suaveplan/openspec/changes/enterprise-gaming-game-persistence/tasks.md

Tasks: enterprise-gaming-game-persistence

0. Pre-flight (non-negotiable)

• 0.1 Confirm clean working tree (git status reports nothing) and no in-flight worktrees with uncommitted work (git worktree list then git status in each)
• 0.2 If any worktrees exist under .claude/worktrees/, account for each one: still-active agent, work-pending-merge, or stale-and-prune. Stale worktrees MUST be removed (git worktree remove) before opening a new one — code that has been lost twice on main is the failure mode this guards against.
• 0.3 Confirm the package set in MANIFEST.md matches find packages -maxdepth 3 -name package.json count. Drift here means a prior change archived without regenerating the manifest.

Phase 1 — Scaffold

• Create gaming/engine/game-persistence/ (@suaveplan/game-persistence, 0.1.0, sideEffects: false)
• tsconfig.json, vitest.config.ts

Phase 2 — Error codes & constants

• src/error-codes.ts — GamePersistenceError, SAVE.* codes
• src/constants/index.ts — DEFAULT_MAX_SLOTS, DEFAULT_MAX_SIZE_BYTES, AUTOSAVE_SLOT

Phase 3 — Types

• src/types/common.ts + common.md — SaveSlot, Migration, SaveManagerOptions

Phase 4 — Migration runner

• src/core/migration-runner/migration-runner.ts — chain validation, sequential migration, gap/cycle detection
• Tests + docs

Phase 5 — Save manager

• src/core/save-manager/save-manager.ts — save/load/delete/list/autosave with serialize + storage
• OTel spans + events
• Tests (including migration path, slot limit enforcement)
• Docs

Phase 6 — Integration tests

• tests/integration.test.ts — full round-trip: save → reload with migration → verify

Phase 7 — Pre-publish gate

• bunx turbo lint typecheck test --filter=@suaveplan/game-persistence green
• 100% coverage
• Publish: bun scripts/publish.ts --package @suaveplan/game-persistence