v1.7.3: drop tun2proxy fork dependency (#271)

Move from yyoyoian-pixel/tun2proxy fork (with patched JNI signature)
to canonical tun2proxy 0.7.21 from crates.io with feature flag
"udpgw". Cargo.toml [patch.crates-io] section removed entirely.

The Android side now resolves tun2proxy_run_with_cli_args at runtime
via dlsym from libtun2proxy.so, which is the upstream maintainer's
recommended path for callers that need full CLI flexibility.
mhrv-rs builds the CLI string in MhrvVpnService and passes it through
Native.runTun2proxy → src/android_jni.rs → dlsym → tun2proxy.

Future tun2proxy upgrades are now a single Cargo version bump.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: therealaleph

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "mhrv-rs"
-version = "1.7.2"
+version = "1.7.3"
 edition = "2021"
 description = "Rust port of MasterHttpRelayVPN -- DPI bypass via Google Apps Script relay with domain fronting"
 license = "MIT"

Cargo.toml

@@ -14,8 +14,8 @@ android {
         applicationId = "com.therealaleph.mhrv"
         minSdk = 24 // Android 7.0 — covers 99%+ of live devices.
         targetSdk = 34
-        versionCode = 147
-        versionName = "1.7.2"
+        versionCode = 148
+        versionName = "1.7.3"
 
         // Ship all four mainstream Android ABIs:
         //   - arm64-v8a      — 95%+ of real-world Android phones since 2019

android/app/build.gradle.kts

@@ -0,0 +1,4 @@
+<!-- see docs/changelog/v1.1.0.md for the file format: Persian, then `---`, then English. -->
+• حذف نیاز به فورک tun2proxy ([#271](https://github.com/therealaleph/MasterHttpRelayVPN-RUST/pull/271)): v1.7.0 از یه فورک شخصی tun2proxy (با پارامتر `udpgw_server` در JNI) استفاده می‌کرد چون upstream هنوز feature flag `udpgw` رو منتشر نکرده بود. حالا که tun2proxy 0.7.21 رسماً روی crates.io با feature flag `udpgw` در دسترسه + maintainer toolchain CLI API رو به‌عنوان مسیر صحیح برای کاربران Android معرفی کرد، فورک رو حذف می‌کنیم. روش جدید: mhrv-rs از طریق `dlsym` در زمان اجرا تابع `tun2proxy_run_with_cli_args` رو از `libtun2proxy.so` resolve می‌کنه و CLI args ساده می‌فرسته (`--proxy socks5://127.0.0.1:1081 --tun-fd <fd> --udpgw-server 198.18.0.1:7300 ...`). نه فورک، نه `[patch.crates-io]`، نه commit SHA. وقتی tun2proxy update می‌شه، فقط نسخهٔ crates.io رو bump می‌کنیم. ممنون از @yyoyoian-pixel
+---
+• Drop the tun2proxy fork dependency ([#271](https://github.com/therealaleph/MasterHttpRelayVPN-RUST/pull/271)): v1.7.0 used a personal fork of tun2proxy (with a `udpgw_server` parameter added to the JNI signature) because upstream hadn't published the `udpgw` feature flag yet. With tun2proxy 0.7.21 now on crates.io with `udpgw` feature flag, and the upstream maintainer pointing callers at the C-style CLI API as the recommended path for Android, we drop the fork. New approach: mhrv-rs resolves `tun2proxy_run_with_cli_args` from `libtun2proxy.so` at runtime via `dlsym` and passes a simple CLI string (`--proxy socks5://127.0.0.1:1081 --tun-fd <fd> --udpgw-server 198.18.0.1:7300 ...`). No fork, no `[patch.crates-io]`, no pinned SHA. Future tun2proxy upgrades are a single Cargo version bump. Thanks @yyoyoian-pixel