style: drop "— Game X" from all series blurbs

The game number is redundant with the series summary already shown on
the card. Blurbs now read cleaner: "Win-or-go-home." instead of
"Win-or-go-home — Game 7."

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_playoff_series.py

@@ -73,7 +73,7 @@ class TestSeriesBlurb:
 
     def test_game7_blurb(self):
         game = make_playoff_game(top_wins=3, bottom_wins=3)
-        assert series_blurb(game) == "Win-or-go-home \u2014 Game 7."
+        assert series_blurb(game) == "Win-or-go-home."
 
     def test_clincher_blurb_names_leader(self):
         game = make_playoff_game(
@@ -86,12 +86,10 @@ class TestSeriesBlurb:
         blurb = series_blurb(game)
         assert "Top Seeds" in blurb
         assert "close it out" in blurb
-        assert "Game 5" in blurb
 
     def test_pivotal_blurb(self):
         game = make_playoff_game(top_wins=2, bottom_wins=2)
         assert "pivotal" in series_blurb(game).lower()
-        assert "Game 5" in series_blurb(game)
 
     def test_leader_trailer_blurb(self):
         game = make_playoff_game(top_wins=2, bottom_wins=1)
@@ -102,8 +100,7 @@ class TestSeriesBlurb:
     def test_tied_mid_series_blurb(self):
         game = make_playoff_game(top_wins=1, bottom_wins=1)
         blurb = series_blurb(game)
-        assert "1" in blurb
-        assert "Game 3" in blurb
+        assert "1‑1" in blurb
 
     def test_final_clincher_falls_through_to_leader_blurb(self):
         # Post-game seriesStatus (3-0) would trigger the clincher branch, but