Group the module crates under modules/

The service pseudo-clients and the ircd protocol link sat flat at the
repo root, mixed in with the daemon core and the SDK. Move them all
under modules/ so the tree separates concerns cleanly: the daemon in
src/, the SDK every module links against in api/, and the loadable
modules — the pseudo-clients plus the protocol link — in modules/.

Workspace members, the daemon's per-crate dependency paths, and each
module's api path are updated to match; the docs follow. No code change.

modules/memoserv/src/list.rs

@@ -0,0 +1,26 @@
+use fedserv_api::{human_time, Sender, ServiceCtx, Store};
+
+// LIST: show every memo with a one-line preview; \x02*\x02 marks unread.
+pub fn handle(me: &str, from: &Sender, account: &str, ctx: &mut ServiceCtx, db: &dyn Store) {
+    let memos = db.memo_list(account);
+    if memos.is_empty() {
+        ctx.notice(me, from.uid, "You have no memos.");
+        return;
+    }
+    let unread = memos.iter().filter(|m| !m.read).count();
+    ctx.notice(me, from.uid, format!("Your memos ({} total, {unread} new). \x02*\x02 marks unread:", memos.len()));
+    for (i, m) in memos.iter().enumerate() {
+        let flag = if m.read { ' ' } else { '*' };
+        ctx.notice(me, from.uid, format!("  {}{flag} from \x02{}\x02 ({}): {}", i + 1, m.from, human_time(m.ts), preview(&m.text)));
+    }
+}
+
+// First line / first 80 chars, for LIST.
+fn preview(text: &str) -> String {
+    let line = text.lines().next().unwrap_or("");
+    if line.chars().count() > 80 {
+        format!("{}…", line.chars().take(80).collect::<String>())
+    } else {
+        line.to_string()
+    }
+}