Commit iniziale di eminuxCRM: CRM Rails con pipeline, campagne email e Docker.

Include autenticazione, progetti isolati, mail marketing HTML con SMTP, test A/B e editor WYSIWYG.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/models/project.rb

@@ -0,0 +1,31 @@
+class Project < ApplicationRecord
+  include Auditable
+
+  has_many :user_projects, dependent: :destroy
+  has_many :users, through: :user_projects
+  has_many :organization_projects, dependent: :destroy
+  has_many :organizations, through: :organization_projects
+  has_many :opportunities, dependent: :restrict_with_exception
+  has_many :sales_goals, dependent: :nullify
+  has_many :mail_templates, dependent: :destroy
+  has_many :mailings, dependent: :destroy
+
+  validates :name, :code, presence: true
+  validates :code, uniqueness: { case_sensitive: false },
+                   format: { with: /\A[a-z0-9_-]+\z/, message: "usa solo lettere minuscole, numeri, - e _" }
+
+  before_validation :normalize_code
+
+  scope :active, -> { where(active: true) }
+  scope :ordered, -> { order(:position, :name) }
+
+  def to_s
+    name
+  end
+
+  private
+
+  def normalize_code
+    self.code = code.to_s.strip.downcase.parameterize(separator: "_")
+  end
+end