carve advise --json: a version field and a stability promise — behold is about to consume it

[lex00]

INTENTIUS/behold#230 M1 renders the peelability report: behold carve <report.json> converts the advise JSON to a graph (bands → drift palette, boundary edges drawn, score arithmetic in the inspect pane). That makes the report a cross-tool contract, and today it has no schema version. Ask: (1) a top-level version (or schemaVersion) field; (2) the per-resource shape (address, score, band, tier, inbound/outbound edge lists, has_dynamic, instances, native mapping) documented as stable-or-versioned in the carve CLI doc. No shape changes requested — just the promise and the field, so a renderer can refuse politely instead of misreading.

[lex00]

Concrete gap found by the first consumer (INTENTIUS/behold#258, merged): advise --json emits per-resource inbound/outbound counts only. BoundaryEdge/boundaryReport exist in packages/core/src/terraform/carve.ts but nothing on the advise path calls them — they're emit/bridge-path only. Counts can't be paired back into edges (chant's sample estate has 4/4 admitting several matchings), so the rendered report draws zero boundary edges and the predicted-diff highlight (behold#230 M1 → the #254 walkthrough's Pick step) can't work.

Extending this issue's ask to two items:

1. the version field + stability promise (as filed);
2. emit the boundary edge lists in the JSON — per resource or top-level, chant's own BoundaryEdge shape, split by or labeled with direction. behold already renders them the moment they appear (forward-shape suite committed in behold#258, with a canary test that fires the day the field shows up).