feat(bridge): establish local pi status bridge

Deliver the initial local bridge, Noctalia v4/v5 adapters, desktop client, service unit, tests, and implementation documentation for persistent Pi status and control.

ui/src-tauri/Cargo.toml

@@ -0,0 +1,27 @@
+[package]
+name = "pi-status-ui"
+version = "0.1.0"
+description = "Standalone desktop client for Pi Status Bridge"
+authors = ["alex"]
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+# The `_lib` suffix may seem redundant but it is necessary
+# to make the lib name unique and wouldn't conflict with the bin name.
+# This seems to be only an issue on Windows, see https://github.com/rust-lang/cargo/issues/8519
+name = "pi_status_ui_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2", features = [] }
+
+[dependencies]
+tauri = { version = "2", features = [] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+tokio = { version = "1", features = ["io-util", "net", "rt", "macros"] }
+
+[target.'cfg(not(any(target_os = "android", target_os = "ios")))'.dependencies]
+tauri-plugin-single-instance = "2"