Initial commit: monorepo Match Live TV.

Rails API, app Flutter, infrastruttura Docker/MediaMTX, sito marketing e documentazione di deploy.

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

backend/app/services/webhooks/signature.rb

@@ -0,0 +1,14 @@
+module Webhooks
+  class Signature
+    def self.valid?(payload, signature)
+      return false if signature.blank?
+
+      expected = OpenSSL::HMAC.hexdigest(
+        "SHA256",
+        MatchLiveTv.mediamtx_webhook_secret,
+        payload
+      )
+      ActiveSupport::SecurityUtils.secure_compare(expected, signature)
+    end
+  end
+end