Add dashboard UI foundation and map export workflow

web/src/css/index.css

@@ -1,6 +1,9 @@
+:root{--text:#182230;--text-muted:#667085;--surface:#fff;--surface-soft:#f8fafc;--surface-strong:#edf1f5;--border:#dfe5ec;--accent:#2477c5;--accent-strong:#185a98;--accent-soft:#91bfe8;--accent-pale:#e9f3fc;--success:#269368;--danger:#c84646;--shadow-sm:0 5px 16px rgba(16,24,40,.05);--shadow-md:0 16px 36px rgba(16,24,40,.10)}
+*{box-sizing:border-box}
 body {
   margin: 0;
-  font-family: Arial, sans-serif;
+  font-family: Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
+  color:var(--text);background:#f3f5f8;
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
 }
@@ -31,17 +34,14 @@ thead {
   font-display: swap;
 }
 
-.primary {
-  background-color: #ffcc66;
-  border: none;
-  padding: 5px 10px;
+.primary,.secondary,button {
+  min-height:38px;background-color:var(--surface-strong);border:1px solid transparent;border-radius:9px;padding:8px 14px;
   cursor: pointer;
   font-family: 'Rubik', sans-serif;
 }
 
-.primary:hover {
-  background-color: #ffb92d;
-}
+.primary{background:var(--accent);color:#fff}.primary:hover{background:var(--accent-strong)}
+input[type=text],input[type=date],input[type=datetime-local],select{min-height:38px;padding:7px 10px;border:1px solid #cfd7e2;border-radius:8px;background:#fff}button:disabled,input:disabled{cursor:not-allowed;opacity:.48}.appContent{min-height:calc(100vh - 73px)}
 
 table td {
   padding: 3px 7px;
@@ -81,4 +81,5 @@ table tr:hover {
   display: grid;
   grid-template-columns: 1fr 2fr;
   gap: 10px;
-}
+}
+.weatherIconStub{position:fixed!important;width:1px;height:1px;overflow:hidden;opacity:0;pointer-events:none}