Add following feed + persist likes to localStorage

- Following tab in feed header (visible when logged in)
- Fetches kind 1 notes from followed pubkeys via NDK
- fetchFollows on login using NDK user.follows()
- fetchFollowFeed added to nostr lib
- Liked note IDs persisted in localStorage so likes survive refresh

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/feed/Feed.tsx

@@ -1,22 +1,78 @@
-import { useEffect } from "react";
+import { useEffect, useState } from "react";
 import { useFeedStore } from "../../stores/feed";
 import { useUserStore } from "../../stores/user";
+import { fetchFollowFeed } from "../../lib/nostr";
 import { NoteCard } from "./NoteCard";
 import { ComposeBox } from "./ComposeBox";
+import { NDKEvent } from "@nostr-dev-kit/ndk";
+
+type FeedTab = "global" | "following";
 
 export function Feed() {
   const { notes, loading, connected, error, connect, loadFeed } = useFeedStore();
-  const { loggedIn } = useUserStore();
+  const { loggedIn, follows } = useUserStore();
+
+  const [tab, setTab] = useState<FeedTab>("global");
+  const [followNotes, setFollowNotes] = useState<NDKEvent[]>([]);
+  const [followLoading, setFollowLoading] = useState(false);
 
   useEffect(() => {
     connect().then(() => loadFeed());
   }, []);
 
+  useEffect(() => {
+    if (tab === "following" && loggedIn && follows.length > 0) {
+      loadFollowFeed();
+    }
+  }, [tab, follows]);
+
+  const loadFollowFeed = async () => {
+    setFollowLoading(true);
+    try {
+      const events = await fetchFollowFeed(follows);
+      setFollowNotes(events);
+    } finally {
+      setFollowLoading(false);
+    }
+  };
+
+  const isFollowing = tab === "following";
+  const activeNotes = isFollowing ? followNotes : notes;
+  const isLoading = isFollowing ? followLoading : loading;
+
+  const filteredNotes = activeNotes.filter((event) => {
+    const c = event.content.trim();
+    return c.length > 0 && !c.startsWith("{") && !c.startsWith("[");
+  });
+
   return (
     <div className="h-full flex flex-col">
       {/* Header */}
       <header className="border-b border-border px-4 py-2.5 flex items-center justify-between shrink-0">
-        <h1 className="text-text text-sm font-medium tracking-wide">Global Feed</h1>
+        <div className="flex items-center gap-1">
+          <button
+            onClick={() => setTab("global")}
+            className={`px-3 py-1 text-[12px] transition-colors ${
+              tab === "global"
+                ? "text-text border-b-2 border-accent"
+                : "text-text-muted hover:text-text"
+            }`}
+          >
+            Global
+          </button>
+          {loggedIn && (
+            <button
+              onClick={() => setTab("following")}
+              className={`px-3 py-1 text-[12px] transition-colors ${
+                tab === "following"
+                  ? "text-text border-b-2 border-accent"
+                  : "text-text-muted hover:text-text"
+              }`}
+            >
+              Following
+            </button>
+          )}
+        </div>
         <div className="flex items-center gap-3">
           {connected && (
             <span className="text-success text-[11px] flex items-center gap-1">
@@ -25,11 +81,11 @@ export function Feed() {
             </span>
           )}
           <button
-            onClick={loadFeed}
-            disabled={loading}
+            onClick={isFollowing ? loadFollowFeed : loadFeed}
+            disabled={isLoading}
             className="text-text-muted hover:text-text text-[11px] px-2 py-1 border border-border hover:border-text-dim transition-colors disabled:opacity-40"
           >
-            {loading ? "loading…" : "refresh"}
+            {isLoading ? "loading…" : "refresh"}
           </button>
         </div>
       </header>
@@ -39,32 +95,29 @@ export function Feed() {
 
       {/* Feed */}
       <div className="flex-1 overflow-y-auto">
-        {error && (
+        {error && !isFollowing && (
           <div className="px-4 py-3 text-danger text-[12px] border-b border-border bg-danger/5">
             {error}
           </div>
         )}
 
-        {loading && notes.length === 0 && (
+        {isLoading && filteredNotes.length === 0 && (
           <div className="px-4 py-8 text-text-dim text-[12px] text-center">
-            Connecting to relays…
+            {isFollowing ? "Loading notes from people you follow…" : "Connecting to relays…"}
           </div>
         )}
 
-        {!loading && notes.length === 0 && !error && (
+        {!isLoading && filteredNotes.length === 0 && (
           <div className="px-4 py-8 text-text-dim text-[12px] text-center">
-            No notes yet.
+            {isFollowing && follows.length === 0
+              ? "You're not following anyone yet."
+              : "No notes yet."}
           </div>
         )}
 
-        {notes
-          .filter((event) => {
-            const c = event.content.trim();
-            return c.length > 0 && !c.startsWith("{") && !c.startsWith("[");
-          })
-          .map((event) => (
-            <NoteCard key={event.id} event={event} />
-          ))}
+        {filteredNotes.map((event) => (
+          <NoteCard key={event.id} event={event} />
+        ))}
       </div>
     </div>
   );

src/components/feed/NoteCard.tsx

@@ -20,7 +20,12 @@ export function NoteCard({ event }: NoteCardProps) {
 
   const { loggedIn } = useUserStore();
   const { openProfile } = useUIStore();
-  const [liked, setLiked] = useState(false);
+  const likedKey = "wrystr_liked";
+  const getLiked = () => {
+    try { return new Set<string>(JSON.parse(localStorage.getItem(likedKey) || "[]")); }
+    catch { return new Set<string>(); }
+  };
+  const [liked, setLiked] = useState(() => getLiked().has(event.id));
   const [liking, setLiking] = useState(false);
   const [showReply, setShowReply] = useState(false);
   const [replyText, setReplyText] = useState("");
@@ -34,6 +39,9 @@ export function NoteCard({ event }: NoteCardProps) {
     setLiking(true);
     try {
       await publishReaction(event.id, event.pubkey);
+      const liked = getLiked();
+      liked.add(event.id);
+      localStorage.setItem(likedKey, JSON.stringify(Array.from(liked)));
       setLiked(true);
     } finally {
       setLiking(false);

src/lib/nostr/client.ts

@@ -99,6 +99,23 @@ export async function publishNote(content: string): Promise<void> {
   await event.publish();
 }
 
+export async function fetchFollowFeed(pubkeys: string[], limit = 80): Promise<NDKEvent[]> {
+  if (pubkeys.length === 0) return [];
+  const instance = getNDK();
+
+  const filter: NDKFilter = {
+    kinds: [NDKKind.Text],
+    authors: pubkeys,
+    limit,
+  };
+
+  const events = await instance.fetchEvents(filter, {
+    cacheUsage: NDKSubscriptionCacheUsage.ONLY_RELAY,
+  });
+
+  return Array.from(events).sort((a, b) => (b.created_at ?? 0) - (a.created_at ?? 0));
+}
+
 export async function fetchUserNotes(pubkey: string, limit = 30): Promise<NDKEvent[]> {
   const instance = getNDK();
   const filter: NDKFilter = {

src/lib/nostr/index.ts

@@ -1 +1 @@
-export { getNDK, connectToRelays, fetchGlobalFeed, publishNote, publishReaction, publishReply, fetchUserNotes, fetchProfile } from "./client";
+export { getNDK, connectToRelays, fetchGlobalFeed, fetchFollowFeed, publishNote, publishReaction, publishReply, fetchUserNotes, fetchProfile } from "./client";

src/stores/user.ts

@@ -7,6 +7,7 @@ interface UserState {
   pubkey: string | null;
   npub: string | null;
   profile: any | null;
+  follows: string[];
   loggedIn: boolean;
   loginError: string | null;
 
@@ -14,12 +15,14 @@ interface UserState {
   loginWithPubkey: (pubkey: string) => Promise<void>;
   logout: () => void;
   fetchOwnProfile: () => Promise<void>;
+  fetchFollows: () => Promise<void>;
 }
 
 export const useUserStore = create<UserState>((set, get) => ({
   pubkey: null,
   npub: null,
   profile: null,
+  follows: [],
   loggedIn: false,
   loginError: null,
 
@@ -54,8 +57,9 @@ export const useUserStore = create<UserState>((set, get) => ({
       localStorage.setItem("wrystr_pubkey", pubkey);
       localStorage.setItem("wrystr_login_type", "nsec");
 
-      // Fetch profile
+      // Fetch profile and follows
       get().fetchOwnProfile();
+      get().fetchFollows();
     } catch (err) {
       set({ loginError: `Login failed: ${err}` });
     }
@@ -84,6 +88,7 @@ export const useUserStore = create<UserState>((set, get) => ({
       localStorage.setItem("wrystr_login_type", "pubkey");
 
       get().fetchOwnProfile();
+      get().fetchFollows();
     } catch (err) {
       set({ loginError: `Login failed: ${err}` });
     }
@@ -94,7 +99,7 @@ export const useUserStore = create<UserState>((set, get) => ({
     ndk.signer = undefined;
     localStorage.removeItem("wrystr_pubkey");
     localStorage.removeItem("wrystr_login_type");
-    set({ pubkey: null, npub: null, profile: null, loggedIn: false, loginError: null });
+    set({ pubkey: null, npub: null, profile: null, follows: [], loggedIn: false, loginError: null });
   },
 
   fetchOwnProfile: async () => {
@@ -110,4 +115,19 @@ export const useUserStore = create<UserState>((set, get) => ({
       // Profile fetch is non-critical
     }
   },
+
+  fetchFollows: async () => {
+    const { pubkey } = get();
+    if (!pubkey) return;
+
+    try {
+      const ndk = getNDK();
+      const user = ndk.getUser({ pubkey });
+      const followSet = await user.follows();
+      const follows = Array.from(followSet).map((u) => u.pubkey);
+      set({ follows });
+    } catch {
+      // Non-critical
+    }
+  },
 }));