Move saving and loading a whole editor out of pardes.zig into dump.zig

Pure move, no behaviour change (acme keeps dump and load in rows.c):
dumpState, restore, initFromDump and initDump go verbatim to the end of
dump.zig, after the dump format they read and write. Inside dump.zig the
moved code's `dump.` prefix drops, so `Pane` there is the dump record; the
one editor pane it names is spelled `pardes.panes.Pane`, and its other
`panes.X` references become `pardes.panes.X` because dump.zig's own tests
use `panes` as a local name.

The methods become free functions taking `p: *Pardes`: `p.dumpState()`
becomes `dump.dumpState(p)`, `core.restore(bytes)` becomes
`dump.restore(core, bytes)` and `Pardes.initFromDump(..)` becomes
`dump.initFromDump(..)`, in pardes.zig, the shells, layout.zig,
Terminal.zig, builtins.zig and the tests (38 receiver rewrites plus the
initFromDump calls). The tag-tail restore helpers stay with the tag code.

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

1 files changed, 6 insertions, 5 deletions

diff --git a/src/gui/gui.zig b/src/gui/gui.zig
index 86c69ff6..f044ca17 100644
--- a/src/gui/gui.zig
+++ b/src/gui/gui.zig
@@ -6,6 +6,7 @@ const libc = std.c;
 const vaxis = @import("vaxis"); // test modes only: the stdin escape-seq parser
 const ghostty_vt = @import("ghostty-vt"); // 256-color palette for .index cells
 const pardes = @import("../pardes.zig");
+const dump = @import("../dump.zig");
 const config = @import("../config.zig");
 const look = @import("../look.zig");
 const message = pardes.Messages.Message;
@@ -1298,7 +1299,7 @@ test "GUI PTY Restore joins a real reader waiting for queue space" {
     const gpa = std.testing.allocator;
     var core = try pardes.Pardes.init(gpa, .{ .tty_only = true });
     defer core.deinit();
-    try core.dumpState();
+    try dump.dumpState(core);
     var workers: LspWorkers = .{};
     var queue: Queue = .{ .gpa = gpa, .lsp_allocator = gpa, .lsp_workers = &workers, .sdl_wake = false };
     defer queue.deinit();
@@ -1321,7 +1322,7 @@ test "GUI PTY Restore joins a real reader waiting for queue space" {
     try std.testing.expect(host_io.writeFd(child.file.handle, "printf 'after-full'; exit\n"));
     try PtyTests.waitBlocked(&queue);
     const old_serial = core.panes[0].?.serial;
-    const replacement = try core.restore(core.dump_out.?);
+    const replacement = try dump.restore(core, core.dump_out.?);
     shell.stopPtys();
     core.deinit();
     core = replacement;
@@ -2453,7 +2454,7 @@ fn localSession(
     var core = if (opts.load_path) |lp| blk: {
         const bytes = try @import("../fs.zig").readFile(gpa, lp);
         defer gpa.free(bytes);
-        break :blk try pardes.Pardes.initFromDump(allocs.pardes, opts, bytes);
+        break :blk try pardes.dump.initFromDump(allocs.pardes, opts, bytes);
     } else try pardes.Pardes.init(allocs.pardes, opts);
     defer core.deinit();
     core.native_images = true;
@@ -2559,7 +2560,7 @@ fn localSession(
                 break :blk;
             };
             defer gpa.free(bytes);
-            const nc = core.restore(bytes) catch |err| {
+            const nc = dump.restore(core, bytes) catch |err| {
                 core.reportError(core.active, "Restore", err);
                 break :blk;
             };
@@ -2772,7 +2773,7 @@ fn runGrid(init: std.process.Init, opts_in: pardes.Options) !void {
     const core = if (opts.load_path) |lp| blk: {
         const bytes = try @import("../fs.zig").readFile(gpa, lp);
         defer gpa.free(bytes);
-        break :blk try pardes.Pardes.initFromDump(allocs.pardes, opts, bytes);
+        break :blk try pardes.dump.initFromDump(allocs.pardes, opts, bytes);
     } else try pardes.Pardes.init(allocs.pardes, opts);
     defer core.deinit();
     if (opts.load_path == null)