-ui-sm); }
+.part-text pre { background: var(--bg-inset); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 11px 13px; overflow-x: auto; font-family: var(--mono); font-size: var(--fs-code); }
 .part-text code { font-family: var(--mono); background: var(--bg-raised); border-radius: var(--radius-xs); padding: 1px 5px; font-size: var(--fs-ui-sm); }
 .part-text pre code { background: none; padding: 0; }
 .part-text blockquote { margin: 0.5em 0; padding: 0.1em 0 0.1em 10px; border-left: 3px solid var(--border-strong); color: var(--text-dim); }
@@ -149,8 +151,8 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .part-text th, .part-text td { border: 1px solid var(--border); padding: 4px 10px; text-align: left; }
 .part-text th { background: var(--bg-raised); font-weight: 600; }
 .part-text hr { border: none; border-top: 1px solid var(--border); margin: 0.8em 0; }
-.part-text a { color: var(--accent); }
-.part-error { color: var(--err); background: var(--err-soft); border: 1px solid var(--err); border-radius: var(--radius-sm); padding: 8px 12px; }
+.part-text a { color: var(--accent-text); }
+.part-error { color: var(--err-text); background: var(--err-soft); border: 1px solid var(--err); border-radius: var(--radius-sm); padding: 8px 12px; }
 .part-error-detail { margin-top: 8px; color: var(--text-dim); font-size: var(--fs-ui-sm); }
 .tool-preview, .tool-live-preview {
   margin: 0; white-space: pre-wrap; font-family: var(--mono); font-size: var(--fs-ui-sm);
@@ -158,11 +160,11 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 }
 .tool-live-preview { margin-top: 6px; }
 .artifact-chip { display: inline-flex; align-items: stretch; background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; font-size: var(--fs-ui-caption); margin: 2px 0; }
-.artifact-chip .ac-main { display: inline-flex; align-items: center; gap: 7px; color: var(--accent); background: none; border: none; padding: 5px 10px; cursor: pointer; font: inherit; max-width: 340px; }
+.artifact-chip .ac-main { display: inline-flex; align-items: center; gap: 7px; color: var(--accent-text); background: none; border: none; padding: 5px 10px; cursor: pointer; font: inherit; max-width: 340px; }
 .artifact-chip .ac-main span, .artifact-chip .ac-main { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
 .artifact-chip:hover { border-color: var(--accent); }
 .artifact-chip .ac-act { display: inline-flex; align-items: center; padding: 5px 8px; color: var(--text-dim); border-left: 1px solid var(--border-soft); background: none; cursor: pointer; }
-.artifact-chip .ac-act:hover { color: var(--accent); background: var(--bg-hover); }
+.artifact-chip .ac-act:hover { color: var(--accent-text); background: var(--bg-hover); }
 
 /* 交付物卡片：主区域与「预览」打开预览区，下载收在菜单里。 */
 .deliverable-card { position: relative; display: flex; align-items: center; gap: 8px; width: fit-content; max-width: 100%; padding: 8px 8px 8px 8px; margin: 6px 0 2px;
@@ -173,8 +175,8 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
   background: var(--bg-inset); color: var(--accent); border: 1px solid var(--border-soft); }
 .deliverable-card .dc-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
 .deliverable-card .dc-name { color: var(--text); font-weight: 600; font-size: var(--fs-ui-base); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 380px; }
-.deliverable-card .dc-meta { color: var(--text-faint); font-size: var(--fs-ui-sm); white-space: nowrap; }
-.deliverable-card .dc-act { flex: none; margin-left: 8px; padding: 5px 12px; border-radius: var(--radius-sm); color: var(--accent);
+.deliverable-card .dc-meta { color: var(--text-dim); font-size: var(--fs-ui-sm); white-space: nowrap; }
+.deliverable-card .dc-act { flex: none; margin-left: 8px; padding: 5px 12px; border-radius: var(--radius-sm); color: var(--accent-text);
   font-size: var(--fs-ui-caption); border: 1px solid var(--border); background: var(--bg-panel); cursor: pointer; }
 .deliverable-card .dc-act:hover:not(:disabled) { border-color: var(--accent); }
 .deliverable-card .dc-act:disabled { opacity: .45; cursor: default; }
@@ -187,35 +189,45 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 /* 工作时间线 */
 .tl-tools { margin: 4px 0; }
 .tl-tools-head { font-size: var(--fs-ui-sm); color: var(--text-dim); }
-.tl-tools-list { margin: 2px 0 0; padding: 0 0 0 16px; color: var(--text-faint); font-size: var(--fs-ui-sm); }
+.tl-tools-list { margin: 2px 0 0; padding: 0 0 0 16px; color: var(--text-dim); font-size: var(--fs-ui-sm); }
 .tl-tools-list li { margin: 1px 0; }
 .tl-tools-name { color: var(--text-dim); }
-.tl-tools-sum { margin-left: 8px; color: var(--text-faint); }
-.tl-check { color: var(--text-faint); font-size: var(--fs-ui-sm); margin: 4px 0; }
-.tl-tools .status-error { margin-left: 8px; color: var(--err); }
+.tl-tools-sum { margin-left: 8px; color: var(--text-dim); }
+.tl-check { color: var(--text-dim); font-size: var(--fs-ui-sm); margin: 4px 0; }
+.tl-tools .status-error { margin-left: 8px; color: var(--err-text); }
 
 /* 对话右侧预览区 */
 .preview-slot { flex-shrink: 0; min-width: 0; display: flex; }
+.preview-slot.expanded { flex: 1 1 auto; width: auto; }
 .preview-pane { flex: 1; min-width: 0; display: flex; flex-direction: column; background: var(--bg); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); overflow: hidden; }
 .preview-pane-bar { display: flex; align-items: center; gap: 8px; padding: 6px 10px; border-bottom: 1px solid var(--border-soft); }
 .preview-pane-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: var(--fs-ui-sm); color: var(--text-dim); }
 .preview-pane-spacer { flex: 1; }
 .preview-pane-body { flex: 1; min-height: 0; overflow: auto; }
-.preview-pane-body .ui-fp { height: 100%; }
+/* 只给下限，不钉死高度：内容超出时由本层滚动。PDF iframe 靠自身 flex:1 撑满。 */
+.preview-pane-body .ui-fp { min-height: 100%; }
 .preview-pane-body .ui-fp-pdf { height: 100%; min-height: 480px; border: none; }
-.docx-wrapper { background: var(--bg-inset) !important; padding: 12px; }
-.docx-wrapper > section.docx { background: var(--bg) !important; color: var(--text); box-shadow: var(--shadow-md); }
+.preview-pane-meta { flex-shrink: 0; font-size: var(--fs-ui-xs); color: var(--text-faint); text-transform: capitalize; }
+.preview-pane-dirty { color: var(--warn-text); font-size: var(--fs-ui-sm); }
+.preview-pane-editor {
+  display: block; width: 100%; height: 100%; min-height: 0; resize: none;
+  font-family: var(--mono); font-size: var(--fs-code); background: var(--bg); color: var(--text);
+}
+.docx-wrapper { background: var(--bg-inset) !important; padding: 12px; display: flex; flex-direction: column; align-items: flex-start !important; }
+/* 宽栏时纸张居中。auto margin 优先于 align-items；栏比纸窄时剩余空间为负，margin 归零，
+   纸张仍贴左，previewfit 的 transform-origin: top left 不用改。 */
+.docx-wrapper > section.docx { background: var(--paper) !important; color: var(--paper-ink); box-shadow: var(--shadow-md); margin-inline: auto; }
 /* 过程段内联组（流式/关闭自动折叠时，按原位渲染的过程容器） */
 .part-group { margin: 2px 0; }
 
 /* 过程折叠（run 终态后；Collapsible 契约：触发行 + mk-col 动画体） */
 .process-collapse { border: 1px solid var(--border-soft); border-radius: var(--radius); background: var(--bg-panel); margin: 6px 0; }
-.process-collapse .process-collapse-summary { padding: 7px 12px; color: var(--text-faint); font-size: var(--fs-ui-sm); user-select: none; }
+.process-collapse .process-collapse-summary { padding: 7px 12px; color: var(--text-dim); font-size: var(--fs-ui-sm); user-select: none; }
 .process-collapse .process-collapse-summary:hover { color: var(--text-dim); }
 .process-collapse .process-collapse-chev { display: inline-flex; color: var(--text-faint); font-size: var(--fs-ui-xs); transition: transform .12s; }
 .process-collapse .mk-col-trigger[aria-expanded="true"] .process-collapse-chev { transform: rotate(90deg); }
-.process-collapse .process-collapse-meta { color: var(--text-faint); }
-.process-collapse .process-collapse-excerpt { color: var(--text-faint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 40%; }
+.process-collapse .process-collapse-meta { color: var(--text-dim); }
+.process-collapse .process-collapse-excerpt { color: var(--text-dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 40%; }
 .process-collapse .body { padding: 4px 12px 10px; }
 
 /* 流式状态行（呼吸/扫光走 mk-* 类；已工作计时弱色等宽） */
@@ -228,7 +240,7 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .hitl-card { border: 1px solid var(--ok-border); background: var(--ok-soft); border-radius: var(--radius-lg); padding: 14px; margin: 10px 0; }
 .hitl-card.wait { border-color: var(--wait); background: var(--wait-soft); }
 .hitl-card.ask { border-color: var(--border-strong); background: var(--bg-raised); }
-.hitl-detail { white-space: pre-wrap; margin: 8px 0 0; font-size: var(--fs-ui-sm); color: var(--text-faint); font-family: inherit; }
+.hitl-detail { white-space: pre-wrap; margin: 8px 0 0; font-size: var(--fs-ui-sm); color: var(--text-dim); font-family: inherit; }
 .mode-select { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-ui-sm); color: var(--text-faint); }
 .mode-select select { font-size: var(--fs-ui-sm); color: var(--text); background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 4px 8px; }
 .hitl-q { font-weight: 600; margin-bottom: 10px; display: flex; gap: 8px; align-items: flex-start; }
@@ -238,8 +250,8 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .hitl-choice:hover { border-color: var(--accent); background: var(--accent-soft); }
 .hitl-choice .label { font-weight: 600; display: flex; gap: 8px; align-items: center; }
 .hitl-choice .desc { color: var(--text-dim); font-size: var(--fs-ui-sm); margin-top: 3px; }
-.hitl-choice .impact { color: var(--warn); font-size: var(--fs-ui-sm); margin-top: 3px; }
-.hitl-choice .rec { font-size: var(--fs-ui-xs); color: var(--accent); border: 1px solid var(--accent); padding: 0 5px; border-radius: var(--radius-full); }
+.hitl-choice .impact { color: var(--warn-text); font-size: var(--fs-ui-sm); margin-top: 3px; }
+.hitl-choice .rec { font-size: var(--fs-ui-xs); color: var(--accent-text); border: 1px solid var(--accent); padding: 0 5px; border-radius: var(--radius-full); }
 .hitl-free { display: flex; gap: 8px; margin-top: 10px; }
 
 /* 输入区：悬浮卡片式输入壳（16px 大圆角 = DESIGN.md 特批例外） */
@@ -258,7 +270,7 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .cmd-menu { border: 1px solid var(--border); background: var(--bg-raised); border-radius: var(--radius); margin-bottom: 6px; max-height: 180px; overflow-y: auto; box-shadow: var(--shadow-md); }
 .cmd-item { padding: 7px 12px; cursor: pointer; display: flex; gap: 10px; font-size: var(--fs-ui-caption); }
 .cmd-item:hover, .cmd-item.active { background: var(--bg-hover); }
-.cmd-item .name { color: var(--accent); font-family: var(--mono); }
+.cmd-item .name { color: var(--accent-text); font-family: var(--mono); }
 
 /* ---- 右栏 ---- */
 .tabs { display: flex; border-bottom: 1px solid var(--border-soft); overflow-x: auto; padding: 0 8px; }
@@ -269,8 +281,8 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .step { display: flex; gap: 8px; align-items: flex-start; padding: 6px 4px; font-size: var(--fs-ui-caption); }
 .step-icon { width: 16px; text-align: center; flex-shrink: 0; }
 .step.pending .step-icon { color: var(--text-faint); }
-.step.in_progress .step-icon { color: var(--accent); }
-.step.done .step-icon { color: var(--ok); }
+.step.in_progress .step-icon { color: var(--accent-text); }
+.step.done .step-icon { color: var(--ok-text); }
 .step.skipped { color: var(--text-faint); text-decoration: line-through; }
 /* ---- 工件面板（工作区文件管理）---- */
 .artifacts-panel { display: flex; flex-direction: column; gap: 4px; }
@@ -278,19 +290,19 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .ap-toolbar .search-input { flex: 1; min-width: 120px; height: 30px; font-size: var(--fs-ui-sm); }
 .kind-pill { border: 1px solid var(--border); background: none; color: var(--text-dim); border-radius: var(--radius-full); padding: 3px 10px; font-size: var(--fs-ui-sm); cursor: pointer; }
 .kind-pill:hover { color: var(--text); background: var(--bg-hover); }
-.kind-pill.on { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
+.kind-pill.on { color: var(--accent-text); border-color: var(--accent); background: var(--accent-soft); }
 .ap-upload { cursor: pointer; }
 .artifact-row { display: flex; align-items: center; gap: 8px; padding: 7px 8px; border-radius: var(--radius-sm); }
 .artifact-row:hover { background: var(--bg-hover); }
 .artifact-row .ar-icon { display: flex; color: var(--text-dim); cursor: pointer; flex: none; }
 .artifact-row .ar-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 1px; cursor: pointer; }
 .artifact-row .name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: var(--fs-ui-caption); }
-.artifact-row .meta { font-size: var(--fs-ui-xs); color: var(--text-faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.artifact-row .meta { font-size: var(--fs-ui-sm); color: var(--text-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
 .artifact-row .ar-acts { display: none; align-items: center; gap: 2px; flex: none; }
 .artifact-row:hover .ar-acts { display: inline-flex; }
 .artifact-row .ar-acts .icon-btn { width: 26px; height: 26px; }
-.artifact-row .ar-acts .icon-btn.danger { color: var(--err); }
-.empty-note { color: var(--text-faint); font-size: var(--fs-ui-sm); padding: 14px 6px; }
+.artifact-row .ar-acts .icon-btn.danger { color: var(--err-text); }
+.empty-note { color: var(--text-dim); font-size: var(--fs-ui-sm); padding: 14px 6px; }
 .agent-row { display: flex; align-items: center; gap: 8px; padding: 8px; border-radius: var(--radius-sm); cursor: pointer; font-size: var(--fs-ui-caption); }
 .agent-row:hover { background: var(--bg-hover); }
 .status-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
@@ -315,20 +327,8 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .ui-setting-control input:focus, .ui-setting-control select:focus { border-color: var(--accent); box-shadow: var(--ring); outline: none; }
 .ui-setting-control input[type="checkbox"] { width: auto; }
 .effect-badge { font-size: var(--fs-ui-xs); padding: 2px 7px; border-radius: var(--radius-full); border: 1px solid var(--border); color: var(--text-faint); white-space: nowrap; }
-.effect-hot { color: var(--ok); border-color: var(--ok); }
-.effect-new-run { color: var(--warn); border-color: var(--warn); }
-
-/* ---- 文档查看器（单层 OverlayHost 内）---- */
-.docv { display: flex; flex-direction: column; min-height: 0; }
-.docv-toolbar { display: flex; align-items: center; gap: 8px; padding: 0 0 10px; border-bottom: 1px solid var(--border-soft); margin-bottom: 10px; }
-.docv-toolbar .spacer { flex: 1; }
-.docv-meta { font-size: var(--fs-ui-xs); color: var(--text-faint); text-transform: capitalize; }
-.docv-dirty { color: var(--warn); font-size: var(--fs-ui-sm); }
-.docv-dl { text-decoration: none; }
-.docv-body { flex: 1; min-height: 0; overflow: auto; }
-.docv-pdf { width: 100%; height: 100%; min-height: 60vh; border: 1px solid var(--border-soft); border-radius: var(--radius); background: var(--bg); }
-.docv-editor { width: 100%; height: 56vh; font-family: var(--mono); font-size: var(--fs-ui-sm); resize: vertical; }
-.docv-pre { font-family: var(--mono); font-size: var(--fs-ui-sm); white-space: pre-wrap; word-break: break-word; background: var(--bg-inset); border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 12px 14px; }
+.effect-hot { color: var(--ok-text); border-color: var(--ok); }
+.effect-new-run { color: var(--warn-text); border-color: var(--warn); }
 
 /* ---- 杂项 ---- */
 .toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--bg-raised); border: 1px solid var(--border); color: var(--text); padding: 9px 16px; border-radius: var(--radius-full); box-shadow: var(--shadow-lg); z-index: 90; font-size: var(--fs-ui-caption); }
@@ -351,18 +351,18 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .tsb-name { font-weight: 650; font-size: var(--fs-ui-caption); letter-spacing: -0.01em; }
 .tsb-iconbtn { width: 26px; height: 26px; border-radius: var(--radius-sm); background: none; border: none; color: var(--text-faint); cursor: pointer; font-size: var(--fs-ui-caption); display: inline-flex; align-items: center; justify-content: center; position: relative; }
 .tsb-iconbtn:hover { background: var(--bg-hover); color: var(--text); }
-.tsb-iconbtn.active { color: var(--accent); background: var(--accent-soft); }
+.tsb-iconbtn.active { color: var(--accent-sidebar); background: var(--accent-soft); }
 
 .tsb-actions { padding: 6px 12px 8px; display: flex; flex-direction: column; gap: 7px; }
-.tsb-newtask { display: flex; height: 36px; border-radius: var(--radius); background: var(--primary); color: var(--primary-foreground); overflow: hidden; box-shadow: 0 1px 3px rgba(0, 0, 0, .3); transition: background .12s; }
-.tsb-newtask:hover { background: color-mix(in srgb, var(--primary) 86%, var(--bg)); }
+.tsb-newtask { display: flex; height: 36px; border-radius: var(--radius); background: var(--primary-sidebar); color: var(--primary-sidebar-foreground); overflow: hidden; box-shadow: 0 1px 3px rgba(0, 0, 0, .3); transition: background .12s; }
+.tsb-newtask:hover { background: color-mix(in srgb, var(--primary-sidebar) 86%, var(--bg-sidebar)); }
 .tsb-newtask-main { flex: 1; display: flex; align-items: center; gap: 7px; padding: 0 11px; background: none; border: none; color: inherit; font-weight: 600; font-size: var(--fs-ui-caption); cursor: pointer; min-width: 0; }
 .tsb-newtask-main svg { flex: none; }
 .tsb-newtask-proj { font-weight: 450; font-size: var(--fs-ui-xs); opacity: .75; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
-.tsb-newtask-caret { width: 30px; border: none; border-left: 1px solid color-mix(in srgb, var(--primary-foreground) 18%, transparent); background: none; color: inherit; cursor: pointer; display: flex; align-items: center; justify-content: center; }
-.tsb-newtask-caret:hover { background: color-mix(in srgb, var(--primary-foreground) 8%, transparent); }
+.tsb-newtask-caret { width: 30px; border: none; border-left: 1px solid color-mix(in srgb, var(--primary-sidebar-foreground) 18%, transparent); background: none; color: inherit; cursor: pointer; display: flex; align-items: center; justify-content: center; }
+.tsb-newtask-caret:hover { background: color-mix(in srgb, var(--primary-sidebar-foreground) 8%, transparent); }
 .tsb-search { display: flex; align-items: center; gap: 7px; height: 32px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg-raised); color: var(--text-faint); padding: 0 10px; transition: border-color .12s, box-shadow .12s; }
-.tsb-search:focus-within { border-color: var(--accent); box-shadow: var(--ring); }
+.tsb-search:focus-within { border-color: var(--accent-sidebar); box-shadow: var(--ring); }
 .tsb-search svg { flex: none; }
 .tsb-search input { flex: 1; border: none; background: none; color: var(--text); font-size: var(--fs-ui-sm); outline: none; min-width: 0; }
 .tsb-search input::placeholder { color: var(--text-faint); }
@@ -374,8 +374,8 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .tsb-pill.on { background: var(--bg-raised); color: var(--text); font-weight: 550; box-shadow: 0 1px 2px rgba(0,0,0,.25); }
 
 .tsb-scroll { flex: 1; overflow-y: auto; padding: 0 10px 8px; min-height: 0; }
-.tsb-seclabel { font-size: var(--fs-ui-xs); color: var(--text-faint); padding: 12px 8px 4px; letter-spacing: .05em; font-weight: 600; }
-.tsb-empty { padding: 20px 14px; color: var(--text-faint); font-size: var(--fs-ui-sm); line-height: 1.9; text-align: center; }
+.tsb-seclabel { font-size: var(--fs-ui-sm); color: var(--text-dim); padding: 12px 8px 4px; font-weight: 600; }
+.tsb-empty { padding: 20px 14px; color: var(--text-dim); font-size: var(--fs-ui-sm); line-height: 1.9; text-align: center; }
 .tsb-newproject { padding: 0 2px 8px; }
 
 .tsb-group { margin-bottom: 2px; }
@@ -392,11 +392,11 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .tsb-task { display: flex; align-items: center; gap: 8px; height: 31px; padding: 0 8px; margin: 1px 0; border-radius: var(--radius-sm); color: var(--text-dim); cursor: pointer; position: relative; transition: background .1s, color .1s; }
 .tsb-task:hover { background: var(--bg-hover); color: var(--text); }
 .tsb-task.active { background: var(--bg-active); color: var(--text); }
-.tsb-task.active::before { content: ''; position: absolute; left: -2px; top: 6px; bottom: 6px; width: 2.5px; border-radius: 2px; background: var(--accent); }
+.tsb-task.active::before { content: ''; position: absolute; left: -2px; top: 6px; bottom: 6px; width: 2.5px; border-radius: 2px; background: var(--accent-sidebar); }
 .tsb-task.archived .tsb-task-t { text-decoration: line-through; opacity: .6; }
 .tsb-task-t { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: var(--fs-ui-caption); }
 .tsb-task-tm { font-size: var(--fs-ui-xs); color: var(--text-faint); font-variant-numeric: tabular-nums; }
-.tsb-pbadge { font-size: var(--fs-ui-xs); color: var(--text-faint); border: 1px solid var(--border); border-radius: var(--radius-xs); padding: 0 5px; line-height: 1.5; white-space: nowrap; }
+.tsb-pbadge { font-size: var(--fs-ui-xs); color: var(--text-dim); border: 1px solid var(--border); border-radius: var(--radius-xs); padding: 0 5px; line-height: 1.5; white-space: nowrap; }
 .tsb-row-acts { display: none; gap: 2px; }
 .tsb-task:hover .tsb-row-acts { display: inline-flex; }
 .tsb-task:hover .tsb-task-tm { display: none; }
@@ -412,14 +412,17 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .tsb-user-sub { font-size: var(--fs-ui-xs); color: var(--text-faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
 .tsb-user-chev { color: var(--text-faint); display: inline-flex; }
 
-.tsb-menu { position: fixed; z-index: 300; min-width: 216px; background: var(--bg-raised); border: 1px solid var(--border-strong); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 5px; display: flex; flex-direction: column; animation: mk-modal-in .12s var(--ease); }
+.tsb-menu { position: fixed; z-index: 300; min-width: 216px; background: var(--bg-raised); border: 1px solid var(--border-strong); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 5px; display: flex; flex-direction: column; animation: mk-modal-in .12s var(--ease);
+  /* 菜单挂在侧栏里，但纸面是主区底。侧栏对 --text* 的重映射不能漏进来。 */
+  --text: var(--text-workspace); --text-dim: var(--text-workspace-dim); --text-faint: var(--text-workspace-faint);
+  color: var(--text-workspace); }
 .tsb-mi { display: flex; align-items: center; gap: 9px; min-height: 31px; padding: 4px 9px; border: none; border-radius: var(--radius-sm); background: none; color: var(--text-dim); font-size: var(--fs-ui-caption); cursor: pointer; text-align: left; }
 .tsb-mi svg { color: var(--text-faint); flex: none; }
 .tsb-mi:hover { background: var(--bg-hover); color: var(--text); }
 .tsb-mi:hover svg { color: var(--text-dim); }
-.tsb-mi.danger { color: var(--err); }
-.tsb-mi.danger:hover { background: var(--err); color: var(--text-on-accent); }
-.tsb-mi.danger:hover svg { color: var(--text-on-accent); }
+.tsb-mi.danger { color: var(--err-text); }
+.tsb-mi.danger:hover { background: var(--err-text); color: var(--text-on-semantic); }
+.tsb-mi.danger:hover svg { color: var(--text-on-semantic); }
 .tsb-mi kbd { margin-left: auto; font-size: var(--fs-ui-xs); font-family: var(--mono); color: var(--text-faint); }
 .tsb-menu-div { height: 1px; background: var(--border-soft); margin: 5px 4px; }
 .tsb-acc-head { display: flex; gap: 10px; align-items: center; padding: 8px 9px 6px; }
@@ -451,7 +454,7 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .lg-input { width: 100%; height: 38px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg-raised); color: var(--text); padding: 0 12px; font-size: var(--fs-ui-caption); transition: border-color .12s, box-shadow .12s; }
 .lg-input:focus { border-color: var(--accent); box-shadow: var(--ring); outline: none; }
 .lg-mono { font-family: var(--mono); font-size: var(--fs-ui-sm); }
-.lg-err { margin-top: 12px; font-size: var(--fs-ui-sm); color: var(--err); background: var(--err-soft); border: 1px solid color-mix(in srgb, var(--err) 35%, transparent); border-radius: var(--radius); padding: 8px 11px; display: flex; gap: 7px; align-items: flex-start; }
+.lg-err { margin-top: 12px; font-size: var(--fs-ui-sm); color: var(--err-text); background: var(--err-soft); border: 1px solid color-mix(in srgb, var(--err) 35%, transparent); border-radius: var(--radius); padding: 8px 11px; display: flex; gap: 7px; align-items: flex-start; }
 .lg-err svg { flex: none; margin-top: 1px; }
 .lg-submit {
   width: 100%; height: 38px; margin-top: 16px; border: none; border-radius: var(--radius);
@@ -478,7 +481,7 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .az-nav-item { display: flex; align-items: center; gap: 9px; padding: 9px 11px; border: none; background: none; color: var(--text-dim); font-size: var(--fs-ui-caption); border-radius: var(--radius-sm); cursor: pointer; text-align: left; }
 .az-nav-item:hover { background: var(--bg-hover); color: var(--text); }
 .az-nav-item.on { background: var(--bg-active); color: var(--text); font-weight: 550; }
-.az-nav-item.on svg { color: var(--accent); }
+.az-nav-item.on svg { color: var(--accent-text); }
 .az-main { flex: 1; min-width: 0; overflow-y: auto; padding: 20px 24px; }
 .az-section-head { margin-bottom: 14px; }
 .az-section-head h3 { margin: 0 0 4px; font-size: var(--fs-ui-lg); font-weight: 600; letter-spacing: -0.01em; }
@@ -493,18 +496,18 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .ad-create-btn { width: auto; padding: 0 14px; margin-top: 0; height: 34px; flex: none; }
 .ad-mini { border: 1px solid var(--border); background: var(--bg-raised); color: var(--text-dim); border-radius: var(--radius-sm); padding: 4px 9px; font-size: var(--fs-ui-sm); cursor: pointer; white-space: nowrap; display: inline-flex; align-items: center; gap: 4px; }
 .ad-mini:hover { color: var(--text); border-color: var(--accent); }
-.ad-hint { margin: 0; font-size: var(--fs-ui-xs); color: var(--text-faint); }
-.ad-notice { font-size: var(--fs-ui-sm); color: var(--ok); background: var(--ok-soft); border: 1px solid var(--ok-border); border-radius: var(--radius); padding: 8px 11px; display: flex; gap: 7px; align-items: flex-start; }
+.ad-hint { margin: 0; font-size: var(--fs-ui-sm); color: var(--text-dim); }
+.ad-notice { font-size: var(--fs-ui-sm); color: var(--ok-text); background: var(--ok-soft); border: 1px solid var(--ok-border); border-radius: var(--radius); padding: 8px 11px; display: flex; gap: 7px; align-items: flex-start; }
 .ad-notice svg { flex: none; margin-top: 1px; }
 .ad-table { width: 100%; border-collapse: collapse; font-size: var(--fs-ui-sm); }
-.ad-table th { text-align: left; font-weight: 600; color: var(--text-faint); font-size: var(--fs-ui-xs); text-transform: uppercase; letter-spacing: .06em; padding: 8px; border-bottom: 1px solid var(--border); }
+.ad-table th { text-align: left; font-weight: 600; color: var(--text-dim); font-size: var(--fs-ui-sm); padding: 8px; border-bottom: 1px solid var(--border); }
 .ad-table td { padding: 9px 8px; border-bottom: 1px solid var(--border-soft); }
 .ad-table tr:last-child td { border-bottom: none; }
 .ad-mono { font-family: var(--mono); font-size: var(--fs-ui-sm); }
-.ad-dim { color: var(--text-faint); }
-.ad-chip { font-size: var(--fs-ui-xs); border-radius: var(--radius-xs); padding: 2px 7px; font-weight: 700; letter-spacing: .5px; background: var(--bg-hover); color: var(--text-faint); }
-.ad-chip-admin { background: var(--accent-soft); color: var(--accent); }
-.ad-chip-warn { background: var(--warn-soft); color: var(--warn); }
+.ad-dim { color: var(--text-dim); }
+.ad-chip { font-size: var(--fs-ui-xs); border-radius: var(--radius-xs); padding: 2px 7px; font-weight: 700; letter-spacing: .5px; background: var(--bg-hover); color: var(--text-dim); }
+.ad-chip-admin { background: var(--accent-soft); color: var(--accent-text); }
+.ad-chip-warn { background: var(--warn-soft); color: var(--warn-text); }
 .ad-reset { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent); background: var(--warn-soft); border-radius: var(--radius-lg); padding: 12px; font-size: var(--fs-ui-sm); }
 .ad-reset .lg-input { flex: 1; min-width: 160px; height: 32px; }
 .ad-changepw { display: flex; flex-direction: column; gap: 2px; max-width: 340px; }
@@ -513,7 +516,7 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .icon-only { display: flex; flex-direction: column; align-items: center; gap: 6px; padding-top: 12px; }
 .icon-only button { background: none; border: none; color: var(--text-faint); cursor: pointer; padding: 0; width: 34px; height: 34px; border-radius: var(--radius); display: inline-flex; align-items: center; justify-content: center; position: relative; }
 .icon-only button:hover { background: var(--bg-hover); color: var(--text); }
-.rail-badge { position: absolute; top: 3px; right: 3px; min-width: 14px; height: 14px; border-radius: 7px; background: var(--warn); color: var(--text-on-accent); font-size: var(--fs-ui-xs); font-weight: 700; display: flex; align-items: center; justify-content: center; padding: 0 4px; }
+.rail-badge { position: absolute; top: 3px; right: 3px; min-width: 14px; height: 14px; border-radius: 7px; background: var(--warn-text); color: var(--text-on-semantic); font-size: var(--fs-ui-xs); font-weight: 700; display: flex; align-items: center; justify-content: center; padding: 0 4px; }
 
 /* ---- UI 能力平台消费（消息头像列 / 设置外壳 / 管理弹层头像） ---- */
 .role-mark { width: 20px; height: 20px; border-radius: 6px; display: inline-flex; align-items: center; justify-content: center; color: var(--text-dim); background: var(--bg-raised); border: 1px solid var(--border); }
@@ -540,7 +543,7 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .tsb-project:hover { background: var(--bg-hover); }
 .tsb-project.active { background: var(--bg-active); }
 .tsb-project-name { font-weight: 600; font-size: var(--fs-ui-sm); }
-.tsb-project-meta { color: var(--text-faint); font-size: var(--fs-ui-xs); }
+.tsb-project-meta { color: var(--text-dim); font-size: var(--fs-ui-xs); }
 .tsb-tool {
   display: flex; align-items: center; gap: 8px; width: 100%;
   background: none; border: none; cursor: pointer; color: inherit;
@@ -548,10 +551,10 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 }
 .tsb-tool:hover { background: var(--bg-hover); }
 .tsb-tool kbd { margin-left: auto; font-family: var(--mono); font-size: var(--fs-ui-xs); color: var(--text-faint); }
-.tsb-tool-note { color: var(--text-faint); font-size: var(--fs-ui-xs); padding: 2px 10px 8px; }
+.tsb-tool-note { color: var(--text-dim); font-size: var(--fs-ui-xs); padding: 2px 10px 8px; }
 .tsb-tool-badge {
   margin-left: 6px; min-width: 16px; padding: 0 5px; border-radius: var(--radius-full);
-  background: var(--err); color: var(--text-on-accent); font-size: var(--fs-ui-xs);
+  background: var(--err-text); color: var(--text-on-semantic); font-size: var(--fs-ui-xs);
 }
 .rewind-row { margin-top: 8px; }
 .rewind-panel {
@@ -564,4 +567,4 @@ button { font-family: inherit; font-size: inherit; color: inherit; }
 .msg-tools { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; margin-top: 4px; }
 .session-note { width: 12rem; }
 .rewind-actions { display: flex; gap: 8px; }
-.rewind-error { color: var(--err); font-size: var(--fs-ui-sm); }
+.rewind-error { color: var(--err-text); font-size: var(--fs-ui-sm); }

test/previewfit.test.ts

@@ -0,0 +1,110 @@
+import { afterEach, describe, it, expect } from 'vitest'
+import { computeFitScale, fitPagesToWidth } from '../src/previewfit'
+
+describe('computeFitScale', () => {
+  it('keeps the page at 100% when the column is wider than the page', () => {
+    expect(computeFitScale(1100, 794, 24)).toBe(1)
+    expect(computeFitScale(818, 794, 24)).toBe(1)
+  })
+
+  it('scales the page down to the column width after subtracting the gutter', () => {
+    expect(computeFitScale(420, 794, 24)).toBeCloseTo((420 - 24) / 794)
+    expect(computeFitScale(794, 794, 24)).toBeCloseTo((794 - 24) / 794)
+  })
+
+  it('does not invert or zoom when the width is unusable', () => {
+    expect(computeFitScale(0, 794, 24)).toBe(1)
+    expect(computeFitScale(20, 794, 24)).toBe(1)
+    expect(computeFitScale(420, 0, 24)).toBe(1)
+    expect(computeFitScale(Number.NaN, 794, 24)).toBe(1)
+  })
+})
+
+// node 测试环境没有 DOM。这里只实现 fitPagesToWidth 会碰到的查询与尺寸。
+class FakeEl {
+  style: { height: string; overflow: string; minHeight: string; transform: string; transformOrigin: string } = {
+    height: '', overflow: '', minHeight: '', transform: '', transformOrigin: '',
+  }
+  clientWidth = 0
+  offsetWidth = 0
+  offsetHeight = 0
+  className = ''
+  tag = 'div'
+  children: FakeEl[] = []
+  querySelector(sel: string): FakeEl | null {
+    const walk = (nodes: FakeEl[]): FakeEl | null => {
+      for (const node of nodes) {
+        if (matches(node, sel)) return node
+        const hit = walk(node.children)
+        if (hit) return hit
+      }
+      return null
+    }
+    return walk(this.children)
+  }
+}
+
+function matches(el: FakeEl, sel: string): boolean {
+  const classes = el.className.split(/\s+/).filter(Boolean)
+  if (sel.startsWith('.')) return classes.includes(sel.slice(1))
+  const [tag, cls] = sel.split('.')
+  return el.tag === tag && classes.includes(cls)
+}
+
+class FakeResizeObserver {
+  static observed: FakeEl[] = []
+  static instances: FakeResizeObserver[] = []
+  constructor(private callback: () => void) {
+    FakeResizeObserver.instances.push(this)
+  }
+  observe(el: FakeEl) { FakeResizeObserver.observed.push(el) }
+  disconnect() { /* dispose 只要求卸下监听 */ }
+  static fire() {
+    for (const instance of FakeResizeObserver.instances) instance.callback()
+  }
+  static reset() {
+    FakeResizeObserver.observed = []
+    FakeResizeObserver.instances = []
+  }
+}
+
+describe('fitPagesToWidth', () => {
+  const previous = globalThis.ResizeObserver
+
+  afterEach(() => {
+    FakeResizeObserver.reset()
+    globalThis.ResizeObserver = previous
+  })
+
+  it('recomputes the host height when the page wrapper grows and clears inline styles on dispose', () => {
+    globalThis.ResizeObserver = FakeResizeObserver as unknown as typeof ResizeObserver
+    const host = new FakeEl()
+    host.clientWidth = 420
+    const wrapper = new FakeEl()
+    wrapper.className = 'docx-wrapper'
+    wrapper.offsetHeight = 1000
+    const page = new FakeEl()
+    page.tag = 'section'
+    page.className = 'docx'
+    page.offsetWidth = 794
+    wrapper.children.push(page)
+    host.children.push(wrapper)
+
+    const dispose = fitPagesToWidth(host as unknown as HTMLElement, host as unknown as HTMLElement)
+    const scale = (420 - 24) / 794
+    expect(host.style.height).toBe(`${Math.round(1000 * scale)}px`)
+    expect(host.style.overflow).toBe('hidden')
+    expect(FakeResizeObserver.observed).toContain(wrapper)
+
+    wrapper.offsetHeight = 1500
+    FakeResizeObserver.fire()
+    expect(host.style.height).toBe(`${Math.round(1500 * scale)}px`)
+
+    dispose()
+    expect(host.style.height).toBe('')
+    expect(host.style.overflow).toBe('')
+    expect(host.style.minHeight).toBe('')
+    expect(wrapper.style.transform).toBe('')
+    expect(wrapper.style.transformOrigin).toBe('')
+  })
+})

tsconfig.tsbuildinfo

@@ -1 +0,0 @@
-{"root":["./src/App.tsx","./src/api.ts","./src/auth.ts","./src/contracts.ts","./src/live.ts","./src/main.tsx","./src/messageparts.ts","./src/outbox.ts","./src/passwords.ts","./src/pluginHost.ts","./src/previewsetup.ts","./src/previewtabs.ts","./src/projectmeta.ts","./src/runstate.test.ts","./src/runstate.ts","./src/scrollsync.ts","./src/store.ts","./src/tasklist.ts","./src/theme.ts","./src/toolkind.ts","./src/workspaces.ts","./src/components/AdminUsersModal.tsx","./src/components/AdminZone.tsx","./src/components/AgentTracker.tsx","./src/components/ArtifactsPanel.tsx","./src/components/BorrowPanels.tsx","./src/components/Conversation.tsx","./src/components/DocViewer.tsx","./src/components/LoginPage.tsx","./src/components/PreviewPane.tsx","./src/components/ProcessTimeline.tsx","./src/components/ProjectSettingsModal.tsx","./src/components/SettingsModal.tsx","./src/components/TaskSidebar.tsx","./src/components/TopBar.tsx","./src/components/Workbench.tsx","./src/components/Workspaces.tsx","./src/components/adminSections.tsx","./test/auth.test.ts","./test/contracts.test.ts","./test/design-guard.test.ts","./test/html-sinks.test.ts","./test/live.test.ts","./test/messageparts.test.ts","./test/notice.test.ts","./test/outbox.test.ts","./test/previewtabs.test.ts","./test/scrollsync.test.ts","./test/send.test.ts","./test/tasklist.test.ts","./test/theme.test.ts","./test/toolkind.test.ts","./test/workspaces.test.ts"],"version":"5.9.3"}