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+# MyWhoosh Garmin Sync Implementation Roadmap
+
+The approved design is implemented in four reviewable plans, in this order:
+
+1. `2026-08-15-foundation-admin-data.md` — runnable FastAPI/SQLite/Docker foundation, admin auth, CSRF, encrypted user CRUD.
+2. `2026-08-15-fit-rewriter.md` — binary-preserving Edge 1030 Plus FIT metadata patcher and CRC validation.
+3. `2026-08-15-service-clients.md` — MyWhoosh API/token handling and Garmin `import_activity()` adapter with MFA/duplicate handling.
+4. `2026-08-15-sync-scheduler-web.md` — resumable multi-user sync engine, locking, scheduler, MFA/retry UI, and end-to-end acceptance.
+
+Each plan is independently testable and ends with a clean commit boundary. Plan 4 assumes Plans 1-3 are complete.