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, 3 insertions, 2 deletions

diff --git a/src/tty/tty.zig b/src/tty/tty.zig
index 89a476f2..fe968650 100644
--- a/src/tty/tty.zig
+++ b/src/tty/tty.zig
@@ -5,6 +5,7 @@ const posix = std.posix;
 const libc = std.c;
 const vaxis = @import("vaxis");
 const pardes = @import("../pardes.zig");
+const dump = @import("../dump.zig");
 const tracy = @import("../tracy.zig");
 const look = @import("../look.zig");
 const message = pardes.Messages.Message;
@@ -700,7 +701,7 @@ fn localSession(
     var core = if (options.load_path) |lp| blk: {
         const bytes = try filesystem.readFile(gpa, lp);
         defer gpa.free(bytes);
-        break :blk try pardes.Pardes.initFromDump(allocs.pardes, options, bytes);
+        break :blk try pardes.dump.initFromDump(allocs.pardes, options, bytes);
     } else try pardes.Pardes.init(allocs.pardes, options);
     defer core.deinit();
 
@@ -802,7 +803,7 @@ 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;
             };