chore: reorganize para current/, rails 8.1, testes e readme

- move app para current/ (estrutura capistrano)
- rails 7.2 → 8.1, ruby 3.2, sqlite3 2.x
- adiciona primary_key Idinformativo no model
- schema.rb completo com todas as tabelas
- testes minitest: models (Tag, Informativo, Tema) e controllers
- readme atualizado em pt-br com stack e instruções de desenvolvimento
- gitignore exclui dump.sql, *.duckdb e sqlite3

current/db/migrate/20190529154251_devise_create_admin_users.rb

@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+class DeviseCreateAdminUsers < ActiveRecord::Migration[5.2]
+  def change
+    create_table :admin_users do |t|
+      ## Database authenticatable
+      t.string :email,              null: false, default: ""
+      t.string :encrypted_password, null: false, default: ""
+
+      ## Recoverable
+      t.string   :reset_password_token
+      t.datetime :reset_password_sent_at
+
+      ## Rememberable
+      t.datetime :remember_created_at
+
+      ## Trackable
+      # t.integer  :sign_in_count, default: 0, null: false
+      # t.datetime :current_sign_in_at
+      # t.datetime :last_sign_in_at
+      # t.string   :current_sign_in_ip
+      # t.string   :last_sign_in_ip
+
+      ## Confirmable
+      # t.string   :confirmation_token
+      # t.datetime :confirmed_at
+      # t.datetime :confirmation_sent_at
+      # t.string   :unconfirmed_email # Only if using reconfirmable
+
+      ## Lockable
+      # t.integer  :failed_attempts, default: 0, null: false # Only if lock strategy is :failed_attempts
+      # t.string   :unlock_token # Only if unlock strategy is :email or :both
+      # t.datetime :locked_at
+
+
+      t.timestamps null: false
+    end
+
+    add_index :admin_users, :email,                unique: true
+    add_index :admin_users, :reset_password_token, unique: true
+    # add_index :admin_users, :confirmation_token,   unique: true
+    # add_index :admin_users, :unlock_token,         unique: true
+  end
+end

current/db/migrate/20191218191626_create_informativo_tags.rb

@@ -0,0 +1,17 @@
+class CreateInformativoTags < ActiveRecord::Migration[6.0]
+  def change
+
+    # create_table :tags do |t|
+      # t.string :nome
+      # t.string :param
+      # t.integer :count
+    # end
+    # add_index(:tags, :param)
+  
+    create_join_table :informativo, :tags do |t|
+      t.index :informativo_idinformativo
+      t.index :tag_id
+    end
+
+  end
+end