feat: 完善周期报告与用户行为分析

- 支持可配置周报月报模板与登录后异步补生成\n- 增加用户行为埋点和后台分析页面\n- 移除主题额度并保留实修回顾结算\n- 修复历史会话续聊上下文丢失

ai_knowledge_base_v2/apps/backend/alembic/versions/0036_remove_topic_quota.py

@@ -0,0 +1,65 @@
+"""remove monthly topic quota while preserving practice review data
+
+Revision ID: 0036_remove_topic_quota
+Revises: 0035_content_gen_variables
+"""
+
+import sqlalchemy as sa
+from alembic import op
+
+
+revision = "0036_remove_topic_quota"
+down_revision = "0035_content_gen_variables"
+branch_labels = None
+depends_on = None
+
+
+OLD_REVIEW_KEY = "topic_auto_settle_successful_rounds"
+NEW_REVIEW_KEY = "practice_review_auto_settle_successful_rounds"
+
+
+def _rename_config_key(old_key: str, new_key: str) -> None:
+    connection = op.get_bind()
+    old_exists = connection.execute(
+        sa.text("SELECT COUNT(*) FROM sys_system_config WHERE config_key = :key"),
+        {"key": old_key},
+    ).scalar()
+    if not old_exists:
+        return
+    new_exists = connection.execute(
+        sa.text("SELECT COUNT(*) FROM sys_system_config WHERE config_key = :key"),
+        {"key": new_key},
+    ).scalar()
+    if new_exists:
+        connection.execute(
+            sa.text("DELETE FROM sys_system_config WHERE config_key = :key"),
+            {"key": old_key},
+        )
+        return
+    connection.execute(
+        sa.text("UPDATE sys_system_config SET config_key = :new_key WHERE config_key = :old_key"),
+        {"new_key": new_key, "old_key": old_key},
+    )
+
+
+def upgrade() -> None:
+    _rename_config_key(OLD_REVIEW_KEY, NEW_REVIEW_KEY)
+    op.drop_column("sys_entitlement_plan", "deduct_quota")
+    op.drop_column("sys_entitlement_plan", "monthly_topic_limit")
+    op.drop_column("sys_topic_session", "quota_deducted")
+
+
+def downgrade() -> None:
+    op.add_column(
+        "sys_topic_session",
+        sa.Column("quota_deducted", sa.Integer(), nullable=False, server_default="0"),
+    )
+    op.add_column(
+        "sys_entitlement_plan",
+        sa.Column("monthly_topic_limit", sa.Integer(), nullable=True),
+    )
+    op.add_column(
+        "sys_entitlement_plan",
+        sa.Column("deduct_quota", sa.Integer(), nullable=False, server_default="1"),
+    )
+    _rename_config_key(NEW_REVIEW_KEY, OLD_REVIEW_KEY)

ai_knowledge_base_v2/apps/backend/alembic/versions/0037_periodic_report_sources.py

@@ -0,0 +1,38 @@
+"""track chat and weekly-report sources for configurable periodic reports
+
+Revision ID: 0037_report_sources
+Revises: 0036_remove_topic_quota
+"""
+
+import sqlalchemy as sa
+from alembic import op
+
+
+revision = "0037_report_sources"
+down_revision = "0036_remove_topic_quota"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("sys_periodic_report", sa.Column("source_message_ids", sa.Text(), nullable=True))
+    op.add_column("sys_periodic_report", sa.Column("source_report_ids", sa.Text(), nullable=True))
+    op.alter_column(
+        "sys_periodic_report",
+        "schema_version",
+        server_default="3",
+        existing_type=sa.Integer(),
+        existing_nullable=False,
+    )
+
+
+def downgrade() -> None:
+    op.alter_column(
+        "sys_periodic_report",
+        "schema_version",
+        server_default="2",
+        existing_type=sa.Integer(),
+        existing_nullable=False,
+    )
+    op.drop_column("sys_periodic_report", "source_report_ids")
+    op.drop_column("sys_periodic_report", "source_message_ids")

ai_knowledge_base_v2/apps/backend/alembic/versions/0038_user_behavior_analytics.py

@@ -0,0 +1,42 @@
+"""add user behavior analytics
+
+Revision ID: 0038_user_behavior
+Revises: 0037_report_sources
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "0038_user_behavior"
+down_revision = "0037_report_sources"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "sys_user_behavior_event",
+        sa.Column("id", sa.BigInteger(), autoincrement=True, nullable=False),
+        sa.Column("client_event_id", sa.String(length=36), nullable=False),
+        sa.Column("user_id", sa.BigInteger(), nullable=False),
+        sa.Column("event_code", sa.String(length=64), nullable=False),
+        sa.Column("event_name", sa.String(length=100), nullable=False),
+        sa.Column("event_type", sa.String(length=20), nullable=False),
+        sa.Column("target_type", sa.String(length=30), nullable=True),
+        sa.Column("target_id", sa.BigInteger(), nullable=True),
+        sa.Column("occurred_at", sa.DateTime(), nullable=False),
+        sa.Column("created_at", sa.DateTime(), server_default=sa.text("CURRENT_TIMESTAMP"), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+        sa.UniqueConstraint("client_event_id", name="uq_user_behavior_client_event"),
+    )
+    op.create_index("ix_user_behavior_occurred", "sys_user_behavior_event", ["occurred_at", "id"])
+    op.create_index("ix_user_behavior_user_occurred", "sys_user_behavior_event", ["user_id", "occurred_at", "id"])
+    op.create_index("ix_user_behavior_code_occurred", "sys_user_behavior_event", ["event_code", "occurred_at", "id"])
+
+
+def downgrade() -> None:
+    op.drop_index("ix_user_behavior_code_occurred", table_name="sys_user_behavior_event")
+    op.drop_index("ix_user_behavior_user_occurred", table_name="sys_user_behavior_event")
+    op.drop_index("ix_user_behavior_occurred", table_name="sys_user_behavior_event")
+    op.drop_table("sys_user_behavior_event")