fix(xtask): run verification from workspace root

hemx-xtask/src/main.rs

@@ -1365,7 +1365,7 @@ impl Step {
     fn run(&self, budget: &Budget) -> Result<(), ExitCode> {
         eprintln!("\n==> {}", self.name);
         let mut command = Command::new(self.tool);
-        command.args(&self.args);
+        command.current_dir(workspace_root()).args(&self.args);
         if self.tool == "cargo" {
             command.env("CARGO_BUILD_JOBS", budget.jobs.to_string());
             command.env(
@@ -1386,6 +1386,13 @@ impl Step {
     }
 }
 
+fn workspace_root() -> PathBuf {
+    PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+        .parent()
+        .expect("hemx-xtask must be a workspace member")
+        .to_owned()
+}
+
 fn env_usize(key: &str) -> Option<usize> {
     env::var(key).ok()?.parse().ok()
 }
@@ -1466,11 +1473,17 @@ mod tests {
     use super::{
         android_twa_release_json, create_app_scaffold, create_mobile_app_scaffold,
         create_workout_app, mobile_external_blockers, origin_host, verify_workout_mobile_release,
-        workout_mobile_manifest, write_workout_mobile_release, Budget, WorkoutMobileConfig,
+        workout_mobile_manifest, workspace_root, write_workout_mobile_release, Budget,
+        WorkoutMobileConfig,
     };
     use std::fs;
     use std::path::PathBuf;
 
+    #[test]
+    fn verification_steps_resolve_the_workspace_independent_of_caller_directory() {
+        assert!(workspace_root().join("Cargo.toml").is_file()); // req: test/004
+    }
+
     #[test]
     fn budget_is_capped_by_available_memory() {
         // req: test/004