add all crates: domain, protocol, application, client, adapters, ESP32 firmware

Server: domain (entities, value objects, ports), protocol (postcard wire types),
application (config service, data projection), adapters (config-memory, tcp-server),
bootstrap (composition root with fake data).

Client: client-domain (layout engine, render tree, HAL ports),
client-application (message handling, repaint commands),
adapters (tcp-client, display-terminal), client-desktop (end-to-end working).

ESP32: client-esp32 firmware with ILI9341 display over SPI, WiFi networking.
Display test verified on hardware — landscape orientation, text rendering works.

60 workspace tests, all passing.

crates/client-esp32/sdkconfig.defaults

@@ -0,0 +1,16 @@
+# K-Frame ESP32 firmware config
+
+# WiFi
+CONFIG_ESP_WIFI_STATIC_RX_BUFFER_NUM=10
+CONFIG_ESP_WIFI_DYNAMIC_RX_BUFFER_NUM=32
+CONFIG_ESP_WIFI_DYNAMIC_TX_BUFFER_NUM=32
+
+# Task stack sizes
+CONFIG_ESP_MAIN_TASK_STACK_SIZE=8192
+CONFIG_PTHREAD_TASK_STACK_SIZE_DEFAULT=8192
+
+# SPI
+CONFIG_SPI_MASTER_IN_IRAM=y
+
+# Use single large app partition (no OTA)
+CONFIG_PARTITION_TABLE_SINGLE_APP_LARGE=y