docs(04-01): complete canonical linking phase

Create 04-01-SUMMARY.md documenting:
- 5760 games canonicalized with 100% resolution rate
- 3 team aliases added (WSH, NY, ATX)
- All validation checks passed

Update STATE.md:
- Phase 4 complete (11/19 plans done, 58%)
- Add 04-01 decision on iterative alias discovery

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

.planning/STATE.md

@@ -5,23 +5,23 @@
 See: .planning/PROJECT.md (updated 2026-01-09)
 
 **Core value:** Every game must correctly link to its teams and stadium — a game at the wrong venue or with broken team links ruins trip planning.
-**Current focus:** Phase 3 — Alias Systems
+**Current focus:** Phase 4 — Canonical Linking
 
 ## Current Position
 
-Phase: 3 of 7 (Alias Systems)
-Plan: 2 of 2 in current phase
-Status: Phase complete
-Last activity: 2026-01-10 — Completed 03-02-PLAN.md (MLS/WNBA/NWSL canonicalization)
+Phase: 4 of 7 (Canonical Linking) - COMPLETE
+Plan: 1 of 1 in current phase - COMPLETE
+Status: Phase 4 complete, ready for Phase 5
+Last activity: 2026-01-10 — Completed 04-01 (Canonical Linking)
 
-Progress: █████░░░░░ 53% (10 of 19 plans complete)
+Progress: █████░░░░░ 58% (11 of 19 plans complete)
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 8
-- Average duration: 6.8 min
-- Total execution time: 54 min
+- Total plans completed: 11
+- Average duration: 5.8 min
+- Total execution time: 64 min
 
 **By Phase:**
 
@@ -30,10 +30,12 @@ Progress: █████░░░░░ 53% (10 of 19 plans complete)
 | 1. Script Architecture | 3/3 | 23 min | 7.7 min |
 | 2. Stadium Foundation | 2/2 | 14 min | 7 min |
 | 2.1. Additional Sports Stadiums | 3/3 | 17 min | 5.7 min |
+| 3. Alias Systems | 2/2 | 6 min | 3 min |
+| 4. Canonical Linking | 1/1 | 4 min | 4 min |
 
 **Recent Trend:**
-- Last 5 plans: 02.1-02 (5 min), 02.1-03 (6 min), 03-01 (4 min), 03-02 (5 min)
-- Trend: Consistent
+- Last 5 plans: 02.1-03 (6 min), 03-01 (4 min), 03-02 (2 min), 04-01 (4 min)
+- Trend: Consistent, trending faster
 
 ## Accumulated Context
 
@@ -56,6 +58,7 @@ Recent decisions affecting current work:
 - **02.1-02**: Cross-referenced shared arena coordinates from nba.py and nhl.py for WNBA venues
 - **02.1-03**: Cross-referenced 10 of 13 NWSL stadiums from mls.py for shared venue coordinates
 - **02.1-03**: CBB deferred to future phase (350+ D1 teams requires separate scoped approach)
+- **04-01**: Team abbreviation aliases discovered during canonicalization runs are added iteratively to TEAM_ABBREV_ALIASES
 
 ### Roadmap Evolution
 
@@ -72,6 +75,6 @@ None yet.
 ## Session Continuity
 
 Last session: 2026-01-10
-Stopped at: Completed Phase 3 (Alias Systems)
-Resume file: None
-Next action: Plan Phase 4 (Canonical Linking)
+Stopped at: Completed Phase 4 (Canonical Linking)
+Resume file: N/A - Phase 4 complete
+Next action: Create Phase 5 plan (CloudKit CRUD)