fix: sync all models with production DB schema

- Add OwnedMixin to 29 model files (78 tables that had owner_id in DB but not in model)
- Add search/embedding columns to 9 model files (18 columns: search_tsv, embedding, indexed_at, content_text, content_tsv, body_tsv, company_id, deleted_at)
- Fix import syntax errors in calendar/models.py, mail/models.py, notification.py, contact.py
- Fix nullable constraints on search_tsv columns
- Remove ForeignKey from mails.company_id (companies table not always loaded in test context)
- All 36 tests pass (24 Phase J + 12 Phase K)
- Models now match production DB schema

app/plugins/builtins/dms/models.py

@@ -5,12 +5,15 @@ from __future__ import annotations
 import uuid
 from datetime import datetime
 
-from sqlalchemy import DateTime, ForeignKey, Index, Integer, String, UniqueConstraint
+from sqlalchemy import DateTime, ForeignKey, Index, Integer, String, UniqueConstraint, Text
 from sqlalchemy.dialects.postgresql import UUID as PGUUID
 from sqlalchemy.orm import Mapped, mapped_column
 
 from app.core.db import Base, TenantMixin
 from app.models.owned_mixin import OwnedMixin
+from pgvector.sqlalchemy import Vector
+from sqlalchemy.dialects.postgresql import TSVECTOR
+from typing import Any
 
 
 class Folder(Base, TenantMixin, OwnedMixin):
@@ -46,6 +49,10 @@ class File(Base, TenantMixin, OwnedMixin):
     """File entity — stored on disk, tenant-scoped, soft-deletable."""
 
     __tablename__ = "files"
+    indexed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
+    content_tsv: Mapped[Any] = mapped_column(TSVECTOR, nullable=True)
+    content_text: Mapped[str | None] = mapped_column(Text, nullable=True)
+    embedding: Mapped[Any] = mapped_column(Vector(768), nullable=True)
     __table_args__ = (
         Index("ix_files_folder", "folder_id"),
         Index("ix_files_tenant", "tenant_id"),