fix: clear the Gradle 10 deprecation warnings in the build scripts

Every build printed "Deprecated Gradle features were used in this build,
making it incompatible with Gradle 10". With --warning-mode all that was
five distinct Kotlin DSL delegated-property deprecations, all in our own
scripts:

- `val x by extra(...)` / `val x: T by extra` in the root script, for the
  opt-in Sonar gate that buildscript {} publishes and the body reads. Now
  extra.set("x", v) and extra["x"] as T.
- `val x by getting { }` for eight of quartz's KMP source sets. Now
  getByName("x") { }, which is what commons already used. None of those
  vals were referenced, so the local binding goes away with them.
- `val x by tasks.registering { }` and the typed
  `by tasks.registering(T::class) { }`, thirteen tasks across quartz,
  commons, cli, geode, nestsClient and desktopApp. Now
  tasks.register("x") { } and tasks.register<T>("x") { }, which return the
  same TaskProvider, so the dependsOn / finalizedBy references to them are
  unchanged.

`./gradlew --warning-mode all help` is now silent, and all nineteen
converted tasks still register and run.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0123kXtseu4X18hL3GMDcdER

build.gradle.kts

@@ -9,18 +9,18 @@ import java.util.Properties
 // compiles this buildscript {} section in an earlier stage that can't see the
 // file's imports (hence the qualified Properties) or share code with the body,
 // but it can publish values — the gate is computed once here and read below
-// via `by extra`.
+// via the project's extra properties.
 buildscript {
     val localProperties = File(rootDir, "local.properties")
-    val sonarProperties by extra(
+    val sonarProperties =
         java.util.Properties().apply {
             if (localProperties.exists()) localProperties.inputStream().use { load(it) }
-        },
+        }
-    )
+    extra.set("sonarProperties", sonarProperties)
-    val sonarEnabled by extra(
+    val sonarEnabled =
         sonarProperties.getProperty("sonar.host.url") != null &&
-            gradle.startParameter.taskNames.any { it.substringAfterLast(":") in setOf("sonar", "sonarqube") },
+            gradle.startParameter.taskNames.any { it.substringAfterLast(":") in setOf("sonar", "sonarqube") }
-    )
+    extra.set("sonarEnabled", sonarEnabled)
     if (sonarEnabled) {
         repositories {
             gradlePluginPortal()
@@ -110,9 +110,9 @@ subprojects {
 // `./gradlew sonar` behaves exactly like passing them via -Dsonar.xxx=... on the
 // command line. sonar.projectKey/projectName default to the root project name
 // ("Amethyst") and only need overriding in local.properties if desired.
-val sonarEnabled: Boolean by extra
+val sonarEnabled = extra["sonarEnabled"] as Boolean
 if (sonarEnabled) {
-    val sonarProperties: Properties by extra
+    val sonarProperties = extra["sonarProperties"] as Properties
     apply(plugin = "org.sonarqube")
 
     sonarProperties

cli/build.gradle.kts

@@ -110,7 +110,7 @@ application {
 // JVM decodes each one as ASCII (every byte > 0x7F → U+FFFD), and amy
 // then signs a kind:7 whose `content` is four replacement characters.
 // Whitenoise rejects it with "Invalid reaction content".
-val patchAmyLauncherCharset by tasks.registering {
+val patchAmyLauncherCharset = tasks.register("patchAmyLauncherCharset") {
     val appName = application.applicationName
     val startScriptsTask = tasks.named("startScripts")
     dependsOn(startScriptsTask)

commons/build.gradle.kts

@@ -278,7 +278,7 @@ tasks.withType<Test>().configureEach {
 // there. Commons gains this gate once FeedDefinitionSerializer.kt has been
 // migrated off Jackson; future commonMain code must not reintroduce JVM-only
 // JSON / HTTP deps.
-val verifyKmpPurity by tasks.registering {
+val verifyKmpPurity = tasks.register("verifyKmpPurity") {
     group = "verification"
     description = "Fails if iOS-targeted source sets import JVM-only deps."
     val checkedDirs =

desktopApp/build.gradle.kts

@@ -254,7 +254,7 @@ compose.desktop {
 // The arch is selected at task-execution time from the host JVM's os.arch, so
 // the same task builds the correct AppImage on both x86_64 and aarch64 hosts.
 // BUILDING.md documents local-dev fetch.
-val createReleaseAppImage by tasks.registering(Exec::class) {
+val createReleaseAppImage = tasks.register<Exec>("createReleaseAppImage") {
     group = "compose desktop"
     description = "Package createReleaseDistributable output into a Linux AppImage via appimagetool."
     dependsOn("createReleaseDistributable")
@@ -330,7 +330,7 @@ val createReleaseAppImage by tasks.registering(Exec::class) {
 // proguarded jkeychain-1.1.0-*.jar with all 117 KB intact), so this task is
 // a regression guard, not a workaround. It's wired onto every release task so
 // it fails the build immediately if the .so disappears.
-val verifyJkeychainNativeSurvivesProguard by tasks.registering {
+val verifyJkeychainNativeSurvivesProguard = tasks.register("verifyJkeychainNativeSurvivesProguard") {
     description = "Fail the release build if osxkeychain.so is stripped from proguarded output (would break macOS Keychain at runtime)"
     group = "verification"
     dependsOn("proguardReleaseJars")
@@ -395,7 +395,7 @@ listOf(
 // into the .app) so the subsequent bundle signing seals already-signed code.
 // Runs only on macOS with the Developer ID identity exported — a no-op on every
 // other leg and on unsigned local/PR builds.
-val signMacJarNatives by tasks.registering {
+val signMacJarNatives = tasks.register("signMacJarNatives") {
     description = "Codesign macOS Mach-O natives embedded in bundled jars before the .app is sealed + notarized"
     group = "build"
     dependsOn("proguardReleaseJars")

geode/build.gradle.kts

@@ -22,7 +22,7 @@ kotlin {
 // Generate a BuildConfig.kt carrying the app version from the catalog so
 // RelayInfo.VERSION (reported over NIP-11) tracks releases automatically
 // instead of being a hand-bumped literal.
-val generateVersionFile by tasks.registering {
+val generateVersionFile = tasks.register("generateVersionFile") {
     val versionValue = libs.versions.app.get()
     val outDir = layout.buildDirectory.dir("generated/version/kotlin")
     inputs.property("version", versionValue)

nestsClient/build.gradle.kts

@@ -154,7 +154,7 @@ val hangInteropCacheDir =
 val moqRelayVersion = "0.10.25"
 val moqTokenCliVersion = "0.5.23"
 
-val interopInstallMoqRelay by tasks.registering(Exec::class) {
+val interopInstallMoqRelay = tasks.register<Exec>("interopInstallMoqRelay") {
     description = "cargo install moq-relay $moqRelayVersion (interop)"
     group = "interop"
     commandLine(
@@ -178,7 +178,7 @@ val interopInstallMoqRelay by tasks.registering(Exec::class) {
     doFirst { hangInteropCacheDir.asFile.mkdirs() }
 }
 
-val interopInstallMoqTokenCli by tasks.registering(Exec::class) {
+val interopInstallMoqTokenCli = tasks.register<Exec>("interopInstallMoqTokenCli") {
     description = "cargo install moq-token-cli $moqTokenCliVersion (interop)"
     group = "interop"
     commandLine(
@@ -201,7 +201,7 @@ val interopInstallMoqTokenCli by tasks.registering(Exec::class) {
     doFirst { hangInteropCacheDir.asFile.mkdirs() }
 }
 
-val interopBuildSidecars by tasks.registering(Exec::class) {
+val interopBuildSidecars = tasks.register<Exec>("interopBuildSidecars") {
     description = "cargo build --release for nestsClient/tests/hang-interop sidecars"
     group = "interop"
     workingDir = hangInteropDir.asFile
@@ -226,7 +226,7 @@ val interopBuildSidecars by tasks.registering(Exec::class) {
     outputs.dir(hangInteropDir.dir("target/release"))
 }
 
-val interopBuildHangSidecars by tasks.registering {
+val interopBuildHangSidecars = tasks.register("interopBuildHangSidecars") {
     description = "Build all hang-interop binaries (sidecars + moq-relay + moq-token)."
     group = "interop"
     dependsOn(interopBuildSidecars, interopInstallMoqRelay, interopInstallMoqTokenCli)
@@ -305,7 +305,7 @@ fun resolveBunBinary(): String {
 fun resolveNpxBinary(): String =
     System.getenv("NPX_BIN") ?: System.getProperty("npxBin") ?: "npx"
 
-val interopBuildBrowserHarness by tasks.registering(Exec::class) {
+val interopBuildBrowserHarness = tasks.register<Exec>("interopBuildBrowserHarness") {
     description = "bun install && bun build for the browser interop harness"
     group = "interop"
     workingDir = browserInteropDir.asFile
@@ -325,7 +325,7 @@ val interopBuildBrowserHarness by tasks.registering(Exec::class) {
     outputs.dir(browserInteropDir.dir("dist"))
 }
 
-val interopInstallPlaywrightChromium by tasks.registering(Exec::class) {
+val interopInstallPlaywrightChromium = tasks.register<Exec>("interopInstallPlaywrightChromium") {
     description = "Install Playwright Chromium + dependencies for the browser interop harness"
     group = "interop"
     workingDir = browserInteropDir.asFile

quartz/build.gradle.kts

@@ -304,11 +304,11 @@ kotlin {
             dependsOn(appleMain)
         }
 
-        val iosArm64Main by getting {
+        getByName("iosArm64Main") {
             dependsOn(iosMain.get())
         }
 
-        val iosSimulatorArm64Main by getting {
+        getByName("iosSimulatorArm64Main") {
             dependsOn(iosMain.get())
         }
 
@@ -316,11 +316,11 @@ kotlin {
             dependsOn(appleTest)
         }
 
-        val iosArm64Test by getting {
+        getByName("iosArm64Test") {
             dependsOn(iosTest.get())
         }
 
-        val iosSimulatorArm64Test by getting {
+        getByName("iosSimulatorArm64Test") {
             dependsOn(iosTest.get())
         }
 
@@ -334,11 +334,11 @@ kotlin {
                 dependsOn(appleTest)
             }
 
-        val macosArm64Main by getting {
+        getByName("macosArm64Main") {
             dependsOn(macosMain)
         }
 
-        val macosArm64Test by getting {
+        getByName("macosArm64Test") {
             dependsOn(macosTest)
         }
 
@@ -355,11 +355,11 @@ kotlin {
                 dependsOn(nativeTest)
             }
 
-        val linuxX64Main by getting {
+        getByName("linuxX64Main") {
             dependsOn(linuxMain)
         }
 
-        val linuxX64Test by getting {
+        getByName("linuxX64Test") {
             dependsOn(linuxTest)
         }
     }
@@ -383,7 +383,7 @@ dependencies {
 // Scope: source sets whose code is compiled for at least one non-JVM
 // target. Excludes jvmAndroid, jvmMain, androidMain (and their tests),
 // where Jackson and OkHttp are legitimately used.
-val verifyKmpPurity by tasks.registering {
+val verifyKmpPurity = tasks.register("verifyKmpPurity") {
     group = "verification"
     description = "Fails if iOS-targeted source sets import JVM-only deps."
     val checkedDirs =