[50 MRG] Bridge: devices export JSON snapshot CLI #78

50 MRG

hiri-bridge devices export --out path dumps current registry (no tokens).

Acceptance

• CLI + tests

Claim (MergeOS MRG)

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6. Open a PR to HIRI with Fixes #<this-issue>

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Payout

Maintainer reviews PR → merge → MRG credit on MergeOS ledger to github:<author> (25 / 50 / 100 / 200 scale per labels).

Evidence

Attach screenshots / sample output / photos as required by acceptance. No secrets, no force-push, no scraped private PII.