v0.14.1 — fix: the local readout now shows Who × What

Fix: MirrorSink was silently dropping the cross-match — npx @cross-deck/buckets showed the bucket table but never the Who caused the reads / Who × what sections for local OSS users. The local readout now carries the actor maps through (regression test added).

Docs: Quickstart now leads with a 30-second no-database demo, and an explicit "Seeing No readout?" note covers the empty-state every first-time user hits.