optimize esp32 release binary size: 1.7MB -> 1.1MB

crates/client-esp32/Cargo.toml

@@ -26,5 +26,15 @@ postcard = { version = "1.1", default-features = false, features = ["alloc"] }
 
 log = "0.4"
 
+[profile.release]
+opt-level = "s"
+lto = true
+strip = true
+panic = "abort"
+codegen-units = 1
+
+[profile.dev]
+panic = "abort"
+
 [build-dependencies]
 embuild = "0.33"

crates/client-esp32/sdkconfig.defaults

@@ -19,3 +19,10 @@ CONFIG_PARTITION_TABLE_SINGLE_APP_LARGE=y
 CONFIG_ESP_TASK_WDT_TIMEOUT_S=30
 CONFIG_ESP_TASK_WDT_CHECK_IDLE_TASK_CPU0=n
 CONFIG_ESP_TASK_WDT_CHECK_IDLE_TASK_CPU1=n
+
+# Disable Bluetooth (unused)
+CONFIG_BT_ENABLED=n
+
+# Reduce log verbosity
+CONFIG_LOG_DEFAULT_LEVEL_INFO=y
+CONFIG_LOG_MAXIMUM_LEVEL_INFO=y