DragonX compatibility: crash fixes, reorg detection, server failover, sync perf

- Fix Rust FFI panics with catch_unwind wrappers and safe CString handling
- Handle poisoned mutex/RwLock from prior panics instead of crashing
- Add stuck sync detection (10s stall threshold) and chain reorg user prompt
- Add "Skip Verification" button to seed phrase wizard
- Update payment URIs from hush: to drgx:
- Update branding strings throughout UI
- Add all 6 lite servers (lite, lite1-5.dragonx.is) with random selection
- Add server connectivity probing to skip unreachable servers
- Reuse Tokio runtime across block fetch batches to reduce sync overhead
- Update Cargo.lock dependencies

.travis.yml

@@ -1,41 +1,41 @@
-language: rust
-rust:
-  - 1.41.0
-
-matrix:
-  include:
-    # works on Precise and Trusty
-    - os: linux
-    - dist: xenial
-      compiler: clang
-      addons:
-        apt:
-          sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-precise-3.7']
-          packages: ['clang-3.7', 'g++-5']
-
-before_script:
-  - export PATH="$PATH:$HOME/.cargo/bin"
-
-
-before_install:
- - rustup component add rustfmt --toolchain 1.41.0-x86_64-unknown-linux-gnu
- - gem install bundler
- - curl -sSL https://sh.rustup.rs | sh -s -- -y --default-toolchain=stable --profile=minimal
- - export PATH="$PATH:$HOME/.cargo/bin"
- - sudo add-apt-repository ppa:beineri/opt-qt-5.14.2-xenial -y
- - sudo apt-get update -qq
- - sudo apt-get install libsodium-dev pkg-config
- - sudo apt-get install qt514base libgl1-mesa-dev
- - source /opt/qt514/bin/qt514-env.sh
- - chmod +x res/libsodium/buildlibsodium.sh
-
-script:
- - qmake -v
- - clang++ -v
- - g++-5 -v
- - qmake silentdragon-lite.pro CONFIG+=release -spec linux-clang
- - make CC=clang CXX=clang++ -j2
- - make distclean
- - qmake silentdragon-lite.pro CONFIG+=release -spec linux-g++
- - res/libsodium/buildlibsodium.sh
- - make CC=gcc-5 CXX=g++-5 -j2
+language: rust
+rust:
+  - 1.41.0
+
+matrix:
+  include:
+    # works on Precise and Trusty
+    - os: linux
+    - dist: xenial
+      compiler: clang
+      addons:
+        apt:
+          sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-precise-3.7']
+          packages: ['clang-3.7', 'g++-5']
+
+before_script:
+  - export PATH="$PATH:$HOME/.cargo/bin"
+
+
+before_install:
+ - rustup component add rustfmt --toolchain 1.41.0-x86_64-unknown-linux-gnu
+ - gem install bundler
+ - curl -sSL https://sh.rustup.rs | sh -s -- -y --default-toolchain=stable --profile=minimal
+ - export PATH="$PATH:$HOME/.cargo/bin"
+ - sudo add-apt-repository ppa:beineri/opt-qt-5.14.2-xenial -y
+ - sudo apt-get update -qq
+ - sudo apt-get install libsodium-dev pkg-config
+ - sudo apt-get install qt514base libgl1-mesa-dev
+ - source /opt/qt514/bin/qt514-env.sh
+ - chmod +x res/libsodium/buildlibsodium.sh
+
+script:
+ - qmake -v
+ - clang++ -v
+ - g++-5 -v
+ - qmake silentdragon-lite.pro CONFIG+=release -spec linux-clang
+ - make CC=clang CXX=clang++ -j2
+ - make distclean
+ - qmake silentdragon-lite.pro CONFIG+=release -spec linux-g++
+ - res/libsodium/buildlibsodium.sh
+ - make CC=gcc-5 CXX=g++-5 -j2