Move looking out of pardes.zig into look.zig

Pure move, no behaviour change (acme keeps this in look.c): expanding the
word under a click (ExpandedWord, expandedWord, expandedSel, cursorWordSel),
the n/N walk (LookFrom, lookEdge, lookStand, lookWalkPanes, lookPast,
wholeRowSpan, lookSpanIn, lookWalk, landLookSpot, noteLookSource,
armLookWalk), search results (Search, SearchStart, submitSearch,
lookFirstHit, runSearch, searchStep, jumpResult), the look-hover preview
(LookHoverWait, LookHoverPreview, FileWordSpan, PdfWordPreview,
invalidateLookHover, cancelLookHover, lookHoverPane, noteLookHover,
refreshLookHoverFromRaw, advanceLookHover) and lookAt with its targets
(focusPaneLine, selectSpan, openPaneTarget, focusPaneByPath,
clearNavigationSelection, resolveLookTarget, locationText,
canonicalLookLocation, pdfLinkLocation, followPdfLink), with five tests, go
verbatim to the end of look.zig after its word and target resolution.

The methods become free functions taking `p: *Pardes`; their 143 call sites
change from `p.lookAt(..)` to `look.lookAt(p, ..)` (tests reach them as
`pardes.look.x`). Inside look.zig the moved code's `look.` prefix drops.

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

1 files changed, 2 insertions, 2 deletions

diff --git a/test/perf.zig b/test/perf.zig
index 7d3b5e3d..6ce8f014 100644
--- a/test/perf.zig
+++ b/test/perf.zig
@@ -445,7 +445,7 @@ fn measure(op: Op, fx: Fixture, path: []const u8, expected_bytes: usize, reps: u
             const core = try boot();
             defer core.deinit();
             const t0 = nowNs();
-            core.lookAt(0, path);
+            pardes.look.lookAt(core, 0, path);
             pump(core);
             _ = try frame(core);
             const dt = nowNs() -| t0;
@@ -459,7 +459,7 @@ fn measure(op: Op, fx: Fixture, path: []const u8, expected_bytes: usize, reps: u
 
     const core = try boot();
     defer core.deinit();
-    core.lookAt(0, path);
+    pardes.look.lookAt(core, 0, path);
     pump(core);
     const id = filePane(core) orelse return error.OpenDidNotOpenFile;
     core.active = id;