feat: add about subcommand (v0.2.0)

.devtrail/07-ai-audit/agent-logs/AILOG-2026-04-04-001-about-subcommand.md

@@ -0,0 +1,44 @@
+---
+title: "Add `about` subcommand"
+type: AILOG
+date: 2026-04-04
+agent: claude-code-v1
+confidence: high
+risk_level: low
+review_required: false
+tags: [cli, feature]
+eu_ai_act_risk: not_applicable
+nist_genai_risks: []
+iso_42001_clause: []
+files_changed:
+  - src/about.rs
+  - src/cli.rs
+  - src/main.rs
+  - src/lib.rs
+---
+
+## Summary
+
+Added `arborist about` subcommand that displays project metadata (version, description, author, license, repository, website). Follows the same format as `devtrail about`.
+
+## Changes
+
+- **src/about.rs** (new): Module with `print()` function that outputs project info using `env!()` macros to read `CARGO_PKG_VERSION` and `CARGO_PKG_DESCRIPTION` at compile time.
+- **src/cli.rs**: Added `About` variant to the `Command` enum.
+- **src/main.rs**: Added match arm for `Command::About` calling `about::print()`.
+- **src/lib.rs**: Registered `pub mod about`.
+
+## Complexity Analysis
+
+Ran `arborist` on all changed files:
+
+| Function | Cognitive | Cyclomatic | SLOC |
+|----------|-----------|------------|------|
+| `about::print` | 0 | 1 | 13 |
+| `main` | 3 | 6 | 17 |
+
+All functions remain at low complexity. No documentation escalation needed.
+
+## Rationale
+
+Provides a quick way for users to see project metadata without checking Cargo.toml or the repository directly.

Cargo.toml

@@ -1,11 +1,10 @@
 [package]
 name = "arborist-cli"
-version = "0.1.1"
+version = "0.2.0"
 edition = "2024"
 description = "CLI for arborist-metrics: cognitive/cyclomatic complexity and SLOC metrics"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/StrangeDaysTech/arborist-cli"
-homepage = "https://github.com/StrangeDaysTech/arborist-cli"
 readme = "README.md"
 keywords = ["complexity", "metrics", "cognitive", "cyclomatic", "cli"]
 categories = ["command-line-utilities", "development-tools"]

src/about.rs

@@ -0,0 +1,14 @@
+pub fn print() {
+    let version = env!("CARGO_PKG_VERSION");
+    let description = env!("CARGO_PKG_DESCRIPTION");
+
+    println!();
+    println!("  Arborist CLI {version}");
+    println!("  {description}");
+    println!();
+    println!("  Author:  Strange Days Tech, S.A.S.");
+    println!("  License: MIT OR Apache-2.0");
+    println!("  Repo:    https://github.com/StrangeDaysTech/arborist-cli");
+    println!("  Web:     https://strangedays.tech");
+    println!();
+}

src/cli.rs

@@ -33,6 +33,8 @@ pub struct Cli {
 
 #[derive(Debug, Subcommand)]
 pub enum Command {
+    /// Display project information
+    About,
     /// Check for updates and install the latest version
     Update {
         /// Only check for available updates without installing

src/lib.rs

@@ -1,3 +1,4 @@
+pub mod about;
 pub mod analysis;
 pub mod cli;
 pub mod error;

src/main.rs

@@ -8,6 +8,10 @@ fn main() -> ExitCode {
     let cli = Cli::parse();
 
     match cli.command {
+        Some(Command::About) => {
+            arborist_cli::about::print();
+            ExitCode::SUCCESS
+        }
         Some(Command::Update { check }) => arborist_cli::update::run(check),
         None => match arborist_cli::run(&cli.analyze) {
             Ok(report) => report.exit_code(),