fix(tui): per-file polish round 5 — routes/session/

TextPart tableOptions snapshotted theme.border at setup, freezing the
table border color across theme switches; wrap it in createMemo. Guard
the revert branch and dialog-message revert/copy/fork reduce sites with
?? [] so an unloaded message part list no longer throws.

Author: edy

MERGE.md

@@ -200,6 +200,7 @@ fork 与上游改了同一处（常见于 TUI 视觉/UX、core 加固逻辑）
 | 逐文件打磨轮2：`component/{dialog-workspace-create,dialog-console-org,dialog-mcp,dialog-retry-action,dialog-session-rename,dialog-workspace-unavailable,dialog-status,spinner,bg-pulse-render,error-component,todo-item,workspace-label}.ts(x)` | 中 | 保留 bug 修复：dialog-workspace-create 最近工作区按连接状态过滤 + 空 adapters 用 `<Show>` 包裹；dialog-console-org 切换失败弹 error toast；dialog-session-rename 重命名失败弹 error toast；dialog-workspace-unavailable 恢复成功后关闭对话框；dialog-retry-action `selectedForeground` 惰值改响应式；error-component 复制失败重置 Copied 态 + ✖ 改 `GLYPH.cross`；todo-item icon/color/attrs 改派生函数（响应式）；删除死代码（dialog-mcp 未用 setRef、dialog-status 空 Props 类型、spinner SPINNER_FRAMES 别名、workspace-label 未用组件、bg-pulse-render 死导出与未用 cache:false 分支）（上游若已做可取上游版本） |
 | 逐文件打磨轮3：`component/prompt/{autocomplete,index,move,workspace}.tsx` + 删除 `component/prompt/creating-dots.ts`、`component/workspace-label.tsx` | 中 | 保留 bug 修复：autocomplete `<Index>` 行内 8 个 setup 期常量改派生函数（行复用时 label/图标/颜色冻结）+ files resource 源补 `store.visible`（弹窗打开且查询未变时不刷新）；index shell/斜杠命令失败补 error toast（原静默丢输入）+ extmark 样式 ID 改访问器（主题切换后指向已销毁 SyntaxStyle）+ interrupt 双击计数器补 clearTimeout/onCleanup（陈旧定时器清零新计数）+ 内联 reduce 换用 `expandPastedTextPlaceholders` + `basename ?? "image"` 改 `\|\|`；workspace 死 notice 改为成功 warp 弹 success toast（原 showNotice 从未渲染）；删除死代码（Autocomplete sessionID prop、AutocompleteOption.disabled、move creatingDots/pendingNew、workspace label memo、creating-dots.ts 与 workspace-label.tsx 整文件）（上游若已做可取上游版本） |
 | 逐文件打磨轮4：`context/{sync,sdk,project,local,theme,route}.tsx` | 高/中 | 保留 bug 修复：sync `message.removed`/`message.part.removed` 补 `if (!messages/!parts) break`（未加载会话/被驱逐消息触发 `search(undefined)` 抛错杀死事件循环）+ `lsp.updated` 改无条件调用 debounce（默认无 workspace 时 LSP 状态不再刷新的回归）+ 会话列表排序改用与二分查找一致的码位比较（localeCompare 大小写次序不一致）；sdk `onCleanup` 移出 `await` 之后（owner 已失效导致订阅永不清理）+ SSE 重连循环连接/迭代包 try/catch 并在收到事件后重置退避（一次网络错误即永久断连）；project/local 事件订阅补 onCleanup；删除死代码（LocalTheme、RouteContext、SyncContext 解构、theme_mode 只写不读的持久化）（上游若已做可取上游版本） |
+| 逐文件打磨轮5：`routes/session/{index,dialog-message}.tsx` | 中 | 保留 bug 修复：TextPart `tableOptions` 由 setup 期字面量改 `createMemo`（原 `theme.border` 快照在主题切换后冻结表格边框色）；`index.tsx` revert 分支与 `dialog-message.tsx` revert/copy/fork 四处 `sync.data.part[id].reduce` 补 `?? []`（消息 part 未加载时 `.reduce` 抛错）；moveChild 方向语义（`- direction`）疑似与命令名相反但属上游行为，择要跳过（上游若已做可取上游版本） |
 
 ### 其他
 

packages/tui/src/routes/session/dialog-message.tsx

@@ -36,7 +36,7 @@ export function DialogMessage(props: {
             })
 
             if (props.setPrompt) {
-              const parts = sync.data.part[msg.id]
+              const parts = sync.data.part[msg.id] ?? []
               const promptInfo = parts.reduce(
                 (agg, part) => {
                   if (part.type === "text") {
@@ -61,7 +61,7 @@ export function DialogMessage(props: {
             const msg = message()
             if (!msg) return
 
-            const parts = sync.data.part[msg.id]
+            const parts = sync.data.part[msg.id] ?? []
             const text = parts.reduce((agg, part) => {
               if (part.type === "text" && !part.synthetic) {
                 agg += part.text
@@ -84,7 +84,7 @@ export function DialogMessage(props: {
             })
             const msg = message()
             const prompt = msg
-              ? sync.data.part[msg.id].reduce(
+              ? (sync.data.part[msg.id] ?? []).reduce(
                   (agg, part) => {
                     if (part.type === "text") {
                       if (!part.synthetic) agg.input += part.text

packages/tui/src/routes/session/index.tsx

@@ -555,7 +555,7 @@ export function Session() {
           .then(() => {
             toBottom()
           })
-        const parts = sync.data.part[message.id]
+        const parts = sync.data.part[message.id] ?? []
         prompt?.set(
           parts.reduce(
             (agg, part) => {
@@ -1658,13 +1658,13 @@ function TextPart(props: { last: boolean; part: TextPart; message: AssistantMess
   const local = useLocal()
   const { theme, syntax } = useTheme()
   const color = createMemo(() => local.agent.color(props.message.agent))
-  const tableOptions = {
+  const tableOptions = createMemo(() => ({
     style: "grid" as const,
     borderStyle: "rounded" as const,
     borderColor: theme.border,
     outerBorder: true,
     wrapMode: "word" as const,
-  }
+  }))
   // While the part is still streaming, keep a single <markdown streaming> so it
   // updates in place instead of being torn down and rebuilt every token. Only
   // once the text is finalized do we split real fenced code blocks into panels;
@@ -1688,7 +1688,7 @@ function TextPart(props: { last: boolean; part: TextPart; message: AssistantMess
                 streaming={true}
                 internalBlockMode="top-level"
                 content={props.part.text.trim()}
-                tableOptions={tableOptions}
+                tableOptions={tableOptions()}
                 conceal={ctx.conceal()}
                 fg={theme.markdownText}
                 bg={theme.background}
@@ -1706,7 +1706,7 @@ function TextPart(props: { last: boolean; part: TextPart; message: AssistantMess
                       streaming={false}
                       internalBlockMode="top-level"
                       content={ctx.conceal() ? polishMarkdown(seg.text) : seg.text}
-                      tableOptions={tableOptions}
+                      tableOptions={tableOptions()}
                       conceal={ctx.conceal()}
                       fg={theme.markdownText}
                       bg={theme.background}