[BTNET-5046] Add --silent flag to suppress stdout on success

Cargo.toml

@@ -12,6 +12,7 @@ path = "src/main.rs"
 
 [dependencies]
 anyhow = "1.0"
+libc = "0.2"
 clap = { version = "4.4", features = ["derive"] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"

src/cli/args.rs

@@ -10,6 +10,9 @@ pub struct Cli {
     #[arg(long)]
     pub summary: bool,
 
+    #[arg(long, help = "Suppress output on success")]
+    pub silent: bool,
+
     #[command(subcommand)]
     pub command: Option<Commands>,
 }

src/cli/mod.rs

@@ -15,6 +15,11 @@ const SUMMARY: &str = "Manage AI context rules across different AI coding agents
 pub fn run_cli() -> anyhow::Result<()> {
     let cli = Cli::parse();
 
+    if cli.silent {
+        #[cfg(unix)]
+        crate::suppress_stdout();
+    }
+
     if cli.summary {
         println!("{SUMMARY}");
         return Ok(());

src/commands/status.rs

@@ -42,8 +42,14 @@ pub fn run_status(
     );
 
     let status = check_project_status(current_dir, args, use_claude_skills)?;
+    let exit_code = compute_exit_code(&status);
+
     print_status_results(&status);
 
+    if exit_code != 0 {
+        std::process::exit(exit_code);
+    }
+
     Ok(())
 }
 
@@ -204,11 +210,21 @@ fn check_skill_files(
     skills_gen.check_skills(current_dir)
 }
 
+fn compute_exit_code(status: &ProjectStatus) -> i32 {
+    if !status.has_ai_rules {
+        return 2;
+    }
+    if status.body_files_out_of_sync || status.agent_statuses.values().any(|&in_sync| !in_sync) {
+        return 1;
+    }
+    0
+}
+
 fn print_status_results(status: &ProjectStatus) {
     if !status.has_ai_rules {
         println!("  📝 No AI rules found in this project");
         println!("\n💡 Run 'ai-rules init' to get started");
-        std::process::exit(2);
+        return;
     }
 
     if status.body_files_out_of_sync {
@@ -226,10 +242,6 @@ fn print_status_results(status: &ProjectStatus) {
     }
 
     print_next_steps(status);
-
-    if status.body_files_out_of_sync || status.agent_statuses.values().any(|&in_sync| !in_sync) {
-        std::process::exit(1);
-    }
 }
 
 fn print_next_steps(status: &ProjectStatus) {

src/main.rs

@@ -15,3 +15,16 @@ fn main() {
         std::process::exit(1);
     }
 }
+
+/// Redirect stdout to /dev/null so all `println!` calls become no-ops.
+/// Stderr remains unaffected.
+#[cfg(unix)]
+pub fn suppress_stdout() {
+    use std::fs::File;
+    use std::os::unix::io::AsRawFd;
+    if let Ok(devnull) = File::open("/dev/null") {
+        unsafe {
+            libc::dup2(devnull.as_raw_fd(), libc::STDOUT_FILENO);
+        }
+    }
+}