T5S3 ui fixes, including bigger minesweeper grid square.

Contact list display bug fix for all devices: MyMesh.h — added onAdvertRecv override declaration (line 214), alongside the other contact-related overrides.
MyMesh.cpp — added the implementation (lines 374-387). It calls BaseChatMesh::onAdvertRecv() first to let all normal processing happen (auto-add, replay guard, path caching, etc.), then unconditionally looks up the contact by pubkey and bumps lastmod to local RTC time. This way, even when the base class's replay guard early-returns (because timestamp <= last_advert_timestamp), the contact still bubbles up in the recency-sorted contacts list since we're actively hearing it.

examples/companion_radio/MyMesh.cpp

@@ -371,6 +371,21 @@ void MyMesh::onContactsFull() {
   }
 }
 
+void MyMesh::onAdvertRecv(mesh::Packet* packet, const mesh::Identity& id, uint32_t timestamp, const uint8_t* app_data, size_t app_data_len) {
+  // Let the base class handle normal advert processing (auto-add, replay guard, etc.)
+  BaseChatMesh::onAdvertRecv(packet, id, timestamp, app_data, app_data_len);
+
+  // Unconditionally bump lastmod to local RTC time.
+  // The base class replay guard early-returns without updating lastmod when
+  // timestamp <= last_advert_timestamp, causing nodes with stuck or behind
+  // clocks to sink to the bottom of the recency-sorted contacts list even
+  // though we are actively hearing their adverts.
+  ContactInfo* c = lookupContactByPubKey(id.pub_key, PUB_KEY_SIZE);
+  if (c) {
+    c->lastmod = getRTCClock()->getCurrentTime();
+  }
+}
+
 void MyMesh::onDiscoveredContact(ContactInfo &contact, bool is_new, uint8_t path_len, const uint8_t* path) {
   _forceNextImport = false;  // clear force-add flag (set by forceImportContact)
   if (_serial->isConnected()) {

examples/companion_radio/MyMesh.h

@@ -211,6 +211,7 @@ protected:
   bool shouldOverwriteWhenFull() const override;
   void onContactsFull() override;
   void onContactOverwrite(const uint8_t* pub_key) override;
+  void onAdvertRecv(mesh::Packet* packet, const mesh::Identity& id, uint32_t timestamp, const uint8_t* app_data, size_t app_data_len) override;
   bool onContactPathRecv(ContactInfo& from, uint8_t* in_path, uint8_t in_path_len, uint8_t* out_path, uint8_t out_path_len, uint8_t extra_type, uint8_t* extra, uint8_t extra_len) override;
   void onDiscoveredContact(ContactInfo &contact, bool is_new, uint8_t path_len, const uint8_t* path) override;
   void onContactPathUpdated(const ContactInfo &contact) override;

examples/companion_radio/ui-new/Channelpickerscreen.h

@@ -376,7 +376,11 @@ public:
 
       // Key hints
       display.setColor(DisplayDriver::YELLOW);
+    #if defined(LilyGo_T5S3_EPaper_Pro)
+      const char* hints = "Tap:Yes  Boot:Cancel";
+    #else
       const char* hints = "Enter:Yes  Q:Cancel";
+    #endif
       display.setCursor(boxX + 4, boxY + 29);
       display.print(hints);
     }
@@ -396,7 +400,7 @@ public:
       display.print(rt);
     } else {
       display.print("Tap:Open");
-      const char* rt = "Hold:Del Boot:Back";
+      const char* rt = "Long Press:Del Hist Boot:Back";
       display.setCursor(display.width() - display.getTextWidth(rt) - 2, footerY);
       display.print(rt);
     }

examples/companion_radio/ui-new/MinesweeperScreen.h

@@ -3,12 +3,13 @@
 // =============================================================================
 // MinesweeperScreen -- Classic Minesweeper for Meck e-ink devices
 //
-// 9x9 grid, 10 mines (classic Beginner difficulty).
+// 9x9 grid, 10 mines (classic Beginner difficulty) on T-Deck Pro.
+// 14x14 grid, 25 mines on T5S3 (fills the larger virtual display).
 // First reveal is always safe -- mines are placed after the first click.
 // Fully turn-based: no tick timer, renders only on input. Perfect for e-ink.
 //
 // T-Deck Pro: 14x14 pixel cells (126x126 grid area on 240x320 display)
-// T5S3:        8x8 pixel cells (72x72 grid area on 128x128 virtual display)
+// T5S3:       14x14 grid at 8x8 pixel cells (112x112 on 128x128 virtual display)
 // =============================================================================
 
 #include <helpers/ui/UIScreen.h>
@@ -17,22 +18,23 @@
 // Forward declarations
 class UITask;
 
-// -- Grid parameters --
-#define MINE_GRID_W    9
-#define MINE_GRID_H    9
-#define MINE_COUNT    10
-#define MINE_TOTAL    (MINE_GRID_W * MINE_GRID_H)
-
-// -- Cell sizes per platform --
+// -- Grid and cell parameters per platform --
 #if defined(LilyGo_T5S3_EPaper_Pro)
-  #define MINE_CELL     8
-  #define MINE_HDR     14
-  #define MINE_FTR     10
+  #define MINE_GRID_W   14
+  #define MINE_GRID_H   14
+  #define MINE_COUNT    25
+  #define MINE_CELL      8
+  #define MINE_HDR      14
+  #define MINE_FTR      10
 #else
-  #define MINE_CELL    14
-  #define MINE_HDR     14
-  #define MINE_FTR     14
+  #define MINE_GRID_W    9
+  #define MINE_GRID_H    9
+  #define MINE_COUNT    10
+  #define MINE_CELL     14
+  #define MINE_HDR      14
+  #define MINE_FTR      14
 #endif
+#define MINE_TOTAL    (MINE_GRID_W * MINE_GRID_H)
 
 #define MINE_VALUE  9   // Content value indicating a mine
 

examples/companion_radio/ui-new/Settingsscreen.h

@@ -2111,9 +2111,9 @@ public:
                 char hintBuf[40];
               #if defined(LilyGo_T5S3_EPaper_Pro)
                 if (chIdx > 0) {
-                  snprintf(hintBuf, sizeof(hintBuf), "Notif:%s Ent:Region Hold:Del", nTag);
+                  snprintf(hintBuf, sizeof(hintBuf), "Hold:Del");
                 } else {
-                  snprintf(hintBuf, sizeof(hintBuf), "Notif:%s Ent:Region", nTag);
+                  hintBuf[0] = '\0';  // No actionable hints for channel 0 on T5S3
                 }
               #elif defined(MECK_AUDIO_VARIANT) || defined(HAS_4G_MODEM)
                 if (chIdx > 0) {