Agent Skills: flow-next-map

Wrap `clawpatch map` to produce a semantic feature index of the repo (~20 languages, persisted at `.clawpatch/features/*.json`). Detects install, runs `clawpatch init` when `.clawpatch/` absent, invokes provider-free `clawpatch map --source heuristic` by default; `--source auto|agent` flows through as passthrough. Opt-in enrichment — scouts and prime read the resulting index, but flowctl never depends on clawpatch.