Merge branch 'feature/goal-management'

app/__init__.py

@@ -34,14 +34,23 @@ def create_app():
     # 注册蓝图
     from app.routes import main_bp
     from app.routes.templates import templates_bp
+    from app.routes.goals import goals_bp
 
     app.register_blueprint(main_bp)
     app.register_blueprint(templates_bp)
+    app.register_blueprint(goals_bp)
+    from app.routes import student_goals
+    app.register_blueprint(student_goals.student_goals_bp)
 
     # 创建数据库和目录
     with app.app_context():
         os.makedirs(os.path.join(BASE_DIR, "data"), exist_ok=True)
         os.makedirs(app.config["PDF_OUTPUT_DIR"], exist_ok=True)
+
+        # 确保所有模型都被导入
+        from app.models import Student, Problem, StudentProblem, Template, PracticePlan
+        from app.models import Goal, GoalRelation, StudentGoal  # 新增目标相关模型
+
         db.create_all()
 
         # 简单迁移：为已存在的数据库添加新字段（必须在init_default_templates之前）

app/routes/__init__.py

@@ -5,4 +5,4 @@ from flask import Blueprint
 main_bp = Blueprint("main", __name__)
 
 # 导入各路由模块
-from app.routes import students, plans, problems, settings, auth, classes, users, backup
+from app.routes import students, plans, problems, settings, auth, classes, users, backup, goals

app/routes/goals.py

@@ -0,0 +1,122 @@
+from flask import Blueprint, request, jsonify, render_template
+from app.models import db, Goal
+from app.routes.auth import login_required_json, admin_required
+from app.routes import main_bp
+
+goals_bp = Blueprint("goals", __name__)
+
+# 目标管理页面路由
+@main_bp.route("/goals")
+@admin_required
+def goals_page():
+    """目标管理页面"""
+    return render_template("goals.html", active_nav="goals")
+
+@goals_bp.route("/api/goals", methods=["GET"])
+@login_required_json
+def get_goals():
+    goals = Goal.query.order_by(Goal.created_at.desc()).all()
+    return jsonify([g.to_dict() for g in goals])
+
+@goals_bp.route("/api/goals", methods=["POST"])
+@login_required_json
+def create_goal():
+    data = request.get_json()
+    goal = Goal(name=data["name"], content=data.get("content", ""))
+    db.session.add(goal)
+    db.session.commit()
+    return jsonify(goal.to_dict()), 201
+
+@goals_bp.route("/api/goals/<int:goal_id>", methods=["GET"])
+@login_required_json
+def get_goal(goal_id):
+    goal = Goal.query.get_or_404(goal_id)
+    return jsonify(goal.to_dict())
+
+@goals_bp.route("/api/goals/<int:goal_id>", methods=["PUT"])
+@login_required_json
+def update_goal(goal_id):
+    goal = Goal.query.get_or_404(goal_id)
+    data = request.get_json()
+    if "name" in data:
+        goal.name = data["name"]
+    if "content" in data:
+        goal.content = data["content"]
+    db.session.commit()
+    return jsonify(goal.to_dict())
+
+@goals_bp.route("/api/goals/<int:goal_id>", methods=["DELETE"])
+@login_required_json
+def delete_goal(goal_id):
+    goal = Goal.query.get_or_404(goal_id)
+    db.session.delete(goal)
+    db.session.commit()
+    return jsonify({"message": "删除成功"})
+
+# ===== 以下是 Task 3 的循环检测和关联 API =====
+
+def _has_cycle(parent_id, child_id):
+    """检测添加 child_id 作为 parent_id 的子目标是否会形成循环"""
+    visited = set()
+    stack = [child_id]
+    while stack:
+        current = stack.pop()
+        if current == parent_id:
+            return True
+        if current in visited:
+            continue
+        visited.add(current)
+        from app.models import GoalRelation
+        for rel in GoalRelation.query.filter_by(parent_goal_id=current).all():
+            stack.append(rel.child_goal_id)
+    return False
+
+@goals_bp.route("/api/goals/<int:goal_id>/children", methods=["GET"])
+@login_required_json
+def get_goal_children(goal_id):
+    from app.models import GoalRelation
+    relations = GoalRelation.query.filter_by(parent_goal_id=goal_id).all()
+    child_ids = [r.child_goal_id for r in relations]
+    children = Goal.query.filter(Goal.id.in_(child_ids)).all() if child_ids else []
+    return jsonify([c.to_dict() for c in children])
+
+@goals_bp.route("/api/goals/<int:goal_id>/parents", methods=["GET"])
+@login_required_json
+def get_goal_parents(goal_id):
+    from app.models import GoalRelation
+    relations = GoalRelation.query.filter_by(child_goal_id=goal_id).all()
+    parent_ids = [r.parent_goal_id for r in relations]
+    parents = Goal.query.filter(Goal.id.in_(parent_ids)).all() if parent_ids else []
+    return jsonify([p.to_dict() for p in parents])
+
+@goals_bp.route("/api/goals/<int:goal_id>/children", methods=["POST"])
+@login_required_json
+def add_goal_child(goal_id):
+    from app.models import GoalRelation
+    data = request.get_json()
+    child_id = data["child_goal_id"]
+
+    if goal_id == child_id:
+        return jsonify({"error": "不能将目标关联到自身"}), 400
+
+    if _has_cycle(goal_id, child_id):
+        return jsonify({"error": "添加此关联会形成循环引用"}), 400
+
+    existing = GoalRelation.query.filter_by(parent_goal_id=goal_id, child_goal_id=child_id).first()
+    if existing:
+        return jsonify({"error": "关联已存在"}), 400
+
+    relation = GoalRelation(parent_goal_id=goal_id, child_goal_id=child_id)
+    db.session.add(relation)
+    db.session.commit()
+    return jsonify({"message": "添加成功"})
+
+@goals_bp.route("/api/goals/<int:goal_id>/children/<int:child_id>", methods=["DELETE"])
+@login_required_json
+def remove_goal_child(goal_id, child_id):
+    from app.models import GoalRelation
+    relation = GoalRelation.query.filter_by(parent_goal_id=goal_id, child_goal_id=child_id).first()
+    if relation:
+        db.session.delete(relation)
+        db.session.commit()
+    return jsonify({"message": "移除成功"})

app/routes/student_goals.py

@@ -0,0 +1,64 @@
+from flask import Blueprint, request, jsonify
+from app.models import db, StudentGoal, Goal
+from app.routes.auth import login_required_json
+
+student_goals_bp = Blueprint("student_goals", __name__)
+
+@student_goals_bp.route("/api/students/<int:student_id>/goals", methods=["GET"])
+@login_required_json
+def get_student_goals(student_id):
+    records = StudentGoal.query.filter_by(student_id=student_id).all()
+    return jsonify([r.to_dict() for r in records])
+
+@student_goals_bp.route("/api/students/<int:student_id>/goals", methods=["POST"])
+@login_required_json
+def assign_goal(student_id):
+    data = request.get_json()
+
+    # 检查目标是否存在
+    goal = Goal.query.get(data["goal_id"])
+    if not goal:
+        return jsonify({"error": "目标不存在"}), 404
+
+    # 检查是否已分配
+    existing = StudentGoal.query.filter_by(student_id=student_id, goal_id=data["goal_id"]).first()
+    if existing:
+        return jsonify({"error": "目标已分配"}), 400
+
+    record = StudentGoal(
+        student_id=student_id,
+        goal_id=data["goal_id"],
+        status=data.get("status", "未开始"),
+        mastery_level=data.get("mastery_level", 1),
+        deadline=data.get("deadline")
+    )
+    db.session.add(record)
+    db.session.commit()
+    return jsonify(record.to_dict()), 201
+
+@student_goals_bp.route("/api/students/<int:student_id>/goals/<int:goal_id>", methods=["PUT"])
+@login_required_json
+def update_student_goal(student_id, goal_id):
+    record = StudentGoal.query.filter_by(student_id=student_id, goal_id=goal_id).first_or_404()
+    data = request.get_json()
+
+    if "status" in data:
+        record.status = data["status"]
+        if data["status"] == "已完成" and not record.completed_at:
+            from datetime import datetime
+            record.completed_at = datetime.now()
+    if "mastery_level" in data:
+        record.mastery_level = data["mastery_level"]
+    if "deadline" in data:
+        record.deadline = data["deadline"]
+
+    db.session.commit()
+    return jsonify(record.to_dict())
+
+@student_goals_bp.route("/api/students/<int:student_id>/goals/<int:goal_id>", methods=["DELETE"])
+@login_required_json
+def remove_student_goal(student_id, goal_id):
+    record = StudentGoal.query.filter_by(student_id=student_id, goal_id=goal_id).first_or_404()
+    db.session.delete(record)
+    db.session.commit()
+    return jsonify({"message": "移除成功"})

app/templates/goals.html

@@ -0,0 +1,182 @@
+{% extends "base.html" %}
+
+{% block content %}
+<div class="container-fluid py-4">
+    <h2 class="mb-4">🎯 目标管理</h2>
+
+    <!-- 目标列表 -->
+    <div class="row">
+        <div class="col-12">
+            <div class="card">
+                <div class="card-header d-flex justify-content-between align-items-center">
+                    <h5 class="mb-0">目标库</h5>
+                    <button class="btn btn-primary btn-sm" data-bs-toggle="modal" data-bs-target="#goalModal">
+                        + 新建目标
+                    </button>
+                </div>
+                <div class="card-body">
+                    <div id="goals-grid" class="row g-3"></div>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+<!-- 目标编辑 Modal -->
+<div class="modal fade" id="goalModal" tabindex="-1">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="goalModalTitle">新建目标</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <input type="hidden" id="goal-id">
+                <div class="mb-3">
+                    <label class="form-label">目标名称</label>
+                    <input type="text" class="form-control" id="goal-name" required>
+                </div>
+                <div class="mb-3">
+                    <label class="form-label">目标内容 (Markdown)</label>
+                    <textarea class="form-control" id="goal-content" rows="8"></textarea>
+                </div>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
+                <button type="button" class="btn btn-primary" id="save-goal">保存</button>
+            </div>
+        </div>
+    </div>
+</div>
+
+<!-- 关系管理 Modal -->
+<div class="modal fade" id="relationModal" tabindex="-1">
+    <div class="modal-dialog modal-lg">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title">管理目标关系</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <input type="hidden" id="relation-goal-id">
+                <h6>上级目标（父目标）</h6>
+                <div id="parent-goals" class="mb-3"></div>
+                <hr>
+                <h6>下级目标（子目标）</h6>
+                <div id="child-goals" class="mb-3"></div>
+            </div>
+        </div>
+    </div>
+</div>
+{% endblock %}
+
+{% block scripts %}
+{{ super() }}
+<script>
+const API_BASE = '/api/goals';
+
+// 加载目标列表
+async function loadGoals() {
+    const res = await fetch(API_BASE);
+    const goals = await res.json();
+    const grid = document.getElementById('goals-grid');
+    grid.innerHTML = goals.map(g => `
+        <div class="col-md-4 col-lg-3">
+            <div class="card h-100">
+                <div class="card-body">
+                    <h6 class="card-title">${escapeHtml(g.name)}</h6>
+                    <p class="card-text small text-muted">${escapeHtml(g.content || '').substring(0, 100)}...</p>
+                </div>
+                <div class="card-footer bg-transparent">
+                    <button class="btn btn-sm btn-outline-primary" onclick="editGoal(${g.id})">编辑</button>
+                    <button class="btn btn-sm btn-outline-secondary" onclick="manageRelations(${g.id})">关联</button>
+                    <button class="btn btn-sm btn-outline-danger" onclick="deleteGoal(${g.id})">删除</button>
+                </div>
+            </div>
+        </div>
+    `).join('');
+}
+
+// 保存目标
+async function saveGoal() {
+    const id = document.getElementById('goal-id').value;
+    const name = document.getElementById('goal-name').value;
+    const content = document.getElementById('goal-content').value;
+
+    if (!name) { alert('请输入目标名称'); return; }
+
+    const method = id ? 'PUT' : 'POST';
+    const url = id ? `${API_BASE}/${id}` : API_BASE;
+
+    const res = await fetch(url, {
+        method,
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({name, content})
+    });
+
+    if (res.ok) {
+        bootstrap.Modal.getInstance(document.getElementById('goalModal')).hide();
+        loadGoals();
+    }
+}
+
+function editGoal(id) {
+    fetch(`${API_BASE}/${id}`)
+        .then(r => r.json())
+        .then(g => {
+            document.getElementById('goal-id').value = g.id;
+            document.getElementById('goal-name').value = g.name;
+            document.getElementById('goal-content').value = g.content || '';
+            document.getElementById('goalModalTitle').textContent = '编辑目标';
+            new bootstrap.Modal(document.getElementById('goalModal')).show();
+        });
+}
+
+async function deleteGoal(id) {
+    if (!confirm('确定删除此目标？')) return;
+    await fetch(`${API_BASE}/${id}`, {method: 'DELETE'});
+    loadGoals();
+}
+
+async function manageRelations(id) {
+    document.getElementById('relation-goal-id').value = id;
+
+    const [parents, children] = await Promise.all([
+        fetch(`${API_BASE}/${id}/parents`).then(r => r.json()),
+        fetch(`${API_BASE}/${id}/children`).then(r => r.json())
+    ]);
+
+    document.getElementById('parent-goals').innerHTML = parents.map(g =>
+        `<span class="badge bg-info me-1 mb-1">${escapeHtml(g.name)} <button type="button" class="btn-close btn-close-white ms-1" onclick="removeRelation(${id}, ${g.id}, 'parent')"></button></span>`
+    ).join('') || '<span class="text-muted">无</span>';
+
+    document.getElementById('child-goals').innerHTML = children.map(g =>
+        `<span class="badge bg-primary me-1 mb-1">${escapeHtml(g.name)} <button type="button" class="btn-close btn-close-white ms-1" onclick="removeRelation(${id}, ${g.id}, 'child')"></button></span>`
+    ).join('') || '<span class="text-muted">无</span>';
+
+    new bootstrap.Modal(document.getElementById('relationModal')).show();
+}
+
+async function removeRelation(parentId, childId, type) {
+    const url = type === 'parent'
+        ? `${API_BASE}/${childId}/children/${parentId}`
+        : `${API_BASE}/${parentId}/children/${childId}`;
+    await fetch(url, {method: 'DELETE'});
+    manageRelations(parentId);
+}
+
+function escapeHtml(text) {
+    const div = document.createElement('div');
+    div.textContent = text;
+    return div.innerHTML;
+}
+
+document.getElementById('save-goal').addEventListener('click', saveGoal);
+document.getElementById('goalModal').addEventListener('hidden.bs.modal', () => {
+    document.getElementById('goal-id').value = '';
+    document.getElementById('goalModalTitle').textContent = '新建目标';
+});
+
+loadGoals();
+</script>
+{% endblock %}

app/templates/student.html

@@ -56,6 +56,19 @@
             </div>
         </div>
 
+        <!-- 学员目标区块 -->
+        <div class="card mb-4">
+            <div class="card-header d-flex justify-content-between align-items-center">
+                <h5 class="mb-0">🎯 练习目标</h5>
+                <button class="btn btn-sm btn-primary" data-bs-toggle="modal" data-bs-target="#assignGoalModal">
+                    + 分配目标
+                </button>
+            </div>
+            <div class="card-body">
+                <div id="student-goals-list"></div>
+            </div>
+        </div>
+
         <div class="card">
             <div class="card-header d-flex justify-content-between align-items-center">
                 <h6 class="mb-0"><i class="bi bi-clipboard-check"></i> 练习方案</h6>
@@ -238,19 +251,57 @@
         </div>
     </div>
 </div>
+
+<!-- 分配目标 Modal -->
+<div class="modal fade" id="assignGoalModal" tabindex="-1">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title">分配目标</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <div class="mb-3">
+                    <label class="form-label">选择目标</label>
+                    <select class="form-select" id="assign-goal-select"></select>
+                </div>
+                <div class="mb-3">
+                    <label class="form-label">状态</label>
+                    <select class="form-select" id="assign-status">
+                        <option value="未开始">未开始</option>
+                        <option value="进行中">进行中</option>
+                    </select>
+                </div>
+                <div class="mb-3">
+                    <label class="form-label">掌握程度 (1-5)</label>
+                    <input type="number" class="form-control" id="assign-mastery" value="1" min="1" max="5">
+                </div>
+                <div class="mb-3">
+                    <label class="form-label">截止日期</label>
+                    <input type="date" class="form-control" id="assign-deadline">
+                </div>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
+                <button type="button" class="btn btn-primary" id="confirm-assign-goal">分配</button>
+            </div>
+        </div>
+    </div>
+</div>
 {% endblock %}
 
 {% block extra_js %}
 <script>
 const currentStudentId = {{ student.id }};
 const studentName = "{{ student.name }}";
-let problemModal, editProblemModal, generateModal, editStudentModal;
+let problemModal, editProblemModal, generateModal, editStudentModal, assignGoalModal;
 
 document.addEventListener('DOMContentLoaded', function() {
     problemModal = new bootstrap.Modal(document.getElementById('addProblemModal'));
     editProblemModal = new bootstrap.Modal(document.getElementById('editProblemModal'));
     generateModal = new bootstrap.Modal(document.getElementById('generatePlanModal'));
     editStudentModal = new bootstrap.Modal(document.getElementById('editStudentModal'));
+    assignGoalModal = new bootstrap.Modal(document.getElementById('assignGoalModal'));
 
     // 填充编辑学员表单初始值
     document.getElementById('editStudentName').value = document.getElementById('detailName').textContent;
@@ -262,6 +313,7 @@ document.addEventListener('DOMContentLoaded', function() {
     loadProblems();
     loadPlans();
     loadProblemOptions();
+    loadStudentGoals();
 });
 
 async function loadProblemOptions() {
@@ -571,6 +623,111 @@ async function deletePlan(id) {
     }
 }
 
+// ===== 目标相关 =====
+async function loadStudentGoals() {
+    const res = await fetch(`/api/students/${currentStudentId}/goals`);
+    const goals = await res.json();
+
+    if (goals.length === 0) {
+        document.getElementById('student-goals-list').innerHTML =
+            '<p class="text-muted">暂无分配的目标</p>';
+        return;
+    }
+
+    document.getElementById('student-goals-list').innerHTML = goals.map(g => `
+        <div class="d-flex justify-content-between align-items-center mb-2 p-2 border rounded">
+            <div>
+                <strong>${escapeHtml(g.goal_name)}</strong>
+                <div class="small text-muted">
+                    掌握程度：${'⭐'.repeat(g.mastery_level)}${'☆'.repeat(5-g.mastery_level)}
+                    | 状态：${g.status}
+                    ${g.deadline ? '| 截止：'+g.deadline : ''}
+                </div>
+            </div>
+            <div>
+                <button class="btn btn-sm btn-outline-primary" onclick="editStudentGoal(${g.goal_id})">编辑</button>
+                <button class="btn btn-sm btn-outline-danger" onclick="removeStudentGoal(${g.goal_id})">移除</button>
+            </div>
+        </div>
+    `).join('');
+}
+
+async function editStudentGoal(goalId) {
+    const goal = await fetch(`/api/students/${currentStudentId}/goals`).then(r => r.json())
+        .then(goals => goals.find(g => g.goal_id === goalId));
+
+    const status = prompt('状态 (未开始/进行中/已完成)', goal.status);
+    const mastery = prompt('掌握程度 (1-5)', goal.mastery_level);
+
+    if (status && mastery) {
+        await fetch(`/api/students/${currentStudentId}/goals/${goalId}`, {
+            method: 'PUT',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({status, mastery_level: parseInt(mastery)})
+        });
+        loadStudentGoals();
+    }
+}
+
+async function removeStudentGoal(goalId) {
+    if (!confirm('确定移除此目标？')) return;
+    await fetch(`/api/students/${currentStudentId}/goals/${goalId}`, {method: 'DELETE'});
+    loadStudentGoals();
+}
+
+// 加载可选目标列表到 Modal
+async function loadGoalOptions() {
+    const res = await fetch('/api/goals');
+    const goals = await res.json();
+    const select = document.getElementById('assign-goal-select');
+
+    // 获取已分配的目标
+    const assignedRes = await fetch(`/api/students/${currentStudentId}/goals`);
+    const assigned = await assignedRes.json();
+    const assignedIds = assigned.map(g => g.goal_id);
+
+    select.innerHTML = goals
+        .filter(g => !assignedIds.includes(g.id))
+        .map(g => `<option value="${g.id}">${escapeHtml(g.name)}</option>`)
+        .join('');
+}
+
+document.getElementById('confirm-assign-goal').addEventListener('click', async () => {
+    const goalId = document.getElementById('assign-goal-select').value;
+    const status = document.getElementById('assign-status').value;
+    const mastery = document.getElementById('assign-mastery').value;
+    const deadline = document.getElementById('assign-deadline').value;
+
+    if (!goalId) { alert('请选择目标'); return; }
+
+    const res = await fetch(`/api/students/${currentStudentId}/goals`, {
+        method: 'POST',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({
+            goal_id: parseInt(goalId),
+            status,
+            mastery_level: parseInt(mastery),
+            deadline: deadline || null
+        })
+    });
+
+    if (res.ok) {
+        assignGoalModal.hide();
+        loadStudentGoals();
+    } else {
+        const err = await res.json();
+        alert(err.error || '分配失败');
+    }
+});
+
+document.getElementById('assignGoalModal').addEventListener('show.bs.modal', loadGoalOptions);
+
+function escapeHtml(text) {
+    const div = document.createElement('div');
+    div.textContent = text;
+    return div.innerHTML;
+}
+
 function showToast(message, type) {
     const toast = document.createElement('div');
     toast.className = 'toast-message alert alert-' + (type === 'success' ? 'success' : 'danger');

docs/API.md

@@ -523,6 +523,89 @@ POST /api/config/test
 
 ---
 
+## 目标管理 API
+
+### GET /api/goals
+获取所有目标
+
+**响应**：
+```json
+[
+  {
+    "id": 1,
+    "name": "掌握基本音阶",
+    "content": "...",
+    "created_at": "2026-04-23T10:00:00",
+    "updated_at": "2026-04-23T10:00:00"
+  }
+]
+```
+
+### POST /api/goals
+创建新目标
+
+**请求体**：
+```json
+{
+  "name": "目标名称",
+  "content": "目标内容（Markdown）"
+}
+```
+
+### GET /api/goals/{id}
+获取单个目标
+
+### PUT /api/goals/{id}
+更新目标
+
+### DELETE /api/goals/{id}
+删除目标
+
+### GET /api/goals/{id}/children
+获取目标的子目标
+
+### GET /api/goals/{id}/parents
+获取目标的父目标
+
+### POST /api/goals/{id}/children
+添加子目标关联（含循环检测）
+
+**请求体**：
+```json
+{
+  "child_goal_id": 2
+}
+```
+
+### DELETE /api/goals/{id}/children/{child_id}
+移除子目标关联
+
+## 学员目标 API
+
+### GET /api/students/{id}/goals
+获取学员的所有目标
+
+### POST /api/students/{id}/goals
+为学员分配目标
+
+**请求体**：
+```json
+{
+  "goal_id": 1,
+  "status": "未开始",
+  "mastery_level": 1,
+  "deadline": "2026-05-01"
+}
+```
+
+### PUT /api/students/{id}/goals/{goal_id}
+更新学员目标状态/掌握程度
+
+### DELETE /api/students/{id}/goals/{goal_id}
+移除学员的目标
+
+---
+
 ## 权限说明
 
 | 接口 | 管理员 | 普通用户 |

docs/MODELS.md

@@ -295,3 +295,47 @@ SELECT * FROM users;
 | 90分钟 | 高级学员 |
 | 120分钟 | 专业学员 |
 | 150分钟以上 | 竞技水平 |
+
+---
+
+## 目标管理模块
+
+### Goal (目标表)
+
+| 字段 | 类型 | 说明 |
+|------|------|------|
+| id | Integer | 主键 |
+| name | String(100) | 目标名称 |
+| content | Text | 目标内容（Markdown） |
+| created_at | DateTime | 创建时间 |
+| updated_at | DateTime | 更新时间 |
+
+### GoalRelation (目标关联表)
+
+自关联多对多关系，用于表示目标之间的父子关系（DAG）。
+
+| 字段 | 类型 | 说明 |
+|------|------|------|
+| parent_goal_id | Integer | 父目标ID，外键 |
+| child_goal_id | Integer | 子目标ID，外键 |
+
+**关系类型**：自引用多对多（一个目标可以有多个子目标，也可以有多个父目标）
+
+**约束**：通过应用层循环检测防止形成循环
+
+### StudentGoal (学员目标记录表)
+
+| 字段 | 类型 | 说明 |
+|------|------|------|
+| id | Integer | 主键 |
+| student_id | Integer | 学员ID，外键 |
+| goal_id | Integer | 目标ID，外键 |
+| status | String(20) | 状态：未开始/进行中/已完成 |
+| mastery_level | Integer | 掌握程度 1-5 |
+| deadline | DateTime | 截止日期 |
+| completed_at | DateTime | 完成时间 |
+| created_at | DateTime | 创建时间 |
+
+**关系**：
+- 一个学员可以分配多个目标
+- 一个目标可以分配给多个学员

docs/STRUCTURE.md

@@ -21,7 +21,9 @@
 │   │   ├── problems.py        # 问题记录API
 │   │   ├── plans.py           # 方案生成API
 │   │   ├── settings.py        # 系统设置API
-│   │   └── classes.py         # 班级管理API（新增）
+│   │   ├── classes.py         # 班级管理API
+│   │   ├── goals.py          # 目标管理 API
+│   │   └── student_goals.py  # 学员目标 API
 │   │
 │   ├── services/              # 业务逻辑
 │   │   ├── plan_generator.py  # 方案生成器
@@ -38,6 +40,7 @@
 │       ├── setup.html         # 初始设置页面（独立）
 │       ├── users.html         # 用户管理页面（继承base）
 │       ├── classes.html       # 班级管理页面（继承base）
+│       ├── goals.html        # 目标管理页面
 │       ├── templates.html     # 模板管理页面（继承base）
 │       ├── api_settings.html  # API设置页面（继承base）
 │       └── wechat_card.html   # 微信卡片模板（独立）