feat: Add unified reader settings with local overrides (#2230)

* Add initial impl

* fix some format inconsistencies, add indicator in user settings when local is out of sync

* Fix sliders in user settings, unify constants and formatting

* address CodeRabbit suggestions

* add mobile implementation

* address coderabbit nitpicks

* fix responsiveness of the reader settings popover

* Move more of the web UI strings to i18n

* update translations for more coverage

* remove duplicate logic/definitions

* fix android font family

* add shared reading setting hook between web and mobile

* unify reader settings context for both web and mobile

* remove unused export

* address coderabbit suggestions

* fix tests

1 files changed, 8 insertions, 0 deletions

diff --git a/apps/mobile/lib/settings.ts b/apps/mobile/lib/settings.ts
index 40a33976..745c778d 100644
--- a/apps/mobile/lib/settings.ts
+++ b/apps/mobile/lib/settings.ts
@@ -2,6 +2,8 @@ import * as SecureStore from "expo-secure-store";
 import { z } from "zod";
 import { create } from "zustand";
 
+import { zReaderFontFamilySchema } from "@karakeep/shared/types/users";
+
 const SETTING_NAME = "settings";
 
 const zSettingsSchema = z.object({
@@ -16,6 +18,10 @@ const zSettingsSchema = z.object({
     .default("reader"),
   showNotes: z.boolean().optional().default(false),
   customHeaders: z.record(z.string(), z.string()).optional().default({}),
+  // Reader settings (local device overrides)
+  readerFontSize: z.number().int().min(12).max(24).optional(),
+  readerLineHeight: z.number().min(1.2).max(2.5).optional(),
+  readerFontFamily: zReaderFontFamilySchema.optional(),
 });
 
 export type Settings = z.infer<typeof zSettingsSchema>;
@@ -73,3 +79,5 @@ export default function useAppSettings() {
 
   return { ...settings, setSettings, load };
 }
+
+export { useSettings };