feat: add user heatmap schema and migration

Author: zcesur

lib/algora/workspace/schemas/user_heatmap.ex

@@ -0,0 +1,29 @@
+defmodule Algora.Workspace.UserHeatmap do
+  @moduledoc """
+  Schema for tracking user heatmaps.
+  """
+  use Algora.Schema
+
+  alias Algora.Accounts.User
+  alias Algora.Workspace.UserHeatmap
+
+  typed_schema "user_heatmaps" do
+    field :data, :map, null: false
+
+    belongs_to :user, User, null: false
+
+    timestamps()
+  end
+
+  @doc """
+  Changeset for creating or updating a user heatmap.
+  """
+  def changeset(%UserHeatmap{} = heatmap, attrs) do
+    heatmap
+    |> cast(attrs, [:user_id, :data])
+    |> validate_required([:user_id, :data])
+    |> generate_id()
+    |> foreign_key_constraint(:user_id)
+    |> unique_constraint(:user_id)
+  end
+end

priv/repo/migrations/20250603224913_create_user_heatmaps.exs

@@ -0,0 +1,15 @@
+defmodule Algora.Repo.Migrations.CreateUserHeatmaps do
+  use Ecto.Migration
+
+  def change do
+    create table(:user_heatmaps) do
+      add :data, :map, null: false
+
+      add :user_id, references(:users, on_delete: :delete_all), null: false
+
+      timestamps()
+    end
+
+    create unique_index(:user_heatmaps, [:user_id])
+  end
+end