feat: add feedback database model and migration

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/alembic/versions/e65b9f8fd458_add_feedback_table.py

@@ -0,0 +1,42 @@
+"""add feedback table
+
+Revision ID: e65b9f8fd458
+Revises: 0fd2a90a9c2c
+Create Date: 2026-02-18 17:39:16.939185
+
+"""
+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 = 'e65b9f8fd458'
+down_revision: Union[str, None] = '0fd2a90a9c2c'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        'feedback',
+        sa.Column('id', postgresql.UUID(as_uuid=True), primary_key=True),
+        sa.Column('account_id', postgresql.UUID(as_uuid=True), sa.ForeignKey('accounts.id', ondelete='SET NULL'), nullable=True),
+        sa.Column('user_id', postgresql.UUID(as_uuid=True), sa.ForeignKey('users.id', ondelete='SET NULL'), nullable=False),
+        sa.Column('email', sa.String(255), nullable=False),
+        sa.Column('feedback_type', sa.String(50), nullable=False),
+        sa.Column('message', sa.Text(), nullable=False),
+        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.func.now()),
+    )
+    op.create_index('ix_feedback_account_id', 'feedback', ['account_id'])
+    op.create_index('ix_feedback_user_id', 'feedback', ['user_id'])
+    op.create_index('ix_feedback_created_at', 'feedback', ['created_at'])
+
+
+def downgrade() -> None:
+    op.drop_index('ix_feedback_created_at', table_name='feedback')
+    op.drop_index('ix_feedback_user_id', table_name='feedback')
+    op.drop_index('ix_feedback_account_id', table_name='feedback')
+    op.drop_table('feedback')

backend/app/models/__init__.py

@@ -25,6 +25,7 @@ from .platform_setting import PlatformSetting
 from .user_pinned_tree import UserPinnedTree
 from .target_list import TargetList
 from .maintenance_schedule import MaintenanceSchedule
+from .feedback import Feedback
 
 __all__ = [
     "User",
@@ -61,4 +62,5 @@ __all__ = [
     "UserPinnedTree",
     "TargetList",
     "MaintenanceSchedule",
+    "Feedback",
 ]

backend/app/models/feedback.py

@@ -0,0 +1,19 @@
+import uuid
+from datetime import datetime, timezone
+from typing import Optional
+from sqlalchemy import String, Text, DateTime, ForeignKey
+from sqlalchemy.orm import Mapped, mapped_column
+from sqlalchemy.dialects.postgresql import UUID
+from app.core.database import Base
+
+
+class Feedback(Base):
+    __tablename__ = "feedback"
+
+    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    account_id: Mapped[Optional[uuid.UUID]] = mapped_column(UUID(as_uuid=True), ForeignKey("accounts.id", ondelete="SET NULL"), nullable=True)
+    user_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), nullable=False)
+    email: Mapped[str] = mapped_column(String(255), nullable=False)
+    feedback_type: Mapped[str] = mapped_column(String(50), nullable=False)
+    message: Mapped[str] = mapped_column(Text, nullable=False)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc))