#71 just merged — per-workspace `plugins:` now UNIONs with `defaults.plugins`
instead of replacing it. Simplifies every override in molecule-dev/ from
"defaults+1 = list 10 items" to "defaults+1 = list 1 item":
PM: 11 items → 2 (workflow-triage + workflow-retro)
Research Lead: 10 items → 1 (browser-automation)
Market Analyst: 10 items → 1
Technical Researcher: 10 items → 1
Competitive Intel: 10 items → 1
Security Auditor: 12 items → 3 (code-review + cross-vendor-review + llm-judge)
UIUX Designer: 10 items → 1 (browser-automation)
Every workspace still receives the full 9-plugin default set (ecc,
molecule-dev, superpowers, careful-bash, prompt-watchdog, audit-trail,
session-context, cron-learnings, update-docs) — verified by reading
mergePlugins() in platform/internal/handlers/org.go:645.
Also drops the stale "REPLACE not UNION" warning comments and points
defaults' header comment at the new union behaviour.
Net diff: ~30 lines removed, ~10 added. Template is now meaningfully
easier to extend — each new defaults.plugin propagates everywhere
without sweeping per-role lists.
Closes follow-up scope from PR #70.