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, 3 insertions, 4 deletions

diff --git a/src/detached/server.zig b/src/detached/server.zig
index 9b23f8d6..2b9c9247 100644
--- a/src/detached/server.zig
+++ b/src/detached/server.zig
@@ -9,7 +9,6 @@ const wire = @import("wire.zig");
 
 const host_io = @import("../host_io.zig");
 const selection_pipe = @import("../selection_pipe.zig");
-const Pipe = @import("../Pipe.zig");
 
 const file_watch = @import("../file_watch.zig");
 
@@ -412,7 +411,7 @@ pub const Session = struct {
             s.core.update(.{ .pipe_resp = .{ .id = id, .success = false, .outputs = &.{} } });
             return;
         }
-        const request = Pipe.pipeRequest(s.core, id) orelse return;
+        const request = s.core.pipe.pipeRequest(id) orelse return;
         const job = selection_pipe.Job.copy(s.worker_gpa, request) catch |err| {
             s.core.update(.{ .pipe_resp = .{ .id = id, .success = false, .outputs = &.{} } });
             return s.core.reportError(s.core.active, "pipe", err);
@@ -1257,9 +1256,9 @@ test "detached worker setup failure completes requests without changing document
     s.core.update(.{ .key = .{ .cp = '|' } });
     s.core.update(.{ .key = .{ .cp = 't', .text = "tr a-z A-Z" } });
     s.core.update(.{ .key = .{ .cp = pardes.Key.enter } });
-    try std.testing.expect(s.core.pipe_wait != null);
+    try std.testing.expect(s.core.pipe.wait != null);
     while (s.core.nextEffect()) |effect| s.core.perform(effect);
-    try std.testing.expect(s.core.pipe_wait == null);
+    try std.testing.expect(s.core.pipe.wait == null);
     try std.testing.expectEqual(@as(usize, 0), s.pipe_tasks.len);
     try std.testing.expectEqualStrings("one\n", pane.file.?.content);
     try std.testing.expect(failing.has_induced_failure);