Fetch prices on page load and refresh on headline click

Remove the Refresh Prices button. Prices are fetched automatically on
page load, and clicking the headline triggers a re-fetch.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/clj/pmagnus/elprice/web/routes/ui.clj

@@ -100,21 +100,15 @@
       (price-table title prices)]]))
 
 (defn home [query-fn request]
+  (prices/fetch-and-save! query-fn)
   (page {:lang "en"}
-   [:h1 {:class "text-2xl font-bold text-gray-900"}
+   [:h1 {:class "text-2xl font-bold text-gray-900 cursor-pointer hover:text-blue-600 transition-colors"
+         :hx-post "/prices/fetch"
+         :hx-target "#price-panel"
+         :hx-swap "innerHTML"}
     "Electricity Prices"]
    [:p {:class "mt-1 text-sm text-gray-500"}
     "Day-ahead spot prices for DK1 (øre/kWh)"]
-   [:button {:class "mt-4 rounded-lg bg-blue-600 px-4 py-2 text-white font-medium
-                     active:bg-blue-700 transition-colors"
-             :hx-post "/prices/fetch"
-             :hx-target "#price-panel"
-             :hx-swap "innerHTML"
-             :hx-indicator "#fetch-spinner"}
-    "Refresh Prices"]
-   [:span {:id "fetch-spinner"
-           :class "ml-2 htmx-indicator text-sm text-gray-400"}
-    "Loading..."]
    [:div {:id "price-panel"}
     (price-content :today (prices/get-today-prices query-fn))]))