feat(onboarding): input validation + editable targets (#160)

compliance-agent/src/pipeline/git.rs

@@ -80,7 +80,10 @@ impl GitOps {
 
     #[tracing::instrument(skip_all, fields(repo_name = %repo_name))]
     pub fn clone_or_fetch(&self, git_url: &str, repo_name: &str) -> Result<PathBuf, AgentError> {
-        let repo_path = self.base_path.join(repo_name);
+        // Names can contain slashes or other path-hostile characters (a target
+        // named after a repo path, say); collapse to one safe directory segment
+        // so the clone path never nests or breaks.
+        let repo_path = self.base_path.join(sanitize_repo_dir(repo_name));
 
         if repo_path.exists() {
             tracing::info!("fetching updates for existing repo");
@@ -253,3 +256,46 @@ pub struct DiffFile {
     pub path: String,
     pub hunks: String,
 }
+
+/// Collapse a repository name into a single filesystem-safe directory segment.
+/// Names may carry slashes or other path-hostile characters (a target named
+/// after a repo path, for instance); those would otherwise nest or break the
+/// clone path, so map anything outside `[A-Za-z0-9._-]` to `_`.
+fn sanitize_repo_dir(name: &str) -> String {
+    let mapped: String = name
+        .chars()
+        .map(|c| {
+            if c.is_ascii_alphanumeric() || c == '-' || c == '_' || c == '.' {
+                c
+            } else {
+                '_'
+            }
+        })
+        .collect();
+    let trimmed = mapped.trim_matches(|c| c == '.' || c == '_');
+    if trimmed.is_empty() {
+        "repo".to_string()
+    } else {
+        trimmed.to_string()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::sanitize_repo_dir;
+
+    #[test]
+    fn sanitizes_path_hostile_names() {
+        assert_eq!(
+            sanitize_repo_dir("zephyr-example-app"),
+            "zephyr-example-app"
+        );
+        assert_eq!(
+            sanitize_repo_dir("ChristianRinn/bare_metal_stm32f411xe"),
+            "ChristianRinn_bare_metal_stm32f411xe"
+        );
+        assert_eq!(sanitize_repo_dir("../../etc/passwd"), "etc_passwd");
+        assert_eq!(sanitize_repo_dir("a b:c"), "a_b_c");
+        assert_eq!(sanitize_repo_dir("///"), "repo");
+    }
+}