Fix punteggio broadcast iOS: decodifica score e aggiornamento UI.

ScoreStateDto non leggeva home_points con convertFromSnakeCase; ScoreController assegna sempre lo stato, aggiornamento ottimistico e refresh overlay.

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

native/ios/MatchLiveTvTests/ScoreActionDecodeTests.swift

@@ -0,0 +1,36 @@
+import XCTest
+@testable import MatchLiveTv
+
+final class ScoreActionDecodeTests: XCTestCase {
+    func testDecodesScoreActionResponse() throws {
+        let json = """
+        {
+          "id": "821ddb81-9dc2-466a-9ad5-2555e78f4653",
+          "match_id": "e887ce1d-10ee-4680-8323-79bb8f11e0aa",
+          "status": "live",
+          "platform": "matchlivetv",
+          "score": {
+            "type": "score_update",
+            "board_type": "volley",
+            "home_sets": 0,
+            "away_sets": 0,
+            "home_points": 1,
+            "away_points": 0,
+            "current_set": 1,
+            "set_partials": [],
+            "timeout_home": false,
+            "timeout_away": false,
+            "period": null,
+            "data": {}
+          },
+          "set_won": false,
+          "match_won": false,
+          "winner": null
+        }
+        """.data(using: .utf8)!
+        let dto = try ApiInstant.decoder.decode(StreamSessionDto.self, from: json)
+        let score = try XCTUnwrap(dto.score?.toDomain())
+        XCTAssertEqual(score.homePoints, 1)
+        XCTAssertEqual(score.boardType, "volley")
+    }
+}