build: fix Windows cmake example failures

The cmake examples were failing at runtime on Windows CI for two
reasons.

The static library was installed as "libghostty-vt.a" on all
platforms, but on Windows the DLL import library is also placed in
zig-out/lib/ as "ghostty-vt.lib". The CMakeLists.txt expected the
platform-native name "ghostty-vt.lib" for the static lib, so it
picked up the tiny DLL import lib instead, silently producing a
dynamically-linked executable. That executable then failed at
runtime because the DLL was not on PATH.

Fix this by installing the static library as "ghostty-vt-static.lib"
on Windows to avoid the name collision, and updating CMakeLists.txt
to match. For the shared (DLL) example, add zig-out/bin to PATH in
the CI run step so the DLL can be found at runtime.

.github/workflows/test.yml

@@ -294,6 +294,7 @@ jobs:
           $name = "${{ matrix.dir }}" -replace '-','_'
           $exe = "example/${{ matrix.dir }}/build/Debug/${name}.exe"
           if (!(Test-Path $exe)) { $exe = "example/${{ matrix.dir }}/build/${name}.exe" }
+          $env:PATH = "${{ github.workspace }}/zig-out/bin;$env:PATH"
           & $exe
 
   build-cmake:

CMakeLists.txt

@@ -95,7 +95,13 @@ else()
 endif()
 
 # Static library name.
-set(GHOSTTY_VT_STATIC_REALNAME "${CMAKE_STATIC_LIBRARY_PREFIX}ghostty-vt${CMAKE_STATIC_LIBRARY_SUFFIX}")
+# On Windows, the static lib is named "ghostty-vt-static.lib" to avoid
+# colliding with the DLL import library "ghostty-vt.lib".
+if(WIN32)
+    set(GHOSTTY_VT_STATIC_REALNAME "ghostty-vt-static.lib")
+else()
+    set(GHOSTTY_VT_STATIC_REALNAME "libghostty-vt.a")
+endif()
 set(GHOSTTY_VT_STATIC_LIBRARY "${ZIG_OUT_DIR}/lib/${GHOSTTY_VT_STATIC_REALNAME}")
 
 # Ensure the output directories exist so CMake doesn't reject the

build.zig

@@ -111,17 +111,21 @@ pub fn build(b: *std.Build) !void {
         b,
         &mod,
     );
-
     if (config.is_dep) {
         // If we're a dependency, we need to install everything as-is
         // so that dep.artifact("ghostty-vt-static") works.
         libghostty_vt_static.install(b.getInstallStep());
     } else {
         // If we're not a dependency, we rename the static lib to
-        // be idiomatic.
+        // be idiomatic. On Windows, we use a distinct name to avoid
+        // colliding with the DLL import library (ghostty-vt.lib).
+        const static_lib_name = if (config.target.result.os.tag == .windows)
+            "ghostty-vt-static.lib"
+        else
+            "libghostty-vt.a";
         b.getInstallStep().dependOn(&b.addInstallLibFile(
             libghostty_vt_static.output,
-            "libghostty-vt.a",
+            static_lib_name,
         ).step);
     }