Release 0.2.1: describe derives input_formats from the registry; add --version

[copyleftdev]

Found while verifying the installed 0.2.0 binary: describe under-reported supported formats.

The bug

describe.rs hardcoded input_formats as the original six
(csv/tsv/ndjson/json/parquet/arrow) — a literal that never tracked
the 26 parsers added since. So the machine-discovery surface claimed 6 formats
while the binary actually reads 32. An agent calling describe to learn
capabilities would never know to feed it pcap/syslog/EVTX/etc. (ironically,
describe.rs's own doc comment promises it's "derived from the same registries
scan uses, so the description can never drift from behavior").

Fix

• input_formats now derives from the live ParserRegistry — reflecting the
  build's features (all 32 by default; fewer under --no-default-features).
• A guard test asserts describe's input_formats equal the registry ids,
  so it can't silently drift again.
• Wired anomalyx --version (-V / version), which previously printed
  nothing.

Bumps the workspace version 0.2.0 → 0.2.1. fmt / clippy / full workspace
tests green.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes

  • The describe command now retrieves supported formats from the live parser registry instead of using a hardcoded list.

• New Features

  • Added support for version flags (-V, --version, version subcommand).

• Chores

  • Released version 0.2.1.

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Walkthrough

This release (v0.2.1) fixes the describe command to source input_formats from the live parser registry instead of a stale hardcoded list, adds a guard test to prevent future drift, bumps the workspace version, documents the release in the changelog, and adds CLI version flag support.

Changes

v0.2.1 Release

Layer / File(s)	Summary
Derive describe input formats from live parser registry crates/anomalyx/src/describe.rs	describe_json imports ParserRegistry and computes input_formats from ParserRegistry::default().ids() instead of a hardcoded list. A new test parses the output and verifies the formats match the registry's advertised ids.
v0.2.1 version bump and changelog Cargo.toml, CHANGELOG.md	Workspace package version bumped from 0.2.0 to 0.2.1, workspace dependencies for ax-core, ax-normalize, and ax-detect updated to 0.2.1, and changelog updated with a new [0.2.1] section documenting the registry sync fix plus updated comparison reference links.
CLI version flag support crates/anomalyx/src/main.rs	Command dispatcher extended to recognize -V, --version, and version flags, printing the crate version and returning a clean exit code.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A registry now guides the describe,
No stale hardcodes here to relieve,
The version is bumped, the changelog neat,
And -V flags make our CLI complete! 🎉

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title directly summarizes the main changes: releasing v0.2.1, fixing describe to derive input_formats from the registry, and adding --version support.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ 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/describe-formats-0.2.1

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