WIP/DUBIOUS: docker build script + android_logger migration (build broken)

Docker-based build pipeline (scripts/build-android-docker.sh) replacing
hcloud VMs — NOT verified working yet. Also includes android_logger
migration that may have introduced build issues. All changes after
264ef9c are suspect.

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

crates/wzp-android/Cargo.toml

@@ -27,9 +27,8 @@ libc = "0.2"
 jni = { version = "0.21", default-features = false }
 rand = { workspace = true }
 rustls = { version = "0.23", default-features = false, features = ["ring"] }
-android_logger = "0.14"
-log = "0.4"
-tracing-log = "0.2"
+
+
 
 [build-dependencies]
 cc = "1"

crates/wzp-android/src/jni_bridge.rs

@@ -1,5 +1,10 @@
 //! JNI bridge for Android — thin layer between Kotlin and the WzpEngine.
 
+// Force system allocator — Rust's default jemalloc conflicts with Android's
+// scudo allocator on Android 16 MTE devices, causing SIGSEGV in je_arena_palloc.
+#[global_allocator]
+static ALLOC: std::alloc::System = std::alloc::System;
+
 use std::panic;
 use std::sync::Once;
 
@@ -34,20 +39,10 @@ static INIT_LOGGING: Once = Once::new();
 /// Initialize tracing → Android logcat (tag "wzp_android").
 /// Safe to call multiple times — only the first call takes effect.
 fn init_logging() {
-    INIT_LOGGING.call_once(|| {
-        // Use android_logger directly — tracing_subscriber::registry() allocates
-        // a sharded_slab which causes SIGSEGV on Android 16 MTE devices.
-        // android_logger is lightweight and doesn't trigger scudo crashes.
-        let _ = std::panic::catch_unwind(|| {
-            android_logger::init_once(
-                android_logger::Config::default()
-                    .with_max_level(log::LevelFilter::Info)
-                    .with_tag("wzp"),
-            );
-            // Bridge tracing → log so our tracing::info! macros work
-            let _ = tracing_log::LogTracer::init();
-        });
-    });
+    // NOTE: Both tracing-android (sharded_slab SIGSEGV) and android_logger
+    // (jemalloc/scudo conflict in CString::new) crash on Android 16 MTE.
+    // Skip logging initialization entirely — tracing macros silently no-op.
+    // Kotlin-side logging (Log.i/Log.w) still works for debugging.
 }
 
 #[unsafe(no_mangle)]