feat(agent-chat): complete core workflow and strengthen auth rate limiting
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qzl
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"""create_agent_chat_core_tables
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Revision ID: 20260226_agent_chat_core
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Revises: 20260224_drop_profile
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Create Date: 2026-02-26 10:00:00.000000
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"""
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from typing import Sequence, Union
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import sqlalchemy as sa
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from alembic import op
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from sqlalchemy.dialects import postgresql
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revision: str = "20260226_agent_chat_core"
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down_revision: Union[str, Sequence[str], None] = "20260224_drop_profile"
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def upgrade() -> None:
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op.create_table(
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"llm_factory",
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sa.Column("id", postgresql.UUID(as_uuid=True), nullable=False),
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sa.Column("name", sa.String(length=50), nullable=False),
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sa.Column("request_url", sa.String(length=255), nullable=False),
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sa.Column("avatar", sa.Text(), nullable=True),
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sa.Column(
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"created_at",
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sa.DateTime(timezone=True),
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server_default=sa.text("now()"),
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nullable=False,
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),
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sa.Column(
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"updated_at",
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sa.DateTime(timezone=True),
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server_default=sa.text("now()"),
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nullable=False,
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),
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sa.Column("deleted_at", sa.DateTime(timezone=True), nullable=True),
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sa.PrimaryKeyConstraint("id", name="pk_llm_factory"),
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sa.UniqueConstraint("name", name="uq_llm_factory_name"),
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)
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op.create_index("ix_llm_factory_name", "llm_factory", ["name"])
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op.create_index("ix_llm_factory_deleted_at", "llm_factory", ["deleted_at"])
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op.create_table(
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"llms",
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sa.Column("id", postgresql.UUID(as_uuid=True), nullable=False),
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sa.Column("factory_id", postgresql.UUID(as_uuid=True), nullable=False),
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sa.Column("model_code", sa.String(length=50), nullable=False),
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sa.Column(
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"created_at",
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sa.DateTime(timezone=True),
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server_default=sa.text("now()"),
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nullable=False,
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),
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sa.Column(
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"updated_at",
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sa.DateTime(timezone=True),
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server_default=sa.text("now()"),
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nullable=False,
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),
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sa.Column("deleted_at", sa.DateTime(timezone=True), nullable=True),
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sa.ForeignKeyConstraint(
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["factory_id"], ["llm_factory.id"], ondelete="RESTRICT"
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),
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sa.PrimaryKeyConstraint("id", name="pk_llms"),
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sa.UniqueConstraint("model_code", name="uq_llms_model_code"),
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)
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op.create_index("ix_llms_factory_id", "llms", ["factory_id"])
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op.create_index("ix_llms_model_code", "llms", ["model_code"])
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op.create_index("ix_llms_deleted_at", "llms", ["deleted_at"])
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op.create_table(
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"sessions",
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sa.Column("id", postgresql.UUID(as_uuid=True), nullable=False),
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sa.Column("user_id", postgresql.UUID(as_uuid=True), nullable=False),
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sa.Column("title", sa.String(length=255), nullable=True),
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sa.Column(
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"status",
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sa.Enum(
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"pending",
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"running",
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"completed",
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"failed",
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name="agent_chat_session_status",
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native_enum=False,
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),
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nullable=False,
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server_default="pending",
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),
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sa.Column(
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"last_activity_at",
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sa.DateTime(timezone=True),
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server_default=sa.text("now()"),
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nullable=False,
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),
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sa.Column("message_count", sa.Integer(), nullable=False, server_default="0"),
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sa.Column("total_tokens", sa.Integer(), nullable=False, server_default="0"),
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sa.Column("total_cost", sa.Numeric(12, 6), nullable=False, server_default="0"),
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sa.Column(
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"created_at",
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sa.DateTime(timezone=True),
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server_default=sa.text("now()"),
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nullable=False,
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),
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sa.Column(
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"updated_at",
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sa.DateTime(timezone=True),
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server_default=sa.text("now()"),
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nullable=False,
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),
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sa.Column("deleted_at", sa.DateTime(timezone=True), nullable=True),
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sa.ForeignKeyConstraint(["user_id"], ["auth.users.id"], ondelete="CASCADE"),
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sa.PrimaryKeyConstraint("id", name="pk_sessions"),
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)
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op.create_index("ix_sessions_user_id", "sessions", ["user_id"])
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op.create_index(
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"ix_sessions_user_last_activity",
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"sessions",
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["user_id", "last_activity_at"],
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)
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op.create_index("ix_sessions_deleted_at", "sessions", ["deleted_at"])
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op.create_table(
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"messages",
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sa.Column("id", postgresql.UUID(as_uuid=True), nullable=False),
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sa.Column("session_id", postgresql.UUID(as_uuid=True), nullable=False),
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sa.Column("seq", sa.Integer(), nullable=False),
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sa.Column(
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"role",
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sa.Enum(
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"user",
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"assistant",
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"system",
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"tool",
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name="agent_chat_message_role",
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native_enum=False,
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),
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nullable=False,
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),
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sa.Column("content", sa.Text(), nullable=False),
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sa.Column("model_code", sa.String(length=50), nullable=True),
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sa.Column("tool_name", sa.String(length=100), nullable=True),
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sa.Column("input_tokens", sa.Integer(), nullable=False, server_default="0"),
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sa.Column("output_tokens", sa.Integer(), nullable=False, server_default="0"),
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sa.Column("cost", sa.Numeric(12, 6), nullable=False, server_default="0"),
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sa.Column(
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"currency", sa.String(length=3), nullable=False, server_default="USD"
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),
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sa.Column("latency_ms", sa.Integer(), nullable=True),
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sa.Column("metadata", postgresql.JSONB(astext_type=sa.Text()), nullable=True),
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sa.Column(
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"created_at",
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sa.DateTime(timezone=True),
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server_default=sa.text("now()"),
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nullable=False,
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),
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sa.Column(
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"updated_at",
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sa.DateTime(timezone=True),
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server_default=sa.text("now()"),
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nullable=False,
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),
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sa.Column("deleted_at", sa.DateTime(timezone=True), nullable=True),
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sa.ForeignKeyConstraint(["session_id"], ["sessions.id"], ondelete="CASCADE"),
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sa.PrimaryKeyConstraint("id", name="pk_messages"),
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sa.UniqueConstraint("session_id", "seq", name="uq_messages_session_seq"),
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)
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op.create_index("ix_messages_session_id", "messages", ["session_id"])
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op.create_index("ix_messages_session_role", "messages", ["session_id", "role"])
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op.create_index("ix_messages_deleted_at", "messages", ["deleted_at"])
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def downgrade() -> None:
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op.drop_index("ix_messages_deleted_at", table_name="messages")
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op.drop_index("ix_messages_session_role", table_name="messages")
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op.drop_index("ix_messages_session_id", table_name="messages")
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op.drop_table("messages")
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op.drop_index("ix_sessions_deleted_at", table_name="sessions")
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op.drop_index("ix_sessions_user_last_activity", table_name="sessions")
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op.drop_index("ix_sessions_user_id", table_name="sessions")
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op.drop_table("sessions")
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op.drop_index("ix_llms_deleted_at", table_name="llms")
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op.drop_index("ix_llms_model_code", table_name="llms")
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op.drop_index("ix_llms_factory_id", table_name="llms")
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op.drop_table("llms")
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op.drop_index("ix_llm_factory_deleted_at", table_name="llm_factory")
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op.drop_index("ix_llm_factory_name", table_name="llm_factory")
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op.drop_table("llm_factory")
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