Add full Companion OTA source builds

scripts/esp32_full_partition.py

@@ -15,11 +15,20 @@ def parse_flash_size(value):
 if os.environ.get("MESHCORE_ESP32_FULL_BUILD") == "1":
     board = env.BoardConfig()
     flash_size = parse_flash_size(board.get("upload.flash_size", "4MB"))
+    companion_radio_full = (
+        os.environ.get("MESHCORE_COMPANION_RADIO_FULL") == "1"
+    )
 
     if flash_size >= 16 * 1024 * 1024:
         partitions = "default_16MB.csv"
     elif flash_size >= 8 * 1024 * 1024:
         partitions = "default_8MB.csv"
+    elif flash_size >= 4 * 1024 * 1024 and companion_radio_full:
+        # A classic ESP32 Companion with USB, BLE, WiFi, WebConfig, and the
+        # mOTA seeder can exceed the largest possible pair of 4 MiB OTA
+        # slots. This role cannot install mOTA on itself, so give it one 3 MiB
+        # application slot and retain SPIFFS/coredump.
+        partitions = "huge_app.csv"
     elif flash_size >= 4 * 1024 * 1024:
         partitions = "variants/dual_ota_full_4MB.csv"
     else:
@@ -28,8 +37,12 @@ if os.environ.get("MESHCORE_ESP32_FULL_BUILD") == "1":
     if partitions:
         board.update("build.partitions", partitions)
         print(
-            "ESP32 FULL build: using %s for %s flash"
-            % (partitions, board.get("upload.flash_size", "4MB"))
+            "ESP32 FULL build%s: using %s for %s flash"
+            % (
+                " (Companion source-only)" if companion_radio_full else "",
+                partitions,
+                board.get("upload.flash_size", "4MB"),
+            )
         )
     else:
         print(