feat: add clientSessionId filter to SessionPage (ADMIN-INFO-013)

- SessionPage already had full implementation by user
- Added clientSessionId filter input for active/interrupted session search
- Detail drawer already covers 16 fields including session diagnostics

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/pages/learning/DataPages.tsx

@@ -130,6 +130,7 @@ export function SessionPage() {
       <Space style={{ marginBottom: 16 }} wrap>
         <Input placeholder="用户ID" allowClear onChange={e => setFilters(f => ({ ...f, userId: e.target.value }))} style={{ width: 140 }} />
         <Input placeholder="资料ID" allowClear onChange={e => setFilters(f => ({ ...f, materialId: e.target.value }))} style={{ width: 140 }} />
+        <Input placeholder="Client Session ID" allowClear onChange={e => setFilters(f => ({ ...f, clientSessionId: e.target.value }))} style={{ width: 170 }} />
         <Select placeholder="状态" allowClear style={{ width: 130 }} onChange={v => setFilters(f => ({ ...f, status: v || '' }))}
           options={[{ value: 'active', label: '活跃' }, { value: 'interrupted', label: '中断' }, { value: 'completed', label: '已完成' }]} />
         <Button onClick={() => setPage(1)} type="primary">查询</Button>