fix(js): restore disabled controls after pending

Remember each control's pre-request disabled state and keep a small pending count so data-slhx-disable-while-pending does not accidentally enable controls that were disabled before the request.

req: convention/007

slhx-js/runtime/slhx.js

@@ -8,6 +8,7 @@
   const pending = new WeakMap();
   const queues = new WeakMap();
   const timers = new WeakMap();
+  const disabledStates = new WeakMap();
   const sseSources = new WeakMap();
   const atomStores = new WeakMap();
   const dragKeys = new WeakMap();
@@ -77,7 +78,23 @@
       const controls = [];
       if (isDisableControl(el)) controls.push(el);
       forEachElement(el, (child) => { if (isDisableControl(child)) controls.push(child); });
-      controls.forEach((c) => { c.disabled = on; });
+      controls.forEach((c) => toggleDisabled(c, on));
+    }
+  }
+
+  function toggleDisabled(control, on) {
+    const state = disabledStates.get(control);
+    if (on) {
+      if (state) state.count += 1;
+      else disabledStates.set(control, { count: 1, disabled: control.disabled });
+      control.disabled = true;
+      return;
+    }
+    if (!state) return;
+    state.count -= 1;
+    if (state.count <= 0) {
+      control.disabled = state.disabled;
+      disabledStates.delete(control);
     }
   }
 

slhx-js/tests/runtime.rs

@@ -61,7 +61,11 @@ fn runtime_toggles_pending_conventions_around_requests() {
     assert!(source.contains("el.hasAttribute(\"data-slhx-disable-while-pending\")"));
     assert!(source.contains("if (isDisableControl(el)) controls.push(el)"));
     assert!(source.contains("forEachElement(el, (child) => { if (isDisableControl(child)) controls.push(child); })"));
-    assert!(source.contains("c.disabled = on"));
+    assert!(source.contains("const disabledStates = new WeakMap()"));
+    assert!(source.contains("function toggleDisabled(control, on)"));
+    assert!(source.contains("else disabledStates.set(control, { count: 1, disabled: control.disabled })"));
+    assert!(source.contains("control.disabled = state.disabled"));
+    assert!(source.contains("controls.forEach((c) => toggleDisabled(c, on))"));
     assert!(source.contains("showPending(target, true)"));
     assert!(source.contains("showPending(target, false)"));
 }