fix(cli): Normalize Linux ARM64 arch name for sentry-cli binary lookup

The JVM can report `os.arch` as `"arm64"` on some systems (e.g., Docker
on Apple Silicon), but the bundled binary is named `sentry-cli-Linux-aarch64`.
Normalize both ARM (`arm64`/`aarch64`) and x86 (`amd64`/`x86_64`) arch
names to match the bundled binary naming convention.

Fixes #1168

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: romtsn

plugin-build/src/main/kotlin/io/sentry/android/gradle/SentryCliProvider.kt

@@ -134,7 +134,14 @@ internal object SentryCliProvider {
     val osArch = System.getProperty("os.arch")
     return when {
       "mac" in osName -> "Darwin-universal"
-      "linux" in osName -> if (osArch == "amd64") "Linux-x86_64" else "Linux-$osArch"
+      "linux" in osName -> {
+        val normalizedArch = when (osArch) {
+          "amd64", "x86_64" -> "x86_64"
+          "arm64", "aarch64" -> "aarch64"
+          else -> osArch
+        }
+        "Linux-$normalizedArch"
+      }
       "win" in osName -> "Windows-i686.exe"
       else -> null
     }

plugin-build/src/test/kotlin/io/sentry/android/gradle/SentryCliProviderTest.kt

@@ -159,6 +159,24 @@ class SentryCliProviderTest {
     assertEquals("Linux-x86_64", getCliSuffix())
   }
 
+  @Test
+  @WithSystemProperty(["os.name", "os.arch"], ["linux", "x86_64"])
+  fun `getCliSuffix on linux x86_64 returns Linux-x86_64`() {
+    assertEquals("Linux-x86_64", getCliSuffix())
+  }
+
+  @Test
+  @WithSystemProperty(["os.name", "os.arch"], ["linux", "arm64"])
+  fun `getCliSuffix on linux arm64 returns Linux-aarch64`() {
+    assertEquals("Linux-aarch64", getCliSuffix())
+  }
+
+  @Test
+  @WithSystemProperty(["os.name", "os.arch"], ["linux", "aarch64"])
+  fun `getCliSuffix on linux aarch64 returns Linux-aarch64`() {
+    assertEquals("Linux-aarch64", getCliSuffix())
+  }
+
   @Test
   @WithSystemProperty(["os.name", "os.arch"], ["linux", "armV7"])
   fun `getCliSuffix on linux armV7 returns Linux-armV7`() {