File the tag code into tagline.zig and draw tags beside bodies

With tags reduced to Texts, what is left of them is the computed prefix, the
default and saved tails, entering and leaving a tag and the headers: that goes
to tagline.zig, as acme keeps the tag half of a window in wind.c. Tag and
header drawing moves next to body drawing in body_layer.zig, and the tag hit
helpers go to tag_layer.zig with the Hit they read, where sameCell now also
tells the lines of a taller tag apart. The docs describe the tag as a Text.

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

1 files changed, 5 insertions, 5 deletions

diff --git a/test/pdf.zig b/test/pdf.zig
index 745ecb1a..3a592451 100644
--- a/test/pdf.zig
+++ b/test/pdf.zig
@@ -612,7 +612,7 @@ test "MuPDF pane renders, navigates, searches, and round-trips its page" {
     try std.testing.expectEqual(@as(u16, 0), pane.pdf.?.pan_y);
     try std.testing.expectEqual(@as(u16, 8), p.cell_pixels.w);
     try std.testing.expectEqual(@as(u16, 16), p.cell_pixels.h);
-    const initial_tag = try pardes.test_api.tagText(p, p.scratch.allocator(), pane);
+    const initial_tag = try pardes.tagline.tagText(p, p.scratch.allocator(), pane);
     const expected_tag = try std.fmt.allocPrint(p.scratch.allocator(), "{s} [1/{d}]{s}", .{ pane.pdf.?.path, pane.pdf.?.page_count, pane_tail });
     try std.testing.expectEqualStrings(expected_tag, initial_tag);
     try std.testing.expect(std.mem.endsWith(u8, initial_tag, pane_tail));
@@ -833,7 +833,7 @@ test "MuPDF pane renders, navigates, searches, and round-trips its page" {
         revision_before_toggle,
         panes.Pdf.rasterForPage(&pane.pdf.?, pane.pdf.?.page).?.revision,
     );
-    const height_tag = try pardes.test_api.tagText(p, p.scratch.allocator(), pane);
+    const height_tag = try pardes.tagline.tagText(p, p.scratch.allocator(), pane);
     const expected_height_tag = try std.fmt.allocPrint(p.scratch.allocator(), "{s} [{d}/{d}]{s}", .{ pane.pdf.?.path, pane.pdf.?.page + 1, pane.pdf.?.page_count, pane_tail });
     try std.testing.expectEqualStrings(expected_height_tag, height_tag);
     for (p.panes) |slot| {
@@ -1250,7 +1250,7 @@ test "PdfTint cycles pane-local state without adding tag clutter" {
         return error.MissingPdfTintBuiltin;
 
     try std.testing.expectEqual(PdfTintMode.filtered, pv.tint);
-    const initial_tag = try pardes.test_api.tagText(p, p.scratch.allocator(), pane);
+    const initial_tag = try pardes.tagline.tagText(p, p.scratch.allocator(), pane);
     try std.testing.expect(std.mem.startsWith(u8, initial_tag, pv.path));
     try std.testing.expect(std.mem.endsWith(u8, initial_tag, " PdfSections PdfTint Collapse Del"));
     try std.testing.expect(std.mem.indexOf(u8, initial_tag, "filtered") == null);
@@ -1263,7 +1263,7 @@ test "PdfTint cycles pane-local state without adding tag clutter" {
         null,
     ));
     try std.testing.expectEqual(PdfTintMode.full, pv.tint);
-    const full_tag = try pardes.test_api.tagText(p, p.scratch.allocator(), pane);
+    const full_tag = try pardes.tagline.tagText(p, p.scratch.allocator(), pane);
     try std.testing.expectEqualStrings(initial_tag, full_tag);
     try std.testing.expect(std.mem.indexOf(u8, full_tag, "full") == null);
 
@@ -1291,7 +1291,7 @@ test "PdfTint cycles pane-local state without adding tag clutter" {
         null,
     ));
     try std.testing.expectEqual(PdfTintMode.disabled, pv.tint);
-    const disabled_tag = try pardes.test_api.tagText(p, p.scratch.allocator(), pane);
+    const disabled_tag = try pardes.tagline.tagText(p, p.scratch.allocator(), pane);
     try std.testing.expectEqualStrings(initial_tag, disabled_tag);
     try std.testing.expect(std.mem.indexOf(u8, disabled_tag, "disabled") == null);
     try std.testing.expect(pardes.test_api.runBuiltin(