feat(03-02): add NWSL to canonicalization pipeline

- Import NWSL_TEAMS from nwsl module
- Add NWSL_DIVISIONS dict (single league structure, no divisions)
- Add NWSL to sport_mappings for team canonicalization
- Add NWSL team abbreviation aliases (ANG, GOTHAM, NCC, BAY, etc.)
- Add NWSL stadium aliases (CPKC Stadium, SeatGeek Stadium, WakeMed, etc.)

Total teams: 180 (13 NWSL teams added)
Final breakdown: NBA(30) + MLB(30) + NHL(32) + NFL(32) + MLS(30) + WNBA(13) + NWSL(13)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Scripts/canonicalize_games.py

@@ -117,6 +117,16 @@ TEAM_ABBREV_ALIASES = {
     ('WNBA', 'PHX'): 'team_wnba_pho',   # Phoenix Mercury
     ('WNBA', 'CONN'): 'team_wnba_con',  # Connecticut Sun
     ('WNBA', 'WSH'): 'team_wnba_was',   # Washington Mystics
+
+    # NWSL
+    ('NWSL', 'ANG'): 'team_nwsl_la',     # Angel City FC (uses LA abbrev)
+    ('NWSL', 'ACFC'): 'team_nwsl_la',    # Angel City FC alt
+    ('NWSL', 'NCC'): 'team_nwsl_nc',     # North Carolina Courage
+    ('NWSL', 'GOTHAM'): 'team_nwsl_nj',  # NJ/NY Gotham FC
+    ('NWSL', 'NY'): 'team_nwsl_nj',      # NJ/NY Gotham FC alt
+    ('NWSL', 'BAY'): 'team_nwsl_sj',     # Bay FC (San Jose)
+    ('NWSL', 'RLC'): 'team_nwsl_uta',    # Racing Louisville -> Utah Royals (rebrand)
+    ('NWSL', 'LOU'): 'team_nwsl_uta',    # Louisville -> Utah alt
 }