feat: Add VOO to portfolio and improve configuration comments

m5paper-stockticker.ino

@@ -25,12 +25,19 @@ struct Stock { const char* symbol; float shares; float costBasis; bool useAV; };
 
 Stock myPortfolio[] = {
   { "AMD",    2.0000f,   53.02f, false },
-  { "SWPPX", 41.2180f,  743.39f, true  },  // mutual fund -> Alpha Vantage
+  { "SWPPX", 41.2180f,  743.39f, true  },
   { "TSLA",   1.0000f,  370.50f, false },
   { "SPYI",   6.0000f,  313.15f, false },
   { "JEPQ",   3.0000f,  178.52f, false },
   { "SCHD",   3.0000f,   95.97f, false },
+  {"VOO",   1.0000f,  684.60f, true },
 };
+// To add an entry:  { "SYMBOL", shares, costBasis, useAV }
+//   useAV = false  -> Finnhub (stocks & ETFs)
+//   useAV = true   -> Alpha Vantage (mutual funds e.g. SWPPX)
+//   costBasis      -> total amount paid (Value $ - Total Gain $ from your broker CSV)
+// The display auto-scales font size to fit all entries on one page.
+
 const int NUM_STOCKS = sizeof(myPortfolio) / sizeof(myPortfolio[0]);
 
 // -------------------------------------------------------