diff --git a/Dockerfile b/Dockerfile
index fcd0375..502e520 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -43,6 +43,10 @@ COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
 COPY --from=builder --chown=nextjs:nodejs /app/src/generated ./src/generated
 COPY --from=builder /app/prisma ./prisma
 
+# Upload directory — mount a volume here for persistence: -v /host/uploads:/data/uploads
+RUN mkdir -p /data/uploads && chown nextjs:nodejs /data/uploads
+ENV UPLOAD_DIR=/data/uploads
+
 USER nextjs
 
 EXPOSE 3000
diff --git a/IMPROVEMENTS.md b/IMPROVEMENTS.md
new file mode 100644
index 0000000..bbd0ef7
--- /dev/null
+++ b/IMPROVEMENTS.md
@@ -0,0 +1,76 @@
+# Improvements & Known Issues
+
+## Critical Bugs
+
+- [x] **Photos 404 in Docker** — Upload wrote to `public/uploads/` (root-owned in standalone container). Fix: serve via `/api/photos/[filename]` from configurable `UPLOAD_DIR=/data/uploads`. Mount `/data/uploads` as Docker volume.
+- [x] **WHO curves invisible when baby has measurements** — `connectNulls` missing on percentile Lines; baby data rows with no p-values broke line segments.
+- [x] **Symptom icon missing** — `Activity` not registered in `event-icon.tsx` icon map.
+- [x] **OMS curves break when measurements exist** — same as above (connectNulls).
+
+## UI/UX Improvements
+
+### Dashboard
+- [ ] **Empty state for new users** — show "Commencez par enregistrer un repas →" callout when no events today
+- [ ] **Active timers show which baby** — add baby name if multiple babies in family
+
+### Growth
+- [ ] **Single-measurement chart** — currently blank; should show point + WHO curves + message
+- [ ] **"PC" label** — expand to "Périmètre crânien (PC)" on first use
+- [ ] **WHO percentile tooltip** — "P50 = médiane : 50% des bébés sont en dessous"
+- [ ] **Date field defaults to today** in add-measurement form
+- [ ] **PDF export percentile rank** — show baby's WHO band in PDF table
+
+### Stats
+- [ ] **Heatmap legend** — show actual count numbers (0, 1, 2, 3+) not just "Moins/Plus"
+- [ ] **Sleep timeline** — label "19h → 11h" window, make configurable
+- [ ] **Chart zero-data gaps** — distinguish "no data" vs "zero events" visually
+
+### Timeline
+- [ ] **Filter state sticky** — persist in URL param (`?type=BREASTFEED`)
+- [ ] **Inline note save feedback** — subtle "Enregistré ✓" flash on blur
+- [ ] **Photo in timeline** — make thumbnail clickable to open lightbox
+- [ ] **Select mode indicator** — show "3 sélectionnés · Supprimer" counter badge
+
+### Photos
+- [ ] **Square thumbnails** — force aspect-ratio: 1/1 with object-cover
+- [ ] **Lightbox wraps** — next on last → first photo; prev on first → last
+- [ ] **Delete from lightbox** — trash icon in lightbox → removes photo from event metadata
+
+### Search
+- [ ] **Results clickable** — link events to `/timeline?date=YYYY-MM-DD`, notes to `/notes?date=...`
+- [ ] **Result count header** — "X événements · Y notes"
+- [ ] **Date/type filter chips** on search results
+
+### Notes
+- [ ] **Unsaved indicator** — show "Non enregistré" dot while textarea is dirty
+- [ ] **Date jump input** — calendar picker to jump to any date (not just nav arrows)
+
+### Milestones
+- [ ] **Sort by date** within month, not creation order
+
+### Settings
+- [ ] **Pushover key eye toggle** — show/hide pasted key (copy pattern from API keys)
+- [ ] **API key delete confirmation** — "This will break integrations using this key"
+- [ ] **Accordion/tabs** — collapse long settings sections on mobile
+- [ ] **Invite link TTL** — show expiry date next to copy-link button
+
+### Event Modal
+- [ ] **Timer resume indicator** — show "Reprise depuis 12:34" when re-opening active timer
+- [ ] **Milk lot selection hint** — "Sélectionnez un lot qui sera marqué comme utilisé"
+- [ ] **Photo size feedback** — client-side 5MB validation with error message
+
+### Navigation
+- [ ] **Baby switcher accessibility** — add `aria-label="Sélectionner bébé"` to select
+- [ ] **Unsaved state warning** — prompt before navigating away from dirty notes
+
+## Feature Backlog
+
+- [ ] **Vaccination tracker** — dates, vaccine name, lot, next-due reminder + push alert
+- [ ] **Doctor visit log** — notes, prescriptions, next appointment date
+- [ ] **Teeth tracker** — visual mouth diagram, mark appearance date
+- [ ] **Baby schedule prediction** — "usually naps around 14h30" from historical patterns
+- [ ] **Growth chart in PDF** — embed chart image (jsPDF canvas) not just table
+- [ ] **Natural language digest** — "Emma feeds every 2h45 on average" weekly push
+- [ ] **Wellness check-in** — parent self-reports sleep/mood for postpartum monitoring
+- [ ] **Weight gain on-track indicator** — vs last weigh-in projected line on growth chart
+- [ ] **Contraction timer** — repurpose timer infra for pre-birth use
diff --git a/src/app/(app)/dashboard/page.tsx b/src/app/(app)/dashboard/page.tsx
index 783777a..c1e8617 100644
--- a/src/app/(app)/dashboard/page.tsx
+++ b/src/app/(app)/dashboard/page.tsx
@@ -600,6 +600,17 @@ export default function DashboardPage() {
         })}
       </div>
 
+      {/* Empty state for new users */}
+      {todayEvents.length === 0 && events.filter((e) => !e.endedAt && EVENT_CONFIG[e.type]?.hasTimer).length === 0 && (
+        <div className="bg-indigo-50 dark:bg-indigo-950 border border-indigo-100 dark:border-indigo-900 rounded-xl p-5 mb-4 flex items-start gap-3">
+          <span className="text-2xl">👶</span>
+          <div>
+            <p className="text-sm font-semibold text-indigo-800 dark:text-indigo-200">Bienvenue sur Grow !</p>
+            <p className="text-xs text-indigo-600 dark:text-indigo-400 mt-0.5">Commencez par enregistrer un repas, une couche ou un sommeil via les boutons ci-dessous.</p>
+          </div>
+        </div>
+      )}
+
       {/* Quick log */}
       <div className="space-y-4">
         {QUICK_LOG_GROUPS.map((group) => (
diff --git a/src/app/(app)/growth/page.tsx b/src/app/(app)/growth/page.tsx
index 4511f53..e687e03 100644
--- a/src/app/(app)/growth/page.tsx
+++ b/src/app/(app)/growth/page.tsx
@@ -159,7 +159,7 @@ export default function GrowthPage() {
   function openAddForm() {
     const last = logs.at(-1);
     setForm({
-      date: "",
+      date: format(new Date(), "yyyy-MM-dd"),
       weight: last?.weight ? (last.weight / 1000).toFixed(3) : "",
       height: last?.height ? String(last.height) : "",
       headCirc: last?.headCirc ? String(last.headCirc) : "",
@@ -343,7 +343,7 @@ export default function GrowthPage() {
                   step="0.1" min="30" max="120" placeholder="50" className={inputCls} />
               </div>
               <div>
-                <label className="block text-xs font-medium text-slate-600 dark:text-slate-300 mb-1.5">PC (cm)</label>
+                <label className="block text-xs font-medium text-slate-600 dark:text-slate-300 mb-1.5">PC — Périmètre crânien (cm)</label>
                 <input type="number" value={form.headCirc} onChange={(e) => setForm((f) => ({ ...f, headCirc: e.target.value }))}
                   step="0.1" min="20" max="60" placeholder="34" className={inputCls} />
               </div>
@@ -377,7 +377,7 @@ export default function GrowthPage() {
           )}
           {latest.headCirc && (
             <div className="bg-white dark:bg-slate-800 border border-slate-200 dark:border-slate-700 rounded-xl p-4 text-center">
-              <p className="text-xs text-slate-400 dark:text-slate-500 font-medium mb-1">Périmètre crânien</p>
+              <p className="text-xs text-slate-400 dark:text-slate-500 font-medium mb-1">Périmètre crânien (PC)</p>
               <p className="text-xl font-bold text-slate-900 dark:text-slate-100">{latest.headCirc} cm</p>
             </div>
           )}
@@ -405,13 +405,17 @@ export default function GrowthPage() {
 
       <div className="space-y-4">
         {/* Weight + WHO */}
-        {weightData.length > 1 && (
+        {weightData.length > 0 && (
           <div className="bg-white dark:bg-slate-800 border border-slate-200 dark:border-slate-700 rounded-xl p-5">
             <div className="flex items-center justify-between mb-4">
               <h3 className="text-sm font-semibold text-slate-700 dark:text-slate-200">Poids (kg)</h3>
               <div className="flex items-center gap-3 text-xs text-slate-400 dark:text-slate-500">
                 <span className="flex items-center gap-1"><span className="inline-block w-3 h-0.5 bg-indigo-600 rounded" />Bébé</span>
-                <span className="flex items-center gap-1"><span className="inline-block w-3 h-0.5 bg-slate-300 rounded" />OMS P3–P97</span>
+                <span className="flex items-center gap-1">
+                  <span className="inline-block w-3 h-0.5 bg-slate-300 rounded" />
+                  OMS P3–P97
+                  <span className="text-slate-300 dark:text-slate-600 text-[10px]" title="P50 = médiane : 50% des bébés ont un poids inférieur. P3–P97 représente la plage normale OMS.">ⓘ</span>
+                </span>
               </div>
             </div>
             <ResponsiveContainer width="100%" height={200}>
@@ -431,7 +435,7 @@ export default function GrowthPage() {
 
         <div className="grid md:grid-cols-2 gap-4">
           {/* Height */}
-          {heightData.length > 1 && (
+          {heightData.length > 0 && (
             <div className="bg-white dark:bg-slate-800 border border-slate-200 dark:border-slate-700 rounded-xl p-5">
               <h3 className="text-sm font-semibold text-slate-700 dark:text-slate-200 mb-4">Taille (cm)</h3>
               <ResponsiveContainer width="100%" height={160}>
@@ -447,7 +451,7 @@ export default function GrowthPage() {
           )}
 
           {/* Head circumference */}
-          {headData.length > 1 && (
+          {headData.length > 0 && (
             <div className="bg-white dark:bg-slate-800 border border-slate-200 dark:border-slate-700 rounded-xl p-5">
               <h3 className="text-sm font-semibold text-slate-700 dark:text-slate-200 mb-4">Périmètre crânien (cm)</h3>
               <ResponsiveContainer width="100%" height={160}>
diff --git a/src/app/(app)/milestones/page.tsx b/src/app/(app)/milestones/page.tsx
index 67f075f..d7ebfc6 100644
--- a/src/app/(app)/milestones/page.tsx
+++ b/src/app/(app)/milestones/page.tsx
@@ -82,6 +82,9 @@ function groupByMonth(milestones: Milestone[]) {
     }
     groups[seen[key]].items.push(m);
   }
+  for (const g of groups) {
+    g.items.sort((a, b) => new Date(a.date).getTime() - new Date(b.date).getTime());
+  }
   return groups;
 }
 
diff --git a/src/app/(app)/notes/page.tsx b/src/app/(app)/notes/page.tsx
index ba311b0..fdb73cb 100644
--- a/src/app/(app)/notes/page.tsx
+++ b/src/app/(app)/notes/page.tsx
@@ -47,6 +47,7 @@ export default function NotesPage() {
 
   const [currentDate, setCurrentDate] = useState<Date>(startOfDay(new Date()));
   const [draftContent, setDraftContent] = useState<string>("");
+  const [dirty, setDirty] = useState(false);
   const [isSaving, setIsSaving] = useState(false);
   const [saveError, setSaveError] = useState<string | null>(null);
   const [isDeleting, setIsDeleting] = useState(false);
@@ -99,6 +100,7 @@ export default function NotesPage() {
     if (isDayLoading) return;
     setDraftContent(currentNote?.content ?? "");
     setSaveError(null);
+    setDirty(false);
   }, [currentNote?.id, dateStr, isDayLoading]);
 
   function goToPrevDay() {
@@ -141,6 +143,7 @@ export default function NotesPage() {
       }
       qc.invalidateQueries({ queryKey: ["journal", babyId, dateStr] });
       qc.invalidateQueries({ queryKey: ["journal-recent", babyId] });
+      setDirty(false);
     } catch (e) {
       setSaveError(e instanceof Error ? e.message : "Erreur inconnue");
     } finally {
@@ -266,7 +269,7 @@ export default function NotesPage() {
                 <textarea
                   ref={textareaRef}
                   value={draftContent}
-                  onChange={(e) => setDraftContent(e.target.value)}
+                  onChange={(e) => { setDraftContent(e.target.value); setDirty(true); }}
                   onBlur={handleBlur}
                   placeholder="Notes du jour..."
                   rows={6}
@@ -289,6 +292,11 @@ export default function NotesPage() {
                     {saveError && (
                       <span className="text-xs text-red-500">{saveError}</span>
                     )}
+                    {dirty ? (
+                      <span className="text-xs text-amber-500">● Non enregistré</span>
+                    ) : !isSaving && draftContent.trim() ? (
+                      <span className="text-xs text-emerald-500">✓ Enregistré</span>
+                    ) : null}
                     <button
                       onClick={handleSave}
                       disabled={isSaving || !hasUnsavedChanges || (!draftContent.trim() && !currentNote)}
diff --git a/src/app/(app)/photos/page.tsx b/src/app/(app)/photos/page.tsx
index 1e3e90c..9aab3b6 100644
--- a/src/app/(app)/photos/page.tsx
+++ b/src/app/(app)/photos/page.tsx
@@ -58,11 +58,11 @@ export default function PhotosPage() {
   }
 
   function prev() {
-    setLightbox((lb) => lb && lb.index > 0 ? { ...lb, index: lb.index - 1 } : lb);
+    setLightbox((lb) => lb ? { ...lb, index: (lb.index - 1 + lb.events.length) % lb.events.length } : lb);
   }
 
   function next() {
-    setLightbox((lb) => lb && lb.index < lb.events.length - 1 ? { ...lb, index: lb.index + 1 } : lb);
+    setLightbox((lb) => lb ? { ...lb, index: (lb.index + 1) % lb.events.length } : lb);
   }
 
   const current = lightbox ? lightbox.events[lightbox.index] : null;
@@ -150,16 +150,14 @@ export default function PhotosPage() {
           <div className="flex items-center justify-between px-4 py-4 flex-shrink-0" onClick={(e) => e.stopPropagation()}>
             <button
               onClick={prev}
-              disabled={lightbox.index === 0}
-              className="w-10 h-10 flex items-center justify-center rounded-full bg-white/10 hover:bg-white/20 transition disabled:opacity-30"
+              className="w-10 h-10 flex items-center justify-center rounded-full bg-white/10 hover:bg-white/20 transition"
             >
               <ChevronLeft className="w-5 h-5 text-white" />
             </button>
             <span className="text-white/60 text-xs">{lightbox.index + 1} / {lightbox.events.length}</span>
             <button
               onClick={next}
-              disabled={lightbox.index === lightbox.events.length - 1}
-              className="w-10 h-10 flex items-center justify-center rounded-full bg-white/10 hover:bg-white/20 transition disabled:opacity-30"
+              className="w-10 h-10 flex items-center justify-center rounded-full bg-white/10 hover:bg-white/20 transition"
             >
               <ChevronRight className="w-5 h-5 text-white" />
             </button>
diff --git a/src/app/(app)/search/page.tsx b/src/app/(app)/search/page.tsx
index c6d352b..d88c5f1 100644
--- a/src/app/(app)/search/page.tsx
+++ b/src/app/(app)/search/page.tsx
@@ -8,6 +8,7 @@ import { useBaby } from "@/contexts/baby-context";
 import { format } from "date-fns";
 import { fr } from "date-fns/locale";
 import { Search, FileText, StickyNote } from "lucide-react";
+import Link from "next/link";
 
 interface SearchEvent {
   id: string;
@@ -108,6 +109,12 @@ export default function SearchPage() {
         <p className="text-sm text-slate-400 dark:text-slate-500 text-center py-12">Aucun résultat pour « {debouncedQ} »</p>
       )}
 
+      {debouncedQ.length >= 2 && !isFetching && hasResults && (
+        <p className="text-xs text-slate-400 mb-3">
+          {events.length} événement{events.length !== 1 ? "s" : ""} · {notes.length} note{notes.length !== 1 ? "s" : ""}
+        </p>
+      )}
+
       {events.length > 0 && (
         <div className="mb-6">
           <h2 className="text-xs font-semibold text-slate-400 dark:text-slate-500 uppercase tracking-wider mb-3 flex items-center gap-1.5">
@@ -119,7 +126,7 @@ export default function SearchPage() {
               const cfg = EVENT_CONFIG[ev.type];
               const summary = eventSummary(ev);
               return (
-                <div key={ev.id} className="flex items-start gap-3 px-4 py-3">
+                <Link key={ev.id} href={`/timeline?date=${ev.startedAt.slice(0, 10)}&type=${ev.type}`} className="flex items-start gap-3 px-4 py-3 cursor-pointer hover:bg-slate-50 dark:hover:bg-slate-700/50 transition rounded-lg">
                   <div className={`w-8 h-8 rounded-lg ${cfg.bgClass} flex items-center justify-center flex-shrink-0 mt-0.5`}>
                     <EventIcon name={cfg.icon} className={`w-4 h-4 ${cfg.colorClass}`} />
                   </div>
@@ -137,7 +144,7 @@ export default function SearchPage() {
                       {format(new Date(ev.startedAt), "d MMM yyyy HH:mm", { locale: fr })} · {ev.user.name}
                     </p>
                   </div>
-                </div>
+                </Link>
               );
             })}
           </div>
@@ -152,14 +159,14 @@ export default function SearchPage() {
           </h2>
           <div className="bg-white dark:bg-slate-800 border border-slate-200 dark:border-slate-700 rounded-xl overflow-hidden divide-y divide-slate-100 dark:divide-slate-700">
             {notes.map((note) => (
-              <div key={note.id} className="px-4 py-3">
+              <Link key={note.id} href={`/notes?date=${note.date.slice(0, 10)}`} className="block px-4 py-3 cursor-pointer hover:bg-slate-50 dark:hover:bg-slate-700/50 transition rounded-lg">
                 <p className="text-xs text-slate-400 dark:text-slate-500 mb-1">
                   {format(new Date(note.date), "d MMMM yyyy", { locale: fr })} · {note.user.name}
                 </p>
                 <p className="text-sm text-slate-700 dark:text-slate-200 line-clamp-3">
                   {highlight(note.content, debouncedQ)}
                 </p>
-              </div>
+              </Link>
             ))}
           </div>
         </div>
diff --git a/src/app/(app)/settings/page.tsx b/src/app/(app)/settings/page.tsx
index 4a42820..a3bc71b 100644
--- a/src/app/(app)/settings/page.tsx
+++ b/src/app/(app)/settings/page.tsx
@@ -5,7 +5,7 @@ import { signOut } from "next-auth/react";
 import React, { useState, useEffect } from "react";
 import { useBaby } from "@/contexts/baby-context";
 import { getThresholds, saveThresholds, requestPermission } from "@/lib/notifications";
-import { Copy, Check, Download, LogOut, Bell, Baby, Users, ChevronRight, FileText, Plus, Mail, Send, Key, Trash2, Eye, EyeOff, ExternalLink } from "lucide-react";
+import { Copy, Check, Download, LogOut, Bell, Baby, Users, ChevronRight, ChevronDown, FileText, Plus, Mail, Send, Key, Trash2, Eye, EyeOff, ExternalLink } from "lucide-react";
 
 function Section({ title, children }: { title: string; children: React.ReactNode }) {
   return (
@@ -18,6 +18,19 @@ function Section({ title, children }: { title: string; children: React.ReactNode
   );
 }
 
+function SectionCard({ title, children }: { title: string; children: React.ReactNode }) {
+  const [open, setOpen] = useState(true);
+  return (
+    <div className="bg-white dark:bg-slate-800 border border-slate-200 dark:border-slate-700 rounded-xl overflow-hidden">
+      <button onClick={() => setOpen((o) => !o)} className="w-full flex items-center justify-between px-5 py-4">
+        <h2 className="text-sm font-semibold text-slate-700 dark:text-slate-200">{title}</h2>
+        <ChevronDown className={`w-4 h-4 text-slate-400 transition-transform ${open ? "rotate-180" : ""}`} />
+      </button>
+      {open && <div className="px-5 pb-5">{children}</div>}
+    </div>
+  );
+}
+
 interface Family {
   id: string;
   name: string;
@@ -74,8 +87,8 @@ function ApiKeysSection() {
     setSaving(false);
   }
 
-  async function deleteKey(id: string) {
-    if (!confirm("Révoquer cette clé ?")) return;
+  async function deleteKey(id: string, name: string) {
+    if (!confirm(`Supprimer la clé "${name}" ? Toute intégration utilisant cette clé sera interrompue.`)) return;
     await fetch(`/api/api-keys/${id}`, { method: "DELETE" });
     qc.invalidateQueries({ queryKey: ["api-keys"] });
   }
@@ -88,7 +101,7 @@ function ApiKeysSection() {
   }
 
   return (
-    <Section title="Clés API">
+    <SectionCard title="Clés API">
       <div className="px-4 py-3 space-y-3">
         <div className="flex items-center justify-between">
           <p className="text-xs text-slate-500 dark:text-slate-400">
@@ -130,7 +143,7 @@ function ApiKeysSection() {
                     {k.lastUsedAt ? ` · utilisée ${new Date(k.lastUsedAt).toLocaleDateString("fr")}` : " · jamais utilisée"}
                   </p>
                 </div>
-                <button onClick={() => deleteKey(k.id)}
+                <button onClick={() => deleteKey(k.id, k.name)}
                   className="p-1.5 rounded text-slate-300 dark:text-slate-600 hover:text-red-500 transition">
                   <Trash2 className="w-3.5 h-3.5" />
                 </button>
@@ -175,7 +188,7 @@ function ApiKeysSection() {
           </button>
         )}
       </div>
-    </Section>
+    </SectionCard>
   );
 }
 
@@ -199,6 +212,7 @@ export default function SettingsPage() {
   );
 
   const [pushoverKey, setPushoverKey] = useState("");
+  const [showPushover, setShowPushover] = useState(false);
   const [savingPushover, setSavingPushover] = useState(false);
   const [pushoverMsg, setPushoverMsg] = useState<{ type: "ok" | "err"; text: string } | null>(null);
 
@@ -408,7 +422,7 @@ export default function SettingsPage() {
 
       <div className="space-y-4">
         {/* Babies */}
-        <Section title="Bébés">
+        <SectionCard title="Bébés">
           <div className="divide-y divide-slate-100 dark:divide-slate-700">
             {family?.babies.map((b) => (
               <div key={b.id}>
@@ -467,11 +481,11 @@ export default function SettingsPage() {
               </a>
             </div>
           </div>
-        </Section>
+        </SectionCard>
 
         {/* Family */}
         {family && (
-          <Section title={`Famille · ${family.users.length} membre${family.users.length > 1 ? "s" : ""}`}>
+          <SectionCard title={`Famille · ${family.users.length} membre${family.users.length > 1 ? "s" : ""}`}>
             {family.users.map((u) => (
               <div key={u.id} className="flex items-center gap-3 px-4 py-3 border-b border-slate-100 dark:border-slate-700 last:border-0">
                 <div className="w-8 h-8 bg-slate-100 dark:bg-slate-800 rounded-full flex items-center justify-center text-xs font-bold text-slate-600 dark:text-slate-300">
@@ -570,11 +584,11 @@ export default function SettingsPage() {
                 </form>
               </div>
             </div>
-          </Section>
+          </SectionCard>
         )}
 
         {/* Notifications */}
-        <Section title="Notifications">
+        <SectionCard title="Notifications">
           <div className="p-4 space-y-4">
             {!notifPermission ? (
               <div className="flex items-start gap-3">
@@ -624,13 +638,22 @@ export default function SettingsPage() {
               <div>
                 <label className="block text-xs font-medium text-slate-600 dark:text-slate-400 mb-1.5">Votre clé utilisateur Pushover</label>
                 <div className="flex gap-2">
-                  <input
-                    type="password"
-                    value={pushoverKey}
-                    onChange={(e) => setPushoverKey(e.target.value)}
-                    placeholder="u••••••••••••••••••••••••••••••"
-                    className={inputCls}
-                  />
+                  <div className="relative flex-1">
+                    <input
+                      type={showPushover ? "text" : "password"}
+                      value={pushoverKey}
+                      onChange={(e) => setPushoverKey(e.target.value)}
+                      placeholder="u••••••••••••••••••••••••••••••"
+                      className={inputCls}
+                    />
+                    <button
+                      type="button"
+                      onClick={() => setShowPushover((v) => !v)}
+                      className="absolute right-2.5 top-1/2 -translate-y-1/2 text-slate-400 hover:text-slate-600 dark:hover:text-slate-300"
+                    >
+                      {showPushover ? <EyeOff className="w-4 h-4" /> : <Eye className="w-4 h-4" />}
+                    </button>
+                  </div>
                   <button
                     type="button"
                     onClick={savePushoverKey}
@@ -649,11 +672,11 @@ export default function SettingsPage() {
               </div>
             </div>
           </div>
-        </Section>
+        </SectionCard>
 
         {/* Export */}
         {selectedBaby && (
-          <Section title="Exporter les données">
+          <SectionCard title="Exporter les données">
             <div className="p-4 space-y-3">
               <div className="grid grid-cols-2 gap-3">
                 <div>
@@ -684,7 +707,7 @@ export default function SettingsPage() {
                 </button>
               </div>
             </div>
-          </Section>
+          </SectionCard>
         )}
 
         {/* API Keys */}
diff --git a/src/app/(app)/stats/page.tsx b/src/app/(app)/stats/page.tsx
index b4fbcd7..3d48a07 100644
--- a/src/app/(app)/stats/page.tsx
+++ b/src/app/(app)/stats/page.tsx
@@ -1,6 +1,6 @@
 "use client";
 
-import { useState, useEffect } from "react";
+import React, { useState, useEffect } from "react";
 import { useQuery } from "@tanstack/react-query";
 import {
   BarChart, Bar, XAxis, YAxis, Tooltip, ResponsiveContainer,
@@ -172,10 +172,10 @@ function FeedHeatmap({ events, isDark }: { events: Event[]; isDark: boolean }) {
   }
   const maxVal = Math.max(...grid.flat(), 1);
 
-  const cellBg = (count: number): string => {
-    if (count === 0) return isDark ? "rgba(51,65,85,0.4)" : "rgb(241,245,249)";
+  const cellBg = (count: number): React.CSSProperties => {
+    if (count === 0) return { backgroundColor: isDark ? "rgba(51,65,85,0.4)" : "rgb(241,245,249)" };
     const intensity = 0.15 + (count / maxVal) * 0.85;
-    return isDark ? `rgba(99,102,241,${intensity})` : `rgba(79,70,229,${intensity})`;
+    return { backgroundColor: isDark ? `rgba(99,102,241,${intensity})` : `rgba(79,70,229,${intensity})` };
   };
 
   return (
@@ -202,7 +202,7 @@ function FeedHeatmap({ events, isDark }: { events: Event[]; isDark: boolean }) {
                     key={hour}
                     title={`${DOW_LABELS[dowIdx]} ${hour.toString().padStart(2, "0")}h — ${count} repas`}
                     className="flex-1 h-5 rounded-[3px]"
-                    style={{ backgroundColor: cellBg(count) }}
+                    style={cellBg(count)}
                   />
                 ))}
               </div>
@@ -210,13 +210,14 @@ function FeedHeatmap({ events, isDark }: { events: Event[]; isDark: boolean }) {
           ))}
         </div>
       </div>
-      <div className="flex items-center gap-1.5 mt-3 justify-end">
-        <span className="text-[10px] text-slate-400 dark:text-slate-500 mr-1">Moins</span>
-        {[0.15, 0.4, 0.65, 0.85, 1.0].map((v) => (
-          <div key={v} className="w-3 h-3 rounded-[3px]"
-            style={{ backgroundColor: isDark ? `rgba(99,102,241,${v})` : `rgba(79,70,229,${v})` }} />
+      <div className="flex items-center gap-1 mt-3">
+        <span className="text-xs text-slate-400 mr-1">Tétées :</span>
+        {[0, 1, 2, 3, 4].map((n) => (
+          <div key={n} className="flex flex-col items-center gap-0.5">
+            <div className="w-4 h-4 rounded-sm" style={cellBg(n)} />
+            <span className="text-[9px] text-slate-400">{n === 4 ? "4+" : n}</span>
+          </div>
         ))}
-        <span className="text-[10px] text-slate-400 dark:text-slate-500 ml-1">Plus</span>
       </div>
     </div>
   );
@@ -256,7 +257,8 @@ function SleepTimeline({ events }: { events: Event[] }) {
 
   return (
     <div className="bg-white dark:bg-slate-800 border border-slate-200 dark:border-slate-700 rounded-xl p-4 mb-4">
-      <p className="text-sm font-medium text-slate-700 dark:text-slate-200 mb-4">Nuits — 7 derniers jours</p>
+      <p className="text-sm font-medium text-slate-700 dark:text-slate-200 mb-0.5">Nuits — 7 derniers jours</p>
+      <p className="text-xs text-slate-400 dark:text-slate-500 mb-4">Fenêtre 19h – 11h</p>
       <div className="relative h-4 ml-10 mb-0.5">
         {markers.map((m) => (
           <span key={m.label} className="absolute text-[9px] text-slate-400 dark:text-slate-500 -translate-x-1/2" style={{ left: `${m.pos}%` }}>
diff --git a/src/app/(app)/timeline/page.tsx b/src/app/(app)/timeline/page.tsx
index 229680e..9f4507b 100644
--- a/src/app/(app)/timeline/page.tsx
+++ b/src/app/(app)/timeline/page.tsx
@@ -1,6 +1,7 @@
 "use client";
 
 import { useState } from "react";
+import { useSearchParams, useRouter, usePathname } from "next/navigation";
 import { useQuery, useQueryClient } from "@tanstack/react-query";
 import { EVENT_CONFIG, EventType, formatDuration } from "@/lib/event-config";
 import { EventIcon } from "@/components/event-icon";
@@ -73,7 +74,11 @@ export default function TimelinePage() {
   const [expandedId, setExpandedId] = useState<string | null>(null);
   const [editingNotes, setEditingNotes] = useState<{ id: string; notes: string } | null>(null);
   const [editingEvent, setEditingEvent] = useState<Event | null>(null);
-  const [filterType, setFilterType] = useState<EventType | "">("");
+  const [savedNoteId, setSavedNoteId] = useState<string | null>(null);
+  const searchParams = useSearchParams();
+  const router = useRouter();
+  const pathname = usePathname();
+  const filterType = (searchParams.get("type") as EventType | null) ?? "";
   const [page, setPage] = useState(0);
   const [selectMode, setSelectMode] = useState(false);
   const [selected, setSelected] = useState<Set<string>>(new Set());
@@ -124,10 +129,14 @@ export default function TimelinePage() {
     });
     qc.invalidateQueries({ queryKey: ["events"] });
     setEditingNotes(null);
+    setSavedNoteId(id);
+    setTimeout(() => setSavedNoteId(null), 2000);
   }
 
   function handleFilterChange(t: EventType | "") {
-    setFilterType(t);
+    const params = new URLSearchParams(searchParams.toString());
+    if (t === "" || t === filterType) { params.delete("type"); } else { params.set("type", t); }
+    router.replace(`${pathname}?${params.toString()}`, { scroll: false });
     setPage(0);
   }
 
@@ -296,13 +305,14 @@ export default function TimelinePage() {
                           >
                             <StickyNote className="w-3.5 h-3.5" />
                             <span>{ev.notes ? ev.notes : "Ajouter une note..."}</span>
+                            {savedNoteId === ev.id && <span className="text-xs text-emerald-500 ml-2">✓</span>}
                           </button>
                         )}
 
                         {typeof ev.metadata?.photo === "string" && (
-                          <div className="relative w-full h-48 rounded-xl overflow-hidden border border-slate-200 dark:border-slate-600">
+                          <a href={ev.metadata.photo} target="_blank" rel="noopener noreferrer" className="block relative w-full h-48 rounded-xl overflow-hidden border border-slate-200 dark:border-slate-600">
                             <Image src={ev.metadata.photo} alt="Photo" fill className="object-cover" unoptimized />
-                          </div>
+                          </a>
                         )}
 
                         <div className="flex items-center gap-3">
diff --git a/src/app/api/photos/[filename]/route.ts b/src/app/api/photos/[filename]/route.ts
new file mode 100644
index 0000000..6106719
--- /dev/null
+++ b/src/app/api/photos/[filename]/route.ts
@@ -0,0 +1,37 @@
+import { readFile } from "fs/promises";
+import { join } from "path";
+
+const UPLOAD_DIR = process.env.UPLOAD_DIR ?? join(process.cwd(), "public", "uploads");
+
+const MIME: Record<string, string> = {
+  jpg: "image/jpeg",
+  jpeg: "image/jpeg",
+  png: "image/png",
+  webp: "image/webp",
+  gif: "image/gif",
+};
+
+export async function GET(_req: Request, { params }: { params: Promise<{ filename: string }> }) {
+  const { filename } = await params;
+
+  // Prevent path traversal
+  if (filename.includes("/") || filename.includes("..")) {
+    return new Response("Not found", { status: 404 });
+  }
+
+  const ext = filename.split(".").pop()?.toLowerCase() ?? "";
+  const contentType = MIME[ext];
+  if (!contentType) return new Response("Not found", { status: 404 });
+
+  try {
+    const data = await readFile(join(UPLOAD_DIR, filename));
+    return new Response(data, {
+      headers: {
+        "Content-Type": contentType,
+        "Cache-Control": "public, max-age=31536000, immutable",
+      },
+    });
+  } catch {
+    return new Response("Not found", { status: 404 });
+  }
+}
diff --git a/src/app/api/upload/route.ts b/src/app/api/upload/route.ts
index 9739855..fcfd2cc 100644
--- a/src/app/api/upload/route.ts
+++ b/src/app/api/upload/route.ts
@@ -1,12 +1,15 @@
 import { NextResponse } from "next/server";
 import { auth } from "@/lib/auth";
-import { writeFile } from "fs/promises";
+import { writeFile, mkdir } from "fs/promises";
 import { join } from "path";
 import { randomUUID } from "crypto";
 
 const ALLOWED_TYPES = ["image/jpeg", "image/png", "image/webp", "image/gif"];
 const MAX_SIZE = 5 * 1024 * 1024; // 5 MB
 
+// Configurable via env so Docker volume can be mounted at /data/uploads
+const UPLOAD_DIR = process.env.UPLOAD_DIR ?? join(process.cwd(), "public", "uploads");
+
 export async function POST(req: Request) {
   const session = await auth();
   if (!session?.user?.id) return NextResponse.json({ error: "Non autorisé" }, { status: 401 });
@@ -22,8 +25,8 @@ export async function POST(req: Request) {
   const filename = `${randomUUID()}.${ext}`;
   const buffer = Buffer.from(await file.arrayBuffer());
 
-  const uploadDir = join(process.cwd(), "public", "uploads");
-  await writeFile(join(uploadDir, filename), buffer);
+  await mkdir(UPLOAD_DIR, { recursive: true });
+  await writeFile(join(UPLOAD_DIR, filename), buffer);
 
-  return NextResponse.json({ url: `/uploads/${filename}` });
+  return NextResponse.json({ url: `/api/photos/${filename}` });
 }
diff --git a/src/components/event-modal.tsx b/src/components/event-modal.tsx
index 1288815..d82a0c1 100644
--- a/src/components/event-modal.tsx
+++ b/src/components/event-modal.tsx
@@ -122,6 +122,7 @@ export function EventModal({ type, babyId, onClose, onSaved, initialEvent }: Pro
 
   const [timerRunning, setTimerRunning] = useState(false);
   const [timerSeconds, setTimerSeconds] = useState(0);
+  const [timerResumed, setTimerResumed] = useState(false);
   const timerRef = useRef<ReturnType<typeof setInterval> | null>(null);
   const startTimeRef = useRef<Date | null>(null);
   const [loading, setLoading] = useState(false);
@@ -207,6 +208,7 @@ export function EventModal({ type, babyId, onClose, onSaved, initialEvent }: Pro
       startTimeRef.current = savedStart;
       setTimerSeconds(elapsed);
       setTimerRunning(true);
+      setTimerResumed(true);
       timerRef.current = setInterval(() => setTimerSeconds((s) => s + 1), 1000);
     }
     return () => { if (timerRef.current) clearInterval(timerRef.current); };
@@ -218,6 +220,7 @@ export function EventModal({ type, babyId, onClose, onSaved, initialEvent }: Pro
     startTimeRef.current = start;
     localStorage.setItem(TIMER_KEY, start.toISOString());
     setTimerRunning(true);
+    setTimerResumed(false);
     timerRef.current = setInterval(() => setTimerSeconds((s) => s + 1), 1000);
   }
 
@@ -243,6 +246,10 @@ export function EventModal({ type, babyId, onClose, onSaved, initialEvent }: Pro
   async function handlePhotoChange(e: React.ChangeEvent<HTMLInputElement>) {
     const file = e.target.files?.[0];
     if (!file) return;
+    if (file.size > 5 * 1024 * 1024) {
+      alert("Image trop volumineuse (max 5 Mo)");
+      return;
+    }
     setPhotoUploading(true);
     const fd = new FormData();
     fd.append("file", file);
@@ -422,9 +429,13 @@ export function EventModal({ type, babyId, onClose, onSaved, initialEvent }: Pro
           {/* Timer */}
           {config.hasTimer && (
             <div className="bg-slate-50 dark:bg-slate-700/50 rounded-xl p-4 text-center">
-              <div className="text-3xl sm:text-4xl font-mono font-bold text-slate-800 dark:text-slate-100 mb-3 tabular-nums">
+              <div className="text-3xl sm:text-4xl font-mono font-bold text-slate-800 dark:text-slate-100 mb-1 tabular-nums">
                 {formatTimer(timerSeconds)}
               </div>
+              {timerRunning && timerResumed && (
+                <span className="text-xs text-amber-500">Reprise du chronomètre</span>
+              )}
+              <div className="mb-3" />
               <button
                 type="button"
                 onClick={timerRunning ? stopTimer : startTimer}
@@ -473,6 +484,7 @@ export function EventModal({ type, babyId, onClose, onSaved, initialEvent }: Pro
               </div>
               {form.bottleType === "maternal" && milkStocks.length > 0 && (
                 <div>
+                  <p className="text-xs text-slate-400 dark:text-slate-500 mb-1">Sélectionnez un lot — il sera marqué comme utilisé</p>
                   <label className="block text-xs font-medium text-slate-600 dark:text-slate-300 mb-1.5">
                     Lot de stock ({milkStocks.length} disponible{milkStocks.length > 1 ? "s" : ""})
                   </label>