compact-plus

Secure everything the user approved before a context compaction so a later /compact can never lose or alter it. Writes verbatim intent and handoff state to disk and commits plus pushes the tracked work product in the correct repository, then reports whether it is safe to compact. It does NOT run /compact itself - it makes a later compact safe. Run this only when the limit plugin's injected ACTION line names it (session-context fill crossed a configured threshold) or when the user invokes it manually. Never self-trigger it proactively - that only wastes tokens. Accepts extra trailing instructions to perform in addition to the securing checklist.