barsa 912582caf7 docs: add get-started flow refactoring design
Covers splitting the god class into per-path workflow services,
compensating transactions via DistributedTransactionService,
error classification, XState frontend state machine, and
legacy signup flow removal.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-24 13:57:43 +09:00
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