feat(setup): enhance loader with tool installer and config isolation

AGENTS.md

@@ -76,6 +76,7 @@ src/
     nupm.rs            — `numan nupm status|inspect|import|diff`: nupm discovery + import + drift (Phase 6.1–6.3)
     completions.rs     — `numan completions <shell>`: install by default (mkdir+write); `--print` for stdout (Phase 7.3)
     setup.rs           — `numan setup nu [VERSION]|remove|path|use <path>` + `setup loader`: Nushell bootstrap + nushell-loader install
+    setup_tools.rs     — CLI shell tool presets + GitHub release binary installer (starship, zoxide, carapace, atuin, mise, direnv, oh-my-posh)
     try_cmd.rs         — `numan try <owner/name[@version]> [--no-activate]`: attempt a package for current Nu; explain compatible managed Nu versions if incompatible
     use_cmd.rs         — `numan use <version>|latest|list`: activates a previously installed managed Nu version (no auto-download); cross-minor leave/teardown (modules then plugins) + restore (plugins then modules) via activation profiles; same-target is restore-only; writes the active-version marker after a PreMutation snapshot under the root mutation lock
     activation_switch.rs — shared leave/restore orchestration for `numan use` (lower-level lifecycle, no profile-sync wrappers)

assets/nushell-loader/loader.nu

@@ -4,40 +4,55 @@
 # Installed by `numan setup loader`. Re-run with --force to update.
 
 let autoload_dir: path = $nu.data-dir | path join "vendor/autoload"
-
 mkdir $autoload_dir
 
-# Place init commands here, in the following format:
-# let aidnem_loader_configs = [
-#   {name: 'starship', command: "starship init nu" }
-#   {name: 'zoxide', command: "zoxide init nushell" }
-#   {name: 'carapace', command: "carapace _carapace nushell"}
-# ]
-let aidnem_loader_configs: list<record> = []
+# Configuration is loaded from `loader-config.nu` in the same directory as loader.nu
+let loader_config_file = ($nu.config-path | path dirname | path join 'loader-config.nu')
+
+let aidnem_loader_configs: list<record> = if ($loader_config_file | path exists) {
+  source $loader_config_file
+  $aidnem_loader_configs
+} else {
+  []
+}
 
-def _aidnem_loader_get_file_from_name [name] {
+def _aidnem_loader_get_file_from_name [name: string] {
   { parent: $autoload_dir, stem: $name, extension: 'nu' } | path join
 }
 
 for item in $aidnem_loader_configs {
   let target = _aidnem_loader_get_file_from_name $item.name
   if not ($target | path exists) {
-    print $"[Aidnem Loader] File not found for ($item.name), generating it now."
-    print $"[Aidnem Loader] Running `($item.command) | save ($target)`"
-    nu -n -c $item.command | save $target
+    print $"[Aidnem Loader] Generating cache for ($item.name)..."
+    try {
+      let res = (nu -n -c $item.command | complete)
+      if $res.exit_code == 0 and not ($res.stdout | is-empty) {
+        $res.stdout | save -f $target
+        print $"[Aidnem Loader] Successfully cached ($item.name) -> ($target)"
+      } else {
+        print -e $"[Aidnem Loader] Warning: Failed to generate ($item.name) (exit code ($res.exit_code))"
+        if not ($res.stderr | is-empty) {
+          print -e $"[Aidnem Loader] ($res.stderr)"
+        }
+      }
+    } catch { |err|
+      print -e $"[Aidnem Loader] Error generating ($item.name): ($err.msg)"
+    }
   }
 }
 
-def _aidnem_loader_completer [context: string, position: int]: nothing -> list {
-  $aidnem_loader_configs | get name
+def _aidnem_loader_completer [context: string, position: int]: nothing -> list<string> {
+  $aidnem_loader_configs | get -i name | default []
 }
 
 # Remove a cached init file so that it will be regenerated on next startup.
-# Configs are listed in $aidnem_loader_configs
+# Configs are listed in $aidnem_loader_configs (from loader-config.nu)
 def aidnem_loader_remove_file [...names: string@_aidnem_loader_completer]: nothing -> nothing {
   for name in $names {
     let target = _aidnem_loader_get_file_from_name $name
-    print $"[Aidnem Loader] Removing ($target)"
-    rm $target
+    if ($target | path exists) {
+      print $"[Aidnem Loader] Removing ($target)"
+      rm -f $target
+    }
   }
 }

src/cmd/mod.rs

@@ -16,6 +16,7 @@ pub mod remove;
 pub mod search;
 pub mod self_update;
 pub mod setup;
+pub mod setup_tools;
 pub mod snapshot;
 pub mod try_cmd;
 pub mod update;