Fix connessione RTMP in dev: riscrivi host Docker mediamtx per iOS.

Il simulatore non risolve «mediamtx»; l'app riscrive l'ingest verso 127.0.0.1 e docker-compose espone MEDIAMTX_RTMP_URL client-safe con messaggi d'errore RTMP più chiari.

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

native/ios/MatchLiveTvTests/ApiInstantTests.swift

@@ -13,6 +13,20 @@ final class ApiInstantTests: XCTestCase {
         XCTAssertEqual(target?.connectURL, "rtmp://stream.example.com/live")
         XCTAssertEqual(target?.streamName, "match_abc-123")
     }
+
+    func testRtmpIngestUrlRewritesDockerHostForLocalApi() {
+        let resolved = RtmpIngestUrlLogic.resolve(
+            "rtmp://mediamtx:1935/live/match_abc",
+            apiBaseUrl: "http://localhost:3000"
+        )
+        XCTAssertEqual(resolved, "rtmp://127.0.0.1:1935/live/match_abc")
+    }
+
+    func testRtmpIngestUrlKeepsProductionHost() {
+        let url = "rtmp://www.matchlivetv.it:1935/live/match_abc"
+        let resolved = RtmpIngestUrlLogic.resolve(url, apiBaseUrl: "https://www.matchlivetv.it")
+        XCTAssertEqual(resolved, url)
+    }
 }
 
 enum OverlayKindMapping {
@@ -45,3 +59,29 @@ enum RTMPUrlParserLogic {
         return Target(connectURL: connect, streamName: streamName)
     }
 }
+
+/// Copia della logica `RtmpIngestUrl` per test senza bundle Info.plist.
+enum RtmpIngestUrlLogic {
+    private static let dockerInternalHosts: Set<String> = ["mediamtx", "host.docker.internal"]
+
+    static func resolve(_ urlString: String, apiBaseUrl: String) -> String {
+        guard var components = URLComponents(string: urlString),
+              let host = components.host?.lowercased() else {
+            return urlString
+        }
+        let apiHost = URL(string: apiBaseUrl)?.host?.lowercased()
+        let isLocalApi = apiHost.map { $0 == "localhost" || $0 == "127.0.0.1" || $0.hasSuffix(".local") } ?? false
+        guard dockerInternalHosts.contains(host) || isLocalApi else {
+            return urlString
+        }
+        let ingestHost: String
+        if let apiHost, apiHost != "localhost", apiHost != "127.0.0.1" {
+            ingestHost = apiHost
+        } else {
+            ingestHost = "127.0.0.1"
+        }
+        components.host = ingestHost
+        if components.port == nil { components.port = 1935 }
+        return components.url?.absoluteString ?? urlString
+    }
+}