docs(02-02): complete Phase 2 Stadium Foundation

- Add 02-02-SUMMARY.md documenting pipeline regeneration
- Update STATE.md: Phase 2 complete, next is Phase 2.1
- Update ROADMAP.md: Mark Phase 2 as complete (2/2 plans)
- Performance: 5 plans, 37 min total, 7.4 min average

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

.planning/phases/02-stadium-foundation/02-02-SUMMARY.md

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+# Phase 2 Plan 02: Pipeline Regeneration & Verification Summary
+
+**Regenerated canonical stadium data for all 4 core sports (122 stadiums) with complete data quality validation.**
+
+## Accomplishments
+
+- Ran stadium scraping pipeline (`scrape_schedules.py --stadiums-update`) collecting 152 stadiums (including MLS)
+- Ran canonicalization pipeline (`canonicalize_stadiums.py`) generating canonical IDs and aliases
+- Filtered bundled JSON to core 4 sports only (122 stadiums, 165 aliases)
+- Verified data quality: 0 empty states, 0 zero capacities, 0 null year_opened values
+
+## Files Created/Modified
+
+- `Scripts/data/stadiums.json` - Raw stadium data (152 stadiums including MLS)
+- `Scripts/data/stadiums_canonical.json` - Canonical output (152 stadiums)
+- `Scripts/data/stadium_aliases.json` - Historical aliases (200 aliases)
+- `SportsTime/Resources/stadiums_canonical.json` - Bundled canonical data (122 core sport stadiums)
+- `SportsTime/Resources/stadium_aliases.json` - Bundled aliases (165 aliases for core sports)
+
+## Decisions Made
+
+- **MLS excluded from bundled JSON**: MLS stadiums (30) have incomplete data from source (zero capacity, null year_opened). Deferred to Phase 2.1: Additional Sports Stadiums
+- **Core 4 sports only**: Bundled JSON contains MLB (30), NBA (30), NFL (30), NHL (32) = 122 stadiums
+- **Full data retained in Scripts/data/**: MLS data preserved for Phase 2.1 work
+
+## Issues Encountered
+
+- **MLS data quality**: The gavinr GeoJSON source for MLS stadiums lacks capacity and year_opened fields. This is expected - MLS stadiums need manual enrichment in Phase 2.1.
+
+## Stadium Counts
+
+| Sport | Scraped | Bundled |
+|-------|---------|---------|
+| MLB | 30 | 30 |
+| NBA | 30 | 30 |
+| NFL | 30 | 30 |
+| NHL | 32 | 32 |
+| MLS | 30 | 0 (deferred) |
+| **Total** | **152** | **122** |
+
+## Commits
+
+| Hash | Description |
+|------|-------------|
+| `c2da6a7` | feat(02-02): regenerate stadium data with canonicalization pipeline |
+| `1808d2c` | feat(02-02): bundle 122 core stadiums (MLB/NBA/NHL/NFL) |
+
+## Phase 2 Complete
+
+Phase 2: Stadium Foundation is complete:
+- All 4 core sports have complete stadium data
+- Data includes: canonical_id, name, city, state, lat/lng, capacity, year_opened, teams
+- Historical aliases in place for renamed stadiums (165 aliases)
+- Ready for Phase 2.1: Additional Sports Stadiums (MLS, WNBA, NWSL, CBB)