优化: UI/UX遗留批(审计/AI命令层/前端组件,会话前基线收尾)

- AuditLog +298(筛选/详情/i18n)+ audit 后端 record/mod

- AI 命令层:generate_image +81 / fetch_url / fetch_search / skills / tool_registry / tools/file / provider / conversation

- 前端组件:AiChat/TopBar/ConversationSidebar/GitChanges/ApprovalPopup/Dashboard/ProjectDetail 等 30+ + composables + i18n

- 诊断文档: aichat历史会话实证诊断-2026-08-04 + project_soft_delete 测试

src/components/dashboard/ActiveProjectsPanel.vue

@@ -130,7 +130,7 @@ const displayProjects = computed(() =>
   letter-spacing: 0.3px;
   text-transform: uppercase;
 }
-.chip-coding { background: rgba(123,111,240,0.12); color: var(--df-accent); }
+.chip-coding { background: var(--df-accent-soft); color: var(--df-accent); }
 .chip-testing { background: rgba(240,199,94,0.12); color: var(--df-warning); }
 .chip-release { background: rgba(61,219,160,0.12); color: var(--df-success); }
 .chip-planning { background: rgba(94,175,240,0.12); color: var(--df-info); }