refactor(cli): sweep 15 bail("git X") sites to use git_run with context labels

crates/relicario-cli/src/commands/backup.rs

@@ -282,8 +282,7 @@ pub(super) fn cmd_backup_restore(input: PathBuf, target: PathBuf) -> Result<()>
         }
     } else {
         // No history bundled — start a fresh git repo.
-        let status = crate::helpers::git_command(&target, &["init"]).status()?;
-        if !status.success() { anyhow::bail!("git init failed"); }
+        crate::helpers::git_run(&target, &["init"], "backup restore: git init")?;
 
         // .gitignore — exclude reference image if present.
         if target.join("reference.jpg").exists() {