feat: Add JSONNET_PATH support for cli

[He-Pin]

refs: #608

@tmeijn would you like to test this locally?

[Copilot]

Pull request overview

Adds support for resolving Jsonnet imports via the JSONNET_PATH environment variable in the CLI/runtime, aligning sjsonnet behavior with other Jsonnet implementations and addressing issue #608.

Changes:

• Extend Config to parse JSONNET_PATH and combine it with --jpath/-J values (including --reverse-jpaths-priority behavior for -J only).
• Thread an optional jsonnetPathEnv override into SjsonnetMainBase.main0 for testability and wire it into importer search roots.
• Add JVM and JVM-native tests covering JSONNET_PATH parsing and precedence vs -J.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
sjsonnet/test/src-jvm/sjsonnet/MainTests.scala	Adds integration tests for JSONNET_PATH import resolution and introduces an env-injecting test helper.
sjsonnet/test/src-jvm/sjsonnet/Example.java	Updates Java example invocation to match the new main0 signature.
sjsonnet/test/src-jvm-native/sjsonnet/ConfigTests.scala	Adds unit tests for JSONNET_PATH parsing and combined jpath ordering logic.
sjsonnet/src-jvm-native/sjsonnet/SjsonnetMainBase.scala	Adds jsonnetPathEnv plumbing and updates CLI/help text handling.
sjsonnet/src-jvm-native/sjsonnet/Config.scala	Implements JSONNET_PATH parsing and merges it into ordered import search paths.

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

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[tmeijn]

Hey @He-Pin just want to clarify: are you asking me to test this branch before you merge this PR or was it more an open invitation?

If it's the former: I can do that, but I know nothing of Scala or how to build the native binary. I also could not find any repo docs on how to create a build.

I just used mise to give this a try.

Thank you for working on this and quick response! 🙏🏾.