Move text editing out of pardes.zig into edit.zig

Pure move, no behaviour change (acme keeps this in text.c): which text a
pane edits and how it maps to the screen (editText, editTextEol,
setEditText, paneCursorLines, paneByteAtDisplay, pinPaneCursor,
flatSurface, paneWrapWidth), insert mode (enterInsert, handleInsert,
insertKey, insertTab, exitInsert, clampFileCursor), the d/c/y/p edit
operations with replace, case, join, indent, comment, number, textobjects
and surround, undo and redo, yank/clipboard/paste (setYank, setClipboard,
ClipRequest, clipRequest, typeToTty, applyPaste, clipYank), and the pointer
selections as text (PointerTextSelection, pointerTextSelection,
capturePointerSelection, paneText, pointerSourceLine, selectionText,
spanHas, currentSelText), with four tests, go verbatim to edit.zig.

The methods become free functions taking `p: *Pardes`; calls change from
`p.insertKey(..)` to `edit.insertKey(p, ..)` (pardes.zig, body_layer.zig,
selection_pipe.zig, builtins.zig, test/hxdiff.zig, test/perf.zig). In
executeNormalAction the `.edit => |edit|` capture becomes `|op|`, since it
would now shadow the edit import. test/lspbench.zig's first anchor follows
its needle into src/edit.zig.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/test/hxdiff.zig b/test/hxdiff.zig
index 22d8067d..e79a6bb6 100644
--- a/test/hxdiff.zig
+++ b/test/hxdiff.zig
@@ -488,7 +488,7 @@ fn runCase(arena: std.mem.Allocator, case: Case, pane_kind: []const u8) !Result
         // the cursor's empty row below the output (see Pardes.shellRows), so
         // its line list is exactly a file content's — join it and you have the
         // same bytes, trailing newline included, with nothing to patch up.
-        const lines = try core.paneCursorLines(pane);
+        const lines = try pardes.edit.paneCursorLines(core, pane);
         var text_len: usize = if (lines.len == 0) 0 else lines.len - 1;
         for (lines) |ln| text_len = std.math.add(usize, text_len, ln.len) catch return error.OutOfMemory;
         const joined = try arena.alloc(u8, text_len);