refactor(multiboards): remove time filter system end-to-end

Backend retention now keeps only recent posts, making the time filter UI
and newerThan filtering obsolete. Deleted use-time-filter hook, canonical
multiboard routes only, removed footer suggestions, dropped i18n keys.

src/lib/utils/__tests__/route-utils.test.ts

@@ -1,15 +1,11 @@
 import { describe, it, expect } from 'vitest';
-import { normalizeMultiboardFeedPath } from '../route-utils';
+import { isFeedRoute, normalizeMultiboardFeedPath } from '../route-utils';
 
 describe('normalizeMultiboardFeedPath', () => {
   it('normalizes /all/3 -> /all', () => {
     expect(normalizeMultiboardFeedPath('/all/3')).toBe('/all');
   });
 
-  it('normalizes /all/1w/3 -> /all/1w', () => {
-    expect(normalizeMultiboardFeedPath('/all/1w/3')).toBe('/all/1w');
-  });
-
   it('normalizes /subs/2/settings -> /subs/settings', () => {
     expect(normalizeMultiboardFeedPath('/subs/2/settings')).toBe('/subs/settings');
   });
@@ -21,9 +17,28 @@ describe('normalizeMultiboardFeedPath', () => {
   it('leaves non-multiboard paths unchanged', () => {
     expect(normalizeMultiboardFeedPath('/biz')).toBe('/biz');
     expect(normalizeMultiboardFeedPath('/biz/3')).toBe('/biz/3');
-    expect(normalizeMultiboardFeedPath('/biz/1w/2')).toBe('/biz/1w/2');
     expect(normalizeMultiboardFeedPath('/biz/catalog/4')).toBe('/biz/catalog/4');
     expect(normalizeMultiboardFeedPath('/pending/0')).toBe('/pending/0');
     expect(normalizeMultiboardFeedPath('/')).toBe('/');
   });
 });
+
+describe('isFeedRoute', () => {
+  it('returns true for canonical multiboard paths', () => {
+    expect(isFeedRoute('/all')).toBe(true);
+    expect(isFeedRoute('/all/catalog')).toBe(true);
+    expect(isFeedRoute('/subs')).toBe(true);
+    expect(isFeedRoute('/subs/catalog')).toBe(true);
+    expect(isFeedRoute('/mod')).toBe(true);
+    expect(isFeedRoute('/mod/catalog')).toBe(true);
+    expect(isFeedRoute('/all/3')).toBe(true);
+    expect(isFeedRoute('/subs/2')).toBe(true);
+    expect(isFeedRoute('/mod/catalog/4')).toBe(true);
+  });
+
+  it('returns false for time-filter paths', () => {
+    expect(isFeedRoute('/all/24h')).toBe(false);
+    expect(isFeedRoute('/subs/catalog/1w')).toBe(false);
+    expect(isFeedRoute('/all/1w/3')).toBe(false);
+  });
+});

src/lib/utils/route-utils.ts

@@ -109,19 +109,12 @@ export const isFeedRoute = (pathname: string): boolean => {
   if (normalizedPath.includes('/modqueue')) return false;
 
   const pathWithoutSettings = normalizedPath.replace(/\/settings$/, '');
-
-  if (pathWithoutSettings.startsWith('/all')) return true;
-  if (pathWithoutSettings.startsWith('/subs')) return true;
-  if (pathWithoutSettings.startsWith('/mod')) return true;
-
   const segments = pathWithoutSettings.split('/').filter(Boolean);
   if (segments.length >= 1) {
     if (segments.length === 1) return true;
     if (segments.length === 2 && segments[1] === 'catalog') return true;
-    if (segments.length === 2 && (/^(?:\d+(?:h|d|w|m|y)|all)$/.test(segments[1]) || /^([1-9]|10)$/.test(segments[1]))) return true;
-    if (segments.length === 3 && segments[1] === 'catalog' && /^(?:\d+(?:h|d|w|m|y)|all)$/.test(segments[2])) return true;
-    if (segments.length === 3 && /^(?:\d+(?:h|d|w|m|y)|all)$/.test(segments[1]) && /^([1-9]|10)$/.test(segments[2])) return true;
-    if (segments.length === 2 && segments[0] !== 'all' && segments[0] !== 'subs' && segments[0] !== 'mod' && /^([1-9]|10)$/.test(segments[1])) return true;
+    if (segments.length === 2 && /^([1-9]|10)$/.test(segments[1])) return true;
+    if (segments.length === 3 && segments[1] === 'catalog' && /^([1-9]|10)$/.test(segments[2])) return true;
   }
 
   return false;
@@ -163,8 +156,8 @@ function isMultiboardFeedPath(pathname: string): boolean {
 }
 
 /**
- * Normalize multiboard feed paths by removing trailing page-number segments (1–10),
- * while preserving /settings and valid time-filter segments.
+ * Normalize multiboard feed paths by removing trailing page-number segments (1–10)
+ * and preserving /settings.
  * Non-multiboard paths are returned unchanged.
  */
 export const normalizeMultiboardFeedPath = (pathname: string): string => {

src/lib/utils/view-utils.ts

@@ -3,7 +3,6 @@ export type ParamsType = {
   boardIdentifier?: string;
   commentCid?: string;
   subplebbitAddress?: string; // deprecated, kept for backward compatibility
-  timeFilterName?: string;
 };
 
 export const isAllView = (pathname: string): boolean => {
@@ -30,7 +29,7 @@ export const isBoardView = (pathname: string, params: ParamsType): boolean => {
 };
 
 export const isCatalogView = (pathname: string, params: ParamsType): boolean => {
-  const { boardIdentifier, subplebbitAddress, timeFilterName } = params;
+  const { boardIdentifier, subplebbitAddress } = params;
   const identifier = boardIdentifier || subplebbitAddress;
   const decodedPathname = decodeURIComponent(pathname);
 
@@ -38,16 +37,10 @@ export const isCatalogView = (pathname: string, params: ParamsType): boolean =>
     (identifier && (decodedPathname === `/${identifier}/catalog` || decodedPathname === `/${identifier}/catalog/settings`)) ||
     decodedPathname === `/all/catalog` ||
     decodedPathname === `/all/catalog/settings` ||
-    decodedPathname === `/all/catalog/${timeFilterName}` ||
-    decodedPathname === `/all/catalog/${timeFilterName}/settings` ||
     decodedPathname === `/subs/catalog` ||
     decodedPathname === `/subs/catalog/settings` ||
-    decodedPathname === `/subs/catalog/${timeFilterName}` ||
-    decodedPathname === `/subs/catalog/${timeFilterName}/settings` ||
     decodedPathname === `/mod/catalog` ||
-    decodedPathname === `/mod/catalog/settings` ||
-    decodedPathname === `/mod/catalog/${timeFilterName}` ||
-    decodedPathname === `/mod/catalog/${timeFilterName}/settings`
+    decodedPathname === `/mod/catalog/settings`
   );
 };
 
@@ -83,17 +76,7 @@ export const isSettingsView = (pathname: string, params: ParamsType): boolean =>
 };
 
 export const isSubscriptionsView = (pathname: string, params: ParamsType): boolean => {
-  const { timeFilterName } = params;
-  return (
-    pathname === '/subs' ||
-    pathname === '/subs/settings' ||
-    pathname === `/subs/${timeFilterName}` ||
-    pathname === `/subs/${timeFilterName}/settings` ||
-    pathname === '/subs/catalog' ||
-    pathname === '/subs/catalog/settings' ||
-    pathname === `/subs/catalog/${timeFilterName}` ||
-    pathname === `/subs/catalog/${timeFilterName}/settings`
-  );
+  return pathname === '/subs' || pathname === '/subs/settings' || pathname === '/subs/catalog' || pathname === '/subs/catalog/settings';
 };
 
 export const isNotFoundView = (pathname: string, params: ParamsType): boolean => {