Fix HLS browser in prod e stabilizza broadcast RTMP su iOS.

Il proxy Rails gestisce il redirect MediaMTX su /live/match_* e riscrive le playlist; edge nginx reindirizza /live/ sotto /hls/. Su iOS, SessionBuilder HaishinKit, pipeline mixer corretta e refresh token.

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

backend/spec/requests/hls_proxy_spec.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe "HLS proxy", type: :request do
+  let(:mediamtx_hls) { "http://mediamtx.test:8888" }
+  let(:playlist) do
+    <<~M3U8
+      #EXTM3U
+      #EXT-X-VERSION:3
+      #EXT-X-TARGETDURATION:1
+      #EXTINF:1.0,
+      /live/match_#{session_id}/segment0.ts
+    M3U8
+  end
+  let(:session_id) { "cc7e90b2-c672-4401-b5d3-51fdcdc7a214" }
+
+  before do
+    allow(MatchLiveTv).to receive(:mediamtx_hls_url).and_return(mediamtx_hls)
+  end
+
+  describe "GET /live/match_:session_id/*" do
+    it "proxies MediaMTX redirect and rewrites playlist paths to /hls/" do
+      stub_request(:get, "#{mediamtx_hls}/live/match_#{session_id}/index.m3u8")
+        .to_return(status: 302, headers: { "Location" => "/live/match_#{session_id}/index.m3u8?cookieCheck=1" })
+      stub_request(:get, "#{mediamtx_hls}/live/match_#{session_id}/index.m3u8?cookieCheck=1")
+        .to_return(status: 200, body: playlist, headers: { "Content-Type" => "application/vnd.apple.mpegurl" })
+
+      get "/live/match_#{session_id}/index.m3u8"
+
+      expect(response).to have_http_status(:ok)
+      expect(response.body).to include("/hls/live/match_#{session_id}/segment0.ts")
+      expect(response.body).not_to include("/live/match_#{session_id}/segment0.ts")
+    end
+  end
+end