fix: lint all targets on windows (#3963)

Native Windows lint and check only clippy-checked the herdr binary, while macOS and Linux run clippy across all targets. Enable --all-targets on Windows and gate the Unix-only test helpers that this exposed so Windows check matches the Unix one.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/api/server/pane_graphics_stream.rs b/src/api/server/pane_graphics_stream.rs
index 0df857fc..c0dac5ab 100644
--- a/src/api/server/pane_graphics_stream.rs
+++ b/src/api/server/pane_graphics_stream.rs
@@ -662,6 +662,7 @@ mod tests {
         line
     }
 
+    #[cfg(unix)]
     fn assert_server_stream_owner(owner: &str) {
         assert!(owner.starts_with("pane.graphics.stream:"));
     }