[eplightning]

Closes #3

[Copilot]

Pull request overview

Adds environment activation support to the Java (Eclipse Adoptium OpenJDK) proto plugin so that JAVA_HOME is set when the tool is activated.

Changes:

• Implement activate_environment plugin function to export JAVA_HOME (with macOS-specific Contents/Home handling).
• Add an integration test ensuring JAVA_HOME is provided on activation.
• Update Rust toolchain and bump (dev)dependencies to versions that support the new activation API.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/proto.rs	Adds activate_environment to return JAVA_HOME based on platform.
tests/environment_test.rs	Adds a test covering environment activation output.
Cargo.toml	Updates proto_pdk / test utils and other dependency versions.
rust-toolchain.toml	Bumps the Rust toolchain channel used by the repo.
Cargo.lock	Refreshes the lockfile to match dependency/toolchain updates.

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