Fix pasting bug.

build.zig

@@ -196,6 +196,22 @@ pub fn build(b: *std.Build) void {
     settings_tests.root_module.addImport("ghostty-vt", ghostty.module("ghostty-vt"));
     test_step.dependOn(&b.addRunArtifact(settings_tests).step);
 
+    // Paste safety is its own root, and for a sharper reason than the rest:
+    // when it says no it says so silently — the terminal simply does not
+    // receive what you pasted — so the rule that decides has to be checkable
+    // without a display. It reaches libghostty-vt for the encoder and nothing
+    // else; the clipboard round trip around it is GTK's and stays in
+    // `Terminal.zig`.
+    const paste_tests = b.addTest(.{
+        .root_module = b.createModule(.{
+            .root_source_file = b.path("src/paste.zig"),
+            .target = target,
+            .optimize = optimize,
+        }),
+    });
+    paste_tests.root_module.addImport("ghostty-vt", ghostty.module("ghostty-vt"));
+    test_step.dependOn(&b.addRunArtifact(paste_tests).step);
+
     // The shortcut table is its own root for the same reason: chords are parsed
     // from text, written back out as text, and looked up by a key press, and
     // all three are pure data. It reaches libghostty-vt for the key enum and