fix(FinancialPanorama): 优化 loading 状态，Tabs 立即显示

- 移除 SubTabContainer 的 loading 条件渲染，Tabs 始终可见
- 各 Tab 组件内部处理 loading 状态，显示 Spinner
- 传递 loading 和 loadingTab 到 componentProps
- 修改 BalanceSheetTab、IncomeStatementTab、CashflowTab、
  FinancialMetricsTab、MetricsCategoryTab 支持 loading 属性

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/views/Company/components/FinancialPanorama/index.tsx

@@ -250,6 +250,9 @@ const FinancialPanorama: React.FC<FinancialPanoramaProps> = ({ stockCode: propSt
       incomeStatement,
       cashflow,
       financialMetrics,
+      // 加载状态
+      loading,
+      loadingTab,
       // 工具函数
       showMetricChart,
       calculateYoYChange,
@@ -265,6 +268,8 @@ const FinancialPanorama: React.FC<FinancialPanoramaProps> = ({ stockCode: propSt
       incomeStatement,
       cashflow,
       financialMetrics,
+      loading,
+      loadingTab,
       showMetricChart,
       positiveColor,
       negativeColor,
@@ -302,27 +307,25 @@ const FinancialPanorama: React.FC<FinancialPanoramaProps> = ({ stockCode: propSt
         )}
 
         {/* 三大财务报表 - 使用 SubTabContainer 二级导航 */}
-        {!loading && stockInfo && (
-          <Card bg="gray.900" shadow="md" border="1px solid" borderColor="rgba(212, 175, 55, 0.3)">
-            <CardBody p={0}>
-              <SubTabContainer
-                tabs={tabConfigs}
-                componentProps={componentProps}
-                themePreset="blackGold"
-                isLazy
-                onTabChange={handleTabChange}
-                rightElement={
-                  <PeriodSelector
-                    selectedPeriods={selectedPeriods}
-                    onPeriodsChange={setSelectedPeriods}
-                    onRefresh={handleRefresh}
-                    isLoading={loadingTab !== null}
-                  />
-                }
-              />
-            </CardBody>
-          </Card>
-        )}
+        <Card bg="gray.900" shadow="md" border="1px solid" borderColor="rgba(212, 175, 55, 0.3)">
+          <CardBody p={0}>
+            <SubTabContainer
+              tabs={tabConfigs}
+              componentProps={componentProps}
+              themePreset="blackGold"
+              isLazy
+              onTabChange={handleTabChange}
+              rightElement={
+                <PeriodSelector
+                  selectedPeriods={selectedPeriods}
+                  onPeriodsChange={setSelectedPeriods}
+                  onRefresh={handleRefresh}
+                  isLoading={loadingTab !== null || loading}
+                />
+              }
+            />
+          </CardBody>
+        </Card>
 
         {/* 错误提示 */}
         {error && (