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/Cargo.toml

@@ -0,0 +1,30 @@
+[package]
+name = "client-esp32"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+domain = { path = "../domain" }
+protocol = { path = "../protocol" }
+client-domain = { path = "../client-domain" }
+client-application = { path = "../client-application" }
+
+esp-idf-hal = "0.46"
+esp-idf-svc = { version = "0.52", features = ["experimental"] }
+esp-idf-sys = "0.37"
+
+mipidsi = "0.10"
+embedded-graphics = "0.8"
+embedded-text = "0.7"
+embedded-hal-bus = "0.3"
+
+serde = { version = "1.0", default-features = false, features = [
+    "derive",
+    "alloc",
+] }
+postcard = { version = "1.1", default-features = false, features = ["alloc"] }
+
+log = "0.4"
+
+[build-dependencies]
+embuild = "0.33"