fix: shared terminal size handling

Author: Vierre3

app/components/Terminal.client.vue

@@ -116,6 +116,14 @@ function connectWs() {
                 if (!props.shareTerminalId) {
                     emit("shareCreated", msg.terminalId, msg.name ?? "");
                 }
+                // Re-fit and notify PTY of actual dimensions — the replayed output may have
+                // been at different dimensions (guest vs host), causing zsh PROMPT_SP glitch.
+                nextTick(() => {
+                    doFit();
+                    if (term && ws && ws.readyState === WebSocket.OPEN) {
+                        ws.send(JSON.stringify({ type: "resize", terminalId: sharedTerminalId, cols: term.cols, rows: term.rows }));
+                    }
+                });
             } else if (msg.type === "output" && term) {
                 term.write(msg.data);
             } else if (msg.type === "exit" && term) {