Much base work started

app/models/work.rb

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+class Work < ApplicationRecord
+  # 1. Includes/Concerns
+  include Searchable
+
+  # 2. JSON Store for flexible metadata
+  store :metadata, accessors: [:tmdb_data, :imdb_data, :custom_fields]
+  store :tmdb_data, accessors: [:overview, :poster_path, :backdrop_path, :release_date, :genres]
+  store :imdb_data, accessors: [:plot, :rating, :votes, :runtime, :director]
+  store :custom_fields
+
+  # 3. Associations
+  has_many :videos, dependent: :nullify
+  has_many :external_ids, dependent: :destroy
+  has_one :primary_video, -> { order("(video_metadata->>'height')::int DESC") }, class_name: "Video"
+
+  # 4. Validations
+  validates :title, presence: true
+  validates :year, numericality: { only_integer: true, greater_than: 1800 }, allow_nil: true
+  validates :rating, numericality: { greater_than_or_equal_to: 0, less_than_or_equal_to: 10 }, allow_nil: true
+
+  # 5. Scopes
+  scope :organized, -> { where(organized: true) }
+  scope :unorganized, -> { where(organized: false) }
+  scope :recent, -> { order(created_at: :desc) }
+  scope :by_title, -> { order(:title) }
+  scope :with_year, -> { where.not(year: nil) }
+
+  # 6. Delegations
+  delegate :resolution_label, :duration, to: :primary_video, prefix: true, allow_nil: true
+
+  # 7. Class methods
+  def self.search(query)
+    where("title LIKE ? OR director LIKE ?", "%#{sanitize_sql_like(query)}%", "%#{sanitize_sql_like(query)}%")
+  end
+
+  def self.find_by_external_id(source, value)
+    joins(:external_ids).find_by(external_ids: { source: source, value: value })
+  end
+
+  # 8. Instance methods
+  def display_title
+    year ? "#{title} (#{year})" : title
+  end
+
+  def video_count
+    videos.count
+  end
+
+  def total_duration
+    videos.sum("(video_metadata->>'duration')::float")
+  end
+
+  def available_versions
+    videos.group_by(&:resolution_label)
+  end
+
+  def has_external_ids?
+    external_ids.exists?
+  end
+
+  def poster_url
+    poster_path || tmdb_data['poster_path']
+  end
+
+  def backdrop_url
+    backdrop_path || tmdb_data['backdrop_path']
+  end
+
+  def description
+    return read_attribute(:description) if read_attribute(:description).present?
+    tmdb_data['overview'] || imdb_data['plot']
+  end
+
+  def effective_director
+    return read_attribute(:director) if read_attribute(:director).present?
+    imdb_data['director']
+  end
+
+  def effective_rating
+    return read_attribute(:rating) if read_attribute(:rating).present?
+    imdb_data['rating']&.to_f
+  end
+
+  # Convenience accessors for common external IDs
+  # Auto-generated for all sources (will be implemented when we add ExternalId model logic)
+  # ExternalId.sources.keys.each do |source_name|
+  #   define_method("#{source_name}_id") do
+  #     external_ids.find_by(source: source_name)&.value
+  #   end
+  #
+  #   define_method("#{source_name}_id=") do |value|
+  #     return if value.blank?
+  #     external_ids.find_or_initialize_by(source: source_name).update!(value: value)
+  #   end
+  #
+  #   define_method("#{source_name}_url") do
+  #     external_ids.find_by(source: source_name)&.url
+  #   end
+  # end
+end