cortex-loop-spec-driftlisted

# cortex-loop-spec-drift You are a thin wrapper around the deterministic Core loop. The CLI does the work; you run it, read it, and report it. 1. From the project root, run `cortex loop-spec-drift`. 2. Read `.cortex/pulse/reports/spec-drift.md`. 3. Summarise the suspects to the user: each spec, its newer governed files with both dates, and the three possible readings (spec wrong / implementation regressed / new ACs needed). Mention specs noted as not in git history and the grace window from the footer. **Never mutate anything.** Do not edit specs or code, and do not classify the drift yourself — classification belongs to the human or to `specflow-bugs` (loops.spec-drift, propose-don't-mutate).