fix:修复客户端ai分析功能没有降级的问题

client/src/main/java/space/anyi/client/controller/MainController.java

@@ -1265,30 +1265,44 @@ public class MainController {
     private void handleGenerateAnalysis() {
         analysisResult.setText("正在生成分析报告...");
         generateBtn.setDisable(true);
+        generateBtn.setText("生成中...");
         aiService.streamAnalysis(
                 token -> Platform.runLater(() -> {
-                    if ("正在生成分析报告...".equals(analysisResult.getText())) {
+                    if ("正在生成分析报告...".equals(analysisResult.getText())
+                            || "AI 服务不可用，正在尝试本地模式...".equals(analysisResult.getText())) {
                         analysisResult.setText("");
                     }
                     analysisResult.appendText(token);
                 }),
                 () -> Platform.runLater(() -> {
                     generateBtn.setDisable(false);
-                    showInfo("分析完成");
+                    generateBtn.setText("生成分析报告");
+                    if (!analysisResult.getText().startsWith("==========")) {
+                        showInfo("AI 分析完成");
+                    }
                 }),
                 error -> Platform.runLater(() -> {
-                    generateBtn.setDisable(false);
+                    analysisResult.setText("AI 服务不可用，正在尝试本地模式...");
                     fallbackGenerateAnalysis();
                 })
         );
     }
 
     private void fallbackGenerateAnalysis() {
-        R<String> result = aiService.getAnalysis();
-        if (result.getCode() == 200 && result.getData() != null) {
-            analysisResult.setText(result.getData());
-        } else {
-            showAlert(result.getMessage());
+        try {
+            R<String> result = aiService.getAnalysis();
+            if (result.getCode() == 200 && result.getData() != null) {
+                analysisResult.setText(result.getData());
+                showInfo("使用本地模式生成分析报告");
+            } else {
+                String msg = result.getMessage() != null ? result.getMessage() : "未知错误";
+                analysisResult.setText("生成失败：" + msg + "\n\n请检查配置后点击「生成分析报告」重试。");
+            }
+        } catch (Exception e) {
+            analysisResult.setText("生成失败：" + e.getMessage() + "\n\n请检查配置后点击「生成分析报告」重试。");
+        } finally {
+            generateBtn.setDisable(false);
+            generateBtn.setText("生成分析报告");
         }
     }