v0.3.0: testing and generalized dependency intelligence

[leynos]

Goal

Track the Netsuke v0.3.0 feature set, centred on first-class Netsukefile testing and a broader dependency model.

Release scope

• v0.3.0: implement the first-class Netsukefile testing framework #591 — implement the first-class Netsukefile testing framework specified by PR Specify the Netsukefile testing framework in RFC 0001 and two designs #566.
• v0.3.0: import dependency metadata from Clang, Bun, and Rust toolchains #589 — import dependency metadata from Clang, Bun, and Rust toolchains.
• v0.3.0: add non-file dependency providers, starting with URLs #590 — add non-file dependency providers, starting with URLs.

Release intent

v0.3.0 should make Netsuke substantially better at answering two questions before or without blindly executing a build:

1. Does this Netsukefile behave as intended? The test framework provides hermetic, declarative verification of manifest logic through the production compiler pipeline.
2. What does this work actually depend on? External dependency importers and non-file providers broaden the graph beyond hand-authored local file edges.

The three strands should share compiler/IR infrastructure where it is genuinely common, but they should not be collapsed into one abstraction. Test doubles model controlled observations; importers consume dependency knowledge; providers define dependency identity and freshness.

Acceptance criteria

• All three tracked capability areas have usable documented surfaces by v0.3.0 final.
• Their IR/compiler boundaries compose rather than bypass one another.
• Structured output, non-interactive behaviour, localization, and diagnostics follow the canonical CLI contracts established by v0.2.0.
• Security and reproducibility boundaries are explicit for external tool invocation and network-backed dependencies.
• Netsuke dogfoods the testing framework and representative dependency import/provider cases before release.
• Full repository quality and release gates pass on the exact release commit.

Deferred

A broader semantic Netsukefile linter is targeted at v0.4.0 in #592, where it can consume the structured recipes, change-detection data, test semantics, and richer dependency graph delivered by earlier releases.