fix: evaluation report P0/P1/P2 fixes, remove Docker, add upload UI

Backend:
- Add NotFoundException + BusinessException, return correct HTTP status (404/400)
- Add @Index on reports.project_id and reports.upload_time
- Add fileSize column to reports, populate on upload, return in DTO
- Cascade delete: deleting project now removes all reports (DB + files + PDFs)
- Delete report: also clean up pre-rendered PDF
- File upload MIME validation (extension + Content-Type)
- Remove duplicate @ExceptionHandler from ReportController
- Switch from System.err to SLF4J logger
- Handle MethodArgumentNotValid, MissingServletRequestPart, etc.

Frontend:
- Remove all Docker files (project uses 宝塔 panel deployment)
- Upgrade axios 1.6.8 -> 1.7.7 (CVE-2024-39338)
- Remove unused @vue-office/pptx + vue-demi (see CHANGELOG for rationale)
- Fix vite proxy port 37821 -> 30081
- Remove mock data fallback in production
- Add upload report UI (button + modal in ProjectDetail)
- Add create project UI (button + modal in ProjectList)
- Add filename search box in ProjectDetail
- New useApi methods: createProject, uploadReport, deleteProject, deleteReport
- FilePreview/ReportCard: show fileSize (was undefined before)

Docs:
- Add README.md (overview, quick start, structure)
- Add CHANGELOG.md (full change log + pptx removal rationale)
- Include EVALUATION_REPORT.md and blog-vibe-coding.md

Tests:
- All 73 backend tests pass
- All 43 frontend tests pass
- Updated test fixtures for new API contract

README.md

@@ -0,0 +1,74 @@
+# Publish — AI 日报分发平台
+
+私有化部署的日报/周报管理与分发平台。后端 Spring Boot + SQLite，前端 Vue 3 + Vite。
+
+## 快速开始
+
+### 开发
+
+```bash
+# 后端（需要 Java 21）
+./mvnw.cmd spring-boot:run
+
+# 前端
+pnpm install
+pnpm dev  # → http://localhost:41733
+```
+
+### 部署
+
+本项目使用**宝塔面板**部署（不是 Docker）。
+
+```bash
+powershell -File deploy/package.ps1
+# 生成 deploy/publish_deploy.zip
+# 上传到服务器 /usr/local/publish_dishboard/ 解压覆盖
+```
+
+完整部署步骤见 [deploy/README.md](deploy/README.md)
+
+## 文档
+
+- [API.md](API.md) — 完整 API 文档
+- [CHANGELOG.md](CHANGELOG.md) — 更新日志
+- [deploy/README.md](deploy/README.md) — 部署说明
+
+## 项目结构
+
+```
+publish/
+├── src/main/java/com/reportdist/   # Spring Boot 后端
+│   ├── controller/                 # REST API
+│   ├── service/                    # 业务逻辑
+│   ├── repository/                 # JPA 仓储
+│   ├── entity/                     # 数据库实体
+│   ├── dto/                        # 数据传输对象
+│   └── exception/                  # 异常处理
+├── src/                            # Vue 3 前端
+│   ├── pages/                      # 页面
+│   ├── components/                 # 组件
+│   ├── composables/                # 组合式 API
+│   └── router/                     # 路由
+├── deploy/                         # 部署脚本与说明
+├── pom.xml                         # Maven 配置
+└── package.json                    # 前端依赖
+```
+
+## 技术栈
+
+- **后端**：Spring Boot 3.2.5 + Spring Data JPA + SQLite + Apache POI + PDFBox
+- **前端**：Vue 3.4 + Vite 5 + TailwindCSS 4 + Axios
+- **构建**：Maven + pnpm
+- **部署**：宝塔面板 (Java 21 + Node.js)
+
+## 端口约定
+
+| 服务 | 端口 |
+|------|------|
+| 后端 (Spring Boot) | 30081 |
+| 前端 (Node.js static server) | 30080 |
+| 开发模式 - Vite | 41733 |
+
+## 许可证
+
+私有项目