feat(teams): grant each participant their game's divider role

Reuse the existing CS2/LoL divider roles as participant tags: sync_team_role
now also adds the divider role for the member's team's game, and strips any
other configured divider role (switched game / dropped out). Matched by ID
against config.TEAM_DIVIDERS, so only the divider roles are ever touched.

- TeamSyncResult gains divider_added / divider_removed; summary tallies both
- /teamsync report and log line surface divider_assigned / divider_removed
- tests: grants the game divider, swaps it on a game switch

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XPRsW4tazVtYi2jNzVQkre

tests/test_team_sync.py

@@ -13,6 +13,7 @@ from pathlib import Path
 
 sys.path.insert(0, str(Path(__file__).parent.parent))
 
+import config  # noqa: E402
 from core import member_sync, sheets  # noqa: E402
 from tests.conftest import run  # noqa: E402
 
@@ -253,6 +254,9 @@ class FakeGuild:
         self.created.append(name)
         return role
 
+    def get_role(self, rid):
+        return next((r for r in self.roles if r.id == rid), None)
+
 
 def test_sync_creates_missing_team_role_and_removes_old_one(monkeypatch):
     old_team = FakeRole(1, "OldTeam")
@@ -292,6 +296,43 @@ def test_sync_uses_existing_team_role(monkeypatch):
     assert genesis in member.roles
 
 
+def test_sync_grants_game_divider_role(monkeypatch):
+    genesis = FakeRole(3, "GENESIS")
+    cs2_div = FakeRole(100, "====== CS2 2026 ======")
+    member = FakeMember(1, "kapa", roles=[])
+    guild = FakeGuild([genesis, cs2_div])
+
+    monkeypatch.setattr(sheets, "get_team_for_username", lambda n: "GENESIS")
+    monkeypatch.setattr(sheets, "all_team_names", lambda: {"GENESIS"})
+    monkeypatch.setattr(sheets, "get_team_dividers", lambda: {"GENESIS": 100})
+    monkeypatch.setattr(config, "TEAM_DIVIDERS", {"cs2_2026": 100, "lol_2026": 200})
+
+    result = run(member_sync.sync_team_role(member, guild))
+
+    assert result.divider_added == "====== CS2 2026 ======"
+    assert cs2_div in member.roles
+
+
+def test_sync_swaps_divider_role_on_game_switch(monkeypatch):
+    genesis = FakeRole(3, "GENESIS")
+    cs2_div = FakeRole(100, "CS2")
+    lol_div = FakeRole(200, "LoL")
+    member = FakeMember(1, "kapa", roles=[lol_div])  # was LoL, now on a CS2 team
+    guild = FakeGuild([genesis, cs2_div, lol_div])
+
+    monkeypatch.setattr(sheets, "get_team_for_username", lambda n: "GENESIS")
+    monkeypatch.setattr(sheets, "all_team_names", lambda: {"GENESIS"})
+    monkeypatch.setattr(sheets, "get_team_dividers", lambda: {"GENESIS": 100})
+    monkeypatch.setattr(config, "TEAM_DIVIDERS", {"cs2_2026": 100, "lol_2026": 200})
+
+    result = run(member_sync.sync_team_role(member, guild))
+
+    assert result.divider_added == "CS2"
+    assert result.divider_removed == ["LoL"]
+    ids = {r.id for r in member.roles}
+    assert 100 in ids and 200 not in ids
+
+
 def test_sync_strips_team_role_when_not_registered(monkeypatch):
     old_team = FakeRole(1, "OldTeam")
     member = FakeMember(1, "ghost", roles=[old_team])