diff --git a/app/filters.py b/app/filters.py
index 9386e8f..875315c 100644
--- a/app/filters.py
+++ b/app/filters.py
@@ -27,6 +27,7 @@ REASON_TRANSLATIONS = {
     'reselling': '倒卖邀请',
     'harassment': '骚扰他人',
     'scamming': '诈骗行为',
+    'no_data': '注册后无数据',
     'other': '其他 (请在描述中详述)'
 }
 
diff --git a/migrations/versions/db2662009e3d_merge_multiple_reports_for_same_user.py b/migrations/versions/db2662009e3d_merge_multiple_reports_for_same_user.py
new file mode 100644
index 0000000..9f4f950
--- /dev/null
+++ b/migrations/versions/db2662009e3d_merge_multiple_reports_for_same_user.py
@@ -0,0 +1,198 @@
+"""merge multiple reports for same user
+
+Revision ID: db2662009e3d
+Revises: 
+Create Date: 2025-11-24 22:33:03.614231
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'db2662009e3d'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('blacklist',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('username', sa.String(length=64), nullable=True),
+    sa.Column('email', sa.String(length=120), nullable=True),
+    sa.Column('normalized_email', sa.String(length=120), nullable=True),
+    sa.Column('pt_site', sa.String(length=100), nullable=True),
+    sa.Column('uid', sa.String(length=50), nullable=True),
+    sa.Column('report_ids', sa.JSON(), nullable=False),
+    sa.Column('reason_categories', sa.JSON(), nullable=False),
+    sa.Column('status', sa.String(length=16), nullable=True),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.Column('updated_at', sa.DateTime(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('blacklist', schema=None) as batch_op:
+        batch_op.create_index('idx_blacklist_email_status', ['normalized_email', 'status'], unique=False)
+        batch_op.create_index('idx_blacklist_username_status', ['username', 'status'], unique=False)
+        batch_op.create_index(batch_op.f('ix_blacklist_created_at'), ['created_at'], unique=False)
+        batch_op.create_index(batch_op.f('ix_blacklist_email'), ['email'], unique=False)
+        batch_op.create_index(batch_op.f('ix_blacklist_normalized_email'), ['normalized_email'], unique=False)
+        batch_op.create_index(batch_op.f('ix_blacklist_pt_site'), ['pt_site'], unique=False)
+        batch_op.create_index(batch_op.f('ix_blacklist_status'), ['status'], unique=False)
+        batch_op.create_index(batch_op.f('ix_blacklist_username'), ['username'], unique=False)
+
+    op.create_table('partner_sites',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('name', sa.String(length=100), nullable=False),
+    sa.Column('url', sa.String(length=255), nullable=True),
+    sa.Column('is_active', sa.Boolean(), nullable=False),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.Column('updated_at', sa.DateTime(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('partner_sites', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_partner_sites_is_active'), ['is_active'], unique=False)
+        batch_op.create_index(batch_op.f('ix_partner_sites_name'), ['name'], unique=True)
+
+    op.create_table('users',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('username', sa.String(length=64), nullable=False),
+    sa.Column('email', sa.String(length=120), nullable=False),
+    sa.Column('password_hash', sa.String(length=256), nullable=True),
+    sa.Column('role', sa.String(length=16), nullable=True),
+    sa.Column('status', sa.String(length=16), nullable=True),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.Column('updated_at', sa.DateTime(), nullable=True),
+    sa.Column('pt_site', sa.String(length=100), nullable=True),
+    sa.Column('uid', sa.String(length=50), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('users', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_users_email'), ['email'], unique=True)
+        batch_op.create_index(batch_op.f('ix_users_role'), ['role'], unique=False)
+        batch_op.create_index(batch_op.f('ix_users_status'), ['status'], unique=False)
+        batch_op.create_index(batch_op.f('ix_users_username'), ['username'], unique=True)
+
+    op.create_table('appeals',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('reason', sa.Text(), nullable=False),
+    sa.Column('status', sa.String(length=32), nullable=False),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.Column('updated_at', sa.DateTime(), nullable=True),
+    sa.Column('appealer_id', sa.Integer(), nullable=True),
+    sa.Column('blacklist_entry_id', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['appealer_id'], ['users.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['blacklist_entry_id'], ['blacklist.id'], ondelete='SET NULL'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('appeals', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_appeals_created_at'), ['created_at'], unique=False)
+        batch_op.create_index(batch_op.f('ix_appeals_status'), ['status'], unique=False)
+
+    op.create_table('reports',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('reporter_id', sa.Integer(), nullable=False),
+    sa.Column('reported_pt_site', sa.String(length=100), nullable=False),
+    sa.Column('reported_username', sa.String(length=50), nullable=True),
+    sa.Column('reported_email', sa.String(length=120), nullable=False),
+    sa.Column('reason_category', sa.String(length=16), nullable=False),
+    sa.Column('description', sa.Text(), nullable=False),
+    sa.Column('status', sa.String(length=16), nullable=True),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.Column('updated_at', sa.DateTime(), nullable=True),
+    sa.ForeignKeyConstraint(['reporter_id'], ['users.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('reports', schema=None) as batch_op:
+        batch_op.create_index('idx_report_status_created', ['status', 'created_at'], unique=False)
+        batch_op.create_index(batch_op.f('ix_reports_created_at'), ['created_at'], unique=False)
+        batch_op.create_index(batch_op.f('ix_reports_reported_email'), ['reported_email'], unique=False)
+        batch_op.create_index(batch_op.f('ix_reports_status'), ['status'], unique=False)
+
+    op.create_table('appeal_messages',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('body', sa.Text(), nullable=False),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.Column('author_id', sa.Integer(), nullable=True),
+    sa.Column('appeal_id', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['appeal_id'], ['appeals.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['author_id'], ['users.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('appeal_messages', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_appeal_messages_created_at'), ['created_at'], unique=False)
+
+    op.create_table('comments',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('body', sa.Text(), nullable=True),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.Column('author_id', sa.Integer(), nullable=True),
+    sa.Column('report_id', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['author_id'], ['users.id'], ondelete='CASCADE'),
+    sa.ForeignKeyConstraint(['report_id'], ['reports.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    with op.batch_alter_table('comments', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_comments_created_at'), ['created_at'], unique=False)
+
+    op.create_table('evidences',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('report_id', sa.Integer(), nullable=False),
+    sa.Column('file_url', sa.String(length=1024), nullable=False),
+    sa.Column('file_type', sa.String(length=16), nullable=True),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.Column('updated_at', sa.DateTime(), nullable=True),
+    sa.ForeignKeyConstraint(['report_id'], ['reports.id'], ondelete='CASCADE'),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('evidences')
+    with op.batch_alter_table('comments', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_comments_created_at'))
+
+    op.drop_table('comments')
+    with op.batch_alter_table('appeal_messages', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_appeal_messages_created_at'))
+
+    op.drop_table('appeal_messages')
+    with op.batch_alter_table('reports', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_reports_status'))
+        batch_op.drop_index(batch_op.f('ix_reports_reported_email'))
+        batch_op.drop_index(batch_op.f('ix_reports_created_at'))
+        batch_op.drop_index('idx_report_status_created')
+
+    op.drop_table('reports')
+    with op.batch_alter_table('appeals', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_appeals_status'))
+        batch_op.drop_index(batch_op.f('ix_appeals_created_at'))
+
+    op.drop_table('appeals')
+    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_status'))
+        batch_op.drop_index(batch_op.f('ix_users_role'))
+        batch_op.drop_index(batch_op.f('ix_users_email'))
+
+    op.drop_table('users')
+    with op.batch_alter_table('partner_sites', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_partner_sites_name'))
+        batch_op.drop_index(batch_op.f('ix_partner_sites_is_active'))
+
+    op.drop_table('partner_sites')
+    with op.batch_alter_table('blacklist', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_blacklist_username'))
+        batch_op.drop_index(batch_op.f('ix_blacklist_status'))
+        batch_op.drop_index(batch_op.f('ix_blacklist_pt_site'))
+        batch_op.drop_index(batch_op.f('ix_blacklist_normalized_email'))
+        batch_op.drop_index(batch_op.f('ix_blacklist_email'))
+        batch_op.drop_index(batch_op.f('ix_blacklist_created_at'))
+        batch_op.drop_index('idx_blacklist_username_status')
+        batch_op.drop_index('idx_blacklist_email_status')
+
+    op.drop_table('blacklist')
+    # ### end Alembic commands ###