android: a name of your own for anyone on the network

The desktop's local contact metadata on the phone: a peer's sheet ends in
Name and notes — a petname, a group, a private note and the Favorite and
Trusted marks, kept in the app's own config and published nowhere. The
petname stands in for the username on the buddy list, in the chat list, on
a thread's bar, in the peer sheet, in a room's roster and on a room line,
and the real username stays with it — on the line beneath, or beside the
name in a room — so a stranger is never quietly turned into someone you
know. Favourites sit at the top of the buddy list, and clearing a person's
details drops the entry rather than storing an empty one — the backend's
own rule.

src/lib/mockLibrary.js

@@ -381,6 +381,8 @@ const MOCK_USER = "mockuser";
 const ROOMS = [["Lounge", 412], ["Electronic", 98], ["Vinyl Rips", 37], ["Jazz", 61], ["Lossless Only", 23], ...Array.from({ length: 90 }, (_, i) => ["Room " + (i + 1), 90 - i])];
 const PEOPLE = ["ada", "bo", "cy", "dee"];
 const LINES = ["anyone got the 2024 remaster?", "the vinyl rip is warmer imo", "that folder is complete btw", "brb"];
+/* one person already named, so a cold read of the list has something in it */
+const CONTACTS = [{ username: "dusty_crates", petname: "Dusty the digger", group: "Traders", note: "always has the vinyl rips", trusted: true, favorite: false }];
 const PEERS = [
     { username: "hifi_hank", slot: true, speed: 2400, queue: 0, ext: "flac", depth: 24, rate: 96000 },
     { username: "dusty_crates", slot: true, speed: 900, queue: 0, ext: "flac", depth: 16, rate: 44100 },
@@ -579,6 +581,17 @@ function mockNet(cmd, args) {
     if (cmd === "buddy_list") return Promise.resolve(["ada", "cy"]);
     if (cmd === "buddy_add") return Promise.resolve(["ada", "cy", args?.username].filter(Boolean));
     if (cmd === "buddy_remove") return Promise.resolve(["ada", "cy"].filter((u) => u !== args?.username));
+    if (cmd === "contacts_meta_list") return Promise.resolve(CONTACTS.slice());
+    if (cmd === "contact_meta_set") {
+        /* the backend's own rule: an entry with nothing set is dropped */
+        const meta = args?.meta || {};
+        const txt = (v) => (typeof v === "string" && v.trim() ? v.trim() : null);
+        const i = CONTACTS.findIndex((c) => c.username === meta.username);
+        if (i >= 0) CONTACTS.splice(i, 1);
+        const kept = { username: meta.username, petname: txt(meta.petname), group: txt(meta.group), note: txt(meta.note), trusted: !!meta.trusted, favorite: !!meta.favorite };
+        if (kept.petname || kept.group || kept.note || kept.trusted || kept.favorite) CONTACTS.push(kept);
+        return Promise.resolve(CONTACTS.slice());
+    }
     if (cmd === "slsk_room_list") {
         later(200, () => mockEmit("soulseek:room-list", ROOMS.map(([name, users]) => ({ name, users }))));
         return Promise.resolve();