Add tracing with --verbose and --quiet flags

Cargo.toml

@@ -21,3 +21,5 @@ comfy-table = "7.1"
 futures = "0.3"
 rpassword = "7.4"
 thiserror = "2"
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter", "fmt"] }

src/cli.rs

@@ -129,6 +129,14 @@ pub struct Cli {
     #[arg(long, global = true)]
     pub json: bool,
 
+    /// Show config-source details and enable debug logging.
+    #[arg(long, global = true, conflicts_with = "quiet", help_heading = "Global Options")]
+    pub verbose: bool,
+
+    /// Reduce logging to errors only.
+    #[arg(long, global = true, conflicts_with = "verbose", help_heading = "Global Options")]
+    pub quiet: bool,
+
     #[command(subcommand)]
     pub command: Command,
 }

src/main.rs

@@ -8,6 +8,7 @@ mod output;
 use std::process::ExitCode;
 
 use clap::Parser;
+use tracing_subscriber::EnvFilter;
 
 use crate::cli::{Cli, Command, CommentCommand, IssueCommand};
 use crate::error::CliResult;
@@ -16,6 +17,7 @@ use crate::output::OutputMode;
 #[tokio::main]
 async fn main() -> ExitCode {
     let cli = Cli::parse();
+    init_tracing(cli.verbose, cli.quiet);
     match run(cli).await {
         Ok(()) => ExitCode::SUCCESS,
         Err(err) => {
@@ -71,3 +73,19 @@ async fn run(cli: Cli) -> CliResult<()> {
         },
     }
 }
+
+fn init_tracing(verbose: bool, quiet: bool) {
+    let level = if quiet {
+        "error"
+    } else if verbose {
+        "debug"
+    } else {
+        "warn"
+    };
+
+    let _ = tracing_subscriber::fmt()
+        .with_target(false)
+        .without_time()
+        .with_env_filter(EnvFilter::new(level))
+        .try_init();
+}