Make a pane's tag a Text edited with the body's own keys

The tag was a fixed buffer with its own one-line editor, a cursor measured
across the path, and a hijack of the body's mode while it was typed into.
It is now the pane's second Text: its own characters after the computed
prefix (path, dirty marker, PDF page), which is never stored in it, so a
rename or a dirty marker never moves its cursor. Normal and insert mode are
the body's, undo included; `:` moves the keyboard between body and tag, the
tag remembers its cursor and starts on Save, and executing a word from it
hands the keyboard back. The mouse still sees the prefix: a sweep selects
across it and a click on the path drafts a new name.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/src/dump.zig b/src/dump.zig
index 2fb9ce80..7112e1f0 100644
--- a/src/dump.zig
+++ b/src/dump.zig
@@ -621,7 +621,7 @@ pub fn dumpState(p: *Pardes) !void {
             try pardes.panes.Image.dumpPane(p, arena, pane, tag, body, scroll, iv.path, iv.raw)
         else
             try pardes.panes.Terminal.dumpPane(pane, arena, tag, body, scroll);
-        dp.tag_tail = if (pane.tag_init) pane.tagSlice() else null;
+        dp.tag_tail = pane.tag.own;
         dump_panes[panes_len] = dp;
         panes_len += 1;
     }