Make the Rust client the sole app

.dev-updater.ron

@@ -17,9 +17,7 @@ label: "AI Sessions",
 // three constants -- there is nothing here worth spawning a process for.
 resources: Ron("resources.ron"),
 
-// The two halves this checkout produces: the server a phone talks to, and
-// the app that talks to it. They are built in parallel -- this list is the
-// set, not a sequence, so nothing here should be read as an order.
+// The server and Rust app build in parallel.
 components: [
     Server(
         name: "server",
@@ -39,15 +37,8 @@ components: [
     ),
     Apk(
         name: "app",
-        // Release first: the first mode is the default, and the phone runs
-        // the release build -- a debuggable one runs Compose at a fraction
-        // of the speed. Each command below is run with the chosen mode as
-        // its last argument, which is exactly build-apk.sh's interface.
         modes: ["release", "debug"],
-        // Resolved against this directory, and run in `app/` -- the script
-        // cds to its own directory anyway, so the cwd is here to say where
-        // the app is rather than because the build needs it.
-        build: "app/build-apk.sh",
+        build: "./build-apk.sh",
         cwd: "app",
         // The Enroll button in this component's settings: prints the link
         // that enrols the phone against the server built here, for the
@@ -55,23 +46,4 @@ components: [
         // the terminal the QR would be printed on.
         enroll: "server/enroll-link.sh",
     ),
-    // E5 (RUST.md): app/shellApp packaged by the xtask instead of Gradle
-    // (cargo ndk -> javac -> d8 -> aapt2 -> zipalign -> apksigner), signed
-    // with the same release key as "app" above so the two can install
-    // over each other -- a separate component, not a mode of "app" above,
-    // because it is a different applicationId (com.example.aiapp.shell)
-    // built by a different tool from different sources. No `cwd`: it
-    // defaults to this checkout's root, which both the `cargo xtask`
-    // alias (`.cargo/config.toml`, resolved relative to the working
-    // directory cargo is run from) and `cargo xtask apk`'s own publishing
-    // step (`scripts/build/outputs/apk/<mode>/*.apk`, matching
-    // discover.rs's `*/build/outputs/apk/*/*.apk` pattern -- see apk.rs's
-    // module doc) both need. The publish directory is `scripts/build`
-    // rather than `scripts/xtask/build` for exactly that reason: the
-    // pattern is one directory deep, and the tool moved two on 2026-09-09.
-    Apk(
-        name: "shell",
-        modes: ["release", "debug"],
-        build: "cargo xtask apk",
-    ),
 ],