feat(server): grant-scope org attachment write paths in pre-receive hook

crates/relicario-server/tests/org_hook.rs

@@ -79,3 +79,43 @@ fn extract_schema_version_errors_on_missing_field() {
 fn extract_schema_version_errors_on_garbage() {
     assert!(extract_schema_version("not json").is_err());
 }
+
+#[test]
+fn attachment_path_is_collection_scoped() {
+    assert_eq!(
+        classify_path("attachments/prod/a1b2c3d4e5f6a1b2/0011223344556677.enc"),
+        PathClass::Item { collection: "prod".to_string() }
+    );
+}
+
+#[test]
+fn attachment_wrong_segment_count_is_rejected() {
+    assert_eq!(
+        classify_path("attachments/prod/onlytwo.enc"),
+        PathClass::Rejected("attachments path must be attachments/<slug>/<item-id>/<att-id>.enc".to_string())
+    );
+}
+
+#[test]
+fn attachment_empty_or_dotted_slug_is_rejected() {
+    assert!(matches!(classify_path("attachments//item/att.enc"), PathClass::Rejected(_)));
+    assert!(matches!(classify_path("attachments/../item/att.enc"), PathClass::Rejected(_)));
+}
+
+#[test]
+fn attachments_prefix_alone_is_rejected_not_unrestricted() {
+    // `attachments/` with no slug/item/att segments must be Rejected, NOT fall
+    // through to Unrestricted — that fall-through was the authz gap this closes.
+    assert!(matches!(classify_path("attachments/"), PathClass::Rejected(_)));
+}
+
+#[test]
+fn attachment_att_id_segment_may_contain_dots() {
+    // The `.`-free guard applies to the slug (segment[0]) ONLY; the att-id segment
+    // legitimately carries `.enc` and is unharmed by additional dots — proving the
+    // guard is not a blanket "reject any dotted segment".
+    assert_eq!(
+        classify_path("attachments/eng/a1b2c3d4e5f6a1b2/00112233.aux.enc"),
+        PathClass::Item { collection: "eng".to_string() }
+    );
+}