Terminal.zig is terminal.zig: a file of functions and no fields takes a namespace's lowercase name

The last of the deferred renames, now that the tty and theme agents have landed: panes.terminal at its importers, the alias lines in Text.zig and File.zig and panes.zig's own uses following. dump.zig's Terminal struct, a dump record, is not this. The served sources list and docs/design.typ name the new file. test/perf.zig's references change, so the three perf baselines take its new harness id with their numbers as recorded. No behaviour changes.

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

1 files changed, 2 insertions, 2 deletions

diff --git a/src/layout.zig b/src/layout.zig
index 28f567bc..28f3d270 100644
--- a/src/layout.zig
+++ b/src/layout.zig
@@ -607,7 +607,7 @@ fn blankRows(p: *const Pardes, id: usize) u16 {
         // The empty line after a final newline shows nothing.
         (panes.File.nlines(p.gpa, f) -| @intFromBool(std.mem.endsWith(u8, f.content, "\n"))) -| f.scroll
     else if (pane.isTerminal())
-        @as(usize, panes.Terminal.gridCursor(pane).y) + 1
+        @as(usize, panes.terminal.gridCursor(pane).y) + 1
     else
         rows;
     return rows -| @as(u16, @intCast(@min(used, rows)));
@@ -742,7 +742,7 @@ pub fn splitBelow(p: *Pardes, src_id: usize, nw: *Pane) void {
     // Its tag may wrap to more than one row: the rows under it are its body.
     const tag_h = @max(BOX_H, src.tag_rows);
     const body: u16 = if (src_h > tag_h) src_h - tag_h else 1;
-    const cur: u16 = if (!src.isTerminal()) body / 2 else panes.Terminal.gridCursor(src).y + 1;
+    const cur: u16 = if (!src.isTerminal()) body / 2 else panes.terminal.gridCursor(src).y + 1;
     // cap keep so a content-full source still leaves the new pane a tag +
     // a few body rows (an Alt-n from a full shell was born 0 rows tall)
     // ...and the source min_body_rows of its own (exec.placeNew), when it