Add verbose mode, logging levels, log file output

crates/dwell-cli/src/commands.rs

@@ -20,6 +20,7 @@
     pub verbose: u8,
     pub quiet: bool,
     pub json: bool,
+    pub log_level: Option<String>,
 }
 
 pub fn run(cli: Cli) -> dwell_core::Result<()> {
@@ -29,13 +30,16 @@
         verbose,
         quiet,
         json,
+        log_file: _,
+        log_level,
         command,
     } = cli;
     let cli_ref = CliRef {
         dry_run,
         verbose,
         quiet,
         json,
+        log_level,
     };
     let cfg = dwell_core::Config::load(&_config)?;
 
@@ -120,7 +124,7 @@
     use crate::output::Output;
 
     pub fn run(_cli: &CliRef) {
-        let out = Output::new(_cli.json, _cli.verbose, _cli.quiet);
+        let out = Output::new(_cli.json, _cli.verbose, _cli.quiet, _cli.log_level.clone());
         out.title("dwell doctor — system health check");
 
         for (name, default) in &[
@@ -153,7 +157,7 @@
             Some(p) => out.info(&format!("dwell.toml not yet created at {}", p.display())),
             None => out.error("Cannot determine config directory"),
         }
 
         let source_path = dirs::data_dir().map(|d| d.join("dwell"));
         match &source_path {
             Some(p) if p.exists() => out.success(&format!("Source directory exists at {}", p.display())),

crates/dwell-cli/src/commands/add.rs

@@ -5,7 +5,7 @@ use crate::output::Output;
 
 pub fn run(cli: &CliRef, _cfg: &dwell_core::Config, path: PathBuf) -> dwell_core::Result<()> {
     let _ = _cfg;
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let source_dir = resolve_source(cli, None)?;
     let home = resolve_home();
 

crates/dwell-cli/src/commands/apply.rs

@@ -10,7 +10,7 @@ pub fn run(
     force: bool,
 ) -> dwell_core::Result<()> {
     let _ = _cfg;
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let source_dir = resolve_source(cli, source)?;
     let home = resolve_home();
 

crates/dwell-cli/src/commands/deploy.rs

@@ -11,7 +11,7 @@ pub fn run(
     no_packages: bool,
     dry_run: bool,
 ) -> dwell_core::Result<()> {
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let source_dir = crate::commands::resolve_source(cli, source)?;
     let home = crate::commands::resolve_home();
 

crates/dwell-cli/src/commands/deps.rs

@@ -11,7 +11,7 @@ pub fn run(
     _cfg: &dwell_core::Config,
     action: crate::DepsCommand,
 ) -> dwell_core::Result<()> {
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
 
     match action {
         crate::DepsCommand::Scan { source } => cmd_scan(&out, source),

crates/dwell-cli/src/commands/diff.rs

@@ -9,7 +9,7 @@ pub fn run(
     source: Option<PathBuf>,
 ) -> dwell_core::Result<()> {
     let _ = _cfg;
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let source_dir = resolve_source(cli, source)?;
     let home = resolve_home();
 

crates/dwell-cli/src/commands/init.rs

@@ -14,7 +14,7 @@ pub fn run(
 ) -> dwell_core::Result<()> {
     let _ = _cfg;
     let _ = _remote_url;
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
 
     let source_dir = source.unwrap_or_else(|| {
         dirs::data_dir()

crates/dwell-cli/src/commands/module_cmd.rs

@@ -8,7 +8,7 @@ pub fn run(
     _cfg: &dwell_core::Config,
     action: crate::ModuleCommand,
 ) -> dwell_core::Result<()> {
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let reg = ModuleRegistry::new();
 
     match action {

crates/dwell-cli/src/commands/package.rs

@@ -17,7 +17,7 @@ pub fn run(
 
 /// Install all declared system packages.
 fn cmd_install(cli: &CliRef, cfg: &dwell_core::Config) -> dwell_core::Result<()> {
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let registry = dwell_package::PackageManagerRegistry::new();
 
     let backend = registry.detect().ok_or_else(|| {
@@ -65,7 +65,7 @@ fn cmd_install(cli: &CliRef, cfg: &dwell_core::Config) -> dwell_core::Result<()>
 
 /// List all installed packages per backend, marking declared ones with `*`.
 fn cmd_list(cli: &CliRef, cfg: &dwell_core::Config) -> dwell_core::Result<()> {
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let registry = dwell_package::PackageManagerRegistry::new();
     let declared: Vec<&str> = cfg.packages.system.iter().map(|s| s.as_str()).collect();
 
@@ -101,7 +101,7 @@ fn cmd_list(cli: &CliRef, cfg: &dwell_core::Config) -> dwell_core::Result<()> {
 
 /// Remove all declared packages via the first available backend.
 fn cmd_remove(cli: &CliRef, cfg: &dwell_core::Config) -> dwell_core::Result<()> {
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let registry = dwell_package::PackageManagerRegistry::new();
 
     let backend = registry.detect().ok_or_else(|| {
@@ -147,7 +147,7 @@ fn cmd_remove(cli: &CliRef, cfg: &dwell_core::Config) -> dwell_core::Result<()>
 
 /// Show package drift — declared vs installed.
 fn cmd_diff(cli: &CliRef, cfg: &dwell_core::Config) -> dwell_core::Result<()> {
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let registry = dwell_package::PackageManagerRegistry::new();
 
     let backend = registry.detect().ok_or_else(|| {

crates/dwell-cli/src/commands/reset.rs

@@ -15,7 +15,7 @@ pub fn run(
     source: Option<PathBuf>,
     dry_run: bool,
 ) -> dwell_core::Result<()> {
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let source_dir = crate::commands::resolve_source(cli, source)?;
     let home = crate::commands::resolve_home();
 

crates/dwell-cli/src/commands/setup.rs

@@ -95,7 +95,7 @@ pub fn run(
     _cfg: &dwell_core::Config,
     action: crate::SetupCommand,
 ) -> dwell_core::Result<()> {
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
 
     match action {
         crate::SetupCommand::Capture {

crates/dwell-cli/src/commands/status.rs

@@ -9,7 +9,7 @@ pub fn run(
     source: Option<PathBuf>,
 ) -> dwell_core::Result<()> {
     let _ = _cfg;
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let source_dir = resolve_source(cli, source)?;
 
     out.info(&format!("Checking status of {}", source_dir.display()));

crates/dwell-cli/src/commands/sync.rs

@@ -10,7 +10,7 @@ pub fn run(
     source: Option<PathBuf>,
     dry_run: bool,
 ) -> dwell_core::Result<()> {
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let source_dir = crate::commands::resolve_source(cli, source)?;
     let git_dir = source_dir.join(".git");
 

crates/dwell-cli/src/commands/watch.rs

@@ -9,7 +9,7 @@ pub fn run(
     source: Option<PathBuf>,
 ) -> dwell_core::Result<()> {
     let _ = _cfg;
-    let out = Output::new(cli.json, cli.verbose, cli.quiet);
+    let out = Output::new(cli.json, cli.verbose, cli.quiet, cli.log_level.clone());
     let source_dir = resolve_source(cli, source)?;
 
     out.info(&format!("Watching {}", source_dir.display()));

crates/dwell-cli/src/main.rs

@@ -32,6 +32,14 @@
     #[arg(long)]
     pub json: bool,
 
+    /// Log file path (default: stderr)
+    #[arg(long)]
+    pub log_file: Option<PathBuf>,
+
+    /// Log level override [possible values: error, warn, info, debug, trace]
+    #[arg(long)]
+    pub log_level: Option<String>,
+
     #[command(subcommand)]
     pub command: Commands,
 }
@@ -326,21 +334,40 @@
 fn main() {
     let cli = Cli::parse();
 
-    // Configure logging
-    let level = match cli.verbose {
-        0 => "warn",
-        1 => "info",
-        2 => "debug",
-        _ => "trace",
-    };
-
-    tracing_subscriber::fmt()
+    // Determine log level
+    let level = cli.log_level.clone().unwrap_or_else(|| {
+        match cli.verbose {
+            0 => if cli.quiet { "error" } else { "warn" },
+            1 => "info",
+            2 => "debug",
+            _ => "trace",
+        }.to_string()
+    });
+
+    // Configure tracing subscriber with optional file output
+    let builder = tracing_subscriber::fmt()
         .with_env_filter(format!("dwell={}", level))
-        .with_writer(std::io::stderr)
-        .without_time()
-        .init();
+        .with_target(false)
+        .without_time();
+
+    if let Some(ref log_path) = cli.log_file {
+        use std::fs::OpenOptions;
+        let file = OpenOptions::new()
+            .create(true)
+            .append(true)
+            .open(log_path)
+            .unwrap_or_else(|e| {
+                eprintln!("dwell: warning: cannot open log file {}: {}", log_path.display(), e);
+                // Fallback to stderr using /dev/null as a dummy that won't matter
+                std::fs::File::create("/dev/null").unwrap()
+            });
+        builder.with_writer(std::sync::Mutex::new(file)).init();
+    } else {
+        builder.with_writer(std::io::stderr).init();
+    }
 
     if let Err(e) = commands::run(cli) {
+        // Always print fatal errors to stderr regardless of log config
         eprintln!("dwell: error: {}", e);
         std::process::exit(1);
     }