NA's page keys name the other locations with a problem in a blue band; PROP OUT reads Chronicles

- campuses.remote_summary -> custom variable sp_remote; band flashes until acknowledged there, steady after, "SC?" when silent
- nav_locations_band (NA only); red stays for NA's own problems
- PROP OUT: /Volumes/Location Assets/{date} on NA ProP (Chronicles share)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

settings/campuses.py

@@ -104,6 +104,7 @@ def http_json(url, body=None, timeout=3):
 # --- the pages (the hub only) -----------------------------------------------------------
 
 VIEW = {"state": "sp_state_view", "heartbeat": "sp_hb_view"}
+REMOTE = make_page.REMOTE_VAR      # which other locations have a problem: the blue band on NA's page-number keys
 SELECT = "sp_view"
 VIEW_CMD = "sp_view_cmd"       # a tap or hold on the LOCATION page, passed on to that location's own watchdog
 MODE = "sp_view_mode"          # "" = that location's status page, "RESTART" = its Restart page
@@ -205,7 +206,7 @@ def ensure_variables(cfg, ids):
     from settings import campus
     have, _ = campus.companion_state(cfg)
     want = [n for cid in ids for n in ("sp_state_" + cid, "sp_hb_" + cid) if n not in have]
-    want += [n for n in (VIEW["state"], VIEW["heartbeat"], SELECT, VIEW_CMD, MODE) if n not in have]
+    want += [n for n in (VIEW["state"], VIEW["heartbeat"], SELECT, VIEW_CMD, MODE, REMOTE) if n not in have]
     if not want:
         return
     comp = cfg.get("companion") or {}
@@ -385,6 +386,8 @@ class Mirror:
             threads.append(t)
         for t in threads:
             t.join(2)
+        if (data.get("pages") or {}).get("overview"):
+            self.site.comp.set_custom(REMOTE, json.dumps(remote_summary(others, self.remote, time.time()), separators=(",", ":")))
         # The LOCATION page shows the tapped location: its keys moved onto their cells.
         pick = (self.site.comp.get_custom(SELECT) or "").strip().lower()      # held as "WS": the back key shows it
         if pick not in others and others:
@@ -404,6 +407,28 @@ class Mirror:
             self.site.comp.set_custom(VIEW["heartbeat"], str(st.get("hb") or "0"))
 
 
+def remote_summary(others, remote, now, stale=30):
+    """{"t", "n", "x", "f"}: the other locations with something down (their ALL key not "ALL OK", or not
+    answering: "SC?"), named by id; "f" = 1 while any of them is still flashing (not acknowledged there)."""
+    names, flashing = [], False
+    for cid in sorted(others):
+        st = remote.get(cid)
+        tag = cid.upper()
+        if not st or now - float(st.get("hb") or 0) > stale:
+            names.append(tag + "?")
+            flashing = True
+            continue
+        try:
+            all_ = json.loads(st.get("state") or "{}").get("all") or {}
+        except ValueError:
+            all_ = {}
+        if not all_ or str(all_.get("x") or "").startswith("ALL OK"):
+            continue
+        names.append(tag)
+        flashing = flashing or all_.get("b") != all_.get("b2")
+    return {"t": int(now), "n": len(names), "x": " ".join(names), "f": 1 if flashing else 0}
+
+
 def campus_command(keys, text, now, restart=False):
     """The LOCATION page's taps and holds ("tap 1 3 <time>;hold 0 2 <time>") as that location's own
     commands ("ack hd1", "restart hd1 <time>"; on its Restart page a hold is "force rs_x <time>" and a