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/src/main.rs

@@ -0,0 +1,45 @@
+mod adapters;
+mod config;
+mod hal;
+mod tasks;
+
+use client_domain::{BoundingBox, DisplayPort};
+use esp_idf_hal::peripherals::Peripherals;
+use log::info;
+
+fn main() {
+    esp_idf_svc::sys::link_patches();
+    esp_idf_svc::log::EspLogger::initialize_default();
+
+    info!("=== K-Frame ESP32 ===");
+
+    let peripherals = Peripherals::take().unwrap();
+
+    let mut display = hal::display::init(hal::display::DisplayHardware {
+        spi: peripherals.spi2,
+        sclk: peripherals.pins.gpio18.into(),
+        mosi: peripherals.pins.gpio23.into(),
+        cs: peripherals.pins.gpio26.into(),
+        dc: peripherals.pins.gpio21.into(),
+        rst: peripherals.pins.gpio22.into(),
+    });
+    info!("Display initialized");
+
+    display.fill_background(config::SCREEN).unwrap();
+    display.draw_text(
+        "K-Frame",
+        10, 10,
+        BoundingBox::new(10, 10, 220, 40),
+    ).unwrap();
+    display.draw_text(
+        "Display test OK",
+        10, 60,
+        BoundingBox::new(10, 60, 220, 40),
+    ).unwrap();
+    display.flush().unwrap();
+
+    info!("Display test complete — looping forever");
+    loop {
+        std::thread::sleep(std::time::Duration::from_secs(1));
+    }
+}