fix: remove stale "Rating Boosts coming soon" from Superfractor notification

Tier boosts shipped in Phase 2 — the teaser field in the T4 tier-up
embed was outdated. Remove it and update tests + test plan to match.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

helpers/refractor_notifs.py

@@ -63,11 +63,6 @@ def build_tier_up_embed(tier_up: dict) -> discord.Embed:
             ),
             color=color,
         )
-        embed.add_field(
-            name="Rating Boosts",
-            value="Rating boosts coming in a future update!",
-            inline=False,
-        )
     else:
         embed = discord.Embed(
             title="Refractor Tier Up!",

tests/refractor-integration-test-plan.md

@@ -542,10 +542,8 @@ REF-55, REF-60 through REF-64) can be validated via API calls and bot logs.
 | | - Title: "SUPERFRACTOR!" (not "Refractor Tier Up!") |
 | | - Description: `**{Player Name}** has reached maximum refractor tier on the **{Track Name}** track` |
 | | - Color: teal (`0x1ABC9C`) |
-| | - Extra field: "Rating Boosts" with value "Rating boosts coming in a future update!" |
 | **Pass criteria** | 1. Title is "SUPERFRACTOR!" |
 | | 2. Description mentions "maximum refractor tier" |
-| | 3. "Rating Boosts" field is present |
 
 ### REF-63: Multiple tier-ups in one game
 | Field | Value |

tests/test_refractor_notifs.py

@@ -143,36 +143,11 @@ class TestBuildTierUpEmbedSuperfractor:
         embed = build_tier_up_embed(tier_up)
         assert embed.color.value == 0x1ABC9C
 
-    def test_note_field_present(self):
-        """Tier 4 must include a note field about future rating boosts."""
+    def test_no_extra_fields(self):
+        """Tier 4 embed should have no extra fields — boosts are live, no teaser needed."""
         tier_up = make_tier_up(old_tier=3, new_tier=4)
         embed = build_tier_up_embed(tier_up)
-        field_names = [f.name for f in embed.fields]
-        assert any(
-            "rating" in name.lower()
-            or "boost" in name.lower()
-            or "note" in name.lower()
-            for name in field_names
-        ), "Expected a field mentioning rating boosts for tier 4 embed"
-
-    def test_note_field_value_mentions_future_update(self):
-        """The note field value must reference the future rating boost update."""
-        tier_up = make_tier_up(old_tier=3, new_tier=4)
-        embed = build_tier_up_embed(tier_up)
-        note_field = next(
-            (
-                f
-                for f in embed.fields
-                if "rating" in f.name.lower()
-                or "boost" in f.name.lower()
-                or "note" in f.name.lower()
-            ),
-            None,
-        )
-        assert note_field is not None
-        assert (
-            "future" in note_field.value.lower() or "update" in note_field.value.lower()
-        )
+        assert len(embed.fields) == 0
 
     def test_footer_text_is_paper_dynasty_refractor(self):
         """Footer must remain 'Paper Dynasty Refractor' for tier 4 as well."""