docs(uiux): UIUX 设计方案大改 + 5 份作业指导书对齐 + 开发任务文档

- UIUX 文档：填充 19 个缺口（多主体画像/健康度/AI+看板/增长域/洞察域/创始人端/OODA/助推/商密）
- UIUX 文档：插入 6 个新章节（十四~十九），旧章节重编号为二十~三十一，更新目录和交叉引用
- 作业指导书 x5：导航改为 6 域分组，新增 Context Bar/工作模式/Insight Rail/决策线程/多工作区等 UI 概念
- 新建 docs/2-task-uiux.md：50 个代码落地开发任务，按 P0-P6 分优先级 + 8 Sprint 规划
- 后端/前端：大量新增模型、路由、组件（来自之前 Phase 开发）

backend/app/routers/reports.py

@@ -3,7 +3,7 @@
 import json
 from datetime import datetime, timezone
 
-from fastapi import APIRouter, Depends, HTTPException, Query, status
+from fastapi import APIRouter, Depends, HTTPException, Query, UploadFile, File, status
 from fastapi.responses import StreamingResponse
 from sqlalchemy import func, select
 from sqlalchemy.ext.asyncio import AsyncSession
@@ -24,7 +24,9 @@ from app.schemas.report import (
 )
 from app.services.ai_parser import parse_report
 from app.services.health_calculator import calculate_health_score, determine_trend
+from app.services.report_tracker import compute_timeliness
 from app.services.risk_engine import detect_risks
+from app.services.file_parser import parse_file
 
 router = APIRouter(prefix="/reports", tags=["reports"])
 
@@ -369,3 +371,45 @@ async def parse_report_stream(
             "X-Accel-Buffering": "no",
         },
     )
+
+
+@router.get("/timeliness", response_model=ApiResponse[list])
+async def get_timeliness(
+    company_id: str | None = Query(default=None),
+    db: AsyncSession = Depends(get_db),
+    user: User = Depends(get_current_user),
+):
+    """获取月报提交及时性和数据质量评分。"""
+    items = await compute_timeliness(db, user.tenant_id, company_id)
+    return success(data=items)
+
+
+@router.post("/upload", response_model=ApiResponse[dict])
+async def upload_report_file(
+    file: UploadFile = File(...),
+    user: User = Depends(get_current_user),
+):
+    """上传月报文件 — 自动解析提取文本内容。
+
+    支持 .xlsx、.pdf、.txt、.md、.csv 格式。
+    """
+    if not file.filename:
+        raise HTTPException(status_code=400, detail="文件名不能为空")
+
+    allowed_extensions = {".xlsx", ".xls", ".pdf", ".txt", ".md", ".csv"}
+    ext = file.filename.rsplit(".", 1)[-1].lower() if "." in file.filename else ""
+    if f".{ext}" not in allowed_extensions:
+        raise HTTPException(status_code=400, detail=f"不支持的文件格式: .{ext}")
+
+    content = await file.read()
+    if len(content) > 10 * 1024 * 1024:
+        raise HTTPException(status_code=400, detail="文件大小不能超过 10MB")
+
+    extracted_text = await parse_file(content, file.filename)
+
+    return success(data={
+        "filename": file.filename,
+        "file_type": ext,
+        "extracted_text": extracted_text[:10000],
+        "char_count": len(extracted_text),
+    })