The original title is "Dev Log: 2026-07-03 — idempotent syncs, mail you can trace, and drain-not-delete"

Short summary

Dev log documenting three backend engineering patterns: idempotent API syncs that converge instead of conflicting, email tracking via framework events without external services, and modeling support incidents as first-class lifecycle entities with dedicated workflows.

• •Make API syncs idempotent—adopt existing resources on conflicts instead of erroring on duplicates
• •Build email observability from framework events (Laravel MessageSent/MessageSending) without external ESPs
• •Model major incidents as first-class entities with declare/stand-down lifecycle, not high-priority tickets

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