ci: enhance sanitizer workflow

- Add ThreadSanitizer job for async/concurrent code (dash-spv, key-wallet)
- Expand path triggers to include all tested crates (dashcore, key-wallet, etc.)

Author: xdustinface

.github/workflows/sanitizer.yml

@@ -11,6 +11,11 @@ on:
       - 'key-wallet-ffi/**'
       - 'dash-spv-ffi/**'
       - 'dash-network-ffi/**'
+      - 'dashcore/**'
+      - 'dashcore_hashes/**'
+      - 'key-wallet/**'
+      - 'dash-spv/**'
+      - 'dash-network/**'
 
 permissions:
   contents: read
@@ -44,3 +49,22 @@ jobs:
           # Core crypto crates (unsafe optimizations)
           cargo +nightly test -Zbuild-std --target x86_64-unknown-linux-gnu \
             -p dashcore -p dashcore_hashes --lib --tests
+
+  tsan:
+    name: Thread Sanitizer
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: rust-src
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Run tests with TSAN
+        env:
+          RUSTFLAGS: "-Zsanitizer=thread -Cdebuginfo=2"
+          TSAN_OPTIONS: "second_deadlock_stack=1"
+        run: |
+          # Async/concurrent crates
+          cargo +nightly test -Zbuild-std --target x86_64-unknown-linux-gnu \
+            -p dash-spv -p key-wallet --lib --tests