feat: Remove refresh icon and adjust timestamp display

m5paper-stockticker.ino

@@ -111,39 +111,6 @@ bool fetchStockAV(const char* sym, StockData& out) {
 // Drawing helpers
 // -------------------------------------------------------
 
-// Circular refresh icon drawn with primitives (two arcs + two arrowheads)
-void drawRefreshIcon(int x, int y, int sz) {
-  const float DEG2RAD = 3.14159265f / 180.0f;
-  int   cx = x + sz / 2;
-  int   cy = y + sz / 2;
-  int   ro = sz * 9 / 20;       // outer radius
-  int   ri = sz * 5 / 20;       // inner radius
-  float rm = (ro + ri) / 2.0f;  // midline
-  float as = sz / 5.0f;         // arrowhead size
-
-  // Two ~160° arcs with a small gap at top-right and bottom-left for arrowheads
-  M5.Display.fillArc(cx, cy, ro, ri, 200, 358, TFT_BLACK);  // upper/left arc
-  M5.Display.fillArc(cx, cy, ro, ri,  22, 180, TFT_BLACK);  // lower/right arc
-
-  // Arrowheads at 0° (top, pointing right) and 180° (bottom, pointing left)
-  for (int pass = 0; pass < 2; pass++) {
-    float a  = (pass == 0 ? 0.0f : 180.0f) * DEG2RAD;
-    float sa = sinf(a), ca = cosf(a);
-    float px = cx + rm * sa,  py = cy - rm * ca;
-    float tx = ca,  ty = sa;   // clockwise tangent
-    float rx = sa,  ry = -ca;  // outward radial
-    M5.Display.fillTriangle(
-      (int)(px + tx*as*0.7f),
-      (int)(py + ty*as*0.7f),
-      (int)(px - tx*as*0.5f + rx*as*0.6f),
-      (int)(py - ty*as*0.5f + ry*as*0.6f),
-      (int)(px - tx*as*0.5f - rx*as*0.6f),
-      (int)(py - ty*as*0.5f - ry*as*0.6f),
-      TFT_BLACK
-    );
-  }
-}
-
 void drawUpArrow(int x, int y, int sz) {
   M5.Display.fillTriangle(x + sz / 2, y, x, y + sz, x + sz, y + sz, TFT_BLACK);
 }
@@ -227,12 +194,11 @@ void setup() {
   M5.Display.setTextColor(TFT_BLACK, TFT_WHITE);
   M5.Display.setTextSize(2);
 
-  // -- Row 1: refresh icon + timestamp (left)  |  "zZz [battery] xx%" (right) --
+  // -- Row 1: timestamp (left)  |  "zZz [battery] xx%" (right) --
-  drawRefreshIcon(20, 8, 46);
   char timeStr[32];
   strftime(timeStr, sizeof(timeStr), "%d/%m %I:%M %p", &now);
-  M5.Display.setCursor(74, 22);
+  M5.Display.setCursor(20, 22);
-  M5.Display.print(timeStr);
+  M5.Display.print("U: ");
   M5.Display.print(timeStr);
 
   M5.Display.setCursor(740, 15);