feat: v2 Vue3 frontend + multiple optimizations

- New Vue 3 + Vite frontend at /v2/ (OLED dark theme, Fira Sans/Code)
- Date selector: support day/week/month range (backend unchanged)
- SSE auto-reconnect (up to 3 retries)
- Visibility polling pause (dashboard pauses when tab hidden)
- Friendly Chinese HTTP error messages
- Cancel task with confirmation in Dashboard
- Split AiWorkflowService (1700->845 lines):
  - AiApiService: AI API calls + streaming
  - ExcelExportService: POI Excel generation
- Dockerfile: 3-stage build (Node frontend -> Maven -> JRE)
- WebApplication.java: System.out -> Logger
- .gitignore: v2 build output, backup dirs

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/test/java/com/svnlog/web/service/AiWorkflowServiceTest.java

@@ -17,19 +17,27 @@ class AiWorkflowServiceTest {
     @TempDir
     Path tempDir;
 
+    private AiApiService buildAiApiService(SettingsService settingsService) {
+        return new AiApiService(settingsService);
+    }
+
+    private ExcelExportService buildExcelExportService() {
+        return new ExcelExportService();
+    }
+
     @Test
     void shouldResolveDeepSeekProviderByDefault() {
+        final OutputFileService outputFileService = buildOutputFileService();
+        final SettingsService settingsService = buildSettingsService(outputFileService);
+        final AiApiService aiApiService = buildAiApiService(settingsService);
         final AiWorkflowService service = new AiWorkflowService(
-                buildOutputFileService(),
-                new SettingsService(
-                        buildOutputFileService(),
-                        new SettingsPersistenceService(),
-                        new SvnPresetService()
-                ),
-                new AiInputValidator()
+                outputFileService,
+                new AiInputValidator(),
+                aiApiService,
+                buildExcelExportService()
         );
 
-        final AiWorkflowService.AiProviderContext context = service.resolveProviderContext(null);
+        final AiApiService.AiProviderContext context = aiApiService.resolveProviderContext(null);
 
         Assertions.assertEquals(SettingsService.PROVIDER_DEEPSEEK, context.getProvider());
         Assertions.assertEquals("deepseek-chat", context.getStageOneModel());
@@ -39,11 +47,7 @@ class AiWorkflowServiceTest {
     @Test
     void shouldResolveOpenAiCompatibleModelsAndUrl() {
         final OutputFileService outputFileService = buildOutputFileService();
-        final SettingsService settingsService = new SettingsService(
-                outputFileService,
-                new SettingsPersistenceService(),
-                new SvnPresetService()
-        );
+        final SettingsService settingsService = buildSettingsService(outputFileService);
         settingsService.updateSettings(
                 null,
                 SettingsService.PROVIDER_OPENAI_COMPATIBLE,
@@ -56,9 +60,12 @@ class AiWorkflowServiceTest {
                 null,
                 null
         );
-        final AiWorkflowService service = new AiWorkflowService(outputFileService, settingsService, new AiInputValidator());
+        final AiApiService aiApiService = buildAiApiService(settingsService);
+        final AiWorkflowService service = new AiWorkflowService(
+                outputFileService, new AiInputValidator(), aiApiService, buildExcelExportService()
+        );
 
-        final AiWorkflowService.AiProviderContext context = service.resolveProviderContext(null);
+        final AiApiService.AiProviderContext context = aiApiService.resolveProviderContext(null);
 
         Assertions.assertEquals(SettingsService.PROVIDER_OPENAI_COMPATIBLE, context.getProvider());
         Assertions.assertEquals("http://127.0.0.1:5001/v1/chat/completions", context.getApiUrl());
@@ -68,15 +75,14 @@ class AiWorkflowServiceTest {
 
     @Test
     void shouldFailFastWhenOpenAiCompatibleBaseUrlMissing() {
-        final AiWorkflowService service = new AiWorkflowService(
-                buildOutputFileService(),
-                new StubSettingsService(buildOutputFileService(), "   ", "sk-openai-test"),
-                new AiInputValidator()
+        final OutputFileService outputFileService = buildOutputFileService();
+        final AiApiService aiApiService = buildAiApiService(
+                new StubSettingsService(outputFileService, "   ", "sk-openai-test")
         );
 
         final IllegalStateException error = Assertions.assertThrows(
                 IllegalStateException.class,
-                () -> service.resolveProviderContext(null)
+                () -> aiApiService.resolveProviderContext(null)
         );
 
         Assertions.assertTrue(error.getMessage().contains("OpenAI兼容 Base URL"));
@@ -85,11 +91,7 @@ class AiWorkflowServiceTest {
     @Test
     void shouldParseCompatibleStreamWhenOnlyContentIsReturned() throws Exception {
         final OutputFileService outputFileService = buildOutputFileService();
-        final SettingsService settingsService = new SettingsService(
-                outputFileService,
-                new SettingsPersistenceService(),
-                new SvnPresetService()
-        );
+        final SettingsService settingsService = buildSettingsService(outputFileService);
         settingsService.updateSettings(
                 null,
                 SettingsService.PROVIDER_OPENAI_COMPATIBLE,
@@ -102,8 +104,8 @@ class AiWorkflowServiceTest {
                 null,
                 null
         );
-        final AiWorkflowService service = new AiWorkflowService(outputFileService, settingsService, new AiInputValidator());
-        final AiWorkflowService.AiProviderContext providerContext = service.resolveProviderContext(null);
+        final AiApiService aiApiService = buildAiApiService(settingsService);
+        final AiApiService.AiProviderContext providerContext = aiApiService.resolveProviderContext(null);
         final TaskContext taskContext = new TaskContext(buildTaskInfo(), null, null);
         final Buffer buffer = new Buffer()
                 .writeUtf8("data: {\"choices\":[{\"delta\":{\"content\":\"{\\\"items\\\":[\"}}]}\n")
@@ -111,7 +113,7 @@ class AiWorkflowServiceTest {
                 .writeUtf8("data: {\"choices\":[{\"delta\":{\"content\":\"]}\"},\"finish_reason\":\"stop\"}]}\n")
                 .writeUtf8("data: [DONE]\n");
 
-        final AiWorkflowService.AiStreamResult result = service.readStreamingResponse(
+        final AiApiService.AiStreamResult result = aiApiService.readStreamingResponse(
                 buffer,
                 taskContext,
                 providerContext,
@@ -138,12 +140,30 @@ class AiWorkflowServiceTest {
         return taskInfo;
     }
 
+    private SettingsService buildSettingsService(OutputFileService outputFileService) {
+        final RepositoryConfigService repositoryConfigService = buildRepositoryConfigService(outputFileService);
+        final SvnPresetService svnPresetService = new SvnPresetService(repositoryConfigService);
+        svnPresetService.init();
+        return new SettingsService(outputFileService, new SettingsPersistenceService(), svnPresetService, repositoryConfigService);
+    }
+
+    private RepositoryConfigService buildRepositoryConfigService(OutputFileService outputFileService) {
+        final RepositoryConfigService repositoryConfigService = new RepositoryConfigService(outputFileService);
+        repositoryConfigService.init();
+        return repositoryConfigService;
+    }
+
     private static final class StubSettingsService extends SettingsService {
         private final String openaiBaseUrl;
         private final String openaiApiKey;
 
         private StubSettingsService(OutputFileService outputFileService, String openaiBaseUrl, String openaiApiKey) {
-            super(outputFileService, new SettingsPersistenceService(), new SvnPresetService());
+            super(
+                    outputFileService,
+                    new SettingsPersistenceService(),
+                    new SvnPresetService(new RepositoryConfigService(outputFileService)),
+                    new RepositoryConfigService(outputFileService)
+            );
             this.openaiBaseUrl = openaiBaseUrl;
             this.openaiApiKey = openaiApiKey;
         }