新增作文区与 AI 解读开关，修复 CSV 导出。

系统设置可关闭成绩复盘 AI；学生详情增加作文区（OCR/手动题目、方案与范文、历史与 MD 下载）；导出改用 UTF-8 文件名响应。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/main.py

@@ -8,7 +8,7 @@ from fastapi.staticfiles import StaticFiles
 
 from app.core.config import settings
 from app.core.database import Base, SessionLocal, engine
-from app.routers import admin, auth, exams, export, settings as settings_router, students, subjects, wrong_questions
+from app.routers import admin, auth, compositions, exams, export, settings as settings_router, students, subjects, wrong_questions
 from app.services import ocr as ocr_service
 from app.services.migrate import run_migrations
 from app.services.seed import seed_admin_and_settings, seed_subjects
@@ -57,6 +57,7 @@ app.include_router(students.router, prefix="/api")
 app.include_router(subjects.router, prefix="/api")
 app.include_router(exams.router, prefix="/api")
 app.include_router(wrong_questions.router, prefix="/api")
+app.include_router(compositions.router, prefix="/api")
 app.include_router(export.router, prefix="/api")
 
 

backend/app/models/user.py

@@ -27,6 +27,18 @@ class WrongQuestionCategory(str, enum.Enum):
     olympiad = "olympiad"
 
 
+class CompositionStatus(str, enum.Enum):
+    pending = "pending"
+    generating = "generating"
+    done = "done"
+    failed = "failed"
+
+
+class CompositionInputMode(str, enum.Enum):
+    manual = "manual"
+    ocr = "ocr"
+
+
 class AIProvider(str, enum.Enum):
     ollama = "ollama"
     openai = "openai"
@@ -73,6 +85,9 @@ class Student(Base):
     wrong_questions: Mapped[list["WrongQuestion"]] = relationship(
         back_populates="student", cascade="all, delete-orphan"
     )
+    compositions: Mapped[list["Composition"]] = relationship(
+        back_populates="student", cascade="all, delete-orphan"
+    )
 
 
 class Subject(Base):
@@ -150,11 +165,37 @@ class WrongQuestion(Base):
     subject: Mapped["Subject"] = relationship(back_populates="wrong_questions")
 
 
+class Composition(Base):
+    __tablename__ = "compositions"
+
+    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    student_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("students.id"), index=True)
+    topic: Mapped[str] = mapped_column(Text)
+    input_mode: Mapped[CompositionInputMode] = mapped_column(
+        Enum(CompositionInputMode), default=CompositionInputMode.manual
+    )
+    writing_plan: Mapped[str | None] = mapped_column(Text, nullable=True)
+    sample_essay: Mapped[str | None] = mapped_column(Text, nullable=True)
+    error_message: Mapped[str | None] = mapped_column(Text, nullable=True)
+    status: Mapped[CompositionStatus] = mapped_column(
+        Enum(CompositionStatus), default=CompositionStatus.pending
+    )
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
+    )
+
+    student: Mapped["Student"] = relationship(back_populates="compositions")
+
+
 class SystemSettings(Base):
     __tablename__ = "system_settings"
 
     id: Mapped[int] = mapped_column(Integer, primary_key=True, default=1)
     registration_enabled: Mapped[bool] = mapped_column(default=True)
+    ai_review_enabled: Mapped[bool] = mapped_column(default=True)
     ai_provider: Mapped[str] = mapped_column(String(16), default="ollama")
     ollama_base_url: Mapped[str | None] = mapped_column(String(256), nullable=True)
     ollama_model: Mapped[str | None] = mapped_column(String(128), nullable=True)

backend/app/routers/admin.py

@@ -26,6 +26,7 @@ router = APIRouter(prefix="/admin", tags=["admin"])
 def settings_to_out(row: SystemSettings) -> SystemSettingsOut:
     return SystemSettingsOut(
         registration_enabled=row.registration_enabled,
+        ai_review_enabled=getattr(row, "ai_review_enabled", True),
         ai_provider=AIProviderEnum(row.ai_provider or "ollama"),
         ollama_base_url=row.ollama_base_url,
         ollama_model=row.ollama_model,
@@ -64,6 +65,8 @@ def update_settings(
     row = get_or_create_settings(db)
     if data.registration_enabled is not None:
         row.registration_enabled = data.registration_enabled
+    if data.ai_review_enabled is not None:
+        row.ai_review_enabled = data.ai_review_enabled
     if data.ai_provider is not None:
         row.ai_provider = data.ai_provider.value
     if data.ollama_base_url is not None:

backend/app/routers/compositions.py

@@ -0,0 +1,261 @@
+import re
+import uuid
+from concurrent.futures import ThreadPoolExecutor, TimeoutError as FuturesTimeout
+from datetime import datetime, timezone
+from pathlib import Path
+
+from fastapi import APIRouter, BackgroundTasks, Depends, File, HTTPException, UploadFile, status
+from fastapi.responses import Response
+from sqlalchemy.orm import Session, joinedload
+
+from app.core.config import settings
+from app.core.database import SessionLocal, get_db
+from app.core.deps import get_current_user
+from app.models.user import Composition, CompositionInputMode, CompositionStatus, SystemSettings, User
+from app.schemas import CompositionCreate, CompositionInputModeEnum, CompositionOcrOut, CompositionOut
+from app.services import llm as llm_service
+from app.services import ocr as ocr_service
+from app.services.student_access import get_student_for_user
+
+router = APIRouter(tags=["compositions"])
+
+
+def _ocr_service_url(db: Session) -> str | None:
+    row = db.get(SystemSettings, 1)
+    if row and row.ocr_service_url:
+        return row.ocr_service_url.strip() or None
+    return ocr_service.resolve_ocr_service_url()
+
+
+def _to_out(item: Composition) -> CompositionOut:
+    return CompositionOut(
+        id=item.id,
+        student_id=item.student_id,
+        topic=item.topic,
+        input_mode=CompositionInputModeEnum(item.input_mode.value),
+        writing_plan=item.writing_plan,
+        sample_essay=item.sample_essay,
+        error_message=item.error_message,
+        status=item.status,
+        created_at=item.created_at,
+        updated_at=item.updated_at,
+    )
+
+
+def _safe_filename(name: str) -> str:
+    cleaned = re.sub(r'[\\/:*?"<>|]', "_", name).strip() or "composition"
+    return cleaned[:40]
+
+
+async def _generate_composition(composition_id: uuid.UUID):
+    db = SessionLocal()
+    try:
+        item = (
+            db.query(Composition)
+            .options(joinedload(Composition.student))
+            .filter(Composition.id == composition_id)
+            .first()
+        )
+        if item is None:
+            return
+        student = item.student
+        item.status = CompositionStatus.generating
+        item.error_message = None
+        db.commit()
+
+        ai_cfg = llm_service.load_ai_config(db)
+        try:
+            plan, essay = await llm_service.generate_composition(
+                ai_cfg,
+                item.topic,
+                student.school_level if student else None,
+                student.grade if student else None,
+            )
+            item.writing_plan = plan or None
+            item.sample_essay = essay or None
+            if not item.writing_plan and not item.sample_essay:
+                raise ValueError("AI 未返回有效内容")
+            item.status = CompositionStatus.done
+            item.error_message = None
+        except Exception as exc:
+            item.status = CompositionStatus.failed
+            item.error_message = str(exc)[:500]
+        item.updated_at = datetime.now(timezone.utc)
+        db.commit()
+    finally:
+        db.close()
+
+
+@router.get("/students/{student_id}/compositions", response_model=list[CompositionOut])
+def list_compositions(
+    student_id: uuid.UUID,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    get_student_for_user(db, student_id, current_user.id)
+    items = (
+        db.query(Composition)
+        .filter(Composition.student_id == student_id)
+        .order_by(Composition.created_at.desc())
+        .all()
+    )
+    return [_to_out(item) for item in items]
+
+
+@router.post(
+    "/students/{student_id}/compositions",
+    response_model=CompositionOut,
+    status_code=status.HTTP_201_CREATED,
+)
+async def create_composition(
+    student_id: uuid.UUID,
+    data: CompositionCreate,
+    background_tasks: BackgroundTasks,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    get_student_for_user(db, student_id, current_user.id)
+    item = Composition(
+        student_id=student_id,
+        topic=data.topic.strip(),
+        input_mode=CompositionInputMode(data.input_mode.value),
+        status=CompositionStatus.pending,
+    )
+    db.add(item)
+    db.commit()
+    db.refresh(item)
+    background_tasks.add_task(_generate_composition, item.id)
+    return _to_out(item)
+
+
+@router.post("/students/{student_id}/compositions/ocr", response_model=CompositionOcrOut)
+async def ocr_composition_topic(
+    student_id: uuid.UUID,
+    file: UploadFile = File(...),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    get_student_for_user(db, student_id, current_user.id)
+    content = await file.read()
+    if len(content) > settings.MAX_UPLOAD_SIZE:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="文件超过10MB限制")
+
+    tmp_dir = Path(settings.UPLOAD_DIR) / "ocr-tmp"
+    tmp_dir.mkdir(parents=True, exist_ok=True)
+    tmp_path = tmp_dir / f"{uuid.uuid4()}.jpg"
+    tmp_path.write_bytes(content)
+    ocr_url = _ocr_service_url(db)
+    try:
+        with ThreadPoolExecutor(max_workers=1) as pool:
+            future = pool.submit(ocr_service.run_ocr_with_regions, str(tmp_path), ocr_url)
+            result = future.result(timeout=settings.OCR_TIMEOUT_SECONDS)
+        text = (result.get("text") or "").strip()
+        if not text:
+            raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="OCR 未识别到文字")
+        return CompositionOcrOut(text=text)
+    except FuturesTimeout:
+        raise HTTPException(
+            status_code=status.HTTP_504_GATEWAY_TIMEOUT,
+            detail=f"OCR 识别超时（>{settings.OCR_TIMEOUT_SECONDS}秒）",
+        ) from None
+    except HTTPException:
+        raise
+    except Exception as exc:
+        raise HTTPException(
+            status_code=status.HTTP_502_BAD_GATEWAY,
+            detail=f"OCR 识别失败：{exc}",
+        ) from exc
+    finally:
+        tmp_path.unlink(missing_ok=True)
+
+
+@router.get("/compositions/{composition_id}", response_model=CompositionOut)
+def get_composition(
+    composition_id: uuid.UUID,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    item = (
+        db.query(Composition)
+        .join(Composition.student)
+        .filter(Composition.id == composition_id)
+        .first()
+    )
+    if item is None or item.student.user_id != current_user.id:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="作文记录不存在")
+    return _to_out(item)
+
+
+@router.post("/compositions/{composition_id}/regenerate", response_model=CompositionOut)
+async def regenerate_composition(
+    composition_id: uuid.UUID,
+    background_tasks: BackgroundTasks,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    item = (
+        db.query(Composition)
+        .join(Composition.student)
+        .filter(Composition.id == composition_id)
+        .first()
+    )
+    if item is None or item.student.user_id != current_user.id:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="作文记录不存在")
+
+    item.status = CompositionStatus.pending
+    item.error_message = None
+    item.writing_plan = None
+    item.sample_essay = None
+    db.commit()
+    background_tasks.add_task(_generate_composition, item.id)
+    db.refresh(item)
+    return _to_out(item)
+
+
+@router.get("/compositions/{composition_id}/download")
+def download_composition(
+    composition_id: uuid.UUID,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    item = (
+        db.query(Composition)
+        .join(Composition.student)
+        .filter(Composition.id == composition_id)
+        .first()
+    )
+    if item is None or item.student.user_id != current_user.id:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="作文记录不存在")
+    if item.status != CompositionStatus.done:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="作文尚未生成完成")
+
+    body = llm_service.composition_markdown(item.topic, item.writing_plan, item.sample_essay)
+    filename = f"{_safe_filename(item.topic)}.md"
+    from urllib.parse import quote
+
+    encoded = quote(filename)
+    return Response(
+        content=body.encode("utf-8"),
+        media_type="text/markdown; charset=utf-8",
+        headers={
+            "Content-Disposition": f'attachment; filename="composition.md"; filename*=UTF-8\'\'{encoded}'
+        },
+    )
+
+
+@router.delete("/compositions/{composition_id}", status_code=status.HTTP_204_NO_CONTENT)
+def delete_composition(
+    composition_id: uuid.UUID,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    item = (
+        db.query(Composition)
+        .join(Composition.student)
+        .filter(Composition.id == composition_id)
+        .first()
+    )
+    if item is None or item.student.user_id != current_user.id:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="作文记录不存在")
+    db.delete(item)
+    db.commit()

backend/app/routers/exams.py

@@ -6,7 +6,7 @@ from sqlalchemy.orm import Session, joinedload
 
 from app.core.database import get_db
 from app.core.deps import get_current_user
-from app.models.user import ExamRecord, SubjectScore, User
+from app.models.user import ExamRecord, SubjectScore, SystemSettings, User
 from app.schemas import (
     ExamCreate,
     ExamOut,
@@ -322,6 +322,10 @@ async def review_insight(
     current_user: User = Depends(get_current_user),
 ):
     student = get_student_for_user(db, student_id, current_user.id)
+    settings_row = db.get(SystemSettings, 1)
+    if settings_row is not None and not getattr(settings_row, "ai_review_enabled", True):
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="AI 复盘解读已在系统设置中关闭")
+
     exams = (
         db.query(ExamRecord)
         .options(joinedload(ExamRecord.scores).joinedload(SubjectScore.subject))

backend/app/routers/export.py

@@ -1,9 +1,10 @@
 import csv
 import io
 import uuid
+from urllib.parse import quote
 
 from fastapi import APIRouter, Depends
-from fastapi.responses import StreamingResponse
+from fastapi.responses import Response
 from sqlalchemy.orm import Session, joinedload
 
 from app.core.database import get_db
@@ -34,10 +35,11 @@ def export_scores_csv(
     writer.writerow(["考试日期", "考试类型", "标题", "科目", "总分", "得分", "占比"])
     type_map = {"weekly": "周考", "monthly": "月考", "final": "期末"}
     for exam in exams:
+        exam_type = exam.exam_type.value if hasattr(exam.exam_type, "value") else str(exam.exam_type)
         for score in exam.scores:
             writer.writerow([
                 exam.exam_date.isoformat(),
-                type_map.get(exam.exam_type.value, exam.exam_type.value),
+                type_map.get(exam_type, exam_type),
                 exam.title or "",
                 score.subject.name if score.subject else "",
                 float(score.total_score),
@@ -45,10 +47,13 @@ def export_scores_csv(
                 f"{float(score.ratio) * 100:.2f}%",
             ])
 
-    output.seek(0)
+    content = output.getvalue().encode("utf-8-sig")
     filename = f"{student.name}_scores.csv"
-    return StreamingResponse(
-        iter([output.getvalue().encode("utf-8-sig")]),
-        media_type="text/csv",
-        headers={"Content-Disposition": f'attachment; filename="{filename}"'},
+    encoded = quote(filename)
+    return Response(
+        content=content,
+        media_type="text/csv; charset=utf-8",
+        headers={
+            "Content-Disposition": f'attachment; filename="scores.csv"; filename*=UTF-8\'\'{encoded}'
+        },
     )

backend/app/routers/settings.py

@@ -2,8 +2,9 @@ from fastapi import APIRouter, Depends
 from sqlalchemy.orm import Session
 
 from app.core.database import get_db
-from app.models.user import SystemSettings
-from app.schemas import PublicSettingsOut
+from app.core.deps import get_current_user
+from app.models.user import SystemSettings, User
+from app.schemas import AppFeaturesOut, PublicSettingsOut
 
 router = APIRouter(prefix="/settings", tags=["settings"])
 
@@ -22,3 +23,12 @@ def get_or_create_settings(db: Session) -> SystemSettings:
 def public_settings(db: Session = Depends(get_db)):
     row = get_or_create_settings(db)
     return PublicSettingsOut(registration_enabled=row.registration_enabled)
+
+
+@router.get("/app-features", response_model=AppFeaturesOut)
+def app_features(
+    db: Session = Depends(get_db),
+    _: User = Depends(get_current_user),
+):
+    row = get_or_create_settings(db)
+    return AppFeaturesOut(ai_review_enabled=getattr(row, "ai_review_enabled", True))

backend/app/schemas/__init__.py

@@ -76,8 +76,13 @@ class PublicSettingsOut(BaseModel):
     registration_enabled: bool
 
 
+class AppFeaturesOut(BaseModel):
+    ai_review_enabled: bool
+
+
 class SystemSettingsOut(BaseModel):
     registration_enabled: bool
+    ai_review_enabled: bool = True
     ai_provider: AIProviderEnum
     ollama_base_url: str | None = None
     ollama_model: str | None = None
@@ -92,6 +97,7 @@ class SystemSettingsOut(BaseModel):
 
 class SystemSettingsUpdate(BaseModel):
     registration_enabled: bool | None = None
+    ai_review_enabled: bool | None = None
     ai_provider: AIProviderEnum | None = None
     ollama_base_url: str | None = None
     ollama_model: str | None = None
@@ -293,3 +299,39 @@ class WrongQuestionUpdate(BaseModel):
     solution_approach: str | None = None
     solution_text: str | None = None
     subject_id: int | None = None
+
+
+class CompositionStatusEnum(str, Enum):
+    pending = "pending"
+    generating = "generating"
+    done = "done"
+    failed = "failed"
+
+
+class CompositionInputModeEnum(str, Enum):
+    manual = "manual"
+    ocr = "ocr"
+
+
+class CompositionCreate(BaseModel):
+    topic: str = Field(..., min_length=1, max_length=4000)
+    input_mode: CompositionInputModeEnum = CompositionInputModeEnum.manual
+
+
+class CompositionOcrOut(BaseModel):
+    text: str
+
+
+class CompositionOut(BaseModel):
+    id: UUID
+    student_id: UUID
+    topic: str
+    input_mode: CompositionInputModeEnum
+    writing_plan: str | None = None
+    sample_essay: str | None = None
+    error_message: str | None = None
+    status: CompositionStatusEnum
+    created_at: datetime
+    updated_at: datetime
+
+    model_config = {"from_attributes": True}

backend/app/services/llm.py

@@ -306,4 +306,81 @@ async def generate_review_insight(
         careless_hint=careless_hint,
         subject_hints=subject_hints,
     )
-    return await generate_text(prompt, cfg, temperature=0.2)
+    return await generate_text(prompt, cfg, temperature=0.2)
+
+
+CURRICULUM_CHINESE_JUNIOR = """初中作文：记叙文、写人记事、简单议论文为主，通常 600-800 字。
+语言平实，素材来自课内与日常生活，禁止成人化腔调与超纲典故堆砌。"""
+
+CURRICULUM_CHINESE_SENIOR = """高中作文：记叙、议论、材料作文为主，通常 800-1000 字。
+可适度展开论证，仍须符合课内要求，禁止大学论文式写法与超纲理论。"""
+
+COMPOSITION_PROMPT = """你是一位{stage}语文老师，正在辅导{grade_text}学生完成作文。
+
+【学段年级 — 严禁超纲】
+{curriculum}
+
+作文题目：
+{topic}
+
+请严格按以下 Markdown 结构输出（不要增加其他一级标题）：
+
+## 写作方案
+（审题、立意、结构提纲、段落安排、可用素材方向，分条列出，贴合{grade_text}水平）
+
+## 范文
+（完整作文一篇，字数与语言风格必须符合{grade_text}课内要求，禁止超纲）
+
+注意：范文必须是可直接参考的学生习作水准，不要写成评论或教案。
+"""
+
+
+def _chinese_curriculum(level, grade: str | None) -> str:
+    is_senior = level == SchoolLevel.senior_high or level == "senior_high"
+    return CURRICULUM_CHINESE_SENIOR if is_senior else CURRICULUM_CHINESE_JUNIOR
+
+
+def _grade_text(grade: str | None) -> str:
+    if grade and grade.strip():
+        return grade.strip()
+    return "该学段学生"
+
+
+def split_composition_sections(text: str) -> tuple[str, str]:
+    import re
+
+    text = text.strip()
+    if "## 范文" not in text:
+        return text.replace("## 写作方案", "").strip(), ""
+    parts = re.split(r"\n##\s*范文\s*\n", text, maxsplit=1)
+    plan = parts[0].replace("## 写作方案", "").strip()
+    essay = parts[1].strip() if len(parts) > 1 else ""
+    return plan, essay
+
+
+async def generate_composition(
+    cfg: AIConfig,
+    topic: str,
+    school_level=None,
+    grade: str | None = None,
+) -> tuple[str, str]:
+    stage = school_level_label(school_level)
+    grade_text = _grade_text(grade)
+    curriculum = _chinese_curriculum(school_level, grade)
+    prompt = COMPOSITION_PROMPT.format(
+        stage=stage,
+        grade_text=grade_text,
+        curriculum=curriculum,
+        topic=topic.strip(),
+    )
+    full = await generate_text(prompt, cfg, temperature=0.35)
+    return split_composition_sections(full)
+
+
+def composition_markdown(topic: str, writing_plan: str | None, sample_essay: str | None) -> str:
+    parts = [f"# 作文题目\n\n{topic.strip()}", ""]
+    if writing_plan:
+        parts.extend(["## 写作方案", "", writing_plan.strip(), ""])
+    if sample_essay:
+        parts.extend(["## 范文", "", sample_essay.strip(), ""])
+    return "\n".join(parts).strip() + "\n"

backend/app/services/migrate.py

@@ -91,3 +91,13 @@ def run_migrations() -> None:
         if "review_statuses_json" not in ss_columns:
             with engine.begin() as conn:
                 conn.execute(text("ALTER TABLE subject_scores ADD COLUMN review_statuses_json TEXT"))
+
+    if "system_settings" in tables:
+        ss_columns = {col["name"] for col in inspector.get_columns("system_settings")}
+        if "ai_review_enabled" not in ss_columns:
+            with engine.begin() as conn:
+                conn.execute(
+                    text(
+                        "ALTER TABLE system_settings ADD COLUMN ai_review_enabled BOOLEAN NOT NULL DEFAULT TRUE"
+                    )
+                )

frontend/dist/index.html

@@ -9,7 +9,7 @@
     <meta name="author" content="马建军" />
     <meta name="copyright" content="Copyright (c) 马建军. All rights reserved." />
     <title>中学成绩档案</title>
-    <script type="module" crossorigin src="/assets/index-CmdQeYPX.js"></script>
+    <script type="module" crossorigin src="/assets/index-BFUIx7uW.js"></script>
     <link rel="stylesheet" crossorigin href="/assets/index-BSTLtBBx.css">
   </head>
   <body>

frontend/src/api/client.ts

@@ -2,6 +2,9 @@ import axios from 'axios'
 import type {
   AdminUser,
   AIProvider,
+  AppFeatures,
+  Composition,
+  CompositionInputMode,
   Exam,
   PublicSettings,
   ScoreInput,
@@ -66,12 +69,14 @@ export const authApi = {
 
 export const settingsApi = {
   public: () => api.get<PublicSettings>('/settings/public'),
+  appFeatures: () => api.get<AppFeatures>('/settings/app-features'),
 }
 
 export const adminApi = {
   getSettings: () => api.get<SystemSettings>('/admin/settings'),
   updateSettings: (data: {
     registration_enabled?: boolean
+    ai_review_enabled?: boolean
     ai_provider?: AIProvider
     ollama_base_url?: string | null
     ollama_model?: string | null
@@ -130,13 +135,32 @@ export const examApi = {
       params: { subject_id: subjectId },
     }),
   exportCsv: (studentId: string) =>
-    api.get(`/students/${studentId}/scores/export`, { responseType: 'blob' }),
+    api.get<Blob>(`/students/${studentId}/scores/export`, {
+      responseType: 'blob',
+      validateStatus: (status) => status >= 200 && status < 300,
+    }),
   reviewInsight: (studentId: string, subjectName: string) =>
     api.post<{ insight: string }>(`/students/${studentId}/review-insight`, {
       subject_name: subjectName,
     }),
 }
 
+export const compositionApi = {
+  list: (studentId: string) => api.get<Composition[]>(`/students/${studentId}/compositions`),
+  create: (studentId: string, data: { topic: string; input_mode?: CompositionInputMode }) =>
+    api.post<Composition>(`/students/${studentId}/compositions`, data),
+  get: (id: string) => api.get<Composition>(`/compositions/${id}`),
+  remove: (id: string) => api.delete(`/compositions/${id}`),
+  regenerate: (id: string) => api.post<Composition>(`/compositions/${id}/regenerate`),
+  ocr: (studentId: string, file: File) => {
+    const form = new FormData()
+    form.append('file', file)
+    return api.post<{ text: string }>(`/students/${studentId}/compositions/ocr`, form)
+  },
+  download: (id: string) =>
+    api.get(`/compositions/${id}/download`, { responseType: 'blob' }),
+}
+
 export const wrongQuestionApi = {
   list: (studentId: string, params?: { subject_id?: number; q?: string; category?: WrongQuestionCategory }) =>
     api.get<WrongQuestion[]>(`/students/${studentId}/wrong-questions`, { params }),

frontend/src/components/CompositionDetailModal.tsx

@@ -0,0 +1,113 @@
+import { DeleteOutlined, DownloadOutlined, ReloadOutlined } from '@ant-design/icons'
+import { Alert, Button, Modal, Popconfirm, Space, Spin, Tag, Typography } from 'antd'
+import ReactMarkdown from 'react-markdown'
+import type { Composition } from '../types'
+import { COMPOSITION_STATUS_LABELS } from '../types'
+
+interface Props {
+  item: Composition | null
+  open: boolean
+  onClose: () => void
+  onRegenerate: (id: string) => void
+  onDelete: (id: string) => void
+  onDownload: (item: Composition) => void
+  regenerating?: boolean
+}
+
+export default function CompositionDetailModal({
+  item,
+  open,
+  onClose,
+  onRegenerate,
+  onDelete,
+  onDownload,
+  regenerating,
+}: Props) {
+  if (!item) return null
+
+  const processing = item.status === 'pending' || item.status === 'generating'
+
+  return (
+    <Modal
+      title="作文详情"
+      open={open}
+      onCancel={onClose}
+      width="92%"
+      style={{ maxWidth: 860 }}
+      footer={
+        <Space wrap>
+          <Popconfirm title="确定删除？" onConfirm={() => onDelete(item.id)}>
+            <Button danger icon={<DeleteOutlined />}>
+              删除
+            </Button>
+          </Popconfirm>
+          <Button
+            icon={<ReloadOutlined />}
+            loading={regenerating}
+            onClick={() => onRegenerate(item.id)}
+          >
+            重新生成
+          </Button>
+          <Button
+            type="primary"
+            icon={<DownloadOutlined />}
+            disabled={item.status !== 'done'}
+            onClick={() => onDownload(item)}
+          >
+            下载 Markdown
+          </Button>
+        </Space>
+      }
+    >
+      <Space direction="vertical" size="middle" style={{ width: '100%' }}>
+        <div>
+          <Tag>{COMPOSITION_STATUS_LABELS[item.status]}</Tag>
+          <Tag>{item.input_mode === 'ocr' ? 'OCR 识别' : '手动输入'}</Tag>
+          <Typography.Text type="secondary" style={{ marginLeft: 8 }}>
+            {new Date(item.created_at).toLocaleString()}
+          </Typography.Text>
+        </div>
+        <div>
+          <Typography.Text strong>题目</Typography.Text>
+          <pre
+            style={{
+              marginTop: 8,
+              background: '#fafafa',
+              padding: 12,
+              borderRadius: 8,
+              whiteSpace: 'pre-wrap',
+            }}
+          >
+            {item.topic}
+          </pre>
+        </div>
+        {item.error_message && <Alert type="error" message={item.error_message} showIcon />}
+        {processing && (
+          <div style={{ textAlign: 'center', padding: 24 }}>
+            <Spin tip="正在生成写作方案与范文…" />
+          </div>
+        )}
+        {item.status === 'done' && (
+          <>
+            {item.writing_plan && (
+              <div>
+                <Typography.Title level={5}>写作方案</Typography.Title>
+                <div style={{ background: '#fafafa', padding: 12, borderRadius: 8 }}>
+                  <ReactMarkdown>{item.writing_plan}</ReactMarkdown>
+                </div>
+              </div>
+            )}
+            {item.sample_essay && (
+              <div>
+                <Typography.Title level={5}>范文</Typography.Title>
+                <div style={{ background: '#fafafa', padding: 12, borderRadius: 8 }}>
+                  <ReactMarkdown>{item.sample_essay}</ReactMarkdown>
+                </div>
+              </div>
+            )}
+          </>
+        )}
+      </Space>
+    </Modal>
+  )
+}

frontend/src/components/CompositionPanel.tsx

@@ -0,0 +1,211 @@
+import { UploadOutlined } from '@ant-design/icons'
+import { Button, Input, List, Space, Tag, Typography, Upload, message } from 'antd'
+import { useCallback, useEffect, useState } from 'react'
+import { compositionApi } from '../api/client'
+import type { Composition, CompositionInputMode, Student } from '../types'
+import { COMPOSITION_STATUS_LABELS } from '../types'
+import { SCHOOL_LEVEL_LABELS } from '../constants/school'
+import CompositionDetailModal from './CompositionDetailModal'
+
+interface Props {
+  studentId: string
+  student: Student
+}
+
+export default function CompositionPanel({ studentId, student }: Props) {
+  const [topic, setTopic] = useState('')
+  const [inputMode, setInputMode] = useState<CompositionInputMode>('manual')
+  const [items, setItems] = useState<Composition[]>([])
+  const [loading, setLoading] = useState(false)
+  const [ocrLoading, setOcrLoading] = useState(false)
+  const [creating, setCreating] = useState(false)
+  const [selected, setSelected] = useState<Composition | null>(null)
+  const [detailOpen, setDetailOpen] = useState(false)
+  const [regenerating, setRegenerating] = useState(false)
+
+  const load = useCallback(async () => {
+    setLoading(true)
+    try {
+      const { data } = await compositionApi.list(studentId)
+      setItems(data)
+      setSelected((prev) => {
+        if (!prev) return prev
+        return data.find((item) => item.id === prev.id) ?? prev
+      })
+    } finally {
+      setLoading(false)
+    }
+  }, [studentId])
+
+  useEffect(() => {
+    load()
+  }, [load])
+
+  useEffect(() => {
+    const hasProcessing = items.some(
+      (item) => item.status === 'pending' || item.status === 'generating',
+    )
+    if (!hasProcessing) return
+    const timer = window.setInterval(load, 4000)
+    return () => window.clearInterval(timer)
+  }, [items, load])
+
+  const handleOcr = async (file: File) => {
+    setOcrLoading(true)
+    try {
+      const { data } = await compositionApi.ocr(studentId, file)
+      setTopic(data.text)
+      setInputMode('ocr')
+      message.success('题目识别完成')
+    } catch {
+      message.error('题目识别失败')
+    } finally {
+      setOcrLoading(false)
+    }
+    return false
+  }
+
+  const handleGenerate = async () => {
+    if (!topic.trim()) {
+      message.warning('请输入或识别作文题目')
+      return
+    }
+    setCreating(true)
+    try {
+      const { data } = await compositionApi.create(studentId, {
+        topic: topic.trim(),
+        input_mode: inputMode,
+      })
+      message.success('已开始生成，请稍后在历史记录中查看')
+      setTopic('')
+      setInputMode('manual')
+      await load()
+      setSelected(data)
+      setDetailOpen(true)
+    } catch {
+      message.error('创建失败')
+    } finally {
+      setCreating(false)
+    }
+  }
+
+  const openDetail = (item: Composition) => {
+    setSelected(item)
+    setDetailOpen(true)
+  }
+
+  const handleRegenerate = async (id: string) => {
+    setRegenerating(true)
+    try {
+      const { data } = await compositionApi.regenerate(id)
+      message.info('正在重新生成…')
+      setSelected(data)
+      await load()
+    } catch {
+      message.error('重新生成失败')
+    } finally {
+      setRegenerating(false)
+    }
+  }
+
+  const handleDelete = async (id: string) => {
+    await compositionApi.remove(id)
+    message.success('已删除')
+    setDetailOpen(false)
+    setSelected(null)
+    load()
+  }
+
+  const handleDownload = async (item: Composition) => {
+    try {
+      const { data } = await compositionApi.download(item.id)
+      const url = URL.createObjectURL(data)
+      const a = document.createElement('a')
+      a.href = url
+      a.download = `${item.topic.slice(0, 20).replace(/[\\/:*?"<>|]/g, '_') || 'composition'}.md`
+      a.click()
+      URL.revokeObjectURL(url)
+    } catch {
+      message.error('下载失败')
+    }
+  }
+
+  const stage = SCHOOL_LEVEL_LABELS[student.school_level]
+  const gradeText = [stage, student.grade, student.class_name].filter(Boolean).join(' · ')
+
+  return (
+    <Space direction="vertical" size="large" style={{ width: '100%' }}>
+      <Typography.Paragraph type="secondary" style={{ marginBottom: 0 }}>
+        按 {gradeText || stage} 课内要求生成写作方案与范文，严禁超纲。题目可手动输入或拍照 OCR 识别。
+      </Typography.Paragraph>
+
+      <div>
+        <Typography.Text strong>作文题目</Typography.Text>
+        <Input.TextArea
+          rows={4}
+          value={topic}
+          onChange={(e) => {
+            setTopic(e.target.value)
+            setInputMode('manual')
+          }}
+          placeholder="输入作文题目，或通过下方上传题目图片 OCR 识别"
+          style={{ marginTop: 8 }}
+        />
+        <Space wrap style={{ marginTop: 12 }}>
+          <Upload beforeUpload={handleOcr} showUploadList={false} accept="image/*">
+            <Button icon={<UploadOutlined />} loading={ocrLoading}>
+              上传题目 OCR
+            </Button>
+          </Upload>
+          <Button type="primary" loading={creating} onClick={handleGenerate}>
+            生成写作方案与范文
+          </Button>
+        </Space>
+      </div>
+
+      <div>
+        <Typography.Title level={5} style={{ marginTop: 0 }}>
+          历史记录
+        </Typography.Title>
+        <List
+          loading={loading}
+          dataSource={items}
+          locale={{ emptyText: '暂无记录，请在上方输入题目并生成' }}
+          renderItem={(item) => (
+            <List.Item
+              actions={[
+                <Button type="link" onClick={() => openDetail(item)}>
+                  查看
+                </Button>,
+              ]}
+            >
+              <List.Item.Meta
+                title={
+                  <Space wrap>
+                    <Typography.Text ellipsis style={{ maxWidth: 420 }}>
+                      {item.topic}
+                    </Typography.Text>
+                    <Tag color={item.status === 'done' ? 'green' : item.status === 'failed' ? 'red' : 'blue'}>
+                      {COMPOSITION_STATUS_LABELS[item.status]}
+                    </Tag>
+                  </Space>
+                }
+                description={new Date(item.created_at).toLocaleString()}
+              />
+            </List.Item>
+          )}
+        />
+      </div>
+
+      <CompositionDetailModal
+        item={selected}
+        open={detailOpen}
+        onClose={() => setDetailOpen(false)}
+        onRegenerate={handleRegenerate}
+        onDelete={handleDelete}
+        onDownload={handleDownload}
+        regenerating={regenerating}
+      />
+    </Space>
+  )
+}

frontend/src/components/ReviewAiInsight.tsx

@@ -1,21 +1,33 @@
-import { ReloadOutlined } from '@ant-design/icons'
 import { Alert, Button, Spin, Typography } from 'antd'
 import { useCallback, useEffect, useState } from 'react'
 import ReactMarkdown from 'react-markdown'
-import { examApi } from '../api/client'
+import { examApi, settingsApi } from '../api/client'
 
 interface Props {
   studentId: string
   subjectName: string | null
 }
 
+function apiErrorMessage(err: unknown, fallback: string): string {
+  if (err && typeof err === 'object' && 'response' in err) {
+    const detail = (err as { response?: { data?: { detail?: unknown } } }).response?.data?.detail
+    if (typeof detail === 'string') return detail
+  }
+  return fallback
+}
+
 export default function ReviewAiInsight({ studentId, subjectName }: Props) {
+  const [enabled, setEnabled] = useState(true)
   const [insight, setInsight] = useState<string | null>(null)
   const [loading, setLoading] = useState(false)
   const [error, setError] = useState<string | null>(null)
 
+  useEffect(() => {
+    settingsApi.appFeatures().then(({ data }) => setEnabled(data.ai_review_enabled)).catch(() => {})
+  }, [])
+
   const loadInsight = useCallback(async () => {
-    if (!subjectName) {
+    if (!subjectName || !enabled) {
       setInsight(null)
       setError(null)
       return
@@ -25,17 +37,13 @@ export default function ReviewAiInsight({ studentId, subjectName }: Props) {
     try {
       const { data } = await examApi.reviewInsight(studentId, subjectName)
       setInsight(data.insight)
-    } catch (err: unknown) {
-      const detail =
-        err && typeof err === 'object' && 'response' in err
-          ? (err as { response?: { data?: { detail?: string } } }).response?.data?.detail
-          : null
-      setError(typeof detail === 'string' ? detail : 'AI 解读生成失败，请检查模型配置')
+    } catch (err) {
+      setError(apiErrorMessage(err, 'AI 解读生成失败，请检查模型配置'))
       setInsight(null)
     } finally {
       setLoading(false)
     }
-  }, [studentId, subjectName])
+  }, [studentId, subjectName, enabled])
 
   useEffect(() => {
     loadInsight()
@@ -43,18 +51,24 @@ export default function ReviewAiInsight({ studentId, subjectName }: Props) {
 
   if (!subjectName) return null
 
+  if (!enabled) {
+    return (
+      <Alert
+        style={{ marginTop: 20 }}
+        type="info"
+        showIcon
+        message="AI 复盘解读已在系统设置中关闭"
+      />
+    )
+  }
+
   return (
     <div style={{ marginTop: 20 }}>
       <div style={{ display: 'flex', alignItems: 'center', gap: 12, marginBottom: 12 }}>
         <Typography.Text strong style={{ fontSize: 15 }}>
           AI 解读与建议 · {subjectName}
         </Typography.Text>
-        <Button
-          size="small"
-          icon={<ReloadOutlined />}
-          loading={loading}
-          onClick={loadInsight}
-        >
+        <Button size="small" loading={loading} onClick={loadInsight}>
           重新生成
         </Button>
       </div>
@@ -63,9 +77,7 @@ export default function ReviewAiInsight({ studentId, subjectName }: Props) {
           <Spin tip="AI 正在分析复盘数据…" />
         </div>
       )}
-      {error && (
-        <Alert type="error" message={error} showIcon style={{ marginBottom: 12 }} />
-      )}
+      {error && <Alert type="error" message={error} showIcon style={{ marginBottom: 12 }} />}
       {insight && (
         <div
           style={{

frontend/src/pages/SettingsPage.tsx

@@ -69,6 +69,12 @@ export default function SettingsPage() {
     message.success(checked ? '已开放注册' : '已关闭注册')
   }
 
+  const toggleAiReview = async (checked: boolean) => {
+    const { data } = await adminApi.updateSettings({ ai_review_enabled: checked })
+    setSettings(data)
+    message.success(checked ? '已开启 AI 复盘解读' : '已关闭 AI 复盘解读')
+  }
+
   const saveProfile = async (values: {
     username: string
     current_password?: string
@@ -247,6 +253,19 @@ export default function SettingsPage() {
                     <Typography.Paragraph type="secondary">
                       错题/奥数解法将按学生学段（初中/高中）生成，并严格禁止超纲解题。
                     </Typography.Paragraph>
+                    <Form.Item label="AI 复盘解读">
+                      <Space>
+                        <Switch
+                          checked={settings?.ai_review_enabled ?? true}
+                          onChange={toggleAiReview}
+                        />
+                        <Typography.Text>
+                          {settings?.ai_review_enabled !== false
+                            ? '已开启：成绩复盘页可生成 AI 解读'
+                            : '已关闭：成绩复盘页不调用 AI'}
+                        </Typography.Text>
+                      </Space>
+                    </Form.Item>
                     <Button type="primary" htmlType="submit">
                       保存 AI 配置
                     </Button>

frontend/src/pages/StudentDetailPage.tsx

@@ -9,10 +9,11 @@ import TrendChart from '../components/TrendChart'
 import WrongQuestionList from '../components/WrongQuestionList'
 import WrongQuestionUpload, { WrongQuestionFilters } from '../components/WrongQuestionUpload'
 import ExamReviewPanel from '../components/ExamReviewPanel'
+import CompositionPanel from '../components/CompositionPanel'
 import { formatStudentMeta, SCHOOL_LEVEL_LABELS } from '../constants/school'
 import type { Exam, Student, Subject, TrendResponse, WrongQuestion } from '../types'
 
-const TAB_KEYS = ['scores', 'overview', 'trend', 'review', 'wrong', 'olympiad'] as const
+const TAB_KEYS = ['scores', 'overview', 'trend', 'review', 'composition', 'wrong', 'olympiad'] as const
 type TabKey = (typeof TAB_KEYS)[number]
 
 export default function StudentDetailPage() {
@@ -114,11 +115,30 @@ export default function StudentDetailPage() {
   const handleExport = async () => {
     if (!id) return
     try {
-      const { data } = await examApi.exportCsv(id)
-      const url = URL.createObjectURL(data)
+      const res = await examApi.exportCsv(id)
+      const blob = res.data
+      if (blob.type?.includes('application/json')) {
+        const text = await blob.text()
+        try {
+          const err = JSON.parse(text) as { detail?: string }
+          message.error(err.detail || '导出失败')
+        } catch {
+          message.error('导出失败')
+        }
+        return
+      }
+      const disposition = res.headers['content-disposition'] as string | undefined
+      let filename = `${student?.name || 'student'}_scores.csv`
+      if (disposition) {
+        const utf8Match = disposition.match(/filename\*=UTF-8''([^;]+)/i)
+        const plainMatch = disposition.match(/filename="?([^";]+)"?/i)
+        if (utf8Match?.[1]) filename = decodeURIComponent(utf8Match[1])
+        else if (plainMatch?.[1]) filename = plainMatch[1]
+      }
+      const url = URL.createObjectURL(blob)
       const a = document.createElement('a')
       a.href = url
-      a.download = `${student?.name || 'student'}_scores.csv`
+      a.download = filename
       a.click()
       URL.revokeObjectURL(url)
     } catch {
@@ -198,6 +218,11 @@ export default function StudentDetailPage() {
             label: '成绩复盘',
             children: <ExamReviewPanel studentId={id!} exams={exams} onRefresh={loadExams} />,
           },
+          {
+            key: 'composition',
+            label: '作文区',
+            children: <CompositionPanel studentId={id!} student={student} />,
+          },
           {
             key: 'wrong',
             label: '错题库',

frontend/src/types/index.ts

@@ -15,8 +15,13 @@ export interface PublicSettings {
   registration_enabled: boolean
 }
 
+export interface AppFeatures {
+  ai_review_enabled: boolean
+}
+
 export interface SystemSettings {
   registration_enabled: boolean
+  ai_review_enabled: boolean
   ai_provider: AIProvider
   ollama_base_url: string | null
   ollama_model: string | null
@@ -167,3 +172,26 @@ export const STATUS_LABELS: Record<WrongQuestionStatus, string> = {
   solved: '已生成解法',
   failed: '失败',
 }
+
+export type CompositionStatus = 'pending' | 'generating' | 'done' | 'failed'
+export type CompositionInputMode = 'manual' | 'ocr'
+
+export interface Composition {
+  id: string
+  student_id: string
+  topic: string
+  input_mode: CompositionInputMode
+  writing_plan: string | null
+  sample_essay: string | null
+  error_message: string | null
+  status: CompositionStatus
+  created_at: string
+  updated_at: string
+}
+
+export const COMPOSITION_STATUS_LABELS: Record<CompositionStatus, string> = {
+  pending: '等待生成',
+  generating: '生成中',
+  done: '已完成',
+  failed: '失败',
+}