feat: add deeplink nostr identity binding flow#1648
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add a buzz://nostr-bind entrypoint that validates a scoped one-time challenge, shows a consent dialog, signs the response with the selected nostr identity, and copies the signed event json for the caller. use a buzz-owned custom ephemeral event kind (24243) instead of nip-98. nip-98 is tied to http request authorization and requires u/method semantics, while this flow is an app-to-app identity binding proof with challenge_id, nonce, audience, action, protocol, origin, and expires_at tags. keep the ipc boundary narrow: tauri parses and validates deeplink inputs, frontend only handles the typed payload, and signing stays behind a profile feature helper. restrict v1 to https origins, clipboard return mode, and the buzz-nostr-identity protocol so unsupported callbacks or protocol variants fail before signing.
kalvinnchau
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Co-authored-by: npub1703xjpnw9z6ngtz632j4c7x82ve3mx4wg3wqgegjktllz8syepes0hu37e <f3e269066e28b5342c5a8aa55c78c753331d9aae445c046512b2fff11e04c873@sprout-oss.stage.blox.sqprod.co> Signed-off-by: npub1703xjpnw9z6ngtz632j4c7x82ve3mx4wg3wqgegjktllz8syepes0hu37e <f3e269066e28b5342c5a8aa55c78c753331d9aae445c046512b2fff11e04c873@sprout-oss.stage.blox.sqprod.co>
baxen
approved these changes
Jul 8, 2026
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summary
adds a
buzz://nostr-binddeeplink flow for one-time nostr identity binding.24243screenshots
after opening the deeplink:
after agreeing and signing:
test plan
cargo test --manifest-path desktop/src-tauri/Cargo.toml nostr_bindcargo test --manifest-path desktop/src-tauri/Cargo.toml nostr_identitycd desktop && pnpm typecheck