07-memory relies on the first /abcd:ahoy after itd-36 backfilling memory pages' source class; ahoy's detection and apply passes carry no such step

07-memory relies on the first /abcd:ahoy after itd-36 backfilling memory pages' source class; ahoy's detection and apply passes carry no such step

A sequencing impossibility (severity minor) found by the cross-document consistency pass.

• End A: .abcd/development/brief/05-internals/07-memory.md:42 — "backfilled with source.class: session_memory as the default on first /abcd:ahoy after itd-36 ships"
• End B: .abcd/development/brief/04-surfaces/01-ahoy.md:591 — "What it probes, in behaviour rather than in step order: the folder's kind and the plugin root"

07-memory makes ahoy the step that backfills source.class: session_memory onto pre-existing memory pages. 01-ahoy enumerates everything its one detection pass probes and every gap category the apply pass acts on, and an install with no detected gap writes nothing; none of those names the memory store or a source-class backfill. As written, ahoy cannot perform the step 07-memory depends on.

Evidence: .abcd/work/reviews/2026-10-26-consistency/00-summary.md, finding 308.