feat: 全屏个股详情预览 + Tailwind 改版 + 账号鉴权

backend/alembic/env.py

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+from __future__ import annotations
+
+import asyncio
+from logging.config import fileConfig
+
+from alembic import context
+from sqlalchemy import pool
+from sqlalchemy.ext.asyncio import async_engine_from_config
+
+from app.config import settings
+from app.db import Base
+from app import models  # noqa: F401
+
+
+config = context.config
+config.set_main_option("sqlalchemy.url", settings.database_url.replace("%", "%%"))
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = Base.metadata
+
+
+def run_migrations_offline() -> None:
+    context.configure(
+        url=settings.database_url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+        compare_type=True,
+    )
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def do_run_migrations(connection) -> None:
+    context.configure(connection=connection, target_metadata=target_metadata, compare_type=True)
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_async_migrations() -> None:
+    connectable = async_engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        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:
+    asyncio.run(run_async_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: 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:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

backend/alembic/versions/20260814_01_add_auth.py

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+"""add users and database-backed auth sessions
+
+Revision ID: 20260814_01
+Revises:
+Create Date: 2026-08-14 18:00:00
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision: str = "20260814_01"
+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:
+    op.create_table(
+        "users",
+        sa.Column("id", sa.BigInteger(), autoincrement=True, nullable=False),
+        sa.Column("username", sa.String(length=64), nullable=False),
+        sa.Column("password_hash", sa.String(length=255), nullable=False),
+        sa.Column("password_algo", sa.String(length=16), nullable=False, server_default="argon2id"),
+        sa.Column("is_active", sa.Boolean(), nullable=False, server_default=sa.true()),
+        sa.Column("failed_login_count", sa.Integer(), nullable=False, server_default="0"),
+        sa.Column("locked_until", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("password_changed_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("last_login_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.PrimaryKeyConstraint("id"),
+        sa.UniqueConstraint("username", name="uq_users_username"),
+    )
+    op.create_index("ix_users_is_active", "users", ["is_active"])
+
+    op.create_table(
+        "auth_sessions",
+        sa.Column("id", sa.BigInteger(), autoincrement=True, nullable=False),
+        sa.Column("user_id", sa.BigInteger(), nullable=False),
+        sa.Column("token_hash", sa.String(length=64), nullable=False),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("expires_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("last_seen_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("revoked_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("ip_address", sa.String(length=45), nullable=True),
+        sa.Column("user_agent", sa.String(length=512), nullable=True),
+        sa.ForeignKeyConstraint(["user_id"], ["users.id"], ondelete="CASCADE"),
+        sa.PrimaryKeyConstraint("id"),
+        sa.UniqueConstraint("token_hash", name="uq_auth_sessions_token_hash"),
+    )
+    op.create_index("ix_auth_sessions_user_id", "auth_sessions", ["user_id"])
+    op.create_index("ix_auth_sessions_expires_at", "auth_sessions", ["expires_at"])
+    op.create_index("ix_auth_sessions_revoked_at", "auth_sessions", ["revoked_at"])
+
+
+def downgrade() -> None:
+    op.drop_index("ix_auth_sessions_revoked_at", table_name="auth_sessions")
+    op.drop_index("ix_auth_sessions_expires_at", table_name="auth_sessions")
+    op.drop_index("ix_auth_sessions_user_id", table_name="auth_sessions")
+    op.drop_table("auth_sessions")
+    op.drop_index("ix_users_is_active", table_name="users")
+    op.drop_table("users")

backend/alembic/versions/208b0c5d302a_temp_full_schema.py

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+"""baseline existing business tables for fresh PostgreSQL databases
+
+Revision ID: 208b0c5d302a
+Revises: 20260814_01
+Create Date: 2026-08-14 18:14:07.548098
+"""
+from typing import Sequence, Union
+
+from alembic import op
+
+from app.db import Base
+from app import models  # noqa: F401
+
+
+revision: str = '208b0c5d302a'
+down_revision: Union[str, Sequence[str], None] = '20260814_01'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    bind = op.get_bind()
+    # 线上库在引入 Alembic 前已有这些表，checkfirst 保证迁移无损；空库则完整创建。
+    for table_name in (
+        "candles",
+        "backtest_runs",
+        "stock_basic",
+        "market_daily",
+        "daily_snapshot",
+        "trade_calendar",
+    ):
+        Base.metadata.tables[table_name].create(bind=bind, checkfirst=True)
+
+
+def downgrade() -> None:
+    # 这些表可能包含迁移接管前的数据，禁止自动降级删除。
+    pass