v0.1.6 — install note corrected

Install: dsh plugin --profile <name> add dsh-visual-memory (npm) or add github:xiciyang/dsh-visual-memory. A 0.0.0-stage install error is a stale pnpm metadata cache — run pnpm store prune and retry.

verify.mjs 17/17 on DSH 0.2.0-rc.2; CI green.