feat: v0.0.4 release

[PRASSamin]

No description provided.

[Copilot]

Pull Request Overview

This PR bumps the version from v0.0.3 to v0.0.4, finalizing the release by updating version metadata and changelog documentation.

• Updates version number in internal metadata from "0.0.3" to "0.0.4"
• Adds explanatory comments to clarify control flow in the test command
• Updates changelog to mark v0.0.4 as released on 2025-09-12

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
internal/metadata.go	Updates version constant from "0.0.3" to "0.0.4"
dev/cmd/test.go	Adds clarifying comments for return statement logic
CHANGELOG.md	Changes section header from "Unreleased" to "v0.0.4" with release date

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