Covers auto PM's decision policy (quota and queue both failing closed when unreadable, cooldowns, concurrency caps), the drain-before-refill cycle, rotation order and per-routine opt-outs, the calendar-paced maintenance sweep, fan-out with pinned entries and locked tickets, durable claims surviving restarts and hand-offs, on-demand and drain-only ticks, and the report the dashboard shows.

## Before writing SPEC.md files

Read https://raw.githubusercontent.com/brillout/sdd/refs/heads/main/sdd.md
