fix(newos4): agent read gets its own chat cursor (v4.6.76)

Two readers shared one cursor. The 30 s UI poller printed each reply and advanced
webx11_chat_state.cursor, so the agent's chat_hermes read then asked for 'since=<that>'
and got an empty list — the answer appeared on the terminal and never reached the model.
That is the reported symptom exactly.

chat_hermes read now uses webx11_chat_agent_cursor, starts from 0 on first use so the
whole thread is visible, and never touches the display cursor. Empty reads say why
('still awaiting Hermes' vs 'no new messages since your last read').

Proven: UI poll consumed the reply (printed to terminal), then chat_hermes read still
returned both the agent's question and Hermes's answer.

1 files changed, 15 insertions, 5 deletions

diff --git a/modules/core/core-bundle.js b/modules/core/core-bundle.js
index a689774..697b5ec 100644
--- a/modules/core/core-bundle.js
+++ b/modules/core/core-bundle.js
@@ -11094,19 +11094,29 @@ buildSystemPrompt() {
                                     });
                                 }
                                 const st = ds._chatThread();
+                                // v4.6.76: a SEPARATE cursor from the terminal display. The UI poller
+                                // runs every 30 s and advances the shared cursor, so a read that used it
+                                // returned nothing — the answer was printed for the human and the model
+                                // never saw it. Two readers, two cursors. First read is from 0.
+                                let ac = 0;
+                                try { ac = parseInt(localStorage.getItem('webx11_chat_agent_cursor') || '0', 10) || 0; } catch (e) { ac = 0; }
                                 const resp = await fetch(
-                                    '/spaces/newos4/api/chat/poll.php' + (st.cursor ? '?since=' + st.cursor : ''),
+                                    '/spaces/newos4/api/chat/poll.php' + (ac ? '?since=' + ac : ''),
                                     { headers: { 'X-Chat-Token': st.token } });
                                 const j = await resp.json().catch(() => null);
                                 if (!resp.ok || !j || !j.success) {
                                     return JSON.stringify({ error: (j && j.error) || ('HTTP ' + resp.status) });
                                 }
-                                if (j.cursor) ds._chatSaveState({ token: st.token, cursor: j.cursor, thread: j.thread || '' });
+                                if (j.cursor) { try { localStorage.setItem('webx11_chat_agent_cursor', String(j.cursor)); } catch (e) {} }
+                                const msgs = (j.messages || []).slice(-10).map(m => ({
+                                    author: m.author, ts: m.ts, text: m.text
+                                }));
                                 return JSON.stringify({
                                     awaiting: j.awaiting,
-                                    messages: (j.messages || []).slice(-10).map(m => ({
-                                        author: m.author, ts: m.ts, text: m.text
-                                    }))
+                                    messages: msgs,
+                                    note: msgs.length ? undefined
+                                        : (j.awaiting ? 'no reply yet — still awaiting Hermes'
+                                                      : 'no new messages since your last read')
                                 });
                             } catch (e) {
                                 return JSON.stringify({ error: e.message });