diff --git a/turnstone/core/session.py b/turnstone/core/session.py
index 9c74a54c..c0636bcc 100644
--- a/turnstone/core/session.py
+++ b/turnstone/core/session.py
@@ -628,10 +628,14 @@ class ChatSession:
             user_msg = ""
             asst_msg = ""
             for m in self.messages:
+                content = m.get("content") or ""
+                # Handle multi-part content (vision messages)
+                if isinstance(content, list):
+                    content = " ".join(p.get("text", "") for p in content if isinstance(p, dict))
                 if m["role"] == "user" and not user_msg:
-                    user_msg = (m.get("content") or "")[:300]
+                    user_msg = content[:300]
                 elif m["role"] == "assistant" and not asst_msg:
-                    asst_msg = (m.get("content") or "")[:200]
+                    asst_msg = content[:200]
                 if user_msg and asst_msg:
                     break
             if not user_msg:
@@ -667,8 +671,9 @@ class ChatSession:
             title = raw.split("\n")[0].strip().strip('"').strip("'")
             if title:
                 update_workstream_title(self._ws_id, title[:80])
+                self.ui.on_rename(title[:80])
         except Exception:
-            pass  # Title generation is non-critical
+            log.debug("Title generation failed for ws=%s", self._ws_id, exc_info=True)
 
     def resume(self, ws_id: str) -> bool:
         """Load messages from a previous workstream and resume it.
diff --git a/turnstone/ui/static/app.js b/turnstone/ui/static/app.js
index 5fb79eaf..adb5bcb0 100644
--- a/turnstone/ui/static/app.js
+++ b/turnstone/ui/static/app.js
@@ -592,10 +592,31 @@ function connectContentSSE(wsId) {
           showLogin();
           return;
         }
-        setTimeout(function () {
-          connectContentSSE(currentWsId);
-        }, contentRetryDelay);
-        contentRetryDelay = Math.min(contentRetryDelay * 2, 30000);
+        return r.json().then(function (data) {
+          // Replace workstream list — IDs may have changed after restart
+          var freshIds = {};
+          workstreams = {};
+          (data.workstreams || []).forEach(function (ws) {
+            workstreams[ws.id] = { name: ws.name, state: ws.state };
+            freshIds[ws.id] = true;
+          });
+          // Always re-render tabs since workstreams map was replaced
+          renderTabBar();
+          // If current ws_id is stale, switch to first available
+          if (currentWsId && !freshIds[currentWsId]) {
+            var ids = Object.keys(freshIds);
+            if (ids.length) {
+              switchTab(ids[0]);
+            } else {
+              showDashboard();
+            }
+            return; // switchTab/showDashboard handles SSE connection
+          }
+          setTimeout(function () {
+            connectContentSSE(currentWsId);
+          }, contentRetryDelay);
+          contentRetryDelay = Math.min(contentRetryDelay * 2, 30000);
+        });
       })
       .catch(function () {
         setTimeout(function () {