Remove bug from display manager of missing function

src/display_manager.py

@@ -1811,20 +1811,7 @@ class DisplayManager:
     # Screenshot capture subsystem
     # -------------------------------------------------------------
 
-    def _write_screenshot_meta(self, capture_type: str, final_path: str, send_immediately: bool = False):
+    def _pending_trigger_is_valid(self, meta: Dict) -> bool:
-        """Write screenshots/meta.json atomically so simclient can detect new captures.
-
-        IMPORTANT: Protect event-triggered metadata from being overwritten by periodic captures.
-        If a periodic screenshot is captured while an event-triggered one is still pending
-        transmission (send_immediately=True), skip writing meta.json to preserve the event's metadata.
-
-        Args:
-            capture_type: 'periodic', 'event_start', or 'event_stop'
-            final_path:   absolute path of the just-written screenshot file
-            send_immediately: True for triggered (event) captures, False for periodic ones
-        """
-        try:
-            def _pending_trigger_is_valid(meta: Dict) -> bool:
         """Return True only for fresh, actionable pending trigger metadata.
 
         This prevents a stale/corrupt pending flag from permanently blocking
@@ -1873,6 +1860,19 @@ class DisplayManager:
         except Exception:
             return False
 
+    def _write_screenshot_meta(self, capture_type: str, final_path: str, send_immediately: bool = False):
+        """Write screenshots/meta.json atomically so simclient can detect new captures.
+
+        IMPORTANT: Protect event-triggered metadata from being overwritten by periodic captures.
+        If a periodic screenshot is captured while an event-triggered one is still pending
+        transmission (send_immediately=True), skip writing meta.json to preserve the event's metadata.
+
+        Args:
+            capture_type: 'periodic', 'event_start', or 'event_stop'
+            final_path:   absolute path of the just-written screenshot file
+            send_immediately: True for triggered (event) captures, False for periodic ones
+        """
+        try:
             meta_path = os.path.join(self.screenshot_dir, 'meta.json')
             
             # PROTECTION: Don't overwrite pending event-triggered metadata with periodic capture
@@ -1882,7 +1882,7 @@ class DisplayManager:
                         with open(meta_path, 'r', encoding='utf-8') as f:
                             existing_meta = json.load(f)
                         # If there's a pending event-triggered capture, skip this periodic write
-                        if _pending_trigger_is_valid(existing_meta):
+                        if self._pending_trigger_is_valid(existing_meta):
                             logging.debug(f"Skipping periodic meta.json to preserve pending {existing_meta.get('type')} (send_immediately=True)")
                             return
                 except Exception:
@@ -2105,7 +2105,7 @@ class DisplayManager:
                         with open(meta_path, 'r', encoding='utf-8') as f:
                             existing_meta = json.load(f)
                         # If there's a pending event-triggered capture, don't update latest.jpg
-                        if _pending_trigger_is_valid(existing_meta):
+                        if self._pending_trigger_is_valid(existing_meta):
                             should_update_latest = False
                             logging.debug(f"Skipping latest.jpg update to preserve pending {existing_meta.get('type')} screenshot")
                 except Exception: