Initial commit on Forgejo

Fresh repository history for elektrine/tarakan hosted at
https://git.elektrine.com/elektrine/tarakan.

priv/repo/migrations/20260711192216_create_ssh_keys.exs

@@ -0,0 +1,21 @@
+defmodule Tarakan.Repo.Migrations.CreateSshKeys do
+  use Ecto.Migration
+
+  def change do
+    create table(:ssh_keys) do
+      add :account_id, references(:accounts, on_delete: :delete_all), null: false
+      add :name, :string, null: false
+      add :key_type, :string, null: false
+      add :public_key, :text, null: false
+      add :fingerprint_sha256, :string, null: false
+      add :last_used_at, :utc_datetime_usec
+
+      timestamps(type: :utc_datetime_usec)
+    end
+
+    # Global uniqueness is load-bearing: SSH authentication resolves a
+    # presented key to exactly one account by fingerprint.
+    create unique_index(:ssh_keys, [:fingerprint_sha256])
+    create index(:ssh_keys, [:account_id])
+  end
+end