What maintaining old and current versions of the same application taught me about treating compatibility as a boundary instead of a temporary inconvenience.
The useful part of a homelab is not copying configurations into production. It is practicing the habits that survive a change in platform, scale, and ownership.
The retrospective format I use to turn failed assumptions into better tests, guardrails, and documentation without rewriting the project into a cleaner story than it really was.
Containers gave my homelab a repeatable application model, but the useful part was the discipline around persistence, networking, updates, and recovery.