NAP-UPLOAD: Add rail introspection - #76
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NAP-UPLOAD needs a way for napplets to inspect supported upload rails and coarse limits without making rail choice mandatory. The new info operation is advisory, keeps default rail selection in the shell when request.rail is omitted, and lets explicit rail requests fail through the existing policy boundary. Constraint: Upload rail selection and credentials remain runtime-owned. Rejected: Require info() before upload(request) | would make introspection part of the default flow and weaken runtime-owned defaults. Rejected: Expose server URLs or credentials | would leak shell configuration across the seam. Confidence: high Scope-risk: narrow Directive: Keep upload.info advisory; do not turn it into a mandatory capability negotiation step. Tested: git diff --check; targeted rg consistency check for upload.info, UploadInfo, request.rail, unsupported rail, and policy denied wording. Not-tested: Runtime implementation; spec-only change.
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Summary
Adds draft
upload.info()to NAP-UPLOAD because optional rail introspection is valid when it stays advisory. Napplets can inspect supported rails and coarse limits, whileupload(request)withoutrailremains the simple default path where the runtime chooses according to user/runtime policy.Changes
infoto the API surface withUploadInfoandUploadRailInfoschemas.upload.info/upload.info.resultwire messages and an example.info()is optional and MUST NOT be required before upload.request.railhandling andpolicy deniederrors.Downstream
No dependency or registry change. This is a scoped amendment on top of
nap-uploadfor implementations that need runtime-owned upload rail discovery.