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, 5 insertions, 5 deletions

diff --git a/src/pdf_view.zig b/src/pdf_view.zig
index 106252a0..9b623183 100644
--- a/src/pdf_view.zig
+++ b/src/pdf_view.zig
@@ -1962,7 +1962,7 @@ fn refreshCleanSections(core: *pardes.Pardes, state: *State) void {
         core.gpa.free(content);
         return;
     }
-    core.invalidateLookHover(remembered.pane);
+    look.invalidateLookHover(core, remembered.pane);
     File.setContent(core, file, content);
     const rows = File.lineCount(file.content);
     file.scroll = @min(file.scroll, rows - 1);
@@ -2009,7 +2009,7 @@ fn rearmCleanSections(
     result.nsel = 0;
     pane.search_pane = remembered.pane;
     pane.search_row = null;
-    core.armLookWalk(remembered.pane);
+    look.armLookWalk(core, remembered.pane);
     core.active = id;
     return true;
 }
@@ -2049,7 +2049,7 @@ pub fn openSections(core: *pardes.Pardes, id: usize) void {
     core.active = id;
     pane.search_pane = free;
     pane.search_row = null;
-    core.armLookWalk(free);
+    look.armLookWalk(core, free);
 }
 
 const SectionsOwner = struct {
@@ -2098,7 +2098,7 @@ pub fn lookSection(
     const destination = owner.state.sectionDestination(core.pdf_gpa, at.col - 1) orelse return true;
     switch (destination) {
         .internal => |internal| {
-            core.clearNavigationSelection(owner.pane);
+            look.clearNavigationSelection(core, owner.pane);
             revealOutlineDestination(core, owner.pane, internal);
         },
         .external => |uri| if (uri.len <= 256) core.emit(.{ .open_link = .from(uri) }),
@@ -2282,7 +2282,7 @@ pub fn probeAt(
     const state = &(pane.pdf orelse return null);
     if (state.document.linkAt(core.pdf_gpa, page, point) catch null) |found| {
         var link = found;
-        if (core.pdfLinkLocation(pane, link) != null) {
+        if (look.pdfLinkLocation(core, pane, link) != null) {
             const quads = core.pdf_gpa.alloc(pdf.Quad, 1) catch {
                 link.deinit(core.pdf_gpa);
                 return null;