diff --git a/tui/hookwise_tui/tabs/status.py b/tui/hookwise_tui/tabs/status.py
index 0fa1617..8302f7d 100644
--- a/tui/hookwise_tui/tabs/status.py
+++ b/tui/hookwise_tui/tabs/status.py
@@ -490,23 +490,23 @@ def _render_segment(seg: str, cache: dict) -> str:
                 except (ValueError, KeyError):
                     pass
                 suffix = f" (+{len(events) - 1} more)" if len(events) > 1 else ""
-                return f"\U0001f4c5 {current.get('title', '?')}{ends_in}{suffix}"
-            if not isinstance(next_event, dict) or not next_event.get("title"):
+                return f"\U0001f4c5 {current.get('name', '?')}{ends_in}{suffix}"
+            if not isinstance(next_event, dict) or not next_event.get("name"):
                 return "\U0001f4c5 Free"
             try:
                 start_ms = int(datetime.fromisoformat(next_event["start"].replace("Z", "+00:00")).timestamp() * 1000)
             except (ValueError, KeyError):
-                return f"\U0001f4c5 {next_event['title']}"
+                return f"\U0001f4c5 {next_event['name']}"
             now_ms = int(time.time() * 1000)
             diff_min = round((start_ms - now_ms) / 60000)
             other_count = len(events) - 1 if len(events) > 1 else 0
             more_suffix = f" (+{other_count} more)" if other_count > 0 else ""
             if diff_min < 5:
-                text = f"\U0001f4c5 {next_event['title']} NOW"
+                text = f"\U0001f4c5 {next_event['name']} NOW"
             elif diff_min < 15:
-                text = f"\U0001f4c5 {next_event['title']} in {diff_min}min \u26a1"
+                text = f"\U0001f4c5 {next_event['name']} in {diff_min}min \u26a1"
             elif diff_min <= 60:
-                text = f"\U0001f4c5 {next_event['title']} in {diff_min}min"
+                text = f"\U0001f4c5 {next_event['name']} in {diff_min}min"
             else:
                 hours = round(diff_min / 60)
                 text = f"\U0001f4c5 Free for {hours}h"
diff --git a/tui/tests/test_status_segments.py b/tui/tests/test_status_segments.py
new file mode 100644
index 0000000..569a317
--- /dev/null
+++ b/tui/tests/test_status_segments.py
@@ -0,0 +1,63 @@
+"""Cross-boundary tests for StatusTab._render_segment().
+
+These bind the Python status-line renderer to the EXACT field names the Go
+feed producers emit (after FlattenForTUI spreads the envelope's data fields to
+the top level of each cache entry). The renderer reads producer field names
+directly -- there is no rename layer in data.py -- so a mismatch silently
+degrades a segment in production (the Go->JSON->Python class, cf. weather bug
+#29). See GitHub issue #155: calendar/project read names the producers never
+emit. Canonical side: the Go producer (consistent + fixtured + tested); the
+Python renderer adapts to it here.
+"""
+
+from __future__ import annotations
+
+from datetime import datetime, timedelta, timezone
+
+from hookwise_tui.tabs.status import StatusTab
+
+
+class TestCalendarSegment:
+    """The calendar producer emits event 'name'; the renderer must read it."""
+
+    def test_current_event_renders_producer_name(self):
+        # Mirrors feeds.CalendarTestFixture(): events carry 'name', not 'title'.
+        cache = {
+            "calendar": {
+                "events": [
+                    {
+                        "name": "Standup",
+                        "start": "2026-03-07T10:30:00Z",
+                        "end": "2999-01-01T00:00:00Z",  # far future => "is current"
+                        "all_day": False,
+                        "is_current": True,
+                    }
+                ],
+                "next_event": {"name": "Standup", "start": "2026-03-07T10:30:00Z"},
+            }
+        }
+        out = StatusTab._render_segment("calendar", cache)
+        assert "Standup" in out, (
+            "calendar must render the producer's event 'name'; reading 'title' "
+            "yields '?' (issue #155)"
+        )
+        assert "?" not in out
+
+    def test_next_event_renders_producer_name_not_free(self):
+        # No current event, one upcoming ~30min out (inside the <=60min naming
+        # window) -> must show its name. Reading 'title' here returned "Free"
+        # because next_event.get("title") was falsy (issue #155).
+        soon = (datetime.now(timezone.utc) + timedelta(minutes=30)).strftime(
+            "%Y-%m-%dT%H:%M:%SZ"
+        )
+        cache = {
+            "calendar": {
+                "events": [{"name": "Standup", "start": soon, "is_current": False}],
+                "next_event": {"name": "Standup", "start": soon},
+            }
+        }
+        out = StatusTab._render_segment("calendar", cache)
+        assert "Standup" in out, (
+            "next_event must render the producer's 'name'; reading 'title' falls "
+            "through to 'Free' (issue #155)"
+        )