update:1.重构项目数据库初始化和迁移逻辑，使用Alembic数据库管理工具

backend/alembic/sqlite/.gitkeep

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+# 此文件确保 versions 目录被 Git 追踪
+# 迁移版本文件将存放在此目录

backend/alembic/sqlite/env.py

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+"""Alembic 环境配置文件 - SQLite"""
+import asyncio
+import os
+import sys
+from logging.config import fileConfig
+
+from sqlalchemy import pool
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+
+from alembic import context
+
+# 添加项目根目录到 Python 路径
+project_root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+if project_root not in sys.path:
+    sys.path.insert(0, project_root)
+
+# 导入应用配置
+from app.config import settings
+
+# 导入 Base 和所有模型
+from app.database import Base
+from app.models import (
+    Project, Outline, Character, Chapter, GenerationHistory,
+    Settings, WritingStyle, ProjectDefaultStyle,
+    RelationshipType, CharacterRelationship, Organization, OrganizationMember,
+    StoryMemory, PlotAnalysis, AnalysisTask, BatchGenerationTask,
+    RegenerationTask, Career, CharacterCareer, User, MCPPlugin, PromptTemplate
+)
+
+# Alembic Config 对象
+config = context.config
+
+# 设置数据库连接字符串（从环境变量读取）
+config.set_main_option("sqlalchemy.url", settings.database_url)
+
+# 配置日志
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# 设置 target_metadata 为应用的 Base.metadata
+target_metadata = Base.metadata
+
+
+def run_migrations_offline() -> None:
+    """在'离线'模式下运行迁移"""
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+        compare_type=True,
+        compare_server_default=True,
+        render_as_batch=True,  # SQLite 必须启用批处理模式
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def do_run_migrations(connection: Connection) -> None:
+    """执行迁移的核心函数 - SQLite 专用"""
+    context.configure(
+        connection=connection,
+        target_metadata=target_metadata,
+        compare_type=True,
+        compare_server_default=True,
+        render_as_batch=True,  # SQLite 必须启用批处理模式
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_async_migrations() -> None:
+    """在'在线'模式下运行异步迁移"""
+    configuration = config.get_section(config.config_ini_section, {})
+    configuration["sqlalchemy.url"] = settings.database_url
+    
+    connectable = async_engine_from_config(
+        configuration,
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+
+    await connectable.dispose()
+
+
+def run_migrations_online() -> None:
+    """在'在线'模式下运行迁移"""
+    asyncio.run(run_async_migrations())
+
+
+# 根据上下文选择运行模式
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

backend/alembic/sqlite/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

backend/alembic/sqlite/versions/20251226_1322_fbeb1038c728_初始化sqlite数据库.py

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+"""初始化SQLite数据库
+
+Revision ID: fbeb1038c728
+Revises: 
+Create Date: 2025-12-26 13:22:53.151546
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'fbeb1038c728'
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('batch_generation_tasks',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('project_id', sa.String(length=36), nullable=False, comment='项目ID'),
+    sa.Column('user_id', sa.String(length=100), nullable=False, comment='用户ID'),
+    sa.Column('start_chapter_number', sa.Integer(), nullable=False, comment='起始章节序号'),
+    sa.Column('chapter_count', sa.Integer(), nullable=False, comment='生成章节数量'),
+    sa.Column('chapter_ids', sa.JSON(), nullable=False, comment='待生成的章节ID列表'),
+    sa.Column('style_id', sa.Integer(), nullable=True, comment='使用的写作风格ID'),
+    sa.Column('target_word_count', sa.Integer(), nullable=True, comment='目标字数'),
+    sa.Column('enable_analysis', sa.Boolean(), nullable=True, comment='是否启用同步分析'),
+    sa.Column('status', sa.String(length=20), nullable=True, comment='任务状态: pending/running/completed/failed/cancelled'),
+    sa.Column('total_chapters', sa.Integer(), nullable=True, comment='总章节数'),
+    sa.Column('completed_chapters', sa.Integer(), nullable=True, comment='已完成章节数'),
+    sa.Column('failed_chapters', sa.JSON(), nullable=True, comment='失败的章节信息列表'),
+    sa.Column('current_chapter_id', sa.String(length=36), nullable=True, comment='当前正在生成的章节ID'),
+    sa.Column('current_chapter_number', sa.Integer(), nullable=True, comment='当前正在生成的章节序号'),
+    sa.Column('current_retry_count', sa.Integer(), nullable=True, comment='当前章节重试次数'),
+    sa.Column('max_retries', sa.Integer(), nullable=True, comment='最大重试次数'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('started_at', sa.DateTime(), nullable=True, comment='开始时间'),
+    sa.Column('completed_at', sa.DateTime(), nullable=True, comment='完成时间'),
+    sa.Column('error_message', sa.String(length=500), nullable=True, comment='错误信息'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('mcp_plugins',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('user_id', sa.String(length=50), nullable=False, comment='用户ID'),
+    sa.Column('plugin_name', sa.String(length=100), nullable=False, comment='插件名称（唯一标识）'),
+    sa.Column('display_name', sa.String(length=200), nullable=False, comment='显示名称'),
+    sa.Column('description', sa.Text(), nullable=True, comment='插件描述'),
+    sa.Column('plugin_type', sa.String(length=50), nullable=True, comment='插件类型：http/stdio'),
+    sa.Column('server_url', sa.String(length=500), nullable=True, comment='服务器URL（HTTP类型）'),
+    sa.Column('command', sa.String(length=500), nullable=True, comment='启动命令（stdio类型）'),
+    sa.Column('args', sa.JSON(), nullable=True, comment='命令参数（stdio类型）'),
+    sa.Column('env', sa.JSON(), nullable=True, comment='环境变量'),
+    sa.Column('headers', sa.JSON(), nullable=True, comment='HTTP请求头'),
+    sa.Column('config', sa.JSON(), nullable=True, comment='插件特定配置（JSON）'),
+    sa.Column('tools', sa.JSON(), nullable=True, comment='提供的工具列表'),
+    sa.Column('enabled', sa.Boolean(), nullable=True, comment='是否启用'),
+    sa.Column('status', sa.String(length=50), nullable=True, comment='状态：active/inactive/error'),
+    sa.Column('last_error', sa.Text(), nullable=True, comment='最后错误信息'),
+    sa.Column('last_test_at', sa.DateTime(), nullable=True, comment='最后测试时间'),
+    sa.Column('category', sa.String(length=100), nullable=True, comment='分类'),
+    sa.Column('sort_order', sa.Integer(), nullable=True, comment='排序顺序'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('mcp_plugins', schema=None) as batch_op:
+        batch_op.create_index('idx_user_enabled', ['user_id', 'enabled'], unique=False)
+        batch_op.create_index('idx_user_plugin', ['user_id', 'plugin_name'], unique=True)
+        batch_op.create_index(batch_op.f('ix_mcp_plugins_user_id'), ['user_id'], unique=False)
+
+    op.create_table('projects',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('user_id', sa.String(length=100), nullable=False, comment='用户ID'),
+    sa.Column('title', sa.String(length=200), nullable=False, comment='项目标题'),
+    sa.Column('description', sa.Text(), nullable=True, comment='项目简介'),
+    sa.Column('theme', sa.Text(), nullable=True, comment='主题'),
+    sa.Column('genre', sa.String(length=50), nullable=True, comment='小说类型'),
+    sa.Column('target_words', sa.Integer(), nullable=True, comment='目标字数'),
+    sa.Column('current_words', sa.Integer(), nullable=True, comment='当前字数'),
+    sa.Column('status', sa.String(length=20), nullable=True, comment='创作状态'),
+    sa.Column('wizard_status', sa.String(length=20), nullable=True, comment='向导完成状态: incomplete/completed'),
+    sa.Column('wizard_step', sa.Integer(), nullable=True, comment='向导当前步骤: 0-4'),
+    sa.Column('outline_mode', sa.String(length=20), nullable=False, comment='大纲章节模式: one-to-one(传统模式) 或 one-to-many(细化模式)'),
+    sa.Column('world_time_period', sa.Text(), nullable=True, comment='时间背景'),
+    sa.Column('world_location', sa.Text(), nullable=True, comment='地理位置'),
+    sa.Column('world_atmosphere', sa.Text(), nullable=True, comment='氛围基调'),
+    sa.Column('world_rules', sa.Text(), nullable=True, comment='世界规则'),
+    sa.Column('chapter_count', sa.Integer(), nullable=True, comment='章节数量'),
+    sa.Column('narrative_perspective', sa.String(length=50), nullable=True, comment='叙事视角：first_person/third_person/omniscient'),
+    sa.Column('character_count', sa.Integer(), nullable=True, comment='角色数量'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.CheckConstraint("outline_mode IN ('one-to-one', 'one-to-many')", name='check_outline_mode'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('projects', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_projects_user_id'), ['user_id'], unique=False)
+
+    op.create_table('prompt_templates',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('user_id', sa.String(length=50), nullable=False, comment='用户ID'),
+    sa.Column('template_key', sa.String(length=100), nullable=False, comment='模板键名'),
+    sa.Column('template_name', sa.String(length=200), nullable=False, comment='模板显示名称'),
+    sa.Column('template_content', sa.Text(), nullable=False, comment='模板内容'),
+    sa.Column('description', sa.Text(), nullable=True, comment='模板描述'),
+    sa.Column('category', sa.String(length=50), nullable=True, comment='模板分类'),
+    sa.Column('parameters', sa.Text(), nullable=True, comment='模板参数定义(JSON)'),
+    sa.Column('is_active', sa.Boolean(), nullable=True, comment='是否启用'),
+    sa.Column('is_system_default', sa.Boolean(), nullable=True, comment='是否为系统默认模板'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('prompt_templates', schema=None) as batch_op:
+        batch_op.create_index('idx_user_template', ['user_id', 'template_key'], unique=True)
+        batch_op.create_index(batch_op.f('ix_prompt_templates_user_id'), ['user_id'], unique=False)
+
+    op.create_table('relationship_types',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('name', sa.String(length=50), nullable=False, comment='关系名称'),
+    sa.Column('category', sa.String(length=20), nullable=False, comment='分类：family/social/hostile/professional'),
+    sa.Column('reverse_name', sa.String(length=50), nullable=True, comment='反向关系名称'),
+    sa.Column('intimacy_range', sa.String(length=20), nullable=True, comment='亲密度范围：high/medium/low'),
+    sa.Column('icon', sa.String(length=50), nullable=True, comment='图标标识'),
+    sa.Column('description', sa.Text(), nullable=True, comment='关系描述'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('relationship_types', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_relationship_types_id'), ['id'], unique=False)
+
+    op.create_table('settings',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('user_id', sa.String(length=50), nullable=False, comment='用户ID'),
+    sa.Column('api_provider', sa.String(length=50), nullable=True, comment='API提供商'),
+    sa.Column('api_key', sa.String(length=500), nullable=True, comment='API密钥'),
+    sa.Column('api_base_url', sa.String(length=500), nullable=True, comment='自定义API地址'),
+    sa.Column('llm_model', sa.String(length=100), nullable=True, comment='模型名称'),
+    sa.Column('temperature', sa.Float(), nullable=True, comment='温度参数'),
+    sa.Column('max_tokens', sa.Integer(), nullable=True, comment='最大token数'),
+    sa.Column('preferences', sa.Text(), nullable=True, comment='其他偏好设置(JSON)'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('settings', schema=None) as batch_op:
+        batch_op.create_index('idx_user_id', ['user_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_settings_user_id'), ['user_id'], unique=True)
+
+    op.create_table('user_passwords',
+    sa.Column('user_id', sa.String(length=100), nullable=False, comment='用户ID'),
+    sa.Column('username', sa.String(length=100), nullable=False, comment='用户名'),
+    sa.Column('password_hash', sa.String(length=64), nullable=False, comment='密码哈希（SHA256）'),
+    sa.Column('has_custom_password', sa.Boolean(), nullable=True, comment='是否为自定义密码'),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.PrimaryKeyConstraint('user_id')
+    )
+    with op.batch_alter_table('user_passwords', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_user_passwords_user_id'), ['user_id'], unique=False)
+
+    op.create_table('users',
+    sa.Column('user_id', sa.String(length=100), nullable=False, comment='用户ID，格式：linuxdo_{id} 或 local_{id}'),
+    sa.Column('username', sa.String(length=100), nullable=False, comment='用户名'),
+    sa.Column('display_name', sa.String(length=200), nullable=False, comment='显示名称'),
+    sa.Column('avatar_url', sa.String(length=500), nullable=True, comment='头像URL'),
+    sa.Column('trust_level', sa.Integer(), nullable=True, comment='信任等级（仅用于显示）'),
+    sa.Column('is_admin', sa.Boolean(), nullable=True, comment='是否为管理员'),
+    sa.Column('linuxdo_id', sa.String(length=100), nullable=False, comment='LinuxDO用户ID或本地用户ID'),
+    sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('last_login', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='最后登录时间'),
+    sa.PrimaryKeyConstraint('user_id')
+    )
+    with op.batch_alter_table('users', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_users_linuxdo_id'), ['linuxdo_id'], unique=True)
+        batch_op.create_index(batch_op.f('ix_users_user_id'), ['user_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_users_username'), ['username'], unique=False)
+
+    op.create_table('careers',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('project_id', sa.String(length=36), nullable=False),
+    sa.Column('name', sa.String(length=100), nullable=False, comment='职业名称'),
+    sa.Column('type', sa.String(length=20), nullable=False, comment='职业类型: main(主职业)/sub(副职业)'),
+    sa.Column('description', sa.Text(), nullable=True, comment='职业描述'),
+    sa.Column('category', sa.String(length=50), nullable=True, comment='职业分类（如：战斗系、生产系、辅助系）'),
+    sa.Column('stages', sa.Text(), nullable=False, comment="职业阶段列表(JSON): [{level:1, name:'', description:''}, ...]"),
+    sa.Column('max_stage', sa.Integer(), nullable=False, comment='最大阶段数'),
+    sa.Column('requirements', sa.Text(), nullable=True, comment='职业要求/限制'),
+    sa.Column('special_abilities', sa.Text(), nullable=True, comment='特殊能力描述'),
+    sa.Column('worldview_rules', sa.Text(), nullable=True, comment='世界观规则关联'),
+    sa.Column('attribute_bonuses', sa.Text(), nullable=True, comment="属性加成(JSON): {strength: '+10%', intelligence: '+5%'}"),
+    sa.Column('source', sa.String(length=20), nullable=True, comment='来源: ai/manual'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('careers', schema=None) as batch_op:
+        batch_op.create_index('idx_project_id', ['project_id'], unique=False)
+        batch_op.create_index('idx_type', ['type'], unique=False)
+
+    op.create_table('outlines',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('project_id', sa.String(length=36), nullable=False),
+    sa.Column('title', sa.String(length=200), nullable=False, comment='大纲标题'),
+    sa.Column('content', sa.Text(), nullable=True, comment='大纲内容'),
+    sa.Column('structure', sa.Text(), nullable=True, comment='结构化大纲数据(JSON)'),
+    sa.Column('order_index', sa.Integer(), nullable=True, comment='排序序号'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('writing_styles',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('user_id', sa.String(length=255), nullable=True, comment='所属用户ID（NULL表示全局预设风格）'),
+    sa.Column('name', sa.String(length=100), nullable=False, comment='风格名称'),
+    sa.Column('style_type', sa.String(length=50), nullable=False, comment='风格类型：preset/custom'),
+    sa.Column('preset_id', sa.String(length=50), nullable=True, comment='预设风格ID：natural/classical/modern等'),
+    sa.Column('description', sa.Text(), nullable=True, comment='风格描述'),
+    sa.Column('prompt_content', sa.Text(), nullable=False, comment='风格提示词内容'),
+    sa.Column('order_index', sa.Integer(), nullable=True, comment='排序序号'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['user_id'], ['users.user_id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('chapters',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('project_id', sa.String(length=36), nullable=False),
+    sa.Column('chapter_number', sa.Integer(), nullable=False, comment='章节序号'),
+    sa.Column('title', sa.String(length=200), nullable=False, comment='章节标题'),
+    sa.Column('content', sa.Text(), nullable=True, comment='章节内容'),
+    sa.Column('summary', sa.Text(), nullable=True, comment='章节摘要'),
+    sa.Column('word_count', sa.Integer(), nullable=True, comment='字数统计'),
+    sa.Column('status', sa.String(length=20), nullable=True, comment='章节状态'),
+    sa.Column('outline_id', sa.String(length=36), nullable=True, comment='关联的大纲ID'),
+    sa.Column('sub_index', sa.Integer(), nullable=True, comment='大纲下的子章节序号'),
+    sa.Column('expansion_plan', sa.Text(), nullable=True, comment='展开规划详情(JSON): 包含key_events, character_focus, emotional_tone等'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['outline_id'], ['outlines.id'], ondelete='SET NULL'),
+    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('characters',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('project_id', sa.String(length=36), nullable=False),
+    sa.Column('name', sa.String(length=100), nullable=False, comment='角色/组织名称'),
+    sa.Column('age', sa.String(length=50), nullable=True, comment='年龄'),
+    sa.Column('gender', sa.String(length=50), nullable=True, comment='性别'),
+    sa.Column('is_organization', sa.Boolean(), nullable=True, comment='是否为组织'),
+    sa.Column('role_type', sa.String(length=50), nullable=True, comment='角色类型'),
+    sa.Column('personality', sa.Text(), nullable=True, comment='性格特点/组织特性'),
+    sa.Column('background', sa.Text(), nullable=True, comment='背景故事'),
+    sa.Column('appearance', sa.Text(), nullable=True, comment='外貌描述'),
+    sa.Column('relationships', sa.Text(), nullable=True, comment='人物关系(JSON)'),
+    sa.Column('organization_type', sa.String(length=100), nullable=True, comment='组织类型'),
+    sa.Column('organization_purpose', sa.String(length=500), nullable=True, comment='组织目的'),
+    sa.Column('organization_members', sa.Text(), nullable=True, comment='组织成员(JSON)'),
+    sa.Column('main_career_id', sa.String(length=36), nullable=True, comment='主职业ID'),
+    sa.Column('main_career_stage', sa.Integer(), nullable=True, comment='主职业当前阶段'),
+    sa.Column('sub_careers', sa.Text(), nullable=True, comment='副职业列表(JSON): [{"career_id": "xxx", "stage": 3}, ...]'),
+    sa.Column('avatar_url', sa.String(length=500), nullable=True, comment='头像URL'),
+    sa.Column('traits', sa.Text(), nullable=True, comment='特征标签(JSON)'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['main_career_id'], ['careers.id'], ondelete='SET NULL'),
+    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('project_default_styles',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('project_id', sa.String(length=36), nullable=False, comment='项目ID'),
+    sa.Column('style_id', sa.Integer(), nullable=False, comment='风格ID'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['style_id'], ['writing_styles.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('project_id', name='uix_project_default_style')
+    )
+    op.create_table('analysis_tasks',
+    sa.Column('id', sa.String(length=36), nullable=False, comment='任务ID'),
+    sa.Column('chapter_id', sa.String(length=36), nullable=False, comment='章节ID'),
+    sa.Column('user_id', sa.String(length=50), nullable=False, comment='用户ID'),
+    sa.Column('project_id', sa.String(length=36), nullable=False, comment='项目ID'),
+    sa.Column('status', sa.String(length=20), nullable=False, comment='任务状态: pending/running/completed/failed'),
+    sa.Column('progress', sa.Integer(), nullable=True, comment='进度 0-100'),
+    sa.Column('error_message', sa.Text(), nullable=True, comment='错误信息'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('started_at', sa.DateTime(), nullable=True, comment='开始执行时间'),
+    sa.Column('completed_at', sa.DateTime(), nullable=True, comment='完成时间'),
+    sa.ForeignKeyConstraint(['chapter_id'], ['chapters.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('analysis_tasks', schema=None) as batch_op:
+        batch_op.create_index('idx_chapter_id_created', ['chapter_id', 'created_at'], unique=False)
+        batch_op.create_index('idx_status', ['status'], unique=False)
+
+    op.create_table('character_careers',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('character_id', sa.String(length=36), nullable=False),
+    sa.Column('career_id', sa.String(length=36), nullable=False),
+    sa.Column('career_type', sa.String(length=20), nullable=False, comment='main(主职业)/sub(副职业)'),
+    sa.Column('current_stage', sa.Integer(), nullable=False, comment='当前阶段（对应职业中的数值）'),
+    sa.Column('stage_progress', sa.Integer(), nullable=True, comment='阶段内进度（0-100）'),
+    sa.Column('started_at', sa.String(length=100), nullable=True, comment='开始修炼时间（小说时间线）'),
+    sa.Column('reached_current_stage_at', sa.String(length=100), nullable=True, comment='到达当前阶段时间'),
+    sa.Column('notes', sa.Text(), nullable=True, comment='备注（如：修炼心得、特殊事件）'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['career_id'], ['careers.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['character_id'], ['characters.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('character_careers', schema=None) as batch_op:
+        batch_op.create_index('idx_career_type', ['career_type'], unique=False)
+        batch_op.create_index('idx_character_career', ['character_id', 'career_id'], unique=True)
+        batch_op.create_index('idx_character_id', ['character_id'], unique=False)
+
+    op.create_table('character_relationships',
+    sa.Column('id', sa.String(length=36), nullable=False, comment='关系ID'),
+    sa.Column('project_id', sa.String(length=36), nullable=False, comment='项目ID'),
+    sa.Column('character_from_id', sa.String(length=36), nullable=False, comment='角色A的ID'),
+    sa.Column('character_to_id', sa.String(length=36), nullable=False, comment='角色B的ID'),
+    sa.Column('relationship_type_id', sa.Integer(), nullable=True, comment='关系类型ID'),
+    sa.Column('relationship_name', sa.String(length=100), nullable=True, comment='自定义关系名称'),
+    sa.Column('intimacy_level', sa.Integer(), nullable=True, comment='亲密度：-100到100'),
+    sa.Column('status', sa.String(length=20), nullable=True, comment='状态：active/broken/past/complicated'),
+    sa.Column('description', sa.Text(), nullable=True, comment='关系详细描述'),
+    sa.Column('started_at', sa.String(length=100), nullable=True, comment='关系开始时间（故事时间）'),
+    sa.Column('ended_at', sa.String(length=100), nullable=True, comment='关系结束时间（故事时间）'),
+    sa.Column('source', sa.String(length=20), nullable=True, comment='来源：ai/manual/imported'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['character_from_id'], ['characters.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['character_to_id'], ['characters.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['relationship_type_id'], ['relationship_types.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('character_relationships', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_character_relationships_character_from_id'), ['character_from_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_character_relationships_character_to_id'), ['character_to_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_character_relationships_project_id'), ['project_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_character_relationships_relationship_type_id'), ['relationship_type_id'], unique=False)
+
+    op.create_table('generation_history',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('project_id', sa.String(length=36), nullable=False),
+    sa.Column('chapter_id', sa.String(length=36), nullable=True),
+    sa.Column('prompt', sa.Text(), nullable=True, comment='使用的提示词'),
+    sa.Column('generated_content', sa.Text(), nullable=True, comment='生成的内容'),
+    sa.Column('model', sa.String(length=50), nullable=True, comment='使用的模型'),
+    sa.Column('tokens_used', sa.Integer(), nullable=True, comment='消耗的token数'),
+    sa.Column('generation_time', sa.Float(), nullable=True, comment='生成耗时(秒)'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.ForeignKeyConstraint(['chapter_id'], ['chapters.id'], ondelete='SET NULL'),
+    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('organizations',
+    sa.Column('id', sa.String(length=36), nullable=False, comment='组织ID'),
+    sa.Column('character_id', sa.String(length=36), nullable=False, comment='关联的角色ID'),
+    sa.Column('project_id', sa.String(length=36), nullable=False, comment='项目ID'),
+    sa.Column('parent_org_id', sa.String(length=36), nullable=True, comment='父组织ID'),
+    sa.Column('level', sa.Integer(), nullable=True, comment='组织层级'),
+    sa.Column('power_level', sa.Integer(), nullable=True, comment='势力等级：0-100'),
+    sa.Column('member_count', sa.Integer(), nullable=True, comment='成员数量'),
+    sa.Column('location', sa.Text(), nullable=True, comment='所在地'),
+    sa.Column('motto', sa.String(length=200), nullable=True, comment='宗旨/口号'),
+    sa.Column('color', sa.String(length=100), nullable=True, comment='代表颜色'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['character_id'], ['characters.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['parent_org_id'], ['organizations.id'], ondelete='SET NULL'),
+    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('character_id')
+    )
+    with op.batch_alter_table('organizations', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_organizations_project_id'), ['project_id'], unique=False)
+
+    op.create_table('plot_analysis',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('project_id', sa.String(length=36), nullable=False),
+    sa.Column('chapter_id', sa.String(length=36), nullable=False),
+    sa.Column('plot_stage', sa.String(length=50), nullable=True, comment='剧情阶段: 开端/发展/高潮/结局/过渡'),
+    sa.Column('conflict_level', sa.Integer(), nullable=True, comment='冲突强度 1-10'),
+    sa.Column('conflict_types', sa.JSON(), nullable=True, comment="冲突类型列表: ['人与人', '人与己', '人与环境']"),
+    sa.Column('emotional_tone', sa.String(length=100), nullable=True, comment='主导情感: 紧张/温馨/悲伤/激昂/平静'),
+    sa.Column('emotional_intensity', sa.Float(), nullable=True, comment='情感强度 0.0-1.0'),
+    sa.Column('emotional_curve', sa.JSON(), nullable=True, comment='情感曲线: {start: 0.3, middle: 0.7, end: 0.5}'),
+    sa.Column('hooks', sa.JSON(), nullable=True, comment='钩子列表 - 吸引读者的元素: [\n        {\n            "type": "悬念|情感|冲突|认知",\n            "content": "具体内容",\n            "strength": 8,\n            "position": "开头|中段|结尾"\n        }\n    ]'),
+    sa.Column('hooks_count', sa.Integer(), nullable=True, comment='钩子数量'),
+    sa.Column('hooks_avg_strength', sa.Float(), nullable=True, comment='钩子平均强度'),
+    sa.Column('foreshadows', sa.JSON(), nullable=True, comment='伏笔列表: [\n        {\n            "content": "伏笔内容",\n            "type": "planted|resolved",\n            "strength": 7,\n            "subtlety": 8,\n            "reference_chapter": 3\n        }\n    ]'),
+    sa.Column('foreshadows_planted', sa.Integer(), nullable=True, comment='本章埋下的伏笔数量'),
+    sa.Column('foreshadows_resolved', sa.Integer(), nullable=True, comment='本章回收的伏笔数量'),
+    sa.Column('plot_points', sa.JSON(), nullable=True, comment='情节点列表: [\n        {\n            "content": "情节点描述",\n            "importance": 0.9,\n            "type": "revelation|conflict|resolution|transition",\n            "impact": "对故事的影响描述"\n        }\n    ]'),
+    sa.Column('plot_points_count', sa.Integer(), nullable=True, comment='情节点数量'),
+    sa.Column('character_states', sa.JSON(), nullable=True, comment='角色状态变化: [\n        {\n            "character_id": "xxx",\n            "character_name": "张三",\n            "state_before": "犹豫不决",\n            "state_after": "坚定信念",\n            "psychological_change": "内心描述",\n            "key_event": "触发事件",\n            "relationship_changes": {"李四": "关系变化"}\n        }\n    ]'),
+    sa.Column('scenes', sa.JSON(), nullable=True, comment="场景列表: [{location: '地点', atmosphere: '氛围', duration: '时长'}]"),
+    sa.Column('pacing', sa.String(length=50), nullable=True, comment='节奏: slow|moderate|fast|varied'),
+    sa.Column('overall_quality_score', sa.Float(), nullable=True, comment='整体质量评分 0.0-10.0'),
+    sa.Column('pacing_score', sa.Float(), nullable=True, comment='节奏评分 0.0-10.0'),
+    sa.Column('engagement_score', sa.Float(), nullable=True, comment='吸引力评分 0.0-10.0'),
+    sa.Column('coherence_score', sa.Float(), nullable=True, comment='连贯性评分 0.0-10.0'),
+    sa.Column('analysis_report', sa.Text(), nullable=True, comment='完整的文字分析报告'),
+    sa.Column('suggestions', sa.JSON(), nullable=True, comment="改进建议列表: ['建议1', '建议2']"),
+    sa.Column('word_count', sa.Integer(), nullable=True, comment='章节字数'),
+    sa.Column('dialogue_ratio', sa.Float(), nullable=True, comment='对话占比 0.0-1.0'),
+    sa.Column('description_ratio', sa.Float(), nullable=True, comment='描写占比 0.0-1.0'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='分析时间'),
+    sa.ForeignKeyConstraint(['chapter_id'], ['chapters.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('plot_analysis', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_plot_analysis_chapter_id'), ['chapter_id'], unique=True)
+        batch_op.create_index(batch_op.f('ix_plot_analysis_project_id'), ['project_id'], unique=False)
+
+    op.create_table('regeneration_tasks',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('chapter_id', sa.String(length=36), nullable=False),
+    sa.Column('analysis_id', sa.String(length=36), nullable=True, comment='关联的分析结果ID'),
+    sa.Column('user_id', sa.String(length=50), nullable=False),
+    sa.Column('project_id', sa.String(length=36), nullable=False),
+    sa.Column('modification_instructions', sa.Text(), nullable=False, comment='综合修改指令'),
+    sa.Column('original_suggestions', sa.JSON(), nullable=True, comment='来自分析的原始建议列表'),
+    sa.Column('selected_suggestion_indices', sa.JSON(), nullable=True, comment='用户选择的建议索引'),
+    sa.Column('custom_instructions', sa.Text(), nullable=True, comment='用户自定义修改意见'),
+    sa.Column('style_id', sa.Integer(), nullable=True, comment='写作风格ID'),
+    sa.Column('target_word_count', sa.Integer(), nullable=True, comment='目标字数'),
+    sa.Column('focus_areas', sa.JSON(), nullable=True, comment='重点优化方向'),
+    sa.Column('preserve_elements', sa.JSON(), nullable=True, comment='需要保留的元素配置'),
+    sa.Column('status', sa.String(length=20), nullable=True, comment='pending/running/completed/failed'),
+    sa.Column('progress', sa.Integer(), nullable=True, comment='进度 0-100'),
+    sa.Column('error_message', sa.Text(), nullable=True),
+    sa.Column('original_content', sa.Text(), nullable=True, comment='原始章节内容快照'),
+    sa.Column('original_word_count', sa.Integer(), nullable=True, comment='原始字数'),
+    sa.Column('regenerated_content', sa.Text(), nullable=True, comment='重新生成的内容'),
+    sa.Column('regenerated_word_count', sa.Integer(), nullable=True, comment='新内容字数'),
+    sa.Column('version_number', sa.Integer(), nullable=True, comment='版本号'),
+    sa.Column('version_note', sa.String(length=500), nullable=True, comment='版本说明'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True),
+    sa.Column('started_at', sa.DateTime(), nullable=True),
+    sa.Column('completed_at', sa.DateTime(), nullable=True),
+    sa.ForeignKeyConstraint(['chapter_id'], ['chapters.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('regeneration_tasks', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_regeneration_tasks_chapter_id'), ['chapter_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_regeneration_tasks_project_id'), ['project_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_regeneration_tasks_user_id'), ['user_id'], unique=False)
+
+    op.create_table('story_memories',
+    sa.Column('id', sa.String(length=100), nullable=False),
+    sa.Column('project_id', sa.String(length=36), nullable=False),
+    sa.Column('chapter_id', sa.String(length=36), nullable=True),
+    sa.Column('memory_type', sa.String(length=50), nullable=False, comment='\n    记忆类型:\n    - plot_point: 情节点\n    - character_event: 角色事件\n    - world_detail: 世界观细节\n    - hook: 钩子(悬念/冲突)\n    - foreshadow: 伏笔\n    - dialogue: 重要对话\n    - scene: 场景描写\n    '),
+    sa.Column('title', sa.String(length=200), nullable=True, comment='记忆标题/简述'),
+    sa.Column('content', sa.Text(), nullable=False, comment='记忆内容摘要(100-500字)'),
+    sa.Column('full_context', sa.Text(), nullable=True, comment='完整上下文(可选,用于详细记录)'),
+    sa.Column('related_characters', sa.JSON(), nullable=True, comment="涉及角色ID列表: ['char_id_1', 'char_id_2']"),
+    sa.Column('related_locations', sa.JSON(), nullable=True, comment="涉及地点列表: ['地点1', '地点2']"),
+    sa.Column('tags', sa.JSON(), nullable=True, comment="标签列表: ['悬念', '转折', '伏笔', '高潮']"),
+    sa.Column('importance_score', sa.Float(), nullable=True, comment='重要性评分 0.0-1.0'),
+    sa.Column('story_timeline', sa.Integer(), nullable=False, comment='故事时间线位置(章节序号)'),
+    sa.Column('chapter_position', sa.Integer(), nullable=True, comment='章节内位置(字符位置)'),
+    sa.Column('text_length', sa.Integer(), nullable=True, comment='文本长度(字符数)'),
+    sa.Column('is_foreshadow', sa.Integer(), nullable=True, comment='伏笔状态: 0=普通记忆, 1=已埋下伏笔, 2=伏笔已回收'),
+    sa.Column('foreshadow_resolved_at', sa.String(length=100), nullable=True, comment='伏笔回收的章节ID'),
+    sa.Column('foreshadow_strength', sa.Float(), nullable=True, comment='伏笔强度 0.0-1.0'),
+    sa.Column('vector_id', sa.String(length=100), nullable=True, comment='向量数据库中的唯一ID'),
+    sa.Column('embedding_model', sa.String(length=100), nullable=True, comment='使用的embedding模型'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['chapter_id'], ['chapters.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['foreshadow_resolved_at'], ['chapters.id'], ondelete='SET NULL'),
+    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('vector_id')
+    )
+    with op.batch_alter_table('story_memories', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_story_memories_chapter_id'), ['chapter_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_story_memories_memory_type'), ['memory_type'], unique=False)
+        batch_op.create_index(batch_op.f('ix_story_memories_project_id'), ['project_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_story_memories_story_timeline'), ['story_timeline'], unique=False)
+
+    op.create_table('organization_members',
+    sa.Column('id', sa.String(length=36), nullable=False, comment='成员关系ID'),
+    sa.Column('organization_id', sa.String(length=36), nullable=False, comment='组织ID'),
+    sa.Column('character_id', sa.String(length=36), nullable=False, comment='角色ID'),
+    sa.Column('position', sa.String(length=100), nullable=False, comment='职位名称'),
+    sa.Column('rank', sa.Integer(), nullable=True, comment='职位等级'),
+    sa.Column('status', sa.String(length=20), nullable=True, comment='状态：active/retired/expelled/deceased'),
+    sa.Column('joined_at', sa.String(length=100), nullable=True, comment='加入时间（故事时间）'),
+    sa.Column('left_at', sa.String(length=100), nullable=True, comment='离开时间（故事时间）'),
+    sa.Column('loyalty', sa.Integer(), nullable=True, comment='忠诚度：0-100'),
+    sa.Column('contribution', sa.Integer(), nullable=True, comment='贡献度：0-100'),
+    sa.Column('source', sa.String(length=20), nullable=True, comment='来源：ai/manual'),
+    sa.Column('notes', sa.Text(), nullable=True, comment='备注'),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='创建时间'),
+    sa.Column('updated_at', sa.DateTime(), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=True, comment='更新时间'),
+    sa.ForeignKeyConstraint(['character_id'], ['characters.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['organization_id'], ['organizations.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('organization_members', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_organization_members_character_id'), ['character_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_organization_members_organization_id'), ['organization_id'], unique=False)
+
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('organization_members', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_organization_members_organization_id'))
+        batch_op.drop_index(batch_op.f('ix_organization_members_character_id'))
+
+    op.drop_table('organization_members')
+    with op.batch_alter_table('story_memories', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_story_memories_story_timeline'))
+        batch_op.drop_index(batch_op.f('ix_story_memories_project_id'))
+        batch_op.drop_index(batch_op.f('ix_story_memories_memory_type'))
+        batch_op.drop_index(batch_op.f('ix_story_memories_chapter_id'))
+
+    op.drop_table('story_memories')
+    with op.batch_alter_table('regeneration_tasks', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_regeneration_tasks_user_id'))
+        batch_op.drop_index(batch_op.f('ix_regeneration_tasks_project_id'))
+        batch_op.drop_index(batch_op.f('ix_regeneration_tasks_chapter_id'))
+
+    op.drop_table('regeneration_tasks')
+    with op.batch_alter_table('plot_analysis', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_plot_analysis_project_id'))
+        batch_op.drop_index(batch_op.f('ix_plot_analysis_chapter_id'))
+
+    op.drop_table('plot_analysis')
+    with op.batch_alter_table('organizations', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_organizations_project_id'))
+
+    op.drop_table('organizations')
+    op.drop_table('generation_history')
+    with op.batch_alter_table('character_relationships', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_character_relationships_relationship_type_id'))
+        batch_op.drop_index(batch_op.f('ix_character_relationships_project_id'))
+        batch_op.drop_index(batch_op.f('ix_character_relationships_character_to_id'))
+        batch_op.drop_index(batch_op.f('ix_character_relationships_character_from_id'))
+
+    op.drop_table('character_relationships')
+    with op.batch_alter_table('character_careers', schema=None) as batch_op:
+        batch_op.drop_index('idx_character_id')
+        batch_op.drop_index('idx_character_career')
+        batch_op.drop_index('idx_career_type')
+
+    op.drop_table('character_careers')
+    with op.batch_alter_table('analysis_tasks', schema=None) as batch_op:
+        batch_op.drop_index('idx_status')
+        batch_op.drop_index('idx_chapter_id_created')
+
+    op.drop_table('analysis_tasks')
+    op.drop_table('project_default_styles')
+    op.drop_table('characters')
+    op.drop_table('chapters')
+    op.drop_table('writing_styles')
+    op.drop_table('outlines')
+    with op.batch_alter_table('careers', schema=None) as batch_op:
+        batch_op.drop_index('idx_type')
+        batch_op.drop_index('idx_project_id')
+
+    op.drop_table('careers')
+    with op.batch_alter_table('users', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_users_username'))
+        batch_op.drop_index(batch_op.f('ix_users_user_id'))
+        batch_op.drop_index(batch_op.f('ix_users_linuxdo_id'))
+
+    op.drop_table('users')
+    with op.batch_alter_table('user_passwords', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_user_passwords_user_id'))
+
+    op.drop_table('user_passwords')
+    with op.batch_alter_table('settings', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_settings_user_id'))
+        batch_op.drop_index('idx_user_id')
+
+    op.drop_table('settings')
+    with op.batch_alter_table('relationship_types', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_relationship_types_id'))
+
+    op.drop_table('relationship_types')
+    with op.batch_alter_table('prompt_templates', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_prompt_templates_user_id'))
+        batch_op.drop_index('idx_user_template')
+
+    op.drop_table('prompt_templates')
+    with op.batch_alter_table('projects', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_projects_user_id'))
+
+    op.drop_table('projects')
+    with op.batch_alter_table('mcp_plugins', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_mcp_plugins_user_id'))
+        batch_op.drop_index('idx_user_plugin')
+        batch_op.drop_index('idx_user_enabled')
+
+    op.drop_table('mcp_plugins')
+    op.drop_table('batch_generation_tasks')
+    # ### end Alembic commands ###