diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index 080e70d..411655e 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -1,7 +1,7 @@
 {
-    // See http://go.microsoft.com/fwlink/?LinkId=827846
-    // for the documentation about the extensions.json format
     "recommendations": [
+        "Jason2866.esp-decoder",
+        "pioarduino.pioarduino-ide",
         "platformio.platformio-ide"
     ],
     "unwantedRecommendations": [
diff --git a/platformio.ini b/platformio.ini
index a5e5e6f..263626c 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -25,21 +25,33 @@ lib_deps =
 platform = ${common.platform_esp32}
 board = esp32-s3-devkitc-1
 board_build.filesystem = littlefs
+; Arduino-ESP32 3.x images overflow the default dual-OTA app slot; this
+; firmware has no OTA, so use a single large app partition.
+board_build.partitions = huge_app.csv
 
 [env:esp32dev]
 platform = ${common.platform_esp32}
 board = esp32dev
 board_build.filesystem = littlefs
+; Arduino-ESP32 3.x images overflow the default dual-OTA app slot; this
+; firmware has no OTA, so use a single large app partition.
+board_build.partitions = huge_app.csv
 
 [env:esp32-C3-devkitm-1]
 platform = ${common.platform_esp32}
 board = esp32-c3-devkitm-1
 board_build.filesystem = littlefs
+; Arduino-ESP32 3.x images overflow the default dual-OTA app slot; this
+; firmware has no OTA, so use a single large app partition.
+board_build.partitions = huge_app.csv
 
 [env:esp32-c6-devkitc-1]
 platform = ${common.platform_esp32}
 board = esp32-c6-devkitc-1
 board_build.filesystem = littlefs
+; Arduino-ESP32 3.x images overflow the default dual-OTA app slot; this
+; firmware has no OTA, so use a single large app partition.
+board_build.partitions = huge_app.csv
 
 [env:rpipico2w]
 ; RP2350 support requires the maxgerhardt fork of the raspberrypi platform