Implement and archive Phase 5 form designer

crates/tb-frontend/src/forms.rs

@@ -751,3 +751,17 @@ impl FormCatalog {
         false
     }
 }
+
+/// Tastenkombinationen, die der Forms-Host für Menü-Shortcuts liefert.
+pub fn menu_shortcuts() -> Vec<String> {
+    let mut out = vec![String::new()];
+    for prefix in ["", "Ctrl+", "Alt+", "Shift+", "Ctrl+Shift+"] {
+        for n in 1..=10 {
+            out.push(format!("{prefix}F{n}"));
+        }
+    }
+    for c in ('A'..='Z').filter(|c| *c != 'C') {
+        out.push(format!("Ctrl+{c}"));
+    }
+    out
+}