Fix footer freezing after Année filter / Aller à / retour à Toutes

v-if="loading" swaps out <div ref="tableWrap"> for a brand new DOM
node every time loading toggles true -> false. mounted() only attaches
the scroll listener once, to whichever wrap existed at mount time --
enterYearMode(), exitYearMode(), and jumpToYear() all trigger that
swap, silently orphaning the listener on the old (now-detached) node.
After any of those three, scrolling stopped calling checkEdges()/
detectCurrentYear() at all, freezing the footer's year totals.

ensureScrollListener() re-attaches (idempotently, via a dataset flag)
after every such transition. Verified: the wrap element does change
identity across jumpToYear(), and the new element picks up the
listener and fetches totals for the newly-visible year correctly.

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

@@ -605,6 +605,22 @@
           this.checkEdges();
         });
       },
+      // mounted() only runs once, but `v-if="loading"` swaps out the
+      // <div ref="tableWrap"> for a fresh DOM node every time loading
+      // toggles true -> false (enterYearMode/exitYearMode/jumpToYear all
+      // do this) -- the old node's scroll listener goes with it, silently
+      // leaving the new one with no listener at all (checkEdges() and
+      // detectCurrentYear(), and so the footer, stop responding to
+      // scroll). Call this after every such transition, once the new
+      // wrap exists; the dataset flag makes it a no-op if the element is
+      // unchanged.
+      ensureScrollListener() {
+        const wrap = this.$refs.tableWrap;
+        if (wrap && !wrap.dataset.figliScrollBound) {
+          wrap.dataset.figliScrollBound = '1';
+          wrap.addEventListener('scroll', this.onScroll, { passive: true });
+        }
+      },
       async loadCurrentYearTotals() {
         if (!this.currentYear) return;
         this.currentYearLoading = true;
@@ -638,6 +654,7 @@
         }
         await this.$nextTick();
         if (this.$refs.tableWrap) this.$refs.tableWrap.scrollTop = 0;
+        this.ensureScrollListener();
         this.detectCurrentYear();
       },
       // Back to "Toutes" -- resume the normal sliding window, re-centered
@@ -648,6 +665,7 @@
         await this.$nextTick();
         const wrap = this.$refs.tableWrap;
         if (wrap) wrap.scrollTop = wrap.scrollHeight;
+        this.ensureScrollListener();
         this.detectCurrentYear();
       },
       // "Aller à" -- a one-shot navigation shortcut, distinct from the
@@ -686,6 +704,7 @@
         await this.$nextTick();
         const wrap = this.$refs.tableWrap;
         if (wrap) wrap.scrollTop = 0;
+        this.ensureScrollListener();
         this.detectCurrentYear();
         this.checkEdges();
       },
@@ -713,8 +732,8 @@
       jQuery(document).on('dialog:afterclose', () => this.reloadWindow());
       await this.$nextTick();
       const wrap = this.$refs.tableWrap;
+      this.ensureScrollListener();
       if (wrap) {
-        wrap.addEventListener('scroll', this.onScroll, { passive: true });
         // Start scrolled to the most recent data (the window is centered
         // on "today", so that's the bottom of what's loaded).
         wrap.scrollTop = wrap.scrollHeight;