Give the pipe its own fields in Pipe

Not a pure move: state moves. Pardes's `pipe_seq` and `pipe_wait` become
Pipe.zig's own fields `seq` and `wait`, and Pardes embeds one as
`pipe: Pipe = .{}`. pipeRequest reads only the request in flight, so it now
takes `pipe: *const Pipe` and the four shells call
`core.pipe.pipeRequest(id)` (their Pipe imports go away again); the other
pipe functions still need the panes and keep `p: *Pardes`, writing
`p.pipe.seq/wait`. Field reads in dump.zig, the shells' tests and two test
files follow (`core.pipe_wait` becomes `core.pipe.wait`). No behaviour
change.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/detached/client.zig b/src/detached/client.zig
index 7cee790a..6476d521 100644
--- a/src/detached/client.zig
+++ b/src/detached/client.zig
@@ -884,7 +884,7 @@ test "detached selection pipe runs off the loop and returns through the attached
         while (try client.next()) |_| {}
         if (std.mem.eql(u8, pane.file.?.content, "ONE\ntwo\n")) break;
     } else return error.PipeDidNotComplete;
-    try testing.expect(h.core.pipe_wait == null);
+    try testing.expect(h.core.pipe.wait == null);
     try testing.expectEqual(@as(usize, 0), h.session.pipe_tasks.len);
     try h.pumpUntilShowsCore(&client);
 }