NA's CAMPUS page always shows a campus, and says which

Opened directly (nothing tapped), page 99 was all purple: no campus chosen. It now shows the first
other campus until one is tapped, and the back key reads WS / ALL SITES.

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

settings/campuses.py

@@ -118,14 +118,18 @@ def build_view(local_cfg, page, overview_page):
             "options": {"stepProgression": "auto", "stepExpression": "", "rotaryActions": False, "canModifyStyleInApis": True,
                         "notes": "STATUS tile 'campus view %d/%d' - the tapped campus's key here, view only (hold it on that campus's own deck)." % (r, c)},
             "feedbacks": [], "steps": {"0": {"action_sets": {"down": [], "up": []}, "options": {"runWhileHeld": []}}}, "localVariables": []})
-    make_page.place(controls, (3, 0), make_page.static_button("campus_back", "ALL\\nCAMPUSES", 0x37474F, 0xFFFFFF, overview_page,
+    back = make_page.static_button("campus_back", "ALL\\nSITES", 0x37474F, 0xFFFFFF, overview_page,
-                                                              "Tap: back to the CAMPUSES page (page %d)." % overview_page, "STATUS jump key"))
+                                   "Tap: back to the CAMPUSES page (page %d)." % overview_page, "STATUS jump key")
+    for layer in back["style"]["layers"]:
+        if layer["type"] == "text":                          # which campus this page shows, then the way back
+            layer["text"] = make_page.prop("`${$(custom:%s)}\\nALL SITES`" % SELECT, True)
+    make_page.place(controls, (3, 0), back)
     return make_page.page_export("%d\\nCampus" % page, page, controls, local_cfg)
 
 
 def select_action(cid):
     return {"type": "action", "id": make_page.stable_id("campus_" + cid, "select"), "definitionId": "custom_variable_set_value",
-            "connectionId": "internal", "options": {"name": make_page.prop(SELECT), "value": make_page.prop(cid)}, "children": {}}
+            "connectionId": "internal", "options": {"name": make_page.prop(SELECT), "value": make_page.prop(cid.upper())}, "children": {}}
 
 
 def campus_key(cid, name, names, actions, note, local_cfg):
@@ -325,7 +329,11 @@ class Mirror:
         for t in threads:
             t.join(2)
         # The CAMPUS page shows the tapped campus: its keys moved onto their cells.
-        pick = (self.site.comp.get_custom(SELECT) or "").strip()
+        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:
+            # Nothing tapped yet (or a campus that left): show the first one rather than a purple page.
+            pick = sorted(others)[0]
+            self.site.comp.set_custom(SELECT, pick.upper())
         st = self.remote.get(pick)
         if st and pick in self.keys and (data.get("pages") or {}).get("view"):
             try:

tests/test_campus.py

@@ -258,6 +258,7 @@ class TestCampusesView(unittest.TestCase):
         ctrls = export["page"]["controls"]
         self.assertEqual(export["page"]["name"], "99\\nCampus")
         self.assertIn("CAMPUSES", json.dumps(ctrls["3"]["0"]))                      # where ALARMS sits on every status page
+        self.assertIn("$(custom:sp_view)", json.dumps(ctrls["3"]["0"]["style"]))       # it says which campus is shown
         cells = [ctl for row in ctrls.values() for ctl in row.values() if "campus view" in (ctl.get("options") or {}).get("notes", "")]
         self.assertEqual(len(cells), 28)
         self.assertTrue(all(c["steps"]["0"]["action_sets"] == {"down": [], "up": []} for c in cells))   # no press, no hold
@@ -286,7 +287,7 @@ class TestCampusesView(unittest.TestCase):
         ws_key = next(k for _, _, k in keys if "'campus ws'" in k["options"]["notes"])
         acts = ws_key["steps"]["0"]["action_sets"]["up"]
         self.assertEqual([a["definitionId"] for a in acts], ["custom_variable_set_value", "set_page"])
-        self.assertEqual((acts[0]["options"]["value"]["value"], acts[1]["options"]["page"]["value"]), ("ws", 99))
+        self.assertEqual((acts[0]["options"]["value"]["value"], acts[1]["options"]["page"]["value"]), ("WS", 99))
 
     def test_a_campus_tells_the_hub_and_learns_nothing_back(self):
         from settings import campuses as cv