Fix tooltips and error icons after config parsing

- Call updateTooltips() after clearAllTooltips() to restore tooltip attributes
- Add error icons to all input fields (context-length, kv-heads, head-size,
  num-heads, num-layers, parallel, full-attention, hf-model)
- Update showConfigErrors() to handle hf-model field correctly

js/app.js

@@ -597,6 +597,9 @@
       // Populate from config
       populateFromConfig(config);
       
+      // Update tooltips after clearing them
+      updateTooltips();
+      
       // Hide loading and set focus
       loadingIndicator.style.display = 'none';
       hfModelInput.focus();
@@ -628,7 +631,12 @@
   // Show config errors
   function showConfigErrors() {
     Object.keys(window.configErrors).forEach(fieldId => {
-      const errorIcon = document.querySelector(`#${fieldId} ~ .error-icon`);
+      let errorIcon;
+      if (fieldId === 'hf-model') {
+        errorIcon = document.querySelector('#hf-model + .error-icon');
+      } else {
+        errorIcon = document.querySelector(`#${fieldId} ~ .error-icon`);
+      }
       if (errorIcon) {
         errorIcon.style.display = 'inline-block';
         errorIcon.setAttribute('data-tooltip-ru', window.configErrors[fieldId]);