Add SimpleFin database schema

- Create simplefin_items table for SimpleFin connections
- Create simplefin_accounts table for account metadata
- Add simplefin_account_id to accounts table for linking
- Add external_id to transactions for deduplication
- Enable encrypted storage of SimpleFin access URLs

db/migrate/20250807143728_create_simplefin_items.rb

@@ -0,0 +1,20 @@
+class CreateSimplefinItems < ActiveRecord::Migration[7.2]
+  def change
+    create_table :simplefin_items, id: :uuid do |t|
+      t.references :family, null: false, foreign_key: true, type: :uuid
+      t.text :access_url
+      t.string :name
+      t.string :institution_id
+      t.string :institution_name
+      t.string :institution_url
+      t.string :status, default: "good"
+      t.boolean :scheduled_for_deletion, default: false
+
+      t.index :status
+      t.jsonb :raw_payload
+      t.jsonb :raw_institution_payload
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20250807143819_create_simplefin_accounts.rb

@@ -0,0 +1,20 @@
+class CreateSimplefinAccounts < ActiveRecord::Migration[7.2]
+  def change
+    create_table :simplefin_accounts, id: :uuid do |t|
+      t.references :simplefin_item, null: false, foreign_key: true, type: :uuid
+      t.string :name
+      t.string :account_id
+      t.string :currency
+      t.decimal :current_balance, precision: 19, scale: 4
+      t.decimal :available_balance, precision: 19, scale: 4
+
+      t.index :account_id
+      t.string :account_type
+      t.string :account_subtype
+      t.jsonb :raw_payload
+      t.jsonb :raw_transactions_payload
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20250807144230_add_simplefin_account_id_to_accounts.rb

@@ -0,0 +1,5 @@
+class AddSimplefinAccountIdToAccounts < ActiveRecord::Migration[7.2]
+  def change
+    add_reference :accounts, :simplefin_account, null: true, foreign_key: true, type: :uuid
+  end
+end

db/migrate/20250807144857_add_external_id_to_transactions.rb

@@ -0,0 +1,6 @@
+class AddExternalIdToTransactions < ActiveRecord::Migration[7.2]
+  def change
+    add_column :transactions, :external_id, :string
+    add_index :transactions, :external_id
+  end
+end

db/schema.rb

@@ -10,7 +10,9 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.2].define(version: 2025_07_24_115507) do
+ActiveRecord::Schema[7.2].define(version: 2025_08_07_163541) do
+  create_schema "sure_dev_schema"
+
   # These are extensions that must be enabled in order to support this database
   enable_extension "pgcrypto"
   enable_extension "plpgsql"
@@ -29,12 +31,13 @@ ActiveRecord::Schema[7.2].define(version: 2025_07_24_115507) do
     t.uuid "accountable_id"
     t.decimal "balance", precision: 19, scale: 4
     t.string "currency"
-    t.virtual "classification", type: :string, as: "\nCASE\n    WHEN ((accountable_type)::text = ANY ((ARRAY['Loan'::character varying, 'CreditCard'::character varying, 'OtherLiability'::character varying])::text[])) THEN 'liability'::text\n    ELSE 'asset'::text\nEND", stored: true
+    t.virtual "classification", type: :string, as: "\nCASE\n    WHEN ((accountable_type)::text = ANY (ARRAY[('Loan'::character varying)::text, ('CreditCard'::character varying)::text, ('OtherLiability'::character varying)::text])) THEN 'liability'::text\n    ELSE 'asset'::text\nEND", stored: true
     t.uuid "import_id"
     t.uuid "plaid_account_id"
     t.decimal "cash_balance", precision: 19, scale: 4, default: "0.0"
     t.jsonb "locked_attributes", default: {}
     t.string "status", default: "active"
+    t.uuid "simplefin_account_id"
     t.index ["accountable_id", "accountable_type"], name: "index_accounts_on_accountable_id_and_accountable_type"
     t.index ["accountable_type"], name: "index_accounts_on_accountable_type"
     t.index ["currency"], name: "index_accounts_on_currency"
@@ -44,6 +47,7 @@ ActiveRecord::Schema[7.2].define(version: 2025_07_24_115507) do
     t.index ["family_id"], name: "index_accounts_on_family_id"
     t.index ["import_id"], name: "index_accounts_on_import_id"
     t.index ["plaid_account_id"], name: "index_accounts_on_plaid_account_id"
+    t.index ["simplefin_account_id"], name: "index_accounts_on_simplefin_account_id"
     t.index ["status"], name: "index_accounts_on_status"
   end
 
@@ -672,6 +676,41 @@ ActiveRecord::Schema[7.2].define(version: 2025_07_24_115507) do
     t.index ["var"], name: "index_settings_on_var", unique: true
   end
 
+  create_table "simplefin_accounts", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.uuid "simplefin_item_id", null: false
+    t.string "name"
+    t.string "account_id"
+    t.string "currency"
+    t.decimal "current_balance", precision: 19, scale: 4
+    t.decimal "available_balance", precision: 19, scale: 4
+    t.string "account_type"
+    t.string "account_subtype"
+    t.jsonb "raw_payload"
+    t.jsonb "raw_transactions_payload"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["account_id"], name: "index_simplefin_accounts_on_account_id"
+    t.index ["simplefin_item_id"], name: "index_simplefin_accounts_on_simplefin_item_id"
+  end
+
+  create_table "simplefin_items", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.uuid "family_id", null: false
+    t.text "access_url"
+    t.string "name"
+    t.string "institution_id"
+    t.string "institution_name"
+    t.string "institution_url"
+    t.string "status", default: "good"
+    t.boolean "scheduled_for_deletion", default: false
+    t.jsonb "raw_payload"
+    t.jsonb "raw_institution_payload"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.boolean "pending_account_setup", default: false, null: false
+    t.index ["family_id"], name: "index_simplefin_items_on_family_id"
+    t.index ["status"], name: "index_simplefin_items_on_status"
+  end
+
   create_table "subscriptions", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.uuid "family_id", null: false
     t.string "status", null: false
@@ -756,7 +795,9 @@ ActiveRecord::Schema[7.2].define(version: 2025_07_24_115507) do
     t.uuid "merchant_id"
     t.jsonb "locked_attributes", default: {}
     t.string "kind", default: "standard", null: false
+    t.string "external_id"
     t.index ["category_id"], name: "index_transactions_on_category_id"
+    t.index ["external_id"], name: "index_transactions_on_external_id"
     t.index ["kind"], name: "index_transactions_on_kind"
     t.index ["merchant_id"], name: "index_transactions_on_merchant_id"
   end
@@ -827,6 +868,7 @@ ActiveRecord::Schema[7.2].define(version: 2025_07_24_115507) do
   add_foreign_key "accounts", "families"
   add_foreign_key "accounts", "imports"
   add_foreign_key "accounts", "plaid_accounts"
+  add_foreign_key "accounts", "simplefin_accounts"
   add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
   add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
   add_foreign_key "api_keys", "users"
@@ -864,6 +906,8 @@ ActiveRecord::Schema[7.2].define(version: 2025_07_24_115507) do
   add_foreign_key "security_prices", "securities"
   add_foreign_key "sessions", "impersonation_sessions", column: "active_impersonator_session_id"
   add_foreign_key "sessions", "users"
+  add_foreign_key "simplefin_accounts", "simplefin_items"
+  add_foreign_key "simplefin_items", "families"
   add_foreign_key "subscriptions", "families"
   add_foreign_key "syncs", "syncs", column: "parent_id"
   add_foreign_key "taggings", "tags"