Compact date format, move action buttons to the left

Dates render as jj/mm/aa instead of the API's ISO yyyy-mm-dd -- saves
width in a table already packed with 8 compte columns. Actions column
(edit pencil, link icon) moves from the right end to the first
column. Column-hover crosshair logic is unaffected: it walks colSpan
positions dynamically rather than assuming a fixed index.

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

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

@@ -234,6 +234,13 @@
       formatEur(v) {
         return v === null || v === undefined ? '' : EUR.format(v);
       },
+      // jj/mm/aa -- shorter than the API's ISO yyyy-mm-dd, saves column
+      // width in a table already packed with 8 compte columns.
+      formatDate(iso) {
+        if (!iso) return '';
+        const [y, m, d] = iso.split('-');
+        return d + '/' + m + '/' + y.slice(2);
+      },
       typeLabel(t) {
         return TYPE_LABELS[t] || t;
       },