Lunchflow integration (#259)

* First pass lunch flow

* Fixes

- Fix apikey not being saved properly due to provider no reload support
- Fix proper messages if we try to link existing accounts.

* Fix better error handling

* Filter existing transactions and skip duplicates

* FIX messaging

* Branding :)

* Fix XSS and linter

* FIX provider concern

- also fix code duplication

* FIX md5 digest

* Updated determine_sync_start_date to be account-aware

* Review fixes

* Broaden error catch to not crash UI

* Fix buttons styling

* FIX process account error handling

* FIX account cap and url parsing

* Lunch Flow brand

* Found orphan i18n strings

* Remove per conversation with @sokie

---------

Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>

db/migrate/20251029135200_create_lunchflow_items.rb

@@ -0,0 +1,23 @@
+class CreateLunchflowItems < ActiveRecord::Migration[7.2]
+  def change
+    create_table :lunchflow_items, id: :uuid do |t|
+      t.references :family, null: false, foreign_key: true, type: :uuid
+      t.string :name
+      t.string :institution_id
+      t.string :institution_name
+      t.string :institution_domain
+      t.string :institution_url
+      t.string :institution_color
+      t.string :status, default: "good"
+      t.boolean :scheduled_for_deletion, default: false
+      t.boolean :pending_account_setup, default: false
+      t.datetime :sync_start_date
+
+      t.index :status
+      t.jsonb :raw_payload
+      t.jsonb :raw_institution_payload
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20251029135300_create_lunchflow_accounts.rb

@@ -0,0 +1,21 @@
+class CreateLunchflowAccounts < ActiveRecord::Migration[7.2]
+  def change
+    create_table :lunchflow_accounts, id: :uuid do |t|
+      t.references :lunchflow_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.string :account_status
+      t.string :provider
+
+      t.index :account_id
+      t.string :account_type
+      t.jsonb :institution_metadata
+      t.jsonb :raw_payload
+      t.jsonb :raw_transactions_payload
+
+      t.timestamps
+    end
+  end
+end