docs-adr — Decision memory the next session can load

Degree of freedom: MIXED — T1 is the priority. What to record [HIGH freedom]; format, supersede-not-edit, and present-backfill-first [LOW freedom — run exactly].

Install and maintain the repo's decision memory. Code shows what was decided; nothing shows why, or what was rejected — so every new agent session is free to "improve" its way back to an alternative you already ruled out. Re-litigated decisions are the slowest form of drift. An ADR makes the decision durable and its reversal deliberate.

This skill vs neighbors