feat(backend): Phase 0 项目骨架完成 — 后端/前端/数据库/Docker

- 后端：FastAPI + SQLAlchemy + Alembic，7 张核心表迁移成功
- 前端：Next.js 16 + TailwindCSS 4 + 三端布局（投资人/创始人/Admin）
- 数据库：PostgreSQL 16，7 张核心实体表（tenants/users/companies/monthly_reports/health_scores/risk_events/audit_logs）
- Docker：docker-compose.yml + 前后端 Dockerfile
- 测试：健康检查 4 个测试全部 GREEN
- 文档：README/run.md/AGENTS.md/docs 体系完整

backend/alembic/README

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+Generic single-database configuration.

backend/alembic/env.py

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+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+from app.core.config import settings
+from app.core.database import Base
+import app.models  # noqa: F401 — 导入所有模型以便 Alembic 发现
+
+config = context.config
+
+# 使用项目配置的数据库 URL（同步驱动）
+config.set_main_option("sqlalchemy.url", settings.database_url.replace("+asyncpg", "+psycopg2"))
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = Base.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

backend/alembic/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, Sequence[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:
+    """Upgrade schema."""
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    ${downgrades if downgrades else "pass"}

backend/alembic/versions/278c8cfa6042_create_core_tables_tenants_users_.py

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+"""create core tables: tenants users companies reports health_scores risks audit_logs
+
+Revision ID: 278c8cfa6042
+Revises: 
+Create Date: 2026-07-18 21:49:38.409216
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = '278c8cfa6042'
+down_revision: Union[str, Sequence[str], None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('tenants',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('name', sa.String(length=200), nullable=False, comment='租户名称'),
+    sa.Column('type', sa.String(length=50), nullable=False, comment='租户类型：vc/cvc/gov/holdings'),
+    sa.Column('config_json', postgresql.JSONB(astext_type=sa.Text()), nullable=True, comment='租户配置'),
+    sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('companies',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('tenant_id', sa.String(length=36), nullable=False),
+    sa.Column('name', sa.String(length=200), nullable=False, comment='企业名称'),
+    sa.Column('industry', sa.String(length=100), nullable=True, comment='行业'),
+    sa.Column('stage', sa.String(length=50), nullable=True, comment='融资阶段：seed/a/b/c/ipo'),
+    sa.Column('logo_url', sa.String(length=500), nullable=True),
+    sa.Column('description', sa.Text(), nullable=True, comment='业务描述'),
+    sa.Column('founded_at', sa.DateTime(timezone=True), nullable=True),
+    sa.Column('total_funding', sa.String(length=50), nullable=True, comment='累计融资额'),
+    sa.Column('website', sa.String(length=500), nullable=True),
+    sa.Column('extra_json', postgresql.JSONB(astext_type=sa.Text()), nullable=True, comment='扩展字段'),
+    sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
+    sa.ForeignKeyConstraint(['tenant_id'], ['tenants.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_companies_tenant_id'), 'companies', ['tenant_id'], unique=False)
+    op.create_table('users',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('tenant_id', sa.String(length=36), nullable=False),
+    sa.Column('email', sa.String(length=255), nullable=False),
+    sa.Column('password_hash', sa.String(length=255), nullable=False),
+    sa.Column('name', sa.String(length=100), nullable=False),
+    sa.Column('role', sa.String(length=50), nullable=False, comment='角色：gp/partner/post_invest_lead/investor/founder/admin'),
+    sa.Column('phone', sa.String(length=20), nullable=True),
+    sa.Column('is_active', sa.Boolean(), nullable=False),
+    sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
+    sa.ForeignKeyConstraint(['tenant_id'], ['tenants.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
+    op.create_index(op.f('ix_users_tenant_id'), 'users', ['tenant_id'], unique=False)
+    op.create_table('audit_logs',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('tenant_id', sa.String(length=36), nullable=False),
+    sa.Column('user_id', sa.String(length=36), nullable=True),
+    sa.Column('action', sa.String(length=100), nullable=False, comment='操作类型：login/view/create/update/delete/export/ai_call'),
+    sa.Column('resource_type', sa.String(length=50), nullable=True, comment='资源类型'),
+    sa.Column('resource_id', sa.String(length=36), nullable=True, comment='资源 ID'),
+    sa.Column('detail_json', postgresql.JSONB(astext_type=sa.Text()), nullable=True, comment='操作详情'),
+    sa.Column('ip', postgresql.INET(), nullable=True),
+    sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
+    sa.ForeignKeyConstraint(['tenant_id'], ['tenants.id'], ),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_audit_logs_tenant_id'), 'audit_logs', ['tenant_id'], unique=False)
+    op.create_table('health_scores',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('company_id', sa.String(length=36), nullable=False),
+    sa.Column('total_score', sa.Float(), nullable=False, comment='总分（0-100）'),
+    sa.Column('financial_score', sa.Float(), nullable=True, comment='财务健康度'),
+    sa.Column('operational_score', sa.Float(), nullable=True, comment='经营健康度'),
+    sa.Column('ai_commercial_score', sa.Float(), nullable=True, comment='AI+ 商业化健康度'),
+    sa.Column('ai_cost_score', sa.Float(), nullable=True, comment='AI+ 成本健康度'),
+    sa.Column('trend', sa.String(length=20), nullable=True, comment='趋势：up/stable/down'),
+    sa.Column('evidence_json', postgresql.JSONB(astext_type=sa.Text()), nullable=True, comment='评分依据'),
+    sa.Column('recommendations_json', postgresql.JSONB(astext_type=sa.Text()), nullable=True, comment='建议动作'),
+    sa.Column('calculated_at', sa.DateTime(timezone=True), nullable=False),
+    sa.ForeignKeyConstraint(['company_id'], ['companies.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_health_scores_company_id'), 'health_scores', ['company_id'], unique=False)
+    op.create_table('monthly_reports',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('company_id', sa.String(length=36), nullable=False),
+    sa.Column('period_year', sa.Integer(), nullable=False, comment='报告年份'),
+    sa.Column('period_month', sa.Integer(), nullable=False, comment='报告月份（1-12）'),
+    sa.Column('status', sa.String(length=50), nullable=False, comment='状态：draft/submitted/ai_parsed/reviewed'),
+    sa.Column('raw_content', sa.Text(), nullable=True, comment='原始内容'),
+    sa.Column('structured_data', postgresql.JSONB(astext_type=sa.Text()), nullable=True, comment='结构化指标数据'),
+    sa.Column('ai_summary', sa.Text(), nullable=True, comment='AI 生成的摘要'),
+    sa.Column('ai_concerns', postgresql.JSONB(astext_type=sa.Text()), nullable=True, comment='AI 关注点列表'),
+    sa.Column('submitted_by', sa.String(length=36), nullable=True),
+    sa.Column('submitted_at', sa.DateTime(timezone=True), nullable=True),
+    sa.Column('reviewed_by', sa.String(length=36), nullable=True),
+    sa.Column('reviewed_at', sa.DateTime(timezone=True), nullable=True),
+    sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
+    sa.ForeignKeyConstraint(['company_id'], ['companies.id'], ),
+    sa.ForeignKeyConstraint(['reviewed_by'], ['users.id'], ),
+    sa.ForeignKeyConstraint(['submitted_by'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_monthly_reports_company_id'), 'monthly_reports', ['company_id'], unique=False)
+    op.create_table('risk_events',
+    sa.Column('id', sa.String(length=36), nullable=False),
+    sa.Column('company_id', sa.String(length=36), nullable=False),
+    sa.Column('type', sa.String(length=50), nullable=False, comment='风险类型：financial/operational/org/ai_specific'),
+    sa.Column('severity', sa.String(length=20), nullable=False, comment='严重程度：low/medium/high/critical'),
+    sa.Column('status', sa.String(length=20), nullable=False, comment='状态：open/assigned/in_progress/resolved/closed'),
+    sa.Column('title', sa.String(length=200), nullable=False),
+    sa.Column('description', sa.Text(), nullable=True),
+    sa.Column('evidence_json', postgresql.JSONB(astext_type=sa.Text()), nullable=True, comment='证据链'),
+    sa.Column('suggested_action', sa.Text(), nullable=True, comment='建议动作'),
+    sa.Column('assigned_to', sa.String(length=36), nullable=True),
+    sa.Column('due_at', sa.DateTime(timezone=True), nullable=True),
+    sa.Column('identified_at', sa.DateTime(timezone=True), nullable=False),
+    sa.Column('closed_at', sa.DateTime(timezone=True), nullable=True),
+    sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
+    sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
+    sa.ForeignKeyConstraint(['assigned_to'], ['users.id'], ),
+    sa.ForeignKeyConstraint(['company_id'], ['companies.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_risk_events_company_id'), 'risk_events', ['company_id'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_risk_events_company_id'), table_name='risk_events')
+    op.drop_table('risk_events')
+    op.drop_index(op.f('ix_monthly_reports_company_id'), table_name='monthly_reports')
+    op.drop_table('monthly_reports')
+    op.drop_index(op.f('ix_health_scores_company_id'), table_name='health_scores')
+    op.drop_table('health_scores')
+    op.drop_index(op.f('ix_audit_logs_tenant_id'), table_name='audit_logs')
+    op.drop_table('audit_logs')
+    op.drop_index(op.f('ix_users_tenant_id'), table_name='users')
+    op.drop_index(op.f('ix_users_email'), table_name='users')
+    op.drop_table('users')
+    op.drop_index(op.f('ix_companies_tenant_id'), table_name='companies')
+    op.drop_table('companies')
+    op.drop_table('tenants')
+    # ### end Alembic commands ###