gc-membrane — the AgentOps close door for Gas City

Canonical pack source: packs/agentops-membrane/ in the AgentOps repo (git-tracked). Imported into a city via pack.toml (pinned tree-URL, or local path while iterating). Operator loop that drives it: using-gc.

Constraints

• Treat packs/agentops-membrane/ as the canonical source and installed city copies as projections, because parallel edits create an untraceable close-door fork.
• Fail closed: no canonical, nonce-bound, cross-family terminal verdict means the quest stays open, because agent-written synthesis is not proof.
• Never auto-merge or auto-push and never let a reviewer mutate the builder worktree, because author/judge separation and human merge authority are load-bearing boundaries.

Why it exists (the one structural gap)