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, 4 insertions, 3 deletions

diff --git a/src/detached/server.zig b/src/detached/server.zig
index e33354cf..b75fa5ad 100644
--- a/src/detached/server.zig
+++ b/src/detached/server.zig
@@ -4,6 +4,7 @@ const builtin = @import("builtin");
 const libc = std.c;
 const posix = std.posix;
 const pardes = @import("../pardes.zig");
+const dump = @import("../dump.zig");
 const wire = @import("wire.zig");
 
 const host_io = @import("../host_io.zig");
@@ -233,7 +234,7 @@ pub const Session = struct {
     }
 
     pub fn restore(s: *Session, bytes: []const u8) !void {
-        const replacement = try s.core.restore(bytes);
+        const replacement = try dump.restore(s.core, bytes);
         s.cancelWorkers();
         for (0..s.ptys.len) |pane| s.closePty(@intCast(pane));
         s.harvest();
@@ -1129,7 +1130,7 @@ pub fn run(init: std.process.Init, opts: pardes.Options, name: []const u8) !void
     const 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);
     var session: Session = .{
         .gpa = gpa,
@@ -1197,7 +1198,7 @@ test "detached queued results preserve current requests and are discarded before
     try std.testing.expectEqual(current_id, s.lsp_task.?.id);
     try std.testing.expectEqual(current_id, s.core.lsp_wait.?.id);
 
-    try s.core.dumpState();
+    try dump.dumpState(s.core);
     const saved = try gpa.dupe(u8, s.core.dump_out.?);
     defer gpa.free(saved);
     while (s.core.nextEffect()) |_| {}