Adds wiki/process/tick-ledger.md (coverage table + findings queue), tools/tick-brief.sh (one-shot intake), a step-0 intake order in wiki/process/tick.md (decision-made harvest, then queue, then fresh stalest-slice audit), the recurrence-promotes-to-the-gate rule, and routes AGENT.md/CLAUDE.md/skill shims through the brief. Slice L in agent-scale.md; decision history and devlog entries included. Defense: wiki/process/living-spec.md#the-corpus-rule requires ticks to keep the corpus alive by auditing one coherent slice at a time; the memoryless procedure biased audits toward hot slices, discarded surplus discovery, and left clean verdicts untraced, so the same corpus was re-audited while cold slices drifted. Cameron adopted the five-part restructuring in session on 2026-07-11 (decision log entry in wiki/log/decisions/2026-07-11.md); this amends the owning procedure page and agent-scale spec in the same commit.