fix: vergilius fnptr import, remove tab pin, flatten workspace tree, middle-click close

- Fix vergilius_to_rcx.py to detect function pointer syntax (*Name)(params) and emit FuncPtr64
- Re-fetch 85 structs to recover proper field names (697/716 fixed)
- Remove pin button from dock tabs and all pin-related context menu items
- Fix newClass() creating duplicate tabs
- Set workspace tree font to match tab bar (size 10)
- Flatten workspace tree: remove redundant Project group node (VS Code Explorer style)
- Add middle-click to close dock widget tabs
- Allow type chooser to show cross-doc types for root nodes

tools/vergilius_to_rcx.py

@@ -341,6 +341,19 @@ def parse_field_line(line, offset, parent_id, ids, struct_registry):
     line = re.sub(r'\bvolatile\b', '', line).strip()
     line = re.sub(r'\s+', ' ', line)
 
+    # Check for function pointer: RETURN_TYPE (*NAME)(PARAMS)
+    fnptr_m = re.search(r'\(\*\s*(\w+)\s*\)', line)
+    if fnptr_m:
+        field_name = fnptr_m.group(1)
+        node_id = ids.alloc()
+        return {
+            'id': str(node_id),
+            'kind': 'FuncPtr64',
+            'name': field_name,
+            'offset': offset,
+            'parentId': str(parent_id),
+        }
+
     # Check for struct/union keyword prefix
     keyword = None
     m = re.match(r'^(struct|union|enum)\s+(.+)', line)