feat: update execution commands to commit once per solution and enhance reranker model handling

ccw/src/core/routes/codexlens-routes.ts

@@ -1181,10 +1181,10 @@ export async function handleCodexLensRoutes(ctx: RouteContext): Promise<boolean>
     try {
       const venvStatus = await checkVenvStatus();
 
-      // Default reranker config
+      // Default reranker config (matches fastembed default)
       const rerankerConfig = {
-        backend: 'onnx',
-        model_name: 'cross-encoder/ms-marco-MiniLM-L-6-v2',
+        backend: 'fastembed',
+        model_name: 'Xenova/ms-marco-MiniLM-L-6-v2',
         api_provider: 'siliconflow',
         api_key_set: false,
         available_backends: ['onnx', 'api', 'litellm', 'legacy'],

ccw/src/templates/dashboard-js/views/api-settings.js

@@ -1076,7 +1076,8 @@ function renderProviderList() {
   var container = document.getElementById('provider-list');
   if (!container) return;
 
-  var providers = apiSettingsData.providers || [];
+  // Guard against null apiSettingsData
+  var providers = (apiSettingsData && apiSettingsData.providers) ? apiSettingsData.providers : [];
   var query = providerSearchQuery.toLowerCase();
 
   // Filter providers
@@ -1147,6 +1148,12 @@ function renderProviderDetail(providerId) {
   var container = document.getElementById('provider-detail-panel');
   if (!container) return;
 
+  // Guard against null apiSettingsData
+  if (!apiSettingsData || !apiSettingsData.providers) {
+    renderProviderEmptyState();
+    return;
+  }
+
   var provider = apiSettingsData.providers.find(function(p) { return p.id === providerId; });
   if (!provider) {
     renderProviderEmptyState();
@@ -1370,6 +1377,9 @@ function toggleModelGroup(series) {
     expandedModelGroups.add(series);
   }
 
+  // Guard against null apiSettingsData
+  if (!apiSettingsData || !apiSettingsData.providers) return;
+
   var provider = apiSettingsData.providers.find(function(p) { return p.id === selectedProviderId; });
   if (provider) {
     renderModelTree(provider);
@@ -1379,10 +1389,20 @@ function toggleModelGroup(series) {
 /**
  * Switch model tab (LLM / Embedding)
  */
-function switchModelTab(tab) {
+async function switchModelTab(tab) {
   activeModelTab = tab;
   expandedModelGroups.clear();
 
+  // Guard against null apiSettingsData or providers - try to load if not available
+  if (!apiSettingsData || !apiSettingsData.providers) {
+    console.warn('[API Settings] switchModelTab: loading data first...');
+    await loadApiSettings(true);
+    if (!apiSettingsData || !apiSettingsData.providers) {
+      console.error('[API Settings] Failed to load API settings data');
+      return;
+    }
+  }
+
   var provider = apiSettingsData.providers.find(function(p) { return p.id === selectedProviderId; });
   if (provider) {
     renderProviderDetail(selectedProviderId);

ccw/src/templates/dashboard-js/views/codexlens-manager.js

@@ -1693,9 +1693,14 @@ async function loadRerankerModelList() {
   try {
     // Get current reranker config
     var response = await fetch('/api/codexlens/reranker/config');
+    if (!response.ok) {
+      throw new Error('Failed to load reranker config: ' + response.status);
+    }
     var config = await response.json();
-    var currentModel = config.model_name || 'Xenova/ms-marco-MiniLM-L-6-v2';
-    var currentBackend = config.backend || 'fastembed';
+
+    // Handle API response format
+    var currentModel = config.model_name || config.result?.reranker_model || 'Xenova/ms-marco-MiniLM-L-6-v2';
+    var currentBackend = config.backend || config.result?.reranker_backend || 'fastembed';
 
     var html = '<div class="space-y-2">';
 
@@ -1713,8 +1718,19 @@ async function loadRerankerModelList() {
 
     // Show models for local backend only
     if (currentBackend === 'fastembed' || currentBackend === 'onnx') {
+      // Helper to match model names (handles different prefixes like Xenova/ vs cross-encoder/)
+      function modelMatches(current, target) {
+        if (!current || !target) return false;
+        // Exact match
+        if (current === target) return true;
+        // Match by base name (after last /)
+        var currentBase = current.split('/').pop();
+        var targetBase = target.split('/').pop();
+        return currentBase === targetBase;
+      }
+
       RERANKER_MODELS.forEach(function(model) {
-        var isActive = currentModel === model.name;
+        var isActive = modelMatches(currentModel, model.name);
         var statusIcon = isActive
           ? '<i data-lucide="check-circle" class="w-3.5 h-3.5 text-success"></i>'
           : '<i data-lucide="circle" class="w-3.5 h-3.5 text-muted"></i>';
@@ -1870,7 +1886,12 @@ async function loadGpuDevicesForModeSelector() {
   if (!gpuSelect) return;
 
   try {
-    var response = await fetch('/api/codexlens/gpu/devices');
+    var response = await fetch('/api/codexlens/gpu/list');
+    if (!response.ok) {
+      console.warn('[CodexLens] GPU list endpoint returned:', response.status);
+      gpuSelect.innerHTML = '<option value="auto">Auto</option>';
+      return;
+    }
     var result = await response.json();
 
     var html = '<option value="auto">Auto</option>';
@@ -3785,19 +3806,12 @@ async function checkIndexHealth() {
 
     var lastIndexTime = currentIndex.lastModified ? new Date(currentIndex.lastModified) : null;
 
-    // Get git commits since last index
+    // Estimate staleness based on time (git API not available)
     var commitsSince = 0;
-    try {
-      var gitResponse = await fetch('/api/git/commits-since?since=' + encodeURIComponent(currentIndex.lastModified || ''));
-      var gitData = await gitResponse.json();
-      commitsSince = gitData.count || 0;
-    } catch (gitErr) {
-      console.warn('[CodexLens] Could not get git history:', gitErr);
-      // Fallback: estimate based on time
-      if (lastIndexTime) {
-        var hoursSince = (Date.now() - lastIndexTime.getTime()) / (1000 * 60 * 60);
-        commitsSince = Math.floor(hoursSince / 2); // Rough estimate
-      }
+    if (lastIndexTime) {
+      var hoursSince = (Date.now() - lastIndexTime.getTime()) / (1000 * 60 * 60);
+      // Rough estimate: assume ~2 commits per hour on active projects
+      commitsSince = Math.floor(hoursSince / 2);
     }
 
     // Determine health status