bookmarks: account-synced saved locations API

backend/accounts/models.py

@@ -195,3 +195,31 @@ class PendingDigest(Base):
         # duplicating, which is what makes the form idempotent.
         UniqueConstraint("email", name="uq_pending_digest_email"),
     )
+
+
+class Bookmark(Base):
+    """A saved location, owned by a user — the "bookmarked locations" feature.
+
+    Keyed like ``Subscription`` on ``grid.snap(lat, lon)["id"]``: one bookmark per
+    (user, cell), so re-bookmarking the same cell is an upsert of the label rather
+    than a duplicate row (see ``create_bookmark`` / ``import_bookmarks`` in
+    api_accounts.py, which enforce this at the application layer too).
+    """
+    __tablename__ = "bookmark"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    user_id: Mapped[uuid.UUID] = mapped_column(
+        GUID, ForeignKey("user.id", ondelete="CASCADE"), nullable=False
+    )
+    # grid.snap(lat, lon)["id"] — the stable per-location key used across the app.
+    cell_id: Mapped[str] = mapped_column(String(40), nullable=False)
+    label: Mapped[str] = mapped_column(String(80), nullable=False)
+    lat: Mapped[float] = mapped_column(Float, nullable=False)
+    lon: Mapped[float] = mapped_column(Float, nullable=False)
+    created_at: Mapped[float] = mapped_column(Float, nullable=False, default=time.time)
+
+    __table_args__ = (
+        # One bookmark per location per user — re-bookmarking upserts the label.
+        UniqueConstraint("user_id", "cell_id", name="uq_bookmark_user_cell"),
+        Index("idx_bookmark_user", "user_id"),
+    )