Collapse Phases 4 (summary commit) + 5 (brain note) into a single capture-driven Phase 4. The skill now assembles one brain:capture payload (insights + tickets + summary + context) and dry-runs-then-executes; capture owns the brain/gitea/ai-sessions writes, the I1 gate, the I5 audit record, and the supersession/read-after-write discipline server-side. Adds the classification-gate lesson learned dogfooding capture this session: effective classification = strictest across ALL targets (wings, ticket repos, repos_touched); untagged repos (brain, ai-sessions) fail-safe to confidential and get refused via claude.ai, so repos_touched must stay to internal-default repos. Legacy inline path kept only as the capture-unreachable fallback. Staleness prose removed (server owns it now). Partial of #62; harness-token + harvest-adapter + fidelity-supersession work remain.