Design, plan, fact-check report, and athanor implementation report for
the adept discovery and tiered knowledge folders feature. Also captures
the harness behavior investigation as an open goal.
Three-commit plan: create spire:project skill with shell injection,
rewire Igor and Athanor to drop @ imports, and add spire:init with
shared-vs-personal detection and adept scaffolding.
Plan covers: stale tome.just path (quick fix), curator stub skill
(minimal first step), and journal graduation-candidate signal
(journal template + wrap-up update). Design questions deferred
for findings 4 and 6; actionable first steps defined for all three.