Small fixes

frontend/src/lib/crime-filter.ts

@@ -100,9 +100,10 @@ export function getSpecificCrimeFilterMeta(features: FeatureMeta[]): FeatureMeta
     step: 1,
     description:
       'Violence, burglary, robbery, drugs, shoplifting, vehicle crime, anti-social behaviour, public order, theft, and other crime types',
-    detail: 'Filter by one street-level crime category at a time using yearly averages per LSOA.',
+    detail:
+      'Filter by one street-level crime category at a time using an area-normalised crime density near each postcode (not a count of incidents per year).',
     source: 'crime',
-    suffix: '/yr',
+    suffix: '',
   };
 }
 

frontend/src/lib/travel-params.ts

@@ -42,10 +42,12 @@ export function dedupeTravelTimeEntries(entries: TravelTimeEntry[]): TravelTimeE
       label: existing.label || entry.label,
       timeRange: mergeTimeRanges(existing.timeRange, entry.timeRange),
       useBest: existing.useBest || entry.useBest,
-      // noChange/noBuses are part of the dedupe key, so for two entries to
-      // collide here they must already have matching flags. Carry them through
-      // explicitly so unset (undefined) doesn't clobber set (false/true).
+      // noChange/oneChange/noBuses are part of the dedupe key, so for two
+      // entries to collide here they must already have matching flags. Carry
+      // them through explicitly so unset (undefined) doesn't clobber set
+      // (false/true).
       noChange: existing.noChange ?? entry.noChange,
+      oneChange: existing.oneChange ?? entry.oneChange,
       noBuses: existing.noBuses ?? entry.noBuses,
     };
   }

frontend/src/lib/url-state.test.ts

@@ -49,6 +49,7 @@ describe('url-state', () => {
         timeRange: [0, 30],
         useBest: true,
         noChange: false,
+        oneChange: false,
         noBuses: false,
       },
     ]);
@@ -118,6 +119,7 @@ describe('url-state', () => {
         timeRange: [10, 45],
         useBest: false,
         noChange: false,
+        oneChange: false,
         noBuses: false,
       },
     ]);

frontend/src/lib/url-state.ts

@@ -304,9 +304,9 @@ export function parseUrlState(): UrlState {
   // Travel time: repeated `tt` params
   // Format: serverMode:slug:label[:b][:min:max]
   // serverMode is one of: car | bicycle | walking | transit | transit-no-bus
-  // | transit-no-change | transit-no-change-no-bus. transit-one-change[-no-bus]
-  // variants are server-side only and will cause the entry to be dropped here
-  // (parseServerMode returns null) so we don't silently broaden the user's filter.
+  // | transit-no-change | transit-no-change-no-bus | transit-one-change
+  // | transit-one-change-no-bus. Unknown modes cause the entry to be dropped
+  // here (parseServerMode returns null) so we don't silently broaden the filter.
   const ttParams = params.getAll('tt');
   if (ttParams.length > 0) {
     const entries: TravelTimeEntry[] = [];
@@ -337,6 +337,7 @@ export function parseUrlState(): UrlState {
         timeRange,
         useBest,
         noChange: parsedMode.noChange,
+        oneChange: parsedMode.oneChange,
         noBuses: parsedMode.noBuses,
       });
     }