A root exec or look that fails logs its err against the pane it ran at

`err - exec: ...` said nothing of where the line ran; the root's exec and
look run at the keyboard's pane, and their err now names it, as a click
there would.

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

1 files changed, 7 insertions, 1 deletions

diff --git a/src/ninep/events.zig b/src/ninep/events.zig
index fb0141f4..98799774 100644
--- a/src/ninep/events.zig
+++ b/src/ninep/events.zig
@@ -187,7 +187,13 @@ pub fn noteError(p: *Pardes, req: Req, reply: Reply) void {
     if (req.node & tree.sources.archive_node != 0) file = "src";
     if (req.node != pardes.filesystem.os_root and req.node & pardes.filesystem.os_node == 0 and req.node & tree.sources.archive_node == 0) {
         if (tree.Node.target(req.node)) |t| switch (t) {
-            .top => |f| file = f.fileName(),
+            .top => |f| {
+                file = f.fileName();
+                // The root's exec or look ran at the keyboard's pane: its
+                // failure is that pane's, as a click there would be.
+                if ((f == .exec or f == .look) and p.fs.ran_at != 0)
+                    serial = std.fmt.bufPrint(&name, "{d}", .{p.fs.ran_at}) catch "-";
+            },
             .col => |c| {
                 serial = "-";
                 file = (if (c.file == .dir)