cover: preferito custom (comune) con coordinate salvate (preferredLat/Lon); riga eventi: colonna Alta/Bassa con fade (mai sovrapposta)

qml/cover/CoverPage.qml

@@ -41,6 +41,7 @@ CoverBackground {
 
     function refresh() {
         var pref = appSettings.preferredPort
+        console.log("[tide] cover refresh, pref:", pref)
         if (pref === "") {
             portLabel.text = qsTr("No port selected")
             nextLabel.text = ""
@@ -50,6 +51,13 @@ CoverBackground {
         for (var i = 0; i < Tides.PORTS.length; i++) {
             if (Tides.PORTS[i][0] === pref) { p = Tides.PORTS[i]; break }
         }
+        // preferito custom (comune): ricostruisci le costanti da lat/lon
+        if (!p && appSettings.preferredLat >= 0) {
+            var np = Tides.nearestPort(appSettings.preferredLat, appSettings.preferredLon)
+            var cost = np.km < 222 ? np.port[4].slice()
+                                   : Tides.synthConst(appSettings.preferredLat, appSettings.preferredLon)
+            p = [pref, "", appSettings.preferredLat, appSettings.preferredLon, cost, "pref"]
+        }
         if (!p) { portLabel.text = qsTr("No port selected"); nextLabel.text = ""; return }
         portLabel.text = p[0]
         var ex = Tides.extrema(p, new Date(), 1)