fix: skip trust check for plain .tool-versions in task list

e2e/tasks/test_tool_versions_trust

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+# .tool-versions files can't define tasks, so plain ones should never
+# trigger a trust error in the task runner.
+
+export MISE_TRUSTED_CONFIG_PATHS=""
+
+echo "tiny 3.1.0" >.tool-versions
+assert_not_contains "MISE_YES=0 mise task ls" "not trusted"

src/config/mod.rs

@@ -1096,7 +1096,7 @@ fn all_dirs_from(start_dir: &Path) -> Result<Vec<PathBuf>> {
 }
 
 /// Returns true if a path is a .tool-versions file (lower priority for writes)
-fn is_tool_versions_file(p: &Path) -> bool {
+pub(crate) fn is_tool_versions_file(p: &Path) -> bool {
     p.file_name()
         .is_some_and(|f| f.to_string_lossy().ends_with(".tool-versions"))
 }

src/task/task_list.rs

@@ -120,15 +120,19 @@ async fn err_no_task(config: &Config, name: &str) -> Result<()> {
         }
 
         // Check if there are any untrusted config files in the current directory
-        // that might contain tasks
+        // that might contain tasks.
         if let Some(cwd) = &*dirs::CWD {
             use crate::config::config_file::{config_trust_root, is_trusted};
-            use crate::config::config_files_in_dir;
+            use crate::config::{config_files_in_dir, is_tool_versions_file};
 
             let config_files = config_files_in_dir(cwd);
             let untrusted_configs: Vec<_> = config_files
                 .iter()
-                .filter(|p| !is_trusted(&config_trust_root(p)) && !is_trusted(p))
+                .filter(|p| {
+                    !is_tool_versions_file(p)
+                        && !is_trusted(&config_trust_root(p))
+                        && !is_trusted(p)
+                })
                 .collect();
 
             if !untrusted_configs.is_empty() {