Both sides bootstrapped CONCEPTS.md — kept main's broader structure (Missions,
Merge lifecycle, CE sessions) and folded the branch-group vocabulary into its
Merge-lifecycle cluster (enriched Shared branch group + Self-healing sweep;
added Branch assignment mode, Landed, Group promotion). Union-merged core
index/store imports; took main's AGENTS.md discoverability wording. Also adds
execFile to the two child_process test mocks that only stubbed exec (the
coordinator's argv-based git calls now require it).
First docs/solutions/ learning: synthetic groupIds, mock-masked engine wiring,
and side-effect-free state flips (PR #1357 post-mortem). Seeds CONCEPTS.md with
the branch-group domain vocabulary and surfaces both knowledge stores in
AGENTS.md reference docs.
Document why PluginSkillContribution.skillFiles silently fails to load bundled
skills in live sessions (resolver only filters disk-discovered skills) and the
physical-install + additionalSkillPaths-forwarding fix, as a searchable
docs/solutions/ learning. Surface docs/solutions/ in AGENTS.md so agents
discover it.
