Go-to-Symbol: fold kind+file into the visible label

The delegate renders only the label, so the symbol switcher's group
(kind+file) was invisible. Fold it into the label as
'Scope::name  —  kind file': the name leads so a name hit still ranks
first, while the kind and file become visible and filterable in the same
fuzzy query.

docs/PLAN.md

@@ -217,11 +217,13 @@ Therefore the palette is replaced, not extended, and the replacement is built on
     overflows ARG_MAX; paths relative to the root). Each `Symbol` carries
     name / file / line / kind / scope.
   - Wired into the plugin: **Alt+R** "Go to Symbol (project)" opens a third
-    PaletteWidget of the project's symbols (label = `Scope::name`, hint =
-    `kind  file`). Activation opens the file via `MainWindow::openUrl` and
-    jumps the cursor to the symbol's line (ctags 1-based → cursor 0-based).
-    Also in the M-x palette (`ollie:switch:symbol`) and reachable from a radial
-    by objectName `ollie_goto_symbol`.
+    PaletteWidget of the project's symbols. The label is
+    `Scope::name  —  kind file` — the name leads (so a name hit ranks first)
+    while the kind and file are both visible and filterable in the same query
+    (e.g. "method olliecommands"). Activation opens the file via
+    `MainWindow::openUrl` and jumps the cursor to the symbol's line (ctags
+    1-based → cursor 0-based). Also in the M-x palette (`ollie:switch:symbol`)
+    and reachable from a radial by objectName `ollie_goto_symbol`.
 
 ## Build and test
 

src/plugin/ollieplugin.cpp

@@ -559,19 +559,23 @@ void OllieView::showSymbolSwitcher()
         // resolved against m_symbolSwitcherRoot on activation.
         item.id = kSymbolPrefix + s.file + QLatin1Char('\t') + QString::number(s.line);
 
-        // Label: scope-qualified name so "Class::method" matches naturally.
+        // Label: scope-qualified name, then kind + file as visible provenance.
+        // The delegate renders only the label and FuzzyRanker scores against it,
+        // so folding provenance in keeps it both visible and filterable (e.g.
+        // "method olliecommands" narrows by name and file at once). The name
+        // leads, so a name hit scores highest and ranks first.
         QString label = s.name;
         if (!s.scope.isEmpty()) {
             label = s.scope + QStringLiteral("::") + s.name;
         }
-        item.label = label;
-
-        // Trailing hint: kind plus the file for provenance.
-        QString hint = s.kind;
+        QString suffix = s.kind;
         if (!s.file.isEmpty()) {
-            hint = hint.isEmpty() ? s.file : (s.kind + QStringLiteral("  ") + s.file);
+            suffix = suffix.isEmpty() ? s.file : (s.kind + QStringLiteral(" ") + s.file);
         }
-        item.group = hint;
+        if (!suffix.isEmpty()) {
+            label += QStringLiteral("  —  ") + suffix;
+        }
+        item.label = label;
 
         items.push_back(item);
     }