Hide branch steps in parallel item F1 panel

The 'branches' list shown in the F1 panel previously contained each
branch's full 'steps', duplicating what is already visible in the test
tree. Strip 'steps' inside each branch dict while keeping 'branches'
itself so per-branch attributes (name, wait_for, condition, ...) stay
visible.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/testium/interpreter/test_items/test_item_parallel.py

@@ -95,8 +95,10 @@ class TestItemParallel(TestItemContainer):
                 dict_item.get("seq_filename", ""),
             )
         # Inject a synthetic 'steps' key so load_test_recursively can load branches
-        # as TestItemParallelBranch children. The original 'branches' key is kept
-        # for display in the GUI (it's included by _filter_dict_item, 'steps' is not).
+        # as TestItemParallelBranch children. The base class' _filter_dict_item
+        # drops 'steps'; we also drop 'branches' (overridden below) so the F1
+        # panel shows only the parallel's own attributes, not the duplicated
+        # tree of branches/steps already displayed in the test tree.
         dict_item["steps"] = [{"parallel_branch": b} for b in branches]
 
         super().__init__(cst.TYPE_PARALLEL, dict_item, parent, status_queue, filename=filename)
@@ -107,6 +109,22 @@ class TestItemParallel(TestItemContainer):
                 self.seqFilename(),
             )
 
+    def _filter_dict_item(self, dict_item):
+        c = super()._filter_dict_item(dict_item)
+        # Keep 'branches' so the F1 panel shows the branch list and their
+        # per-branch attributes (name, wait_for, condition, ...), but strip
+        # the 'steps' inside each branch — the steps are already visible as
+        # children in the test tree and would just duplicate the information.
+        if isinstance(c, dict) and isinstance(c.get("branches"), list):
+            stripped = []
+            for b in c["branches"]:
+                if isinstance(b, dict):
+                    stripped.append({k: v for k, v in b.items() if k != "steps"})
+                else:
+                    stripped.append(b)
+            c["branches"] = stripped
+        return c
+
     def _stop_branch_recursively(self, item):
         item.stop()
         for i in range(item.childCount()):