[变更性质] feat(frontend)

[新增功能] 12 页面组件全量 shadcn：Card/Button/Table/Tabs/Select/Alert；375 底部 Tab Bar 改用 Tabs 组件实现
[实现方案] 页面级手写 class 全部移除（.btn/.banner/table.data/.badge/.tabs/.metric-row/.m-tile/.hint 等改为 shadcn + tailwind 工具类）；Modal/DatasetWizard/DatasetCard/DiffView/CodeEditor/Status/Layout 同步
[影响范围] src/pages/*.svelte、src/components/*.svelte

1 files changed, 91 insertions, 91 deletions

diff --git a/frontend/src/pages/ProjectStrategyTab.svelte b/frontend/src/pages/ProjectStrategyTab.svelte
index 8614cc0..e4269e3 100644
--- a/frontend/src/pages/ProjectStrategyTab.svelte
+++ b/frontend/src/pages/ProjectStrategyTab.svelte
@@ -9,6 +9,7 @@
   import { Alert } from '$lib/components/ui/alert';
   import { Badge } from '$lib/components/ui/badge';
   import * as Card from '$lib/components/ui/card';
+  import * as Table from '$lib/components/ui/table';
   import { projectsStore } from '../lib/listsStore.svelte';
   import {
     getProject,
@@ -185,7 +186,7 @@
     try {
       const [a, b] = await Promise.all([getVersionCode(projectId, v.id), getVersionCode(projectId, prev.id)]);
       comparing = {
-        label: `${a.code ? '' : ''}${v.hash.slice(0, 8)}（新）对比 ${prev.hash.slice(0, 8)}（旧）`,
+        label: `${v.hash.slice(0, 8)}（新）对比 ${prev.hash.slice(0, 8)}（旧）`,
         before: b.code,
         after: a.code
       };
@@ -261,29 +262,29 @@
   }
 </script>
 
-<div class="stack">
+<div class="flex flex-col gap-3">
   <Status busy={initBusy} error={initErr} busyText="加载策略草稿…" empty={null} />
 
   {#if !initBusy && !initErr}
-    <Card.Root size="sm" class="stack">
-      <div class="spread">
-        <h2>策略代码（Backtrader Python）</h2>
-        <span class="save-status" role="status">
+    <Card.Root size="sm" class="p-4 flex flex-col gap-3">
+      <div class="flex flex-wrap justify-between items-center gap-2">
+        <h2 class="text-lg font-semibold">策略代码（Backtrader Python）</h2>
+        <span class="text-sm text-muted-foreground" role="status">
           {saveStatus === 'saved' && `已保存${saveMsg ? ` · ${saveMsg}` : ''}`}
           {#if saveStatus === 'dirty'}<Badge variant="outline">有未保存修改</Badge>{/if}
           {#if saveStatus === 'saving'}<Badge variant="secondary">保存中…</Badge>{/if}
           {#if saveStatus === 'conflict'}<Badge variant="destructive">冲突</Badge>{/if}
         </span>
       </div>
-      <p class="hint">
+      <p class="text-sm text-muted-foreground">
         编辑器修改会自动保存（约 0.8 秒停顿后提交）。草稿代 {baseGeneration} · 回测与获取 AI 建议使用当前草稿快照
       </p>
       <CodeEditor value={code} onInput={onEditorInput} readOnly={false} label="策略源码" height={430} />
-      <div class="spread wrap">
+      <div class="flex flex-wrap justify-between items-center gap-2">
         <Input
           bind:value={snapshotMessage}
           placeholder="快照说明，例如：加入RSI过滤器（可选）"
-          style="flex:2 1 240px"
+          class="flex-[2_1_240px] min-w-[200px]"
           onkeydown={(ev) => {
             if (ev.key === 'Enter') void snapshot();
           }}
@@ -302,119 +303,118 @@
       <Status busy={false} error={snapshotErr} empty={snapshotMsg} />
 
       {#if conflictServer}
-        <Alert variant="default" class="bg-[var(--warn-soft)] border-[#f0ddb4]">
+        <Alert variant="default">
           <span aria-hidden="true">⚠</span>
           <span>
             服务器上的草稿已被其他修改更新（代 {conflictServer.generation}），你正在编辑的本地内容不会自动覆盖。
           </span>
         </Alert>
         <DiffView before={conflictServer.code} after={code} beforeLabel="服务器" afterLabel="本机" />
-        <div class="row">
+        <div class="flex items-center gap-2 flex-wrap">
           <Button onclick={keepMine}>保留本机修改（覆盖服务器）</Button>
           <Button variant="outline" onclick={loadServer}>采用服务器版本</Button>
         </div>
       {/if}
     </Card.Root>
 
-    <div class="stack">
-      <h2>AI 助手</h2>
-      <Card.Root size="sm" class="stack">
-        <label for="ai-instruction">希望 AI 帮你做什么？<span class="hint">例如：把均线周期改为两个可调参数并解释影响</span></label>
-        <textarea id="ai-instruction" rows="3" bind:value={instruction} placeholder="描述对策略的修改意图，AI 返回完整新源码与差异预览"></textarea>
-        <div class="row">
-          <Button disabled={aiBusy || !instruction.trim()} onclick={askAI}>
-            {aiBusy ? 'AI 处理中…' : '获取建议'}
-          </Button>
-        </div>
-        {#if aiErr}
-          <Alert variant="destructive" class="bg-[var(--danger-soft)] border-[#f2c7c7]">
-            <span aria-hidden="true">⚠</span>
-            <span>{aiErr}</span>
-          </Alert>
-        {/if}
+    <Card.Root size="sm" class="p-4 flex flex-col gap-3">
+      <h2 class="text-lg font-semibold">AI 助手</h2>
+      <Label for="ai-instruction">希望 AI 帮你做什么？<span class="text-sm text-muted-foreground">例如：把均线周期改为两个可调参数并解释影响</span></Label>
+      <textarea id="ai-instruction" class="flex w-full rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-xs outline-none focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/50" rows="3" bind:value={instruction} placeholder="描述对策略的修改意图，AI 返回完整新源码与差异预览"></textarea>
+      <div class="flex items-center gap-2 flex-wrap">
+        <Button class="w-fit" disabled={aiBusy || !instruction.trim()} onclick={askAI}>
+          {aiBusy ? 'AI 处理中…' : '获取建议'}
+        </Button>
+      </div>
+      {#if aiErr}
+        <Alert variant="destructive">
+          <span aria-hidden="true">⚠</span>
+          <span>{aiErr}</span>
+        </Alert>
+      {/if}
 
-        {#if aiResult}
-          <div class="stack">
-            <div class="spread">
-              <h3>建议解释 <span class="hint">{aiResult.model}</span></h3>
-              <span class="hint">
-                tokens {aiResult.usage?.input_tokens ?? '—'} 入 / {aiResult.usage?.output_tokens ?? '—'} 出
-              </span>
-            </div>
-            <p>{aiResult.explanation}</p>
-            <h3>完整建议源码</h3>
-            <CodeEditor value={aiResult.proposed_code} onInput={() => {}} readOnly={true} label="AI 返回代码（只读）" height={280} />
-            <h3>与当前草稿的差异</h3>
-            <DiffView before={code} after={aiResult.proposed_code} beforeLabel="当前草稿" afterLabel="AI 建议" />
-            <div class="row">
-              <Button
-                disabled={aiAcceptBusy}
-                onclick={acceptAI}
-                title={aiResult.base_generation !== baseGeneration ? '草稿代已变化，建议如需采用请重新获取' : ''}
-              >
-                {aiAcceptBusy ? '接受中…' : '接受为新版本'}
-              </Button>
-              <Button variant="ghost" disabled={aiAcceptBusy} onclick={discardAI}>放弃建议</Button>
-              {#if aiResult.base_generation !== baseGeneration}
-                <span class="text-[var(--warn)]">草稿代 {aiResult.base_generation} 与当前 {baseGeneration} 不一致，接受会失败；请重新发起说明</span>
-              {/if}
-              {#if aiAcceptErr}
-                <Alert variant="destructive" class="bg-[var(--danger-soft)] border-[#f2c7c7]">{aiAcceptErr}</Alert>
-              {/if}
-            </div>
+      {#if aiResult}
+        <div class="flex flex-col gap-2">
+          <div class="flex flex-wrap justify-between items-center gap-2">
+            <h3 class="text-base font-semibold">建议解释 <span class="text-sm text-muted-foreground">{aiResult.model}</span></h3>
+            <span class="text-sm text-muted-foreground">
+              tokens {aiResult.usage?.input_tokens ?? '—'} 入 / {aiResult.usage?.output_tokens ?? '—'} 出
+            </span>
           </div>
-        {/if}
-        {#if aiNote}
-          <Alert variant="default" class="bg-[var(--brand-soft)] border-[#bfe9db]">{aiNote}</Alert>
-        {/if}
-      </Card.Root>
-    </div>
+          <p class="m-0">{aiResult.explanation}</p>
+          <h3 class="text-base font-semibold">完整建议源码</h3>
+          <CodeEditor value={aiResult.proposed_code} onInput={() => {}} readOnly={true} label="AI 返回代码（只读）" height={280} />
+          <h3 class="text-base font-semibold">与当前草稿的差异</h3>
+          <DiffView before={code} after={aiResult.proposed_code} beforeLabel="当前草稿" afterLabel="AI 建议" />
+          <div class="flex items-center gap-2 flex-wrap">
+            <Button
+              class="w-fit"
+              disabled={aiAcceptBusy}
+              onclick={acceptAI}
+              title={aiResult.base_generation !== baseGeneration ? '草稿代已变化，建议如需采用请重新获取' : ''}
+            >
+              {aiAcceptBusy ? '接受中…' : '接受为新版本'}
+            </Button>
+            <Button variant="ghost" class="w-fit" disabled={aiAcceptBusy} onclick={discardAI}>放弃建议</Button>
+            {#if aiResult.base_generation !== baseGeneration}
+              <span class="text-destructive">草稿代 {aiResult.base_generation} 与当前 {baseGeneration} 不一致，接受会失败；请重新发起说明</span>
+            {/if}
+            {#if aiAcceptErr}
+              <Alert variant="destructive">{aiAcceptErr}</Alert>
+            {/if}
+          </div>
+        </div>
+      {/if}
+      {#if aiNote}
+        <Alert variant="default">{aiNote}</Alert>
+      {/if}
+    </Card.Root>
 
-    <div class="stack">
-      <h2>版本历史</h2>
+    <Card.Root size="sm" class="p-4 flex flex-col gap-3">
+      <h2 class="text-lg font-semibold">版本历史</h2>
       <Status busy={versionsBusy} error={versionsErr} busyText="载入版本…" empty={null} />
       {#if !versionsBusy && versions.length === 0}
         <Status busy={false} empty="还没有版本快照" emptyHint="保存第一个快照后可以在历史中查看完整代码与恢复" />
       {/if}
       {#if !versionsBusy && versions.length > 0}
-        <div class="px-3 py-2 rounded-[var(--radius-lg)] border border-border bg-card">
-          <table class="data">
-            <thead>
-              <tr>
-                <th>时间</th>
-                <th>摘要</th>
-                <th>哈希</th>
-                <th>来源</th>
-                <th>操作</th>
-              </tr>
-            </thead>
-            <tbody>
+        <div class="overflow-x-auto rounded-lg border border-border">
+          <Table.Root>
+            <Table.Header>
+              <Table.Row>
+                <Table.Head>时间</Table.Head>
+                <Table.Head>摘要</Table.Head>
+                <Table.Head>哈希</Table.Head>
+                <Table.Head>来源</Table.Head>
+                <Table.Head>操作</Table.Head>
+              </Table.Row>
+            </Table.Header>
+            <Table.Body>
               {#each versions as v, i (v.id)}
-                <tr>
-                  <td>{fmtDateTime(v.created_at)}</td>
-                  <td>
+                <Table.Row>
+                  <Table.Cell>{fmtDateTime(v.created_at)}</Table.Cell>
+                  <Table.Cell>
                     {v.message?.trim() || '（无说明）'}
-                    <span class="hint">版本代 {v.hash?.slice(0, 8) || '—'}</span>
-                  </td>
-                  <td class="num">{v.hash?.slice(0, 12)}</td>
-                  <td><Badge variant="outline">{versionSourceLabel[v.source]}</Badge></td>
-                  <td>
-                    <div class="row">
+                    <span class="text-sm text-muted-foreground ml-1">版本代 {v.hash?.slice(0, 8) || '—'}</span>
+                  </Table.Cell>
+                  <Table.Cell class="tabular-nums">{v.hash?.slice(0, 12)}</Table.Cell>
+                  <Table.Cell><Badge variant="outline">{versionSourceLabel[v.source]}</Badge></Table.Cell>
+                  <Table.Cell>
+                    <div class="flex items-center gap-1 flex-wrap">
                       <Button variant="outline" size="sm" onclick={() => void compareWithDraft(v)}>对比当前</Button>
                       {#if i + 1 < versions.length}
                         <Button variant="outline" size="sm" onclick={() => void compareTwoVersions(i)}>与相邻旧版对比</Button>
                       {/if}
                       <Button size="sm" onclick={() => void restore(v)}>恢复为新草稿</Button>
                     </div>
-                  </td>
-                </tr>
+                  </Table.Cell>
+                </Table.Row>
               {/each}
-            </tbody>
-          </table>
+            </Table.Body>
+          </Table.Root>
         </div>
       {/if}
-      <p class="hint">版本为不可变记录，恢复均创建新草稿，从不改写历史。获取到最新草稿修改内容请刷新页面查看。</p>
-    </div>
+      <p class="text-sm text-muted-foreground">版本为不可变记录，恢复均创建新草稿，从不改写历史。获取到最新草稿修改内容请刷新页面查看。</p>
+    </Card.Root>
 
     {#if comparing}
       <Modal title={comparing.label} onClose={() => (comparing = null)}>