/index names a command's pane kind cmd, not term: a script picking a terminal by kind no longer picks a pane with no shell

A command pane runs one line and takes no typing; a script choosing
`$2=="term"` to type into got one. Its kind is now cmd; a shell's stays
term.

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

3 files changed, 16 insertions, 2 deletions

diff --git a/src/fs-help.txt b/src/fs-help.txt
index 576e2dee..1f683667 100644
--- a/src/fs-help.txt
+++ b/src/fs-help.txt
@@ -1,7 +1,7 @@
 Pardes control filesystem
 =========================
 README      this summary; the pardes book's Scripting and Reference chapters have the rest
-index       a line per pane: serial kind(text|term|pdf|image) dirty name column; names hold blanks: rsplit(maxsplit=1)
+index       a line per pane: serial kind(text|term|cmd|pdf|image) dirty name column; names hold blanks: rsplit(maxsplit=1)
 status      pid, version and pane count
 look        write a line: a right click on it at the active pane; read: the serials it touched (this open's)
 exec        write a line: a middle click, a builtin or a shell line; read the same (every exec file)
diff --git a/src/ninep/pane.zig b/src/ninep/pane.zig
index 47fdd755..b9fa2857 100644
--- a/src/ninep/pane.zig
+++ b/src/ninep/pane.zig
@@ -157,6 +157,9 @@ pub fn kindOf(pane: *const Pane) []const u8 {
     if (pane.file != null) return "text";
     if (pane.pdfPath() != null) return "pdf";
     if (pane.image != null) return "image";
+    // A command's pane is no shell to type into: a script choosing a
+    // terminal by kind must not pick one.
+    if (pane.command != null) return "cmd";
     return "term";
 }
 
@@ -1906,3 +1909,13 @@ test "a pane's tagexec runs a word as a click in its tag, and reads back what it
     var want: [16]u8 = undefined;
     try testing.expectEqualStrings(try std.fmt.bufPrint(&want, "{d}\n", .{serial}), rd(p, Node.of(serial, .tagexec), 0, 64).bytes);
 }
+
+test "index names a command's pane cmd, a shell's term" {
+    const p = try withFile(testing.allocator, "x\n");
+    defer p.deinit();
+    try testing.expectEqual(Status.ok, wr(p, Node.of(serialOf(p), .exec), "true\n").reply.status);
+    const ran = p.panes[p.paneBySerial(p.fs.results[0]).?].?;
+    try testing.expectEqualStrings("cmd", kindOf(ran));
+    const shell = try p.newShell(p.freeSlot().?, "/tmp");
+    try testing.expectEqualStrings("term", kindOf(shell));
+}
diff --git a/test/fs.py b/test/fs.py
index 483ef320..f24e2550 100644
--- a/test/fs.py
+++ b/test/fs.py
@@ -393,7 +393,8 @@ def discovery(binary, embedded=False):
             while client.read('/log').decode().count('\nexit ') <= seen:
                 assert time.monotonic() < deadline, 'diff -u never ended'
                 time.sleep(.05)
-            ran = [row.split()[0] for row in client.read('/index').decode().splitlines() if row.split()[1] == 'term']
+            # A command's pane is kind cmd, not term: no shell to type into.
+            ran = [row.split()[0] for row in client.read('/index').decode().splitlines() if row.split()[1] == 'cmd']
             shown = client.read(f'/pane/{ran[-1]}/body').decode()
             assert '+++ diff-new.txt' in shown and '\t' not in shown, shown
             client.write(f'/pane/{ran[-1]}/look', b'+TWO\n')