fix(eink): no counts of seconds on e-ink

Message ages, the GPS search time and the sky plot changed every second,
and each change is a panel refresh. On e-ink an age under a minute reads
"<1m", the search time counts minutes, and the sky redraws every 15 s
(at once after a key).

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

examples/companion_radio/GeoUtils.h

@@ -72,11 +72,16 @@ static inline void fmtDist(char* buf, int n, float km, bool imperial, bool space
 // sender's clock runs a little fast, or ours hasn't synced yet) clamps to
 // "0s" instead of going blank, since it did just arrive. Takes `now` rather
 // than reading the RTC itself, so this stays a pure function like the rest
-// of this file.
+// of this file. An e-ink build says "<1m" for the first minute: a count of
+// seconds would refresh the panel every second.
 static inline void fmtAgeShort(char* buf, int n, uint32_t now, uint32_t lastmod) {
   if (lastmod == 0) { buf[0] = '\0'; return; }
   uint32_t age = (now > lastmod) ? (now - lastmod) : 0;
+#if defined(EINK_DISPLAY_MODEL)
+  if      (age < 60)    snprintf(buf, n, "<1m");
+#else
   if      (age < 60)    snprintf(buf, n, "%us", (unsigned)age);
+#endif
   else if (age < 3600)  snprintf(buf, n, "%um", (unsigned)(age / 60));
   else if (age < 86400) snprintf(buf, n, "%uh", (unsigned)(age / 3600));
   else                  snprintf(buf, n, "%ud", (unsigned)(age / 86400));

examples/companion_radio/ui-new/SkyView.h

@@ -105,7 +105,12 @@ namespace skyview {
     d.setCursor(x0, y); d.print(buf);
     y += step;
     if (g.ttff_ms) snprintf(buf, sizeof(buf), "TTFF %lus", (unsigned long)(g.ttff_ms / 1000));
-    else if (g.start_ms) snprintf(buf, sizeof(buf), "Wait %lus", (unsigned long)((millis() - g.start_ms) / 1000));
+    else if (g.start_ms) {
+      const unsigned long s = (millis() - g.start_ms) / 1000;
+      if (!d.isEink()) snprintf(buf, sizeof(buf), "Wait %lus", s);
+      else if (s < 60) snprintf(buf, sizeof(buf), "Wait <1m");   // in minutes, as the panel refreshes
+      else             snprintf(buf, sizeof(buf), "Wait %lum", s / 60);
+    }
     else buf[0] = 0;
     d.setCursor(x0, y); d.print(buf);
   }
@@ -178,7 +183,7 @@ namespace skyview {
     }
     if (signal) renderSignal(d, *g, top);
     else renderSky(d, *g, top);
-    return 1000;
+    return d.isEink() ? 15000 : 1000;   // the sky shifts slowly; each e-ink redraw is a refresh
   }
 
 }  // namespace skyview

examples/companion_radio/ui-new/StatusScreen.h

@@ -189,7 +189,12 @@ private:
       if (g->hdop > 0 && g->hdop < 99) snprintf(a, sizeof(a), "%.1f", g->hdop); else strcpy(a, "-");
       row(d, f, rsv, "HDOP", a);
       if (g->ttff_ms)       snprintf(a, sizeof(a), "%lu s", (unsigned long)(g->ttff_ms / 1000));
-      else if (g->start_ms) snprintf(a, sizeof(a), "%lu s", (unsigned long)((millis() - g->start_ms) / 1000));
+      else if (g->start_ms) {
+        const unsigned long s = (millis() - g->start_ms) / 1000;
+        if (!Features::IS_EINK) snprintf(a, sizeof(a), "%lu s", s);
+        else if (s < 60)        strcpy(a, "<1 min");   // seconds would refresh the panel every second
+        else                    snprintf(a, sizeof(a), "%lu min", s / 60);
+      }
       else                  strcpy(a, "-");
       row(d, f, rsv, g->ttff_ms ? "First fix" : "Searching", a);
     }