+Errors with no room anywhere logs its text rather than fail the Edit

Edit's p and = put their output in +Errors, and when its column had no
room the placement refusal failed the whole Edit. +Errors now tries every
column with room, the last first, and with none its text is logged as msg
records, a line each; the Edit succeeds.

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

1 files changed, 6 insertions, 0 deletions

diff --git a/src/ninep/pane.zig b/src/ninep/pane.zig
index 3307eb47..791cb797 100644
--- a/src/ninep/pane.zig
+++ b/src/ninep/pane.zig
@@ -649,6 +649,12 @@ pub fn appendErrors(p: *Pardes, id: usize, text: []const u8) ?usize {
         return null;
     };
     exec.placeNew(p, id, id, free, .errors);
+    // No column had room for it (it closes at the step's end): the text is
+    // logged instead, a msg a line, so it is not lost and nothing fails.
+    if (p.unplaced.isSet(free)) {
+        var lines = std.mem.splitScalar(u8, std.mem.trimEnd(u8, text, "\n"), '\n');
+        while (lines.next()) |line| events.noteMessage(p, pane.serial, line[0..@min(line.len, pardes.Messages.LoggedMessage.cap)]);
+    }
     return text.len;
 }