feat: load and cache Ollama show data per model with clickable model details

- Add GET /api/v1/models/{model_name}/show endpoint (proxy to Ollama /api/show)
- Worker now fetches show data for each model during model list sync
- Persist show details in localStorage under llm_monitor_models.showByModel
- Make model cards clickable to display cached show details in a dedicated panel
- Keep UI updates incremental without full page reload
- Add tests for show endpoint and OpenAPI path
- Update README and PRD with show-flow and click-card behavior

app/web/static/js/data-sync.worker.js

@@ -54,10 +54,49 @@ async function fetchModels() {
     }
 }
 
+// Recuperare dettagli show per un modello
+async function fetchModelShow(modelName) {
+    try {
+        const response = await fetch(`${API_BASE}/models/${encodeURIComponent(modelName)}/show`);
+        if (!response.ok) {
+            return null;
+        }
+        return await response.json();
+    } catch (error) {
+        console.error(`Error loading show data for model ${modelName}:`, error);
+        return null;
+    }
+}
+
+// Recuperare dettagli show per tutti i modelli
+async function fetchAllModelsShow(models) {
+    const showByModel = {};
+    const results = await Promise.allSettled(
+        models.map(async (model) => {
+            const showData = await fetchModelShow(model.name);
+            return { name: model.name, showData };
+        })
+    );
+
+    results.forEach((result) => {
+        if (result.status === "fulfilled" && result.value.showData) {
+            showByModel[result.value.name] = result.value.showData;
+        }
+    });
+
+    return showByModel;
+}
+
 // Sincronizzare i dati
 async function syncData() {
     const health = await fetchHealth();
     const modelsData = await fetchModels();
+
+    if (modelsData && modelsData.models.length > 0) {
+        modelsData.showByModel = await fetchAllModelsShow(modelsData.models);
+    } else if (modelsData) {
+        modelsData.showByModel = {};
+    }
     
     // Notificare il main thread
     // (il main thread gestisce localStorage)