fix(cli): report real crate version in --version

[Kingvic300]

Summary

txio --version printed txio 1.0 because the clap version was hardcoded, disagreeing with the actual crate version (0.1.2 in Cargo.toml) and the published crate.

Changes

• Use env!("CARGO_PKG_VERSION") for the clap command version in parser.rs so it always matches the build.

Testing

• cargo check -p txio passes.

Closes #42

Summary by CodeRabbit

• Chores
  • CLI version now accurately reflects the current package version instead of displaying a hardcoded value.

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Project	Deployment	Actions	Updated (UTC)
txio	Ready	Preview, Comment	Jun 7, 2026 11:37am

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 4d9541ae-9a0b-4166-890c-dc02b172a9bb

📥 Commits

Reviewing files that changed from the base of the PR and between 74b9e4b and 31b227d.

📒 Files selected for processing (1)

• cli/src/cli/parser.rs

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📝 Walkthrough

Walkthrough

This PR resolves the CLI version mismatch by updating the clap command metadata to use the Cargo package version macro. The hardcoded version string "1.0" is replaced with env!("CARGO_PKG_VERSION"), ensuring txio --version always reports the version from Cargo.toml.

Changes

CLI Version Configuration

Layer / File(s)	Summary
Dynamic version from Cargo metadata cli/src/cli/parser.rs	The Cli command's version attribute is changed from the hardcoded string "1.0" to env!("CARGO_PKG_VERSION"), which resolves to the crate version at compile time.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A hardcoded one became the past,
Now Cargo's version holds steadfast,
The CLI whispers truth at last—
--version now aligns so fast! 🐰✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and accurately describes the main change: updating the CLI version flag to report the real crate version instead of a hardcoded string.
Linked Issues check	✅ Passed	The code change directly addresses issue #42 by replacing the hardcoded version string with env!("CARGO_PKG_VERSION"), ensuring --version reflects the actual build version.
Out of Scope Changes check	✅ Passed	The change is tightly scoped to the single requirement from issue #42 with no extraneous modifications to unrelated code.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/42-cli-version

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