The Tutor pane is named +Tutor in the session's directory, not /Tutor

Every other generated pane is named `<dir>/+<Name>`: +New, +Errors, the
outputs. Tutor alone was a bare `/Tutor`, a real path at the root, so a Save
would try to write there, and /index listed it as if it were a file. A scan
of the other generated panes found no other bare absolute name. The three
snapshot goldens that show the Tutor tag were re-recorded by name (tutor,
builtins, leader).

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

4 files changed, 16 insertions, 4 deletions

diff --git a/src/pardes.zig b/src/pardes.zig
index 7fddf19f..eb9aa11f 100644
--- a/src/pardes.zig
+++ b/src/pardes.zig
@@ -1112,6 +1112,16 @@ test "first document fallback splits like Tty from the originating pane" {
     };
 }
 
+test "the Tutor pane is named +Tutor in the session's directory, never a bare path at the root" {
+    const p = try Pardes.init(std.testing.allocator, .{ .tty_only = true });
+    defer p.deinit();
+    const session = "/project/src";
+    @memcpy(p.session_dir[0..session.len], session);
+    p.session_dir_len = session.len;
+    const tutor = try p.openTutorView(1);
+    try std.testing.expectEqualStrings("/project/src/+Tutor", tutor.file.?.path);
+}
+
 test "first document keeps its originating shell and only opens a column when it fits" {
     for ([_]u16{ 199, 200 }) |width| {
         const p = try Pardes.init(std.testing.allocator, .{ .tty_only = true, .cols = width, .rows = 32 });
@@ -6573,7 +6583,9 @@ pub const Pardes = struct {
     pub fn openTutorView(p: *Pardes, id: usize) !*Pane {
         const content = try p.gpa.dupe(u8, tutor_text);
         errdefer p.gpa.free(content);
-        const path = try p.gpa.dupe(u8, "/Tutor");
+        // A generated pane, named as every one is: `+` in the session's
+        // directory, never a bare path Save could write at the root.
+        const path = try std.fs.path.join(p.gpa, &.{ p.sessionDir(), "+Tutor" });
         errdefer p.gpa.free(path);
         const history = try panes.File.History.create(p.gpa);
         errdefer p.gpa.destroy(history);
diff --git a/test/snapshots/builtins.golden b/test/snapshots/builtins.golden
index 6b79d47f..0f13ed7c 100644
--- a/test/snapshots/builtins.golden
+++ b/test/snapshots/builtins.golden
@@ -27,7 +27,7 @@
 |16:
 == snap tutor-from-index grid=120x67 cursor=7,16
 |10:      1 pardes builtins under SPC h                                                                                Tutor
-|15:    /Tutor Save Tty Collapse Del
+|15:    /tmp/pardes-snap/builtins/cwd/+Tutor Save Tty Collapse Del
 |16:      1
 |17:      2                                PARDES TUTOR
 |18:      3                      tmux + vi + acme, from scratch.
diff --git a/test/snapshots/leader.golden b/test/snapshots/leader.golden
index 52528cde..bde9f7bf 100644
--- a/test/snapshots/leader.golden
+++ b/test/snapshots/leader.golden
@@ -18,7 +18,7 @@
 |11:      6
 == snap tutor grid=100x41 cursor=7,12
 |6:      1 pardes builtins under SPC h                                                            Tutor
-|11:    /Tutor Save Tty Collapse Del
+|11:    /tmp/pardes-snap/leader/cwd/+Tutor Save Tty Collapse Del
 |12:      1
 |13:      2                                PARDES TUTOR
 |14:      3                      tmux + vi + acme, from scratch.
diff --git a/test/snapshots/tutor.golden b/test/snapshots/tutor.golden
index 1be72b87..2976f99a 100644
--- a/test/snapshots/tutor.golden
+++ b/test/snapshots/tutor.golden
@@ -4,7 +4,7 @@
 |   /tmp/pardes-snap/tutor/cwd Tty+bash Save Mode Filter Collapse Del          /tmp/pardes-snap/tutor/cwd Tty+bash Save Mode Filter Collapse Del
 |  ls                                                                 Tutor   ls
 |
-|   /Tutor Save Tty Collapse Del
+|   /tmp/pardes-snap/tutor/cwd/+Tutor Save Tty Collapse Del
 |     1
 |     2                                PARDES TUTOR
 |     3                      tmux + vi + acme, from scratch.