Emit a completion summary in plain prose: what was built, the key changes (files, behavioral effect — not just paths), trade-offs applied, anything notable about how the work landed. Adapt detail to the task's complexity — a small fix gets a couple of sentences; a multi-deliverable refactor gets a paragraph or two. Multi-repo manifests: a single summary covers the whole manifest, naming which repos' deliverables were verified. Reachable only after every Acceptance Criterion and Global Invariant verifies PASS with no BLOCKED criteria pending. End with the mandatory trailing line — directive, n…