feat: update web ui, docker make commands, and related docs/config

src/main/java/com/svnlog/web/service/SettingsService.java

@@ -8,6 +8,8 @@ import org.springframework.stereotype.Service;
 
 @Service
 public class SettingsService {
+    // 启动默认 API Key（仅作为本地默认值，可在设置页覆盖）
+    private static final String BOOTSTRAP_API_KEY = "sk-48c59012c93b43a08fecbaf3e74799e7";
 
     private final OutputFileService outputFileService;
     private final SvnPresetService svnPresetService;
@@ -17,6 +19,7 @@ public class SettingsService {
     public SettingsService(OutputFileService outputFileService, SvnPresetService svnPresetService) {
         this.outputFileService = outputFileService;
         this.svnPresetService = svnPresetService;
+        this.runtimeApiKey = initStartupApiKey();
         this.defaultSvnPresetId = svnPresetService.configuredDefaultPresetId();
     }
 
@@ -58,8 +61,23 @@ public class SettingsService {
         return null;
     }
 
+    private String initStartupApiKey() {
+        final String envKey = System.getenv("DEEPSEEK_API_KEY");
+        if (envKey != null && !envKey.trim().isEmpty()) {
+            return envKey.trim();
+        }
+        if (BOOTSTRAP_API_KEY != null && !BOOTSTRAP_API_KEY.trim().isEmpty()
+                && !BOOTSTRAP_API_KEY.startsWith("REPLACE_WITH_")) {
+            return BOOTSTRAP_API_KEY.trim();
+        }
+        return null;
+    }
+
     private String detectApiKeySource(String envKey) {
         if (runtimeApiKey != null && !runtimeApiKey.trim().isEmpty()) {
+            if (envKey != null && !envKey.trim().isEmpty() && runtimeApiKey.equals(envKey.trim())) {
+                return "env";
+            }
             return "runtime";
         }
         if (envKey != null && !envKey.trim().isEmpty()) {