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feat(league): League Mode v1 — Phase 1 shared infrastructure#243

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copilot/create-mini-league-sprint-season
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feat(league): League Mode v1 — Phase 1 shared infrastructure#243
Copilot wants to merge 2 commits intomasterfrom
copilot/create-mini-league-sprint-season

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Copilot AI commented Apr 22, 2026 •
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  • Phase 1 — Shared infrastructure (committed c118208)
    • 1.1 ID generators: generateSeasonId, generateSeasonTeamId, generateSeasonGameId
    • 1.2 teams schema v0 → v1 (autogen + activeLeagueIds, identity migration)
    • 1.3 New RxDB collections: seasons, seasonTeams, seasonGames, seasonPlayerState
    • 1.4 Ruleset module (CURRENT_RULESET_VERSION=1, pitcher fatigue constants)
    • 1.5 canonicalJSON.ts utility
    • 1.6 SaveStore bundle v2 (discriminated union, export/import, tombstone)
    • 1.7 Sanctioned-write capability + CustomTeamLockedError + lock
    • Test fix: COL23 in customTeamImportStore.test.ts — db.close() before freshDb
  • Phase 2 — Schedule generator + sim engine ← IN PROGRESS
    • 2.1 deriveScheduledGameSeed helper
    • 2.2 Round-robin schedule generator with bye support
    • 2.3 Headless per-game sim runner (10-step atomic flow)
    • 2.4 Pitcher fatigue updater (post-game recovery recalculation)
    • 2.5 AI rotation policy (SP/RP eligibility)
    • 2.6 SeasonModifiers type (v1: pitcher availability only)
    • 2.7 Sim-to-next-user-game batch loop
    • 2.8 Stale in_progress game reset on startup
    • 2.9 Season standings derivation
    • 2.10 Unit tests for all above
  • Phase 3 — Team autogeneration engine
  • Phase 4 — Routing + GamePage league context integration
  • Phase 5 — UI (LeaguesHubPage, LeagueSetupWizard, SeasonHome/Schedule/TeamPage)
  • Phase 6 — Final audits (@simulation-correctness, @baseball-manager)
  • Phase 7 — E2E coverage

@maniator
feat(league): Phase 1 shared infrastructure — ID generators, schema b…
c118208 
…umps, league collections, ruleset, canonicalJSON, SaveStore v2, sanctioned writes

- 1.1 generateSeasonId/SeasonTeamId/SeasonGameId in generateId.ts
- 1.2 teams schema v0→v1 with migrationStrategies + RxDBMigrationSchemaPlugin
- 1.3 seasons/seasonTeams/seasonGames/seasonPlayerState collections + types
- 1.4 CURRENT_RULESET_VERSION + pitcherFatigueConstants
- 1.5 canonicalJSON deterministic serializer
- 1.6 SaveStore v2 export/import bundle + discriminated union types
- 1.7 SANCTIONED_WRITE_CTX + withSanctionedCustomTeamWrite + CustomTeamLockedError + update() lock
- All required unit tests
- Fix RxDB OSS 16-collection limit: close db before db2 in round-trip tests
- Add _resetDbSingletonForTests to db.ts for test isolation

Co-authored-by: maniator <539579+maniator@users.noreply.github.com>
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vercel Bot commented Apr 22, 2026 •
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