feat(vault): report wiring and feed health

[hpmaxi]

Summary

This PR adds health(). It warns when freshness_duration is shorter than the notice, so an epoch does not reopen cancellation on its own, and it reports the feed's state and every wiring check finish_setup makes except the share supply. The harness deploy prints it and fails on a wiring gap.

Changes

• health() reports setup, the token and oracle bindings, the sole manager role, the allowlist and the compliance binding
• It also reports whether the feed can price now and whether a report outlives the notice
• The harness deploy prints it and stops when a wiring flag is false

Deviations

• The oracle's emergency stop is the NAV pause in this base (pause_nav), not the plan's "ripcord" naming; the test and the kit-spec line ("the NAV is not paused") use that name instead.

Acceptance criteria

• One flag per wiring check, the same checks finish_setup uses
• feed_valid false with no report or a raised NAV pause
• freshness_covers_notice false when the notice is longer than a report lives
• The harness deploy prints health() and fails when a wiring flag is false

Test plan

Automated tests

1. cargo test -p async-vault health: 5 passed (plus 1 pre-existing unrelated test matched by the name filter).
2. cargo test --locked (whole workspace): 369 passed in async-vault; all other crates unchanged and green.

Manual verification

1. HARNESS_NETWORK=local npm run deploy -w scripts/harness against a local stellar/quickstart network: the output has a health line with every wiring flag true, setup_open false, feed_valid false (expected pre-attestation), freshness_covers_notice true.

Breaking changes

None.

Checklist

• Self-reviewed my own diff
• Tests added or updated
• Docs updated (if applicable)
• No unrelated changes bundled in

Screenshots

None.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
strata-vault-kit-app	Ready	Preview	Oct 19, 2026 5:32pm UTC