feat(ui): keyboard nav (Enter advances step) + yaml-health warning on launch

tools/command_builder/app.py

@@ -123,7 +123,21 @@ class Bridge:
             return {"ok": False, "error": f"LLM недоступен: {ex}"}
 
 
+def _check_yaml_health():
+    if not COMMANDS_YAML.exists():
+        return
+    try:
+        yaml_writer.load_yaml(COMMANDS_YAML)
+    except Exception as ex:
+        bak = COMMANDS_YAML.with_suffix(COMMANDS_YAML.suffix + ".bak")
+        msg = f"[command_builder] Не удалось разобрать {COMMANDS_YAML.name}: {ex}"
+        if bak.exists():
+            msg += f"\n[command_builder] Резервная копия доступна: {bak} — можно восстановить вручную."
+        print(msg, file=sys.stderr)
+
+
 def main():
+    _check_yaml_health()
     bridge = Bridge()
     index_path = WEB_DIR / "index.html"
     if not index_path.exists():

tools/command_builder/web/app.js

@@ -729,6 +729,17 @@
         document.addEventListener("keydown", (ev) => {
             if (ev.key === "Escape") {
                 if (state.step > 1) setStep(state.step - 1);
+                return;
+            }
+            if (ev.key === "Enter" && !ev.shiftKey && !ev.ctrlKey && !ev.altKey) {
+                const tag = (ev.target && ev.target.tagName) || "";
+                if (tag === "TEXTAREA") return;
+                if (tag === "BUTTON") return;
+                if (state.step < 4) {
+                    if (state.step === 2 && state.actionType) renderActionForm();
+                    setStep(state.step + 1);
+                    ev.preventDefault();
+                }
             }
         });
     }