znippy-plugin-skidbladnir 0.1.0

Skidbladnir airgap-bundle metadata plugin for znippy (native builtin — no WASM)
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znippy handler for Skidbladnir airgap bundles — the Tillsynia/Njord deploy payload (db dump · S3 blobs · container images · infra operators + Talos ISO · declarative config · encrypted secrets).

It teaches znippy's Arrow-IPC index what each entry of a sealed bundle is, so the archive is self-describing and DuckDB/Polars-queryable (SELECT logical_path FROM bundle WHERE member_kind = 's3-blob'). It adds only metadata columns — the format, the pack/move/unfold mechanics and the sealing stay owned by znippy + Skidbladnir.

Native builtin: registered in znippy-cli/src/handlers.rs::builtin_handlers, discovered via [ArchiveTypePlugin::meta]. NOT a WASM plugin.

Laws it honours: P-1 one archive = one ecosystem (--format skidbladnir); P-2 writes only the columns it declared; P-4 never panics — a member it cannot parse still writes with its path-derived member_kind, only the optional version/watermark degrade to null.