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/app/models/admin_user.rb

@@ -0,0 +1,10 @@
+class AdminUser < ApplicationRecord
+  # Include default devise modules. Others available are:
+  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
+  devise :database_authenticatable, 
+         :recoverable, :rememberable, :validatable
+  # Include default devise modules. Others available are:
+  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
+  devise :database_authenticatable, 
+         :recoverable, :rememberable, :validatable
+end

current/app/models/application_record.rb

@@ -0,0 +1,3 @@
+class ApplicationRecord < ActiveRecord::Base
+  self.abstract_class = true
+end

current/app/models/informativo.rb

@@ -0,0 +1,27 @@
+class Informativo < ApplicationRecord
+  self.table_name = "informativo"
+  self.primary_key = "Idinformativo"
+  has_and_belongs_to_many :tags
+
+  before_save :meta
+
+  def temas
+    Tema.where("cod_tema = #{self.tema1} or cod_tema = #{self.tema2} or cod_tema = #{self.tema3}").map(&:tema)
+  end
+
+  def as_markdown
+    html = HTMLPage.new :contents => self.Descricao
+    html.markdown
+  end
+
+	def to_html
+		Redcarpet::Markdown.new(Redcarpet::Render::HTML.new).render(self.markdown)
+	end
+
+  private
+    def meta
+      #expire_page action: "show", id: params[:list][:id]
+      self.Datainc = DateTime.now unless self.Datainc
+    end
+  
+end

current/app/models/tag.rb

@@ -0,0 +1,16 @@
+class Tag < ApplicationRecord
+  has_and_belongs_to_many :informativos
+  before_save :parameterize
+  validates :nome, uniqueness: true
+
+	def self.top
+    Tag.limit(80).order("count DESC")
+	end
+
+  private
+  def parameterize
+    self.nome.strip!
+    self.param = self.nome.parameterize
+    puts "Tag: #{self.nome}"
+  end
+end

current/app/models/tema.rb

@@ -0,0 +1,11 @@
+class Tema < ApplicationRecord
+  self.table_name = "temas"
+
+  def self.infos
+    Tema.where(cod_tema_sub: 0).where.not(padrao: "").map { |t| [t.padrao, t.count] }.sort_by { |_, c| -c }
+  end
+
+  def informativos
+    Informativo.where("tema1 = ? OR tema2 = ? OR tema3 = ?", cod_tema, cod_tema, cod_tema)
+  end
+end