fix(ci): statically link MinGW runtime for Windows builds

Adds -static-libgcc, -static-libstdc++, and static winpthread rustflags
for the x86_64-pc-windows-gnu target so the Windows binary no longer
depends on MinGW runtime DLLs absent on user machines. Also sets
OPENSSL_STATIC=1 on the build step to statically link OpenSSL.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: lklimek

.cargo/config.toml

@@ -10,6 +10,7 @@ rustflags = ["-C", "target-feature=-crt-static", "-C", "target-cpu=x86-64"]
 [target.x86_64-pc-windows-gnu]
 linker = "x86_64-w64-mingw32-gcc-posix"
 ar = "x86_64-w64-mingw32-ar"
+rustflags = ["-C", "link-args=-static-libgcc -static-libstdc++ -Wl,-Bstatic -lpthread -Wl,-Bdynamic"]
 
 [env]
 CC_x86_64_pc_windows_gnu = "x86_64-w64-mingw32-gcc-posix"

.github/workflows/release.yml

@@ -103,6 +103,8 @@ jobs:
           cargo build --release --target ${{ matrix.target }}
           mv target/${{ matrix.target }}/release/dash-evo-tool${{ matrix.ext }} dash-evo-tool/dash-evo-tool${{ matrix.ext }}
           if [ -f winlibs/sqlite3.dll ]; then cp winlibs/sqlite3.dll dash-evo-tool/sqlite3.dll; fi
+        env:
+          OPENSSL_STATIC: "1"
 
       - name: Package release
         run: |