Club come entità principale, branding e fix infrastruttura streaming.

Introduce clubs con abbonamento, branding Active Storage e flusso registrazione società; corregge healthcheck MediaMTX (immagine distroless) e allinea dominio produzione matchlivetv.it.

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

backend/spec/services/teams/staff_assignment_spec.rb

@@ -0,0 +1,38 @@
+require "rails_helper"
+
+RSpec.describe Teams::StaffAssignment do
+  let(:club) { Club.create!(name: "Test Club", sport: "volleyball", primary_color: "#e53935", secondary_color: "#ffffff") }
+  let(:team) { club.teams.create!(name: "Test", sport: "volleyball") }
+  let(:owner) { User.create!(name: "Coach", email: "owner@test.com", password: "password123", role: "coach") }
+
+  before do
+    load Rails.root.join("db/seeds/plans.rb")
+    Billing::AssignPlan.call(club: club, plan_slug: "free")
+    ClubMembership.create!(user: owner, club: club, role: "owner")
+  end
+
+  it "assigns owner as transmission staff" do
+    membership = UserTeam.create!(user: owner, team: team, role: "member")
+    described_class.call(team: team, user: owner, staff_kind: "transmission", membership: membership)
+    expect(membership.reload.staff_kind).to eq("transmission")
+    expect(team.entitlements.staff_count_for("transmission")).to eq(1)
+  end
+
+  it "blocks same email for transmission and regia" do
+    membership = UserTeam.create!(user: owner, team: team, role: "member")
+    described_class.call(team: team, user: owner, staff_kind: "transmission", membership: membership)
+
+    expect {
+      described_class.call(team: team, user: owner, staff_kind: "regia", membership: membership)
+    }.to raise_error(Teams::StaffAssignmentError, /email diverse/i)
+  end
+
+  it "blocks invite when email already used for other staff kind" do
+    membership = UserTeam.create!(user: owner, team: team, role: "member")
+    described_class.call(team: team, user: owner, staff_kind: "transmission", membership: membership)
+
+    expect {
+      Teams::StaffEmailValidator.assert_available!(team: team, email: owner.email, staff_kind: "regia")
+    }.to raise_error(Teams::StaffAssignmentError, /già assegnata/i)
+  end
+end