A builtin's Verbose announcement is logged only when it succeeds

A failure said while it ran (Exit's refusal, a Del refused) or later by
the host (a Save's write, a Dump's) left `msg N Save` in the log as if it
had worked. The announcement's record is remembered and taken back out
on either, unless a follower read it already. A refused pane/new logs its
err alone, and a failed Dump says its reason in words (`file not found`,
not `FileNotFound`) so its msg goes and the err is the one record.

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

1 files changed, 3 insertions, 2 deletions

diff --git a/src/pardes.zig b/src/pardes.zig
index 98b8819c..739d5bf2 100644
--- a/src/pardes.zig
+++ b/src/pardes.zig
@@ -5219,8 +5219,9 @@ pub const Pardes = struct {
         var what: [limits.host_path_cap + 8]u8 = undefined;
         const operation = std.fmt.bufPrint(&what, "Dump {s}", .{path}) catch "Dump";
         p.reportError(p.active, operation, err);
-        var buf: [256]u8 = undefined;
-        const said = std.fmt.bufPrint(&buf, "{s}: {s}", .{ operation, @errorName(err) }) catch "Dump failed";
+        // In the words the message row has, so the write's err is the one
+        // record of it (its msg goes: 9p_io, dropMessage).
+        const said = if (p.panes[p.active]) |pane| pane.msg[0..pane.msg_len] else "Dump failed";
         const kept = @import("Messages.zig").clip(said, p.fs.late_failure.len);
         @memcpy(p.fs.late_failure[0..kept.len], kept);
         p.fs.late_failure_len = @intCast(kept.len);