Add mute/ignore user + anti-spam (roadmap #5, NIP-51)

- fetchMuteList / publishMuteList in nostr client (kind 10000)
- mute store: mutedPubkeys persisted to localStorage + synced to relay;
  mute/unmute publish kind 10000 best-effort; fetchMuteList merges relay
  list with local mutes on login
- fetchMuteList called after every login (nsec + pubkey)
- Feed: muted pubkeys filtered from both Global and Following tabs
- NoteCard: ⋯ context menu (appears on hover, hidden for own notes)
  with mute / unmute action; backdrop click closes menu
- ProfileView: mute / unmute button in the action row (next to follow)
- SettingsView: MuteSection lists muted accounts with name + avatar;
  hover to reveal unmute button; hidden when mute list is empty

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

src/stores/mute.ts

@@ -0,0 +1,57 @@
+import { create } from "zustand";
+import { fetchMuteList, publishMuteList } from "../lib/nostr";
+
+const STORAGE_KEY = "wrystr_mutes";
+
+function loadLocal(): string[] {
+  try {
+    return JSON.parse(localStorage.getItem(STORAGE_KEY) ?? "[]");
+  } catch {
+    return [];
+  }
+}
+
+function saveLocal(pubkeys: string[]) {
+  localStorage.setItem(STORAGE_KEY, JSON.stringify(pubkeys));
+}
+
+interface MuteState {
+  mutedPubkeys: string[];
+  fetchMuteList: (pubkey: string) => Promise<void>;
+  mute: (pubkey: string) => Promise<void>;
+  unmute: (pubkey: string) => Promise<void>;
+}
+
+export const useMuteStore = create<MuteState>((set, get) => ({
+  mutedPubkeys: loadLocal(),
+
+  fetchMuteList: async (pubkey: string) => {
+    try {
+      const pubkeys = await fetchMuteList(pubkey);
+      if (pubkeys.length === 0) return;
+      // Merge relay list with any local-only mutes (e.g. from npub sessions)
+      const local = get().mutedPubkeys;
+      const merged = Array.from(new Set([...pubkeys, ...local]));
+      set({ mutedPubkeys: merged });
+      saveLocal(merged);
+    } catch {
+      // Non-critical — local mutes still work
+    }
+  },
+
+  mute: async (pubkey: string) => {
+    const { mutedPubkeys } = get();
+    if (mutedPubkeys.includes(pubkey)) return;
+    const updated = [...mutedPubkeys, pubkey];
+    set({ mutedPubkeys: updated });
+    saveLocal(updated);
+    publishMuteList(updated).catch(() => {}); // best-effort relay publish
+  },
+
+  unmute: async (pubkey: string) => {
+    const updated = get().mutedPubkeys.filter((p) => p !== pubkey);
+    set({ mutedPubkeys: updated });
+    saveLocal(updated);
+    publishMuteList(updated).catch(() => {});
+  },
+}));

src/stores/user.ts

@@ -3,6 +3,7 @@ import { NDKPrivateKeySigner } from "@nostr-dev-kit/ndk";
 import { getNDK, publishContactList } from "../lib/nostr";
 import { nip19 } from "@nostr-dev-kit/ndk";
 import { invoke } from "@tauri-apps/api/core";
+import { useMuteStore } from "./mute";
 
 export interface SavedAccount {
   pubkey: string;
@@ -97,9 +98,10 @@ export const useUserStore = create<UserState>((set, get) => ({
       // Store nsec in OS keychain (best-effort — gracefully ignored if unavailable)
       invoke<void>("store_nsec", { pubkey, nsec: nsecInput }).catch(() => {});
 
-      // Fetch profile and follows
+      // Fetch profile, follows, and mute list
       get().fetchOwnProfile();
       get().fetchFollows();
+      useMuteStore.getState().fetchMuteList(pubkey);
     } catch (err) {
       set({ loginError: `Login failed: ${err}` });
     }
@@ -134,6 +136,7 @@ export const useUserStore = create<UserState>((set, get) => ({
 
       get().fetchOwnProfile();
       get().fetchFollows();
+      useMuteStore.getState().fetchMuteList(pubkey);
     } catch (err) {
       set({ loginError: `Login failed: ${err}` });
     }