feat: shared back navigation on detail pages

src/modules/lists/components/list-detail.tsx

@@ -3,6 +3,7 @@
 import { useRouter } from "next/navigation";
 import { Archive, Plus, Trash2 } from "lucide-react";
 import { useEffect, useRef, useState, useTransition } from "react";
+import { DetailBackLink } from "@/components/detail-back-link";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { ShareButton } from "@/components/share-button";
@@ -99,6 +100,7 @@ export function ListDetail({ initialList }: { initialList: ListDetailDto }) {
 
   return (
     <div className="mx-auto grid w-full max-w-3xl gap-4">
+      <DetailBackLink href="/lists" label="Lists" />
       <header className="flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between">
         <div className="min-w-0 flex items-center gap-3 flex-1">
           <Input

src/modules/notes/components/note-editor.tsx

@@ -3,6 +3,7 @@
 import { useRouter } from "next/navigation";
 import { Pin, PinOff, Save, Trash2 } from "lucide-react";
 import { useState, useTransition } from "react";
+import { DetailBackLink } from "@/components/detail-back-link";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
@@ -65,6 +66,7 @@ export function NoteEditor({ note }: { note?: NoteDto }) {
 
   return (
     <div className="mx-auto grid w-full max-w-6xl gap-4">
+      <DetailBackLink href="/notes" label="Notes" />
       <header className="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between">
         <div className="flex items-center gap-2 min-w-0 flex-1">
           {pinned && <Pin className="size-3.5 text-[var(--accent)]" />}