pregenerate location names and fix location forwarding

src/routes/weather/compare/[location]/ModelPictogramTimeline.svelte

@@ -98,7 +98,7 @@
 						>
 							Model
 						</th>
-						{#each filteredIndices as idx, i}
+						{#each filteredIndices as idx, i (idx)}
 							{@const ts = timestamps[idx]}
 							{@const isNewDay = checkNewDay(i, ts)}
 							<th
@@ -115,14 +115,14 @@
 					</tr>
 				</thead>
 				<tbody>
-					{#each displayModels as model}
+					{#each displayModels as model (model)}
 						<tr class="group hover:bg-muted/10">
 							<td
 								class="sticky left-0 z-10 border-b border-r border-border bg-card p-2 text-[11px] font-semibold group-hover:bg-muted/20"
 							>
 								{model.replace(/_/g, ' ')}
 							</td>
-							{#each filteredIndices as idx, i}
+							{#each filteredIndices as idx, i (idx)}
 								{@const ts = timestamps[idx]}
 								{@const codes = hourlyFlat[`weather_code_${model}`]}
 								{@const code = codes ? codes[idx] : 0}