Fix duplicate build script rules and inject version dynamically

[jjl9807]

This PR addresses two issues:

• Prevents duplicate generation of build-script-related rules (e.g., buildscript_run), which previously caused build errors.
• Introduces dynamic version injection (e.g., buckal 0.0.0 (108061b 2025-10-14)) to improve traceability in binaries.

[Copilot]

Pull Request Overview

This PR fixes duplicate build script rule generation and adds dynamic version injection with git metadata. The changes prevent build errors from duplicate buildscript_run rules and enhance version traceability by including git commit hash and date in the binary version string.

Key changes:

• Refactored build script handling to eliminate duplicate rule generation by extracting patch logic into a reusable function
• Implemented dynamic version string generation using build-time git metadata
• Added a dedicated version subcommand to display the enhanced version information

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/buckify.rs	Refactored build script rule generation to prevent duplicates by centralizing patching logic and removing redundant code blocks
src/main.rs	Added build_version() function to generate version strings with git metadata using OnceLock for caching
src/commands/version.rs	New version subcommand that displays the dynamically generated version string
src/commands/mod.rs	Registered the new version command module
src/cli.rs	Integrated dynamic version into CLI and added version subcommand handler
build.rs	Build script to extract git commit hash and date at compile time

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[Copilot]

Pull Request Overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

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