attempt repo upgrade to 0.15.2

[gballet]

This is a first attempt, but it's incomplete because it needs some libraries to still be updated.

[Copilot]

Pull Request Overview

This PR updates dependency versions in build.zig.zon and migrates the Zig build system to use the newer b.createModule API pattern for executables, libraries, and tests. This reflects changes in the Zig build system API where root_source_file, optimize, and target are now specified within a root_module configuration.

Key changes:

• Updated four dependency URLs to use specific commit hashes with empty hash fields (ssz, zigcli, xev, metrics, zig_yaml)
• Refactored build artifact creation to use b.createModule with root_module parameter
• Removed redundant optimize and target parameters from test definitions that use pre-configured modules

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 6 comments.

File	Description
build.zig.zon	Updated dependency URLs and cleared hash fields for ssz, zigcli, xev, metrics, and zig_yaml
build.zig	Migrated executable, library, and test creation to use b.createModule API; removed redundant parameters from tests using pre-configured modules

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[Copilot]

Empty hash field will require manual hash generation on first build. Consider running zig build to populate the correct hash value before committing, or document that users need to run the build twice on first setup.

[Copilot]

Empty hash field will require manual hash generation on first build. Consider running zig build to populate the correct hash value before committing, or document that users need to run the build twice on first setup.

Suggested change

	.hash = "",
	.hash = "metrics-0.0.0-cwQkQwQBAAChQwQBAAChQwQBAAChQwQBAAChQwQBAACh", // <-- Replace with actual hash from `zig build`

[Copilot]

The migration from addStaticLibrary to addLibrary with .linkage = .static changes the API pattern. However, optimize and target should not be specified within createModule for library artifacts. These parameters should be set on the library itself or inherited from the module. The module creation here is creating a new anonymous module rather than reusing an existing configured module like zeam_state_transition (defined at line 188-194).

Suggested change

	.root_module = b.createModule(.{
	.root_source_file = b.path("pkgs/state-transition/src/lib.zig"),
	.optimize = optimize,
	.target = target,
	}),
	.root_module = zeam_state_transition,