Split action icons into their own columns, tighten spacing, no crosshair

Link and edit icons get one dedicated column each instead of sharing
one text-align: center cell -- with a shared cell, a row with only the
edit icon (non-linkable types) centered differently than a row with
both icons, so pencils never lined up vertically across rows.
Separate columns line up by construction. Verified: identical left
offset (141px) for the edit icon across 15 consecutive rows.

Also: tighter cell padding (was using the table's default 0.6rem
horizontal padding, way more than an icon needs) and no column-hover
crosshair on these technical columns -- nothing meaningful to compare
across rows there.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

web/modules/custom/figli_compta_ledger/js/home.js

@@ -279,6 +279,12 @@
       onCellHover(evt) {
         const cell = evt.target.closest('td, th');
         if (!cell) return;
+        // No crosshair on the technical action columns (link/edit icons) --
+        // there's nothing to compare across rows there.
+        if (cell.classList.contains('actions-col')) {
+          this.clearColHover();
+          return;
+        }
         // Logical column position, not DOM sibling index: the totals row's
         // first cell has colspan="4", which shifts every cell.cellIndex
         // after it out of alignment with the body rows.