feat: période personnalisable — plage de dates libre (from/to)

- Nouveau type Period (sliding | range) dans src/types/period.ts
- PeriodSelector : bouton "Plage" avec deux date inputs natifs
- SubsquidAdapter : filtre $until en plus de $since dans la query GraphQL
- DataService, mockData, useAnimation, useUrlState : Period partout
- Sparkline : fromMs/toMs au lieu de periodDays
- StatsPanel : label adapté au mode range
- URL partageable : ?from=YYYY-MM-DD&to=YYYY-MM-DD
- Auto-refresh désactivé pour les plages entièrement dans le passé

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

releases/v1.6.0.md

@@ -0,0 +1,24 @@
+## What's Changed
+
+### Nouvelles fonctionnalités
+
+- **Nature des échanges** — les commentaires de transactions sont analysés et classés automatiquement en catégories : don & gratitude, alimentation, soin & bien-être, vêtements, culture & loisirs, événement, service & travaux, remboursement, migration, ticket, autre
+- Distribution des catégories affichée dans le panneau latéral (barres proportionnelles sur les transactions commentées de la période) — chaque catégorie est cliquable pour dérouler la liste des transactions avec leur commentaire et montant
+- Tooltip au survol des arcs en vue Flux : répartition des catégories + échantillon de commentaires bruts du corridor
+- 76 % des transactions Ğ1v2 comportent un commentaire — le champ `remark` est désormais fetché depuis SubSquid
+
+### Améliorations
+
+- InfoPanel mis à jour : section *Nature des échanges* documentée
+
+### Détails techniques
+
+- Nouveau `src/data/commentParser.ts` — ~80 règles regex multilingues (FR/ES/CA/IT/EN/PT), 11 catégories, priorité ordonnée
+- `SubsquidAdapter` : ajout de `comment { remark }` à la query GraphQL
+- `Transaction` et `TransactionArc` : nouveaux champs `comment: string | null` et `category: TxCategory`
+- `Corridor` : nouveaux champs `categories` (agrégées) et `comments` (échantillon jusqu'à 5)
+- `PeriodStats` : nouveaux champs `categoryBreakdown` et `commentedCount`
+- Zone de hit des arcs SVG élargie (+8 px) pour faciliter le survol
+- Aucune nouvelle dépendance npm
+
+**Full Changelog**: https://git.syoul.fr/geoflux/compare/v1.5.0...v1.6.0

src/App.tsx

@@ -15,9 +15,10 @@ import { useAnimation } from './hooks/useAnimation';
 import { useMediaQuery } from './hooks/useMediaQuery';
 import { InfoPanel } from './components/InfoPanel';
 import { initialUrlState, useUrlSync } from './hooks/useUrlState';
+import { type Period, periodKey, isPastRange } from './types/period';
 
 export default function App() {
-  const [periodDays, setPeriodDays] = useState(initialUrlState.period);
+  const [period, setPeriod] = useState<Period>(initialUrlState.period);
   const [transactions, setTransactions] = useState<Transaction[]>([]);
   const [arcs, setArcs] = useState<TransactionArc[]>([]);
   const [stats, setStats] = useState<PeriodStats | null>(null);
@@ -52,14 +53,14 @@ export default function App() {
     }
   };
 
-  const animation = useAnimation(transactions, arcs, periodDays, allTimestamps);
+  const animation = useAnimation(transactions, arcs, period, allTimestamps);
 
   // Synchronise l'état dans l'URL (deep link / partage)
-  useUrlSync(periodDays, viewMode, focusCity);
+  useUrlSync(period, viewMode, focusCity);
 
-  const handlePeriodChange = (days: number) => {
+  const handlePeriodChange = (newPeriod: Period) => {
     animation.deactivate();
-    setPeriodDays(days);
+    setPeriod(newPeriod);
   };
 
   const handleViewModeChange = (mode: 'heatmap' | 'flow') => {
@@ -98,7 +99,7 @@ export default function App() {
     const load = (showLoading: boolean) => {
       if (showLoading) setLoading(true);
       else setRefreshing(true);
-      fetchData(periodDays)
+      fetchData(period)
         .then(({ transactions, arcs, stats, source, currentUD, allTimestamps }) => {
           if (!cancelled) {
             setTransactions(transactions);
@@ -117,10 +118,11 @@ export default function App() {
     };
 
     load(true);
-    const interval = setInterval(() => load(false), 30_000);
+    const interval = isPastRange(period) ? null : setInterval(() => load(false), 120_000);
 
-    return () => { cancelled = true; clearInterval(interval); };
-  }, [periodDays, endpointVersion]);
+    return () => { cancelled = true; if (interval) clearInterval(interval); };
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [periodKey(period), endpointVersion]);
 
   // Stats heatmap sur la fenêtre courante en mode animation
   const visibleStats: PeriodStats | null = animation.active
@@ -143,7 +145,7 @@ export default function App() {
   const statsPanelProps = {
     stats: visibleStats,
     loading,
-    periodDays,
+    period,
     source,
     currentUD,
     animationLabel: animation.active ? (animation.currentFrame?.label ?? undefined) : undefined,
@@ -152,6 +154,7 @@ export default function App() {
     focusCity,
     allTimestamps,
     onEndpointChange: () => setEndpointVersion((v) => v + 1),
+    transactions,
   };
 
   return (
@@ -222,7 +225,7 @@ export default function App() {
         {/* Period selector — floating over map */}
         <div className={`absolute top-4 z-[1000] ${isMobile ? 'left-16 right-4' : 'left-1/2 -translate-x-1/2'}`}>
           <PeriodSelector
-            value={periodDays}
+            period={period}
             onChange={handlePeriodChange}
             animationActive={animation.active}
             onAnimate={() => animation.active ? animation.deactivate() : animation.activate()}

src/components/EndpointPopover.tsx

@@ -1,4 +1,4 @@
-import { useState } from 'react';
+import { useState, useEffect } from 'react';
 import { createPortal } from 'react-dom';
 import {
   KNOWN_SUBSQUID_NODES,
@@ -8,6 +8,7 @@ import {
   setSubsquidUrl,
   setCesiumUrl,
 } from '../services/EndpointConfig';
+import { discoverSquidNodes, clearPeerCache } from '../services/PeerDiscovery';
 import { testEndpoint } from '../hooks/useServiceStatus';
 
 interface Props {
@@ -30,8 +31,11 @@ export function EndpointPopover({ service, onClose, onSaved }: Props) {
 
   const [inputUrl, setInputUrl] = useState(currentUrl);
   const [testResults, setTestResults] = useState<Map<string, TestResult>>(new Map());
+  const [discoveredUrls, setDiscoveredUrls] = useState<string[]>([]);
+  const [discovering, setDiscovering] = useState(false);
+  const [discoverVersion, setDiscoverVersion] = useState(0);
 
-  const runTest = async (url: string) => {
+  const testUrl = async (url: string) => {
     setTestResults((prev) => new Map(prev).set(url, { url, state: 'testing', latencyMs: null }));
     try {
       const ms = await testEndpoint(service, url);
@@ -43,6 +47,23 @@ export function EndpointPopover({ service, onClose, onSaved }: Props) {
     }
   };
 
+  // Découverte des nœuds réseau (SubSquid uniquement)
+  useEffect(() => {
+    if (service !== 'subsquid') return;
+    setDiscovering(true);
+    setDiscoveredUrls([]);
+    discoverSquidNodes().then((urls) => {
+      setDiscoveredUrls(urls);
+      setDiscovering(false);
+      urls.forEach((url) => testUrl(url));
+    });
+  }, [discoverVersion]); // eslint-disable-line react-hooks/exhaustive-deps
+
+  const refreshDiscovery = () => {
+    clearPeerCache();
+    setDiscoverVersion((v) => v + 1);
+  };
+
   const handleSave = () => {
     const trimmed = inputUrl.trim();
     if (!trimmed) return;
@@ -59,12 +80,47 @@ export function EndpointPopover({ service, onClose, onSaved }: Props) {
     return <span className="text-red-500">●</span>;
   };
 
+  const NodeRow = ({ url, label }: { url: string; label?: string }) => {
+    const result = testResults.get(url);
+    const isActive = inputUrl === url;
+    const hostname = label ?? (() => { try { return new URL(url).hostname; } catch { return url; } })();
+    return (
+      <div
+        className={`flex items-center justify-between rounded-xl border px-3 py-2.5 cursor-pointer transition-colors ${
+          isActive
+            ? 'border-[#d4a843]/60 bg-[#d4a843]/5'
+            : 'border-[#1e1f2a] hover:border-[#2e2f3a]'
+        }`}
+        onClick={() => setInputUrl(url)}
+      >
+        <div className="min-w-0">
+          <p className="text-white text-sm font-medium truncate">{hostname}</p>
+          <p className="text-[#4b5563] text-xs font-mono truncate">{url}</p>
+        </div>
+        <div className="flex items-center gap-2 ml-3 shrink-0">
+          {result && (
+            <span className="text-xs font-mono text-[#6b7280]">
+              {dot(result.state)}
+              {result.latencyMs !== null && ` ${result.latencyMs} ms`}
+            </span>
+          )}
+          <button
+            onClick={(e) => { e.stopPropagation(); testUrl(url); }}
+            className="text-xs text-[#4b5563] hover:text-[#d4a843] transition-colors px-2 py-1 border border-[#2e2f3a] rounded-lg"
+          >
+            Tester
+          </button>
+        </div>
+      </div>
+    );
+  };
+
   return createPortal(
     <div
       className="fixed inset-0 z-[9999] flex items-center justify-center bg-black/60 backdrop-blur-sm"
       onClick={(e) => { if (e.target === e.currentTarget) onClose(); }}
     >
-      <div className="bg-[#0f1016] border border-[#2e2f3a] rounded-2xl shadow-2xl w-full max-w-md mx-4 p-6 space-y-5">
+      <div className="bg-[#0f1016] border border-[#2e2f3a] rounded-2xl shadow-2xl w-full max-w-md mx-4 p-6 space-y-5 max-h-[85vh] overflow-y-auto">
 
         {/* Header */}
         <div className="flex items-center justify-between">
@@ -74,45 +130,40 @@ export function EndpointPopover({ service, onClose, onSaved }: Props) {
           <button onClick={onClose} className="text-[#4b5563] hover:text-white transition-colors text-xl leading-none">×</button>
         </div>
 
-        {/* Nœuds connus */}
+        {/* Nœuds connus (statiques) */}
         <div className="space-y-2">
           <p className="text-[#4b5563] text-xs uppercase tracking-widest">Nœuds connus</p>
-          {knownNodes.map((node) => {
-            const result = testResults.get(node.url);
-            const isActive = inputUrl === node.url;
-            return (
-              <div
-                key={node.url}
-                className={`flex items-center justify-between rounded-xl border px-3 py-2.5 cursor-pointer transition-colors ${
-                  isActive
-                    ? 'border-[#d4a843]/60 bg-[#d4a843]/5'
-                    : 'border-[#1e1f2a] hover:border-[#2e2f3a]'
-                }`}
-                onClick={() => setInputUrl(node.url)}
-              >
-                <div className="min-w-0">
-                  <p className="text-white text-sm font-medium truncate">{node.label}</p>
-                  <p className="text-[#4b5563] text-xs font-mono truncate">{node.url}</p>
-                </div>
-                <div className="flex items-center gap-2 ml-3 shrink-0">
-                  {result && (
-                    <span className="text-xs font-mono text-[#6b7280]">
-                      {dot(result.state)}
-                      {result.latencyMs !== null && ` ${result.latencyMs} ms`}
-                    </span>
-                  )}
-                  <button
-                    onClick={(e) => { e.stopPropagation(); runTest(node.url); }}
-                    className="text-xs text-[#4b5563] hover:text-[#d4a843] transition-colors px-2 py-1 border border-[#2e2f3a] rounded-lg"
-                  >
-                    Tester
-                  </button>
-                </div>
-              </div>
-            );
-          })}
+          {knownNodes.map((node) => (
+            <NodeRow key={node.url} url={node.url} label={node.label} />
+          ))}
         </div>
 
+        {/* Nœuds découverts via duniter_peerings (SubSquid uniquement) */}
+        {service === 'subsquid' && (
+          <div className="space-y-2">
+            <div className="flex items-center justify-between">
+              <p className="text-[#4b5563] text-xs uppercase tracking-widest">Réseau Ğ1</p>
+              <button
+                onClick={refreshDiscovery}
+                disabled={discovering}
+                className="text-xs text-[#4b5563] hover:text-[#d4a843] disabled:opacity-40 transition-colors"
+                title="Actualiser la liste des nœuds"
+              >
+                {discovering ? <span className="animate-spin inline-block">↻</span> : '↻ Actualiser'}
+              </button>
+            </div>
+            {discovering && discoveredUrls.length === 0 && (
+              <p className="text-xs text-[#4b5563] pl-1">Découverte en cours…</p>
+            )}
+            {!discovering && discoveredUrls.length === 0 && (
+              <p className="text-xs text-[#4b5563] pl-1">Aucun nœud trouvé</p>
+            )}
+            {discoveredUrls.map((url) => (
+              <NodeRow key={url} url={url} />
+            ))}
+          </div>
+        )}
+
         {/* URL personnalisée */}
         <div className="space-y-2">
           <p className="text-[#4b5563] text-xs uppercase tracking-widest">URL personnalisée</p>
@@ -125,7 +176,7 @@ export function EndpointPopover({ service, onClose, onSaved }: Props) {
               className="flex-1 bg-[#0a0b0f] border border-[#2e2f3a] rounded-xl px-3 py-2 text-white text-sm font-mono placeholder-[#2e2f3a] focus:outline-none focus:border-[#d4a843]/60 transition-colors"
             />
             <button
-              onClick={() => runTest(inputUrl.trim())}
+              onClick={() => testUrl(inputUrl.trim())}
               disabled={!inputUrl.trim()}
               className="text-xs text-[#4b5563] hover:text-[#d4a843] disabled:opacity-30 transition-colors px-3 py-2 border border-[#2e2f3a] rounded-xl"
             >
@@ -134,7 +185,10 @@ export function EndpointPopover({ service, onClose, onSaved }: Props) {
           </div>
           {(() => {
             const result = testResults.get(inputUrl.trim());
-            if (!result || knownNodes.some((n) => n.url === inputUrl.trim())) return null;
+            const isKnown = [...knownNodes, ...discoveredUrls.map((u) => ({ url: u }))].some(
+              (n) => n.url === inputUrl.trim()
+            );
+            if (!result || isKnown) return null;
             return (
               <p className="text-xs font-mono text-[#6b7280] pl-1">
                 {dot(result.state)}

src/components/FlowMap.tsx

@@ -24,6 +24,8 @@ const CLUSTER_RADIUS    = 38;   // pixels — distance max pour regrouper deux v
 
 import type { TransactionArc } from '../data/arcData';
 import { buildCorridors } from '../data/arcData';
+import type { TxCategory } from '../data/commentParser';
+import { CATEGORY_LABELS, CATEGORY_COLORS, aggregateCategories } from '../data/commentParser';
 
 // Leaflet default marker fix (Vite asset pipeline)
 import iconUrl from 'leaflet/dist/images/marker-icon.png';
@@ -169,6 +171,10 @@ export function FlowMap({ arcs, focusCity, onCityClick }: FlowMapProps) {
     interface ClusterArc {
       fromIdx: number; toIdx: number;
       totalVolume: number; count: number;
+      categories: { category: TxCategory; count: number; volume: number }[];
+      comments: string[];
+      _catItems: { category: TxCategory; amount: number }[];
+      _comments: string[];
     }
     const clArcMap = new Map<string, ClusterArc>();
     for (const c of corridors) {
@@ -176,12 +182,18 @@ export function FlowMap({ arcs, focusCity, onCityClick }: FlowMapProps) {
       const ti = cityClusterIdx.get(c.toCity);
       if (fi === undefined || ti === undefined || fi === ti) continue; // intra-cluster → ignoré
       const key = `${fi}||${ti}`;
-      if (!clArcMap.has(key)) clArcMap.set(key, { fromIdx: fi, toIdx: ti, totalVolume: 0, count: 0 });
+      if (!clArcMap.has(key)) clArcMap.set(key, { fromIdx: fi, toIdx: ti, totalVolume: 0, count: 0, categories: [], comments: [], _catItems: [], _comments: [] });
       const ca = clArcMap.get(key)!;
       ca.totalVolume += c.totalVolume;
       ca.count       += c.count;
+      ca._catItems.push(...c.categories.map((cat) => ({ category: cat.category, amount: cat.volume })));
+      ca._comments.push(...c.comments);
     }
-    const clusterArcs = [...clArcMap.values()].sort((a, b) => b.totalVolume - a.totalVolume);
+    const clusterArcs = [...clArcMap.values()].map((ca) => ({
+      ...ca,
+      categories: aggregateCategories(ca._catItems),
+      comments:   [...new Set(ca._comments)].filter(Boolean).slice(0, 4),
+    })).sort((a, b) => b.totalVolume - a.totalVolume);
 
     // --- 4. Couleur de balance par cluster ---
     const maxAbsNet = Math.max(...clusters.map(cl => Math.abs(cl.received - cl.emitted)), 1);
@@ -239,9 +251,13 @@ export function FlowMap({ arcs, focusCity, onCityClick }: FlowMapProps) {
                       : isFocusTo   ? '#00acc1'
                       : '#2e2f3a';
 
+      const arcKey = `${ca.fromIdx}||${ca.toIdx}`;
+      const midX = (1-0.5)*(1-0.5)*p1.x + 2*(1-0.5)*0.5*cx + 0.5*0.5*p2.x;
+      const midY = (1-0.5)*(1-0.5)*p1.y + 2*(1-0.5)*0.5*cy + 0.5*0.5*p2.y;
       return {
         idx, ca, p1, p2, cx, cy, arrowPts, strokeW, opacity, stroke, arrowFill,
         path: `M ${p1.x},${p1.y} Q ${cx},${cy} ${p2.x},${p2.y}`,
+        arcKey, midX, midY,
       };
     });
 
@@ -263,9 +279,10 @@ export function FlowMap({ arcs, focusCity, onCityClick }: FlowMapProps) {
   }, [corridors, cityNodes, focusCity, tick, mapReady, clustered]);
 
   const [popupIdx, setPopupIdx] = useState<number | null>(null);
+  const [hoveredArc, setHoveredArc] = useState<{ key: string; x: number; y: number } | null>(null);
 
-  // Ferme le popup sur déplacement/zoom
-  useEffect(() => { setPopupIdx(null); }, [tick]);
+  // Ferme le popup et le tooltip sur déplacement/zoom
+  useEffect(() => { setPopupIdx(null); setHoveredArc(null); }, [tick]);
 
   // Handler de clic : ouvre/ferme le popup + focus
   const handleNodeClick = (nodeIdx: number) => {
@@ -303,18 +320,22 @@ export function FlowMap({ arcs, focusCity, onCityClick }: FlowMapProps) {
           </defs>
 
           {/* Arcs bezier */}
-          {svgElements.arcElems.map(a => (
-            <g key={`${a.ca.fromIdx}-${a.ca.toIdx}`} opacity={a.opacity}>
-              <path
-                d={a.path}
-                fill="none"
-                stroke={a.stroke}
-                strokeWidth={a.strokeW}
-                strokeLinecap="round"
-              />
-              <polygon points={a.arrowPts} fill={a.arrowFill} />
-            </g>
-          ))}
+          <g style={{ pointerEvents: 'all' }}>
+            {svgElements.arcElems.map(a => (
+              <g
+                key={`${a.ca.fromIdx}-${a.ca.toIdx}`}
+                opacity={hoveredArc && hoveredArc.key !== a.arcKey ? a.opacity * 0.4 : a.opacity}
+                onMouseEnter={() => setHoveredArc({ key: a.arcKey, x: a.midX, y: a.midY })}
+                onMouseLeave={() => setHoveredArc(null)}
+                style={{ cursor: 'default' }}
+              >
+                {/* Zone de hit invisible plus large */}
+                <path d={a.path} fill="none" stroke="transparent" strokeWidth={Math.max(2, a.strokeW)} pointerEvents="stroke" />
+                <path d={a.path} fill="none" stroke={a.stroke} strokeWidth={a.strokeW} strokeLinecap="round" pointerEvents="stroke" />
+                <polygon points={a.arrowPts} fill={a.arrowFill} />
+              </g>
+            ))}
+          </g>
 
           {/* Nœuds de clusters (pointer-events activés uniquement ici) */}
           <g style={{ pointerEvents: 'all' }}>
@@ -347,6 +368,56 @@ export function FlowMap({ arcs, focusCity, onCityClick }: FlowMapProps) {
         </svg>
       )}
 
+      {/* Tooltip arc — nature des échanges */}
+      {hoveredArc && svgElements && (() => {
+        const arcElem = svgElements.arcElems.find((a) => a.arcKey === hoveredArc.key);
+        if (!arcElem) return null;
+        const { ca } = arcElem;
+        const topCats = ca.categories.filter((c) => c.category !== 'migration' && c.category !== 'ticket').slice(0, 4);
+        const total = ca.categories.reduce((s, c) => s + c.count, 0);
+        const containerW = containerRef.current?.clientWidth ?? 600;
+        const containerH = containerRef.current?.clientHeight ?? 400;
+        const tipW = 200;
+        const tipH = 120;
+        const left = Math.min(hoveredArc.x + 12, containerW - tipW - 8);
+        const top  = Math.min(Math.max(8, hoveredArc.y - tipH / 2), containerH - tipH - 8);
+        return (
+          <div
+            className="absolute z-[601] bg-[#0a0b0f]/97 border border-[#2e2f3a] rounded-xl p-3 shadow-2xl pointer-events-none"
+            style={{ left, top, width: tipW }}
+          >
+            <p className="text-[#4b5563] text-[10px] uppercase tracking-widest mb-2">
+              {ca.count} échanges · {ca.totalVolume.toLocaleString('fr-FR', { maximumFractionDigits: 0 })} Ğ1
+            </p>
+            {topCats.length > 0 ? (
+              <div className="space-y-1.5 mb-2">
+                {topCats.map((c) => {
+                  const pct = Math.round((c.count / total) * 100);
+                  return (
+                    <div key={c.category}>
+                      <div className="flex justify-between mb-0.5">
+                        <span className="text-[#9ca3af] text-[10px]">{CATEGORY_LABELS[c.category]}</span>
+                        <span className="text-[#4b5563] text-[10px] font-mono">{pct}%</span>
+                      </div>
+                      <div className="w-full bg-[#1e1f2a] rounded-full h-0.5">
+                        <div className="h-0.5 rounded-full" style={{ width: `${pct}%`, backgroundColor: CATEGORY_COLORS[c.category] }} />
+                      </div>
+                    </div>
+                  );
+                })}
+              </div>
+            ) : null}
+            {ca.comments.length > 0 && (
+              <div className="border-t border-[#1e1f2a] pt-1.5 space-y-0.5">
+                {ca.comments.slice(0, 3).map((c, i) => (
+                  <p key={i} className="text-[#4b5563] text-[10px] truncate italic">"{c}"</p>
+                ))}
+              </div>
+            )}
+          </div>
+        );
+      })()}
+
       {/* Bouton cluster / villes */}
       <button
         onClick={() => setClustered(c => !c)}

src/components/InfoPanel.tsx

@@ -127,6 +127,23 @@ export function InfoPanel({ onClose }: InfoPanelProps) {
             </Feature>
           </Section>
 
+          <Section title="Nature des échanges">
+            <Feature icon="🏷" name="Catégorisation automatique">
+              Le commentaire de chaque transaction est analysé et classé en catégories :
+              don & gratitude, alimentation, soin & bien-être, vêtements, culture & loisirs,
+              événement, service & travaux, remboursement.
+            </Feature>
+            <Feature icon="▬" name="Distribution dans le panneau">
+              La section <em>Nature des échanges</em> en bas du panneau latéral affiche
+              la répartition des catégories sous forme de barres proportionnelles
+              sur les transactions commentées de la période courante.
+            </Feature>
+            <Feature icon="⟿" name="Tooltip sur les arcs (vue Flux)">
+              Survoler un arc affiche la distribution des catégories et un échantillon
+              de commentaires bruts pour ce corridor.
+            </Feature>
+          </Section>
+
           <Section title="Overlay Dividende Universel">
             <Feature icon="DU" name="Membres actifs géolocalisés">
               Le bouton <Kbd>DU</Kbd> (à gauche de la carte) affiche en overlay les membres Ğ1

src/components/PeriodSelector.tsx

@@ -1,8 +1,9 @@
 import { useState, useRef, useEffect } from 'react';
+import { type Period } from '../types/period';
 
 interface PeriodSelectorProps {
-  value: number;
-  onChange: (days: number) => void;
+  period: Period;
+  onChange: (period: Period) => void;
   animationActive: boolean;
   onAnimate: () => void;
   viewMode: 'heatmap' | 'flow';
@@ -10,50 +11,93 @@ interface PeriodSelectorProps {
   geoPercent?: number | null;
 }
 
-const PERIODS = [
+const PRESETS = [
   { label: '24h', days: 1 },
   { label: '7 jours', days: 7 },
   { label: '30 jours', days: 30 },
 ];
-
 const PRESET_DAYS = new Set([1, 7, 30]);
 
-export function PeriodSelector({ value, onChange, animationActive, onAnimate, viewMode, onViewModeChange, geoPercent }: PeriodSelectorProps) {
-  const [customOpen, setCustomOpen] = useState(false);
-  const [inputVal, setInputVal] = useState('');
-  const inputRef = useRef<HTMLInputElement>(null);
+function toDateInputValue(d: Date): string {
+  return d.toISOString().split('T')[0];
+}
+
+export function PeriodSelector({ period, onChange, animationActive, onAnimate, viewMode, onViewModeChange, geoPercent }: PeriodSelectorProps) {
+  const [customOpen, setCustomOpen] = useState(false);
+  const [rangeOpen, setRangeOpen]   = useState(false);
+  const [inputVal, setInputVal]     = useState('');
+  const [fromInput, setFromInput]   = useState('');
+  const [toInput, setToInput]       = useState('');
+  const inputRef  = useRef<HTMLInputElement>(null);
+  const fromRef   = useRef<HTMLInputElement>(null);
+
+  const isSliding   = period.type === 'sliding';
+  const isPreset    = isSliding && PRESET_DAYS.has(period.days);
+  const isCustomDay = isSliding && !PRESET_DAYS.has(period.days);
+  const isRange     = period.type === 'range';
+
+  const todayStr = toDateInputValue(new Date());
 
-  // Ouvre le champ custom avec la valeur courante pré-remplie
   const openCustom = () => {
-    setInputVal(PRESET_DAYS.has(value) ? '' : String(value));
+    setRangeOpen(false);
+    setInputVal(isCustomDay ? String(period.days) : '');
     setCustomOpen(true);
   };
 
-  useEffect(() => {
-    if (customOpen) inputRef.current?.focus();
-  }, [customOpen]);
+  const openRange = () => {
+    setCustomOpen(false);
+    if (isRange) {
+      setFromInput(toDateInputValue(period.from));
+      setToInput(toDateInputValue(period.to));
+    } else {
+      const to = new Date();
+      const from = new Date(to.getTime() - 30 * 86_400_000);
+      setFromInput(toDateInputValue(from));
+      setToInput(toDateInputValue(to));
+    }
+    setRangeOpen(true);
+  };
 
-  const commit = () => {
+  useEffect(() => { if (customOpen) inputRef.current?.focus(); }, [customOpen]);
+  useEffect(() => { if (rangeOpen)  fromRef.current?.focus(); },  [rangeOpen]);
+
+  const commitDays = () => {
     const n = parseInt(inputVal, 10);
-    if (n >= 1 && n <= 365) onChange(n);
+    if (n >= 1) onChange({ type: 'sliding', days: n });
     setCustomOpen(false);
   };
 
-  const isCustomActive = !PRESET_DAYS.has(value);
+  const commitRange = () => {
+    if (!fromInput || !toInput) return;
+    const from = new Date(fromInput);
+    const to   = new Date(toInput);
+    to.setHours(23, 59, 59, 999);
+    if (isNaN(from.getTime()) || isNaN(to.getTime()) || from >= to) return;
+    onChange({ type: 'range', from, to });
+    setRangeOpen(false);
+  };
+
+  const btnClass = (active: boolean) => `
+    px-3 py-2.5 sm:py-1.5 rounded-md text-sm font-medium transition-all duration-200 cursor-pointer
+    ${active
+      ? 'bg-[#d4a843] text-[#0a0b0f] shadow-[0_0_12px_rgba(212,168,67,0.4)]'
+      : 'text-[#6b7280] hover:text-[#d4a843] hover:bg-[#1a1b23]'
+    }
+  `;
+
+  const rangeLabel = isRange
+    ? `${period.from.toLocaleDateString('fr-FR', { day: 'numeric', month: 'short' })} → ${period.to.toLocaleDateString('fr-FR', { day: 'numeric', month: 'short' })}`
+    : 'Plage';
 
   return (
     <div className="flex flex-wrap gap-1 bg-[#0f1016] border border-[#2e2f3a] rounded-lg p-1 items-center max-w-[calc(100vw-2rem)]">
-      {PERIODS.map(({ label, days }) => (
+
+      {/* Préréglages */}
+      {PRESETS.map(({ label, days }) => (
         <button
           key={days}
-          onClick={() => { onChange(days); setCustomOpen(false); }}
-          className={`
-            px-3 py-2.5 sm:py-1.5 rounded-md text-sm font-medium transition-all duration-200 cursor-pointer
-            ${value === days && !customOpen
-              ? 'bg-[#d4a843] text-[#0a0b0f] shadow-[0_0_12px_rgba(212,168,67,0.4)]'
-              : 'text-[#6b7280] hover:text-[#d4a843] hover:bg-[#1a1b23]'
-            }
-          `}
+          onClick={() => { onChange({ type: 'sliding', days }); setCustomOpen(false); setRangeOpen(false); }}
+          className={btnClass(isPreset && (period as { days: number }).days === days && !customOpen && !rangeOpen)}
         >
           {label}
         </button>
@@ -61,53 +105,68 @@ export function PeriodSelector({ value, onChange, animationActive, onAnimate, vi
 
       <div className="w-px mx-1 bg-[#2e2f3a] self-stretch" />
 
-      {/* Bouton Personnaliser + champ inline */}
+      {/* Nombre de jours personnalisé */}
       {customOpen ? (
         <div className="flex items-center gap-1">
           <input
             ref={inputRef}
             type="number"
             min={1}
-            max={365}
             value={inputVal}
             onChange={(e) => setInputVal(e.target.value)}
-            onKeyDown={(e) => {
-              if (e.key === 'Enter') commit();
-              if (e.key === 'Escape') setCustomOpen(false);
-            }}
-            onBlur={commit}
+            onKeyDown={(e) => { if (e.key === 'Enter') commitDays(); if (e.key === 'Escape') setCustomOpen(false); }}
+            onBlur={commitDays}
             placeholder="jours"
             className="w-16 px-2 py-1 text-sm bg-[#1a1b23] border border-[#d4a843] rounded-md text-[#d4a843] text-center focus:outline-none tabular-nums [appearance:textfield] [&::-webkit-inner-spin-button]:appearance-none"
           />
           <span className="text-[#6b7280] text-xs">j</span>
         </div>
       ) : (
-        <button
-          onClick={openCustom}
-          className={`
-            px-3 py-2.5 sm:py-1.5 rounded-md text-sm font-medium transition-all duration-200 cursor-pointer
-            ${isCustomActive
-              ? 'bg-[#d4a843] text-[#0a0b0f] shadow-[0_0_12px_rgba(212,168,67,0.4)]'
-              : 'text-[#6b7280] hover:text-[#d4a843] hover:bg-[#1a1b23]'
-            }
-          `}
-        >
-          {isCustomActive ? `${value} jours` : 'Personnaliser'}
+        <button onClick={openCustom} className={btnClass(isCustomDay && !rangeOpen)}>
+          {isCustomDay ? `${period.days} jours` : 'N jours'}
+        </button>
+      )}
+
+      {/* Plage de dates */}
+      {rangeOpen ? (
+        <div className="flex items-center gap-1">
+          <input
+            ref={fromRef}
+            type="date"
+            value={fromInput}
+            max={toInput || todayStr}
+            onChange={(e) => setFromInput(e.target.value)}
+            onKeyDown={(e) => { if (e.key === 'Escape') setRangeOpen(false); }}
+            className="w-32 px-2 py-1 text-xs bg-[#1a1b23] border border-[#d4a843] rounded-md text-[#d4a843] focus:outline-none"
+          />
+          <span className="text-[#6b7280] text-xs">→</span>
+          <input
+            type="date"
+            value={toInput}
+            min={fromInput}
+            max={todayStr}
+            onChange={(e) => setToInput(e.target.value)}
+            onKeyDown={(e) => { if (e.key === 'Enter') commitRange(); if (e.key === 'Escape') setRangeOpen(false); }}
+            className="w-32 px-2 py-1 text-xs bg-[#1a1b23] border border-[#d4a843] rounded-md text-[#d4a843] focus:outline-none"
+          />
+          <button
+            onClick={commitRange}
+            disabled={!fromInput || !toInput || fromInput >= toInput}
+            className="px-2 py-1 text-xs text-[#0a0b0f] bg-[#d4a843] rounded-md disabled:opacity-30 hover:bg-[#e0b84d] transition-colors"
+          >
+            OK
+          </button>
+          <button onClick={() => setRangeOpen(false)} className="text-[#4b5563] hover:text-white text-xs">✕</button>
+        </div>
+      ) : (
+        <button onClick={openRange} className={btnClass(isRange && !customOpen)}>
+          {rangeLabel}
         </button>
       )}
 
       <div className="w-px mx-1 bg-[#2e2f3a] self-stretch" />
 
-      <button
-        onClick={onAnimate}
-        className={`
-          px-3 py-1.5 rounded-md text-sm font-medium transition-all duration-200 cursor-pointer
-          ${animationActive
-            ? 'bg-[#d4a843] text-[#0a0b0f] shadow-[0_0_12px_rgba(212,168,67,0.4)]'
-            : 'text-[#6b7280] hover:text-[#d4a843] hover:bg-[#1a1b23]'
-          }
-        `}
-      >
+      <button onClick={onAnimate} className={btnClass(animationActive)}>
         ▶ Animer
       </button>
 
@@ -115,22 +174,16 @@ export function PeriodSelector({ value, onChange, animationActive, onAnimate, vi
 
       <button
         onClick={() => onViewModeChange(viewMode === 'heatmap' ? 'flow' : 'heatmap')}
-        className={`
-          px-3 py-1.5 rounded-md text-sm font-medium transition-all duration-200 cursor-pointer
-          ${viewMode === 'flow'
-            ? 'bg-[#d4a843] text-[#0a0b0f] shadow-[0_0_12px_rgba(212,168,67,0.4)]'
-            : 'text-[#6b7280] hover:text-[#d4a843] hover:bg-[#1a1b23]'
-          }
-        `}
+        className={btnClass(viewMode === 'flow')}
       >
         {viewMode === 'flow' ? '⊙ Heatmap' : '◉ Flux'}
       </button>
+
       {geoPercent != null && (
         <span className="text-[10px] font-mono text-white px-1 shrink-0">
           {geoPercent}% Tx géoloc.
         </span>
       )}
-
     </div>
   );
 }

src/components/Sparkline.tsx

@@ -2,30 +2,34 @@ import { useMemo } from 'react';
 
 interface SparklineProps {
   timestamps: number[];
-  periodDays: number;
+  fromMs: number;
+  toMs: number;
 }
 
 /**
- * Mini bar-chart SVG affichant l'activité journalière sur la période.
+ * Mini bar-chart SVG affichant l'activité sur la période.
  * Utilise les timestamps déjà en mémoire — aucune requête supplémentaire.
  */
-export function Sparkline({ timestamps, periodDays }: SparklineProps) {
+export function Sparkline({ timestamps, fromMs, toMs }: SparklineProps) {
   const buckets = useMemo(() => {
     if (timestamps.length === 0) return [];
-    const n = periodDays === 1 ? 24 : Math.min(periodDays, 30);
-    const now = Date.now();
-    const start = now - periodDays * 864e5;
-    const step = (periodDays * 864e5) / n;
+    const duration = toMs - fromMs;
+    const days = duration / 864e5;
+    const n = days <= 1 ? 24 : Math.min(Math.ceil(days), 30);
+    const step = duration / n;
     const counts = new Array(n).fill(0);
     for (const ts of timestamps) {
-      const i = Math.floor((ts - start) / step);
+      const i = Math.floor((ts - fromMs) / step);
       if (i >= 0 && i < n) counts[i]++;
     }
     return counts;
-  }, [timestamps, periodDays]);
+  }, [timestamps, fromMs, toMs]);
 
   if (buckets.length === 0) return null;
 
+  const duration = toMs - fromMs;
+  const days = duration / 864e5;
+
   const n = buckets.length;
   const max = Math.max(...buckets, 1);
   const W = 100;
@@ -33,6 +37,11 @@ export function Sparkline({ timestamps, periodDays }: SparklineProps) {
   const barW = W / n;
   const gap = barW * 0.18;
 
+  const fmtLabel = (ms: number) => {
+    if (days <= 1) return new Date(ms).getHours() + 'h';
+    return new Date(ms).toLocaleDateString('fr-FR', { day: 'numeric', month: 'short' });
+  };
+
   return (
     <div className="space-y-1">
       <svg
@@ -58,8 +67,8 @@ export function Sparkline({ timestamps, periodDays }: SparklineProps) {
         })}
       </svg>
       <div className="flex justify-between text-[10px] text-[#4b5563]">
-        <span>{periodDays === 1 ? '0h' : 'J-' + periodDays}</span>
-        <span>{periodDays === 1 ? 'maintenant' : 'aujourd\'hui'}</span>
+        <span>{fmtLabel(fromMs)}</span>
+        <span>{fmtLabel(toMs)}</span>
       </div>
     </div>
   );

src/components/StatsPanel.tsx

@@ -1,14 +1,17 @@
-import { useRef } from 'react';
+import { useRef, useState } from 'react';
 import type { PeriodStats } from '../services/DataService';
 import type { FlowStats } from '../data/arcData';
 import { Sparkline } from './Sparkline';
 import { ServiceStatusDots } from './ServiceStatusDots';
 import { useServiceStatus } from '../hooks/useServiceStatus';
+import { CATEGORY_LABELS, CATEGORY_COLORS, type TxCategory } from '../data/commentParser';
+import type { Transaction } from '../data/mockData';
+import { type Period, periodToDates, periodToDays } from '../types/period';
 
 interface StatsPanelProps {
   stats: PeriodStats | null;
   loading: boolean;
-  periodDays: number;
+  period: Period;
   source: 'live' | 'mock';
   className?: string;
   currentUD: number;
@@ -19,6 +22,7 @@ interface StatsPanelProps {
   onClose?: () => void;
   onEndpointChange?: () => void;
   allTimestamps?: number[];
+  transactions?: Transaction[];
 }
 
 const MEDALS = ['🥇', '🥈', '🥉'];
@@ -65,9 +69,14 @@ function CityRow({ city, volume, count, countryCode, accent }: {
   );
 }
 
-export function StatsPanel({ stats, loading, periodDays, source, currentUD, animationLabel, viewMode = 'heatmap', flowStats, focusCity, onClose, onEndpointChange, className, allTimestamps = [] }: StatsPanelProps) {
+export function StatsPanel({ stats, loading, period, source, currentUD, animationLabel, viewMode = 'heatmap', flowStats, focusCity, onClose, onEndpointChange, className, allTimestamps = [], transactions = [] }: StatsPanelProps) {
   const { subsquid, cesium, recheck } = useServiceStatus();
-  const periodLabel = periodDays === 1 ? '24 dernières heures' : `${periodDays} derniers jours`;
+  const [openCategory, setOpenCategory] = useState<TxCategory | null>(null);
+  const { from, to } = periodToDates(period);
+  const days = periodToDays(period);
+  const periodLabel = period.type === 'range'
+    ? `${from.toLocaleDateString('fr-FR', { day: 'numeric', month: 'short', year: 'numeric' })} → ${to.toLocaleDateString('fr-FR', { day: 'numeric', month: 'short', year: 'numeric' })}`
+    : days === 1 ? '24 dernières heures' : `${days} derniers jours`;
   const prevStats = useRef<PeriodStats | null>(null);
 
   // Calcule le delta d'une valeur par rapport au refresh précédent
@@ -132,7 +141,7 @@ export function StatsPanel({ stats, loading, periodDays, source, currentUD, anim
           }
         </p>
         {!animationLabel && allTimestamps.length > 0 && (
-          <Sparkline timestamps={allTimestamps} periodDays={periodDays} />
+          <Sparkline timestamps={allTimestamps} fromMs={from.getTime()} toMs={to.getTime()} />
         )}
       </div>
 
@@ -309,6 +318,73 @@ export function StatsPanel({ stats, loading, periodDays, source, currentUD, anim
         </>
       )}
 
+      {/* Nature des échanges */}
+      {!loading && stats && stats.categoryBreakdown.length > 0 && stats.commentedCount > 0 && (
+        <div className="space-y-2 border-t border-[#1e1f2a] pt-3">
+          <div className="flex items-center justify-between">
+            <p className="text-[#4b5563] text-xs uppercase tracking-widest">Nature des échanges</p>
+            <p className="text-[#2e2f3a] text-[10px] font-mono">{stats.commentedCount} commentés</p>
+          </div>
+          <div className="space-y-1">
+            {stats.categoryBreakdown
+              .filter((c) => c.category !== 'migration' && c.category !== 'ticket')
+              .slice(0, 7)
+              .map((c) => {
+                const pct = Math.round((c.count / stats.commentedCount) * 100);
+                const isOpen = openCategory === c.category;
+                const detail = transactions.filter((t) => t.category === c.category && t.comment);
+                return (
+                  <div key={c.category}>
+                    <button
+                      onClick={() => setOpenCategory(isOpen ? null : c.category)}
+                      className="w-full text-left group"
+                    >
+                      <div className="flex items-center justify-between mb-0.5">
+                        <span className={`text-[11px] transition-colors ${isOpen ? 'text-white' : 'text-[#9ca3af] group-hover:text-white'}`}>
+                          {isOpen ? '▾' : '▸'} {CATEGORY_LABELS[c.category]}
+                        </span>
+                        <span className="text-[#4b5563] text-[10px] font-mono">{c.count} · {pct}%</span>
+                      </div>
+                      <div className="w-full bg-[#1e1f2a] rounded-full h-1">
+                        <div
+                          className="h-1 rounded-full transition-all duration-500"
+                          style={{ width: `${pct}%`, backgroundColor: CATEGORY_COLORS[c.category] }}
+                        />
+                      </div>
+                    </button>
+
+                    {isOpen && (
+                      <div className="mt-1.5 mb-1 bg-[#0a0b0f] border border-[#1e1f2a] rounded-lg overflow-hidden">
+                        {detail.length === 0 ? (
+                          <p className="text-[#4b5563] text-[10px] px-3 py-2">Aucun commentaire disponible.</p>
+                        ) : (
+                          <div className="max-h-48 overflow-y-auto divide-y divide-[#1e1f2a]">
+                            {detail.slice(0, 30).map((t) => (
+                              <div key={t.id} className="px-3 py-1.5 flex items-start justify-between gap-2">
+                                <p className="text-[#9ca3af] text-[10px] italic leading-snug flex-1 min-w-0 truncate">
+                                  "{t.comment}"
+                                </p>
+                                <span className="text-[#d4a843] text-[10px] font-mono shrink-0">
+                                  {t.amount.toLocaleString('fr-FR', { maximumFractionDigits: 1 })} Ğ1
+                                </span>
+                              </div>
+                            ))}
+                            {detail.length > 30 && (
+                              <p className="text-[#4b5563] text-[10px] px-3 py-1.5 text-center">
+                                +{detail.length - 30} autres
+                              </p>
+                            )}
+                          </div>
+                        )}
+                      </div>
+                    )}
+                  </div>
+                );
+              })}
+          </div>
+        </div>
+      )}
+
       {/* Footer */}
       <div className="mt-auto pt-4 border-t border-[#1e1f2a] space-y-1.5">
         <p className="text-[#2e2f3a] text-xs text-center">

src/data/arcData.ts

@@ -1,4 +1,6 @@
 import type { Transaction } from './mockData';
+import type { TxCategory } from './commentParser';
+import { aggregateCategories } from './commentParser';
 
 export interface TransactionArc {
   id:          string;
@@ -14,6 +16,8 @@ export interface TransactionArc {
   toCity:      string;
   toCountry:   string;
   toKey:       string;
+  comment:     string | null;
+  category:    TxCategory;
 }
 
 /** Corridor agrégé par paire de villes (fromCity → toCity). */
@@ -28,6 +32,8 @@ export interface Corridor {
   toCountry:   string;
   totalVolume: number;
   count:       number;
+  categories:  { category: TxCategory; count: number; volume: number }[];
+  comments:    string[]; // échantillon de commentaires bruts (max 5, non nuls)
 }
 
 export interface FlowStats {
@@ -40,21 +46,30 @@ export interface FlowStats {
 
 /** Agrège les arcs individuels en corridors ville→ville, triés par volume. */
 export function buildCorridors(arcs: TransactionArc[]): Corridor[] {
-  const map = new Map<string, Corridor>();
+  const map = new Map<string, { corridor: Omit<Corridor, 'categories' | 'comments'>; items: TransactionArc[] }>();
   for (const arc of arcs) {
     const key = `${arc.fromCity}||${arc.toCity}`;
     if (!map.has(key)) {
       map.set(key, {
-        fromCity: arc.fromCity, fromLat: arc.fromLat, fromLng: arc.fromLng, fromCountry: arc.fromCountry,
-        toCity:   arc.toCity,   toLat:   arc.toLat,   toLng:   arc.toLng,   toCountry:   arc.toCountry,
-        totalVolume: 0, count: 0,
+        corridor: {
+          fromCity: arc.fromCity, fromLat: arc.fromLat, fromLng: arc.fromLng, fromCountry: arc.fromCountry,
+          toCity:   arc.toCity,   toLat:   arc.toLat,   toLng:   arc.toLng,   toCountry:   arc.toCountry,
+          totalVolume: 0, count: 0,
+        },
+        items: [],
       });
     }
-    const c = map.get(key)!;
-    c.totalVolume += arc.amount;
-    c.count++;
+    const entry = map.get(key)!;
+    entry.corridor.totalVolume += arc.amount;
+    entry.corridor.count++;
+    entry.items.push(arc);
   }
-  return [...map.values()].sort((a, b) => b.totalVolume - a.totalVolume);
+
+  return [...map.values()].map(({ corridor, items }) => ({
+    ...corridor,
+    categories: aggregateCategories(items.map((a) => ({ category: a.category, amount: a.amount }))),
+    comments:   items.map((a) => a.comment).filter((c): c is string => !!c).slice(0, 5),
+  })).sort((a, b) => b.totalVolume - a.totalVolume);
 }
 
 export function computeFlowStats(arcs: TransactionArc[]): FlowStats {
@@ -114,6 +129,8 @@ export function buildMockArcs(transactions: Transaction[]): TransactionArc[] {
       toLat: to.lat, toLng: to.lng,
       toCity: to.city, toCountry: to.countryCode,
       toKey: to.toKey,
+      comment:  from.comment,
+      category: from.category,
     });
   }
   return arcs;

src/data/commentParser.ts

@@ -0,0 +1,300 @@
+export type TxCategory =
+  | 'migration'
+  | 'ticket'
+  | 'remboursement'
+  | 'don'
+  | 'alimentation'
+  | 'soin'
+  | 'vetements'
+  | 'culture'
+  | 'evenement'
+  | 'service'
+  | 'autre';
+
+export const CATEGORY_LABELS: Record<TxCategory, string> = {
+  migration:    'Migration',
+  ticket:       'Ticket',
+  remboursement:'Remboursement',
+  don:          'Don / Gratitude',
+  alimentation: 'Alimentation',
+  soin:         'Soin & bien-être',
+  vetements:    'Vêtements',
+  culture:      'Culture & loisirs',
+  evenement:    'Événement',
+  service:      'Service & travaux',
+  autre:        'Autre',
+};
+
+export const CATEGORY_COLORS: Record<TxCategory, string> = {
+  migration:    '#4b5563',
+  ticket:       '#6b7280',
+  remboursement:'#f59e0b',
+  don:          '#ec4899',
+  alimentation: '#22c55e',
+  soin:         '#06b6d4',
+  vetements:    '#a78bfa',
+  culture:      '#f97316',
+  evenement:    '#eab308',
+  service:      '#3b82f6',
+  autre:        '#374151',
+};
+
+// ---------------------------------------------------------------------------
+// Règles de détection — ordre = priorité, première règle qui matche gagne
+// ---------------------------------------------------------------------------
+
+interface Rule {
+  category: TxCategory;
+  patterns: RegExp[];
+}
+
+const RULES: Rule[] = [
+  {
+    category: 'migration',
+    patterns: [
+      /ğecko:csmigration/i,
+      /csmigration/i,
+      /migration\s*v[12]/i,
+      /\bğecko\b/i,
+    ],
+  },
+  {
+    category: 'ticket',
+    patterns: [
+      /\bticket\s+\d{6,}/i,
+    ],
+  },
+  {
+    category: 'remboursement',
+    patterns: [
+      /\bretour\b/i,
+      /\brendu\b/i,
+      /\bremboursement\b/i,
+      /\bdevolución\b/i,
+      /\bdevolucio\b/i,
+      /\brimborso\b/i,
+      /\brégul\b/i,
+      /\bregulariz/i,
+      /double\s*paiement/i,
+    ],
+  },
+  {
+    category: 'don',
+    patterns: [
+      /\bdon\b/i,
+      /\bdonación\b/i,
+      /\bdonazione\b/i,
+      /\bdonacio\b/i,
+      /\bcadeau\b/i,
+      /\bgratitud/i,
+      /\bgratitude\b/i,
+      /\bmerci\b/i,
+      /\bgracias\b/i,
+      /\bgràcies\b/i,
+      /\bgracies\b/i,
+      /\bobrigad/i,
+      /\bthank/i,
+      /\bgràcia/i,
+      /\bgrazie\b/i,
+      /\bgrazie\b/i,
+      /\bbienvenu/i,
+      /\bwelcome\b/i,
+      /\bchukurei\b/i,
+    ],
+  },
+  {
+    category: 'alimentation',
+    patterns: [
+      /\brepas\b/i,
+      /\bpaella\b/i,
+      /\bcrêpe\b/i,
+      /\bcrepe\b/i,
+      /\bfalafel\b/i,
+      /\bpain\b/i,
+      /\bpan\b/i,
+      /\bgâteau/i,
+      /\bgateau\b/i,
+      /\bgalleta/i,
+      /\bpastis\b/i,
+      /\bpastel\b/i,
+      /\bburger\b/i,
+      /\bkombucha\b/i,
+      /\bœuf/i,
+      /\boeufs?\b/i,
+      /\bhuevo/i,
+      /\bfromage\b/i,
+      /\bflan\b/i,
+      /\balgue/i,
+      /\blegum/i,
+      /\bfruits?\b/i,
+      /\bpomme/i,
+      /\blimonad/i,
+      /\blimonada\b/i,
+      /\blégumin/i,
+      /\bporro\b/i,
+      /\bcarbassa\b/i,
+      /\bsobrasada\b/i,
+      /\biarmelada\b/i,
+      /\bnispero/i,
+      /\bbizcocho\b/i,
+      /\bchocolat/i,
+      /\balmendra/i,
+      /\bincienso/i,
+      /\bincens/i,
+      /alimentation/i,
+      /\bépice/i,
+      /\bcava\b/i,
+      /\bvin\b/i,
+      /\baceit/i,
+      /huile\s*d.?olive/i,
+      /\bgerminado/i,
+    ],
+  },
+  {
+    category: 'soin',
+    patterns: [
+      /\bsoin\b/i,
+      /\bmassage\b/i,
+      /\bbaume\b/i,
+      /\bhuile\s*essenti/i,
+      /\btisane\b/i,
+      /\bterapia\b/i,
+      /\bthérapie\b/i,
+      /\bherboristerie\b/i,
+      /\bplante/i,
+      /\bhomeopat/i,
+      /\baromath/i,
+      /\breiki\b/i,
+      /\bacupunct/i,
+      /\bostéo/i,
+      /\bkinesio/i,
+      /\btirage\b/i,
+      /\bcart(e|as)\b/i,
+      /\bmandalas?\b/i,
+      /\bconsoude\b/i,
+      /\bsauge\b/i,
+      /\bromarin\b/i,
+      /\bserum\b/i,
+      /\bsérum\b/i,
+      /\bpeeling\b/i,
+      /\bbifasico\b/i,
+      /\bormus\b/i,
+      /eau\s*de\s*mer/i,
+    ],
+  },
+  {
+    category: 'vetements',
+    patterns: [
+      /\bjupe\b/i,
+      /\bpantalon\b/i,
+      /\bblouson\b/i,
+      /\bchaussure/i,
+      /\bvêtement/i,
+      /\bropa\b/i,
+      /\bcardigan\b/i,
+      /\bmanteau\b/i,
+      /\bchemise\b/i,
+      /\btricot\b/i,
+      /\blaine\b/i,
+      /\btissus?\b/i,
+    ],
+  },
+  {
+    category: 'culture',
+    patterns: [
+      /\blivre\b/i,
+      /\blivres\b/i,
+      /\blibro\b/i,
+      /\bmusique\b/i,
+      /\bmusica\b/i,
+      /\bmúsica\b/i,
+      /\bconcierto\b/i,
+      /\bconcert\b/i,
+      /\bcd\b/i,
+      /\bvídeo\b/i,
+      /\bvideo\b/i,
+      /\bpelícula\b/i,
+      /\bfilm\b/i,
+      /\bpoème\b/i,
+      /\bpoema\b/i,
+      /\bbd\b/i,
+      /\bdessin\b/i,
+      /\bnexus\b/i,
+      /\bnaruto\b/i,
+    ],
+  },
+  {
+    category: 'evenement',
+    patterns: [
+      /\bg1ntada\b/i,
+      /\bğ1ntada\b/i,
+      /\bmercat\b/i,
+      /\bmarché\b/i,
+      /\bjornadas?\b/i,
+      /\bfestival\b/i,
+      /\bfête\b/i,
+      /\bfiesta\b/i,
+      /\brassemblement\b/i,
+      /\bcampillo\b/i,
+      /\beutopia\b/i,
+      /\brencontre\b/i,
+    ],
+  },
+  {
+    category: 'service',
+    patterns: [
+      /\bservice\b/i,
+      /\batelier\b/i,
+      /\baccompagnement\b/i,
+      /\btravaux\b/i,
+      /\bbarnum\b/i,
+      /\baccueil\b/i,
+      /\bhébergement\b/i,
+      /\blogement\b/i,
+      /\bnuit\b/i,
+      /\bnuits\b/i,
+      /\bnit\b/i,
+      /\bnits\b/i,
+      /\bvisita\b/i,
+      /\bamortigua/i,
+      /\bamortisseur/i,
+      /\bréparation\b/i,
+    ],
+  },
+];
+
+export function parseComment(remark: string | null): TxCategory {
+  if (!remark) return 'autre';
+  const text = remark.trim();
+  if (!text) return 'autre';
+
+  for (const rule of RULES) {
+    if (rule.patterns.some((p) => p.test(text))) {
+      return rule.category;
+    }
+  }
+  return 'autre';
+}
+
+// ---------------------------------------------------------------------------
+// Agrégation sur un tableau de catégories
+// ---------------------------------------------------------------------------
+
+export interface CategoryCount {
+  category: TxCategory;
+  count: number;
+  volume: number;
+}
+
+export function aggregateCategories(
+  items: { category: TxCategory; amount: number }[]
+): CategoryCount[] {
+  const map = new Map<TxCategory, CategoryCount>();
+  for (const { category, amount } of items) {
+    if (!map.has(category)) map.set(category, { category, count: 0, volume: 0 });
+    const entry = map.get(category)!;
+    entry.count++;
+    entry.volume += amount;
+  }
+  return [...map.values()].sort((a, b) => b.count - a.count);
+}

src/data/mockData.ts

@@ -1,3 +1,5 @@
+import type { TxCategory } from './commentParser';
+
 export interface Transaction {
   id: string;
   timestamp: number; // Unix ms (entier)
@@ -8,6 +10,8 @@ export interface Transaction {
   countryCode: string; // ISO 3166-1 alpha-2, ex: "FR"
   fromKey: string; // SS58 Ğ1v2 : préfixe "g1", ~50 chars
   toKey: string;
+  comment: string | null;
+  category: TxCategory;
 }
 
 // French + European cities where Ğ1 is used
@@ -79,6 +83,8 @@ function generateTransactions(count: number, maxAgeMs: number): Transaction[] {
       countryCode: 'FR',
       fromKey: generateKey(),
       toKey: generateKey(),
+      comment: null,
+      category: 'autre',
     });
   }
 
@@ -88,12 +94,11 @@ function generateTransactions(count: number, maxAgeMs: number): Transaction[] {
 const POOL_GENERATED_AT = Date.now();
 const TRANSACTION_POOL = generateTransactions(2400, 30 * 24 * 60 * 60 * 1000);
 
-export function getTransactionsForPeriod(periodDays: number): Transaction[] {
+export function getTransactionsForPeriod(from: Date, to: Date): Transaction[] {
   const drift = Date.now() - POOL_GENERATED_AT;
-  const cutoff = Date.now() - periodDays * 24 * 60 * 60 * 1000;
   return TRANSACTION_POOL
     .map((tx) => ({ ...tx, timestamp: tx.timestamp + drift }))
-    .filter((tx) => tx.timestamp >= cutoff);
+    .filter((tx) => tx.timestamp >= from.getTime() && tx.timestamp <= to.getTime());
 }
 
 export function computeStats(transactions: Transaction[]) {
@@ -114,7 +119,20 @@ export function computeStats(transactions: Transaction[]) {
     .slice(0, 3)
     .map(([name, data]) => ({ name, ...data }));
 
-  return { totalVolume, transactionCount, topCities };
+  const catMap = new Map<import('./commentParser').TxCategory, { count: number; volume: number }>();
+  let commentedCount = 0;
+  for (const tx of transactions) {
+    if (tx.comment) commentedCount++;
+    const entry = catMap.get(tx.category) ?? { count: 0, volume: 0 };
+    entry.count++;
+    entry.volume += tx.amount;
+    catMap.set(tx.category, entry);
+  }
+  const categoryBreakdown = [...catMap.entries()]
+    .map(([category, v]) => ({ category, ...v }))
+    .sort((a, b) => b.count - a.count);
+
+  return { totalVolume, transactionCount, topCities, categoryBreakdown, commentedCount };
 }
 
 export type { };

src/hooks/useAnimation.ts

@@ -1,6 +1,7 @@
 import { useState, useMemo, useEffect } from 'react';
 import type { Transaction } from '../data/mockData';
 import type { TransactionArc } from '../data/arcData';
+import { type Period, periodToDates, periodKey } from '../types/period';
 
 export interface TimeFrame {
   label: string;
@@ -8,47 +9,57 @@ export interface TimeFrame {
   to: number;   // Unix ms
 }
 
-function buildFrames(periodDays: number): TimeFrame[] {
-  const now = Date.now();
-  const start = now - periodDays * 24 * 60 * 60 * 1000;
+function buildFrames(fromMs: number, toMs: number): TimeFrame[] {
+  const duration = toMs - fromMs;
+  const days = duration / 86_400_000;
 
   const fmt = (ms: number, opts: Intl.DateTimeFormatOptions) =>
     new Date(ms).toLocaleDateString('fr-FR', opts);
 
-  if (periodDays === 1) {
-    return Array.from({ length: 24 }, (_, i) => {
-      const from = start + i * 3_600_000;
-      const to = from + 3_600_000;
+  // ≤ 2 jours : frames horaires
+  if (days <= 2) {
+    const frames: TimeFrame[] = [];
+    let cursor = fromMs;
+    while (cursor < toMs) {
+      const from = cursor;
+      const to = Math.min(cursor + 3_600_000, toMs);
       const h = new Date(from).getHours();
-      return {
-        label: `${fmt(from, { weekday: 'short', day: 'numeric', month: 'short' })} · ${h}h – ${h + 1}h`,
+      frames.push({
+        label: `${fmt(from, { weekday: 'short', day: 'numeric', month: 'short' })} · ${h}h`,
         from,
         to,
-      };
-    });
+      });
+      cursor = to;
+    }
+    return frames;
   }
 
-  if (periodDays === 7) {
-    return Array.from({ length: 7 }, (_, i) => {
-      const from = start + i * 86_400_000;
-      const to = from + 86_400_000;
-      return {
+  // ≤ 14 jours : frames journalières
+  if (days <= 14) {
+    const frames: TimeFrame[] = [];
+    let cursor = fromMs;
+    while (cursor < toMs) {
+      const from = cursor;
+      const to = Math.min(cursor + 86_400_000, toMs);
+      frames.push({
         label: fmt(from, { weekday: 'long', day: 'numeric', month: 'short' }),
         from,
         to,
-      };
-    });
+      });
+      cursor = to;
+    }
+    return frames;
   }
 
-  // 30 days → half-week frames (3.5 days ≈ 9–10 frames)
-  const HALF_WEEK = 3.5 * 86_400_000;
+  // > 14 jours : frames hebdomadaires
+  const WEEK = 7 * 86_400_000;
   const frames: TimeFrame[] = [];
-  let cursor = start;
-  while (cursor < now) {
+  let cursor = fromMs;
+  while (cursor < toMs) {
     const from = cursor;
-    const to = Math.min(cursor + HALF_WEEK, now);
+    const to = Math.min(cursor + WEEK, toMs);
     frames.push({
-      label: `${fmt(from, { weekday: 'short', day: 'numeric', month: 'short' })} – ${fmt(to - 1, { weekday: 'short', day: 'numeric', month: 'short' })}`,
+      label: `${fmt(from, { day: 'numeric', month: 'short' })} – ${fmt(to - 1, { day: 'numeric', month: 'short' })}`,
       from,
       to,
     });
@@ -57,32 +68,33 @@ function buildFrames(periodDays: number): TimeFrame[] {
   return frames;
 }
 
-export function useAnimation(transactions: Transaction[], arcs: TransactionArc[], periodDays: number, allTimestamps: number[] = []) {
+export function useAnimation(transactions: Transaction[], arcs: TransactionArc[], period: Period, allTimestamps: number[] = []) {
   const [active, setActive] = useState(false);
   const [currentIndex, setCurrentIndex] = useState(0);
   const [playing, setPlaying] = useState(false);
   const [speed, setSpeed] = useState<1 | 2 | 4>(2);
 
-  const frames = useMemo(() => buildFrames(periodDays), [periodDays]);
+  const key = periodKey(period);
+
+  const frames = useMemo(() => {
+    const { from, to } = periodToDates(period);
+    return buildFrames(from.getTime(), to.getTime());
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [key]);
 
-  // Reset cursor when period or activation changes.
-  // Stop playback only on deactivation — not on activation, so activate() can
-  // start playing immediately without being overridden by this effect.
   useEffect(() => {
     setCurrentIndex(0);
     if (!active) setPlaying(false);
-  }, [periodDays, active]);
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [key, active]);
 
-  // Auto-advance: one step every (2000 / speed) ms
+  // Auto-advance: one step every (1500 / speed) ms
   useEffect(() => {
     if (!playing || !active) return;
-    const delay = 1500 / speed; // ×1=1500ms, ×2=750ms, ×4=375ms
+    const delay = 1500 / speed;
     const t = setTimeout(() => {
       setCurrentIndex((i) => {
-        if (i >= frames.length - 1) {
-          setPlaying(false);
-          return i;
-        }
+        if (i >= frames.length - 1) { setPlaying(false); return i; }
         return i + 1;
       });
     }, delay);
@@ -103,7 +115,6 @@ export function useAnimation(transactions: Transaction[], arcs: TransactionArc[]
     return arcs.filter((a) => a.timestamp >= frame.from && a.timestamp < frame.to);
   }, [active, arcs, frames, currentIndex]);
 
-  // Nombre total de transfers (géo + non-géo) dans la frame courante
   const frameTotalCount = useMemo(() => {
     if (!active || frames.length === 0 || allTimestamps.length === 0) return null;
     const frame = frames[currentIndex];

src/hooks/useServiceStatus.ts

@@ -17,7 +17,7 @@ export interface ServicesStatus {
 
 const TIMEOUT_MS = 8_000;
 const SLOW_THRESHOLD_MS = 2_000;
-const POLL_INTERVAL_MS = 30_000;
+const POLL_INTERVAL_MS = 60_000;
 
 async function pingSubsquid(url: string): Promise<number> {
   const controller = new AbortController();

src/hooks/useUrlState.ts

@@ -5,17 +5,34 @@
  * Écriture : useUrlSync() à appeler dans App pour maintenir l'URL à jour.
  *
  * Paramètres supportés :
- *   ?period=7&view=flow&city=Paris
+ *   ?period=7&view=flow&city=Paris        (mode glissant)
+ *   ?from=2026-01-01&to=2026-01-31&view=flow  (mode plage)
  */
 import { useEffect } from 'react';
+import { type Period, periodKey } from '../types/period';
 
-function parseInitialState(): { period: number; view: 'heatmap' | 'flow'; city: string | null } {
+function parseInitialState(): { period: Period; view: 'heatmap' | 'flow'; city: string | null } {
   const p = new URLSearchParams(window.location.search);
-  const period = parseInt(p.get('period') ?? '', 10);
+  const view = p.get('view') === 'flow' ? 'flow' : 'heatmap';
+  const city = p.get('city') ?? null;
+
+  // Mode plage : ?from=YYYY-MM-DD&to=YYYY-MM-DD
+  const fromStr = p.get('from');
+  const toStr   = p.get('to');
+  if (fromStr && toStr) {
+    const from = new Date(fromStr);
+    const to   = new Date(toStr);
+    if (!isNaN(from.getTime()) && !isNaN(to.getTime()) && from < to) {
+      return { period: { type: 'range', from, to }, view, city };
+    }
+  }
+
+  // Mode glissant : ?period=30
+  const days = parseInt(p.get('period') ?? '', 10);
   return {
-    period: Number.isFinite(period) && period >= 1 && period <= 365 ? period : 7,
-    view:   p.get('view') === 'flow' ? 'flow' : 'heatmap',
-    city:   p.get('city') ?? null,
+    period: { type: 'sliding', days: Number.isFinite(days) && days >= 1 ? days : 7 },
+    view,
+    city,
   };
 }
 
@@ -24,16 +41,23 @@ export const initialUrlState = parseInitialState();
 
 /** Écrit l'état courant dans l'URL (history.replaceState, sans recharger). */
 export function useUrlSync(
-  periodDays: number,
+  period: Period,
   viewMode: 'heatmap' | 'flow',
   focusCity: string | null,
 ) {
+  const key = periodKey(period);
   useEffect(() => {
     const p = new URLSearchParams();
-    if (periodDays !== 7) p.set('period', String(periodDays));
+    if (period.type === 'range') {
+      p.set('from', period.from.toISOString().split('T')[0]);
+      p.set('to',   period.to.toISOString().split('T')[0]);
+    } else if (period.days !== 7) {
+      p.set('period', String(period.days));
+    }
     if (viewMode !== 'heatmap') p.set('view', viewMode);
     if (focusCity) p.set('city', focusCity);
     const qs = p.toString();
     history.replaceState(null, '', qs ? `?${qs}` : window.location.pathname);
-  }, [periodDays, viewMode, focusCity]);
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [key, viewMode, focusCity]);
 }

src/services/DataService.ts

@@ -13,7 +13,9 @@
  */
 
 import { fetchTransfers, buildIdentityKeyMap, fetchCurrentUD, ss58ToDuniterKey, fetchActiveMemberKeys } from './adapters/SubsquidAdapter';
+import { type Period, periodToDates, periodToDays } from '../types/period';
 import { resolveGeoByKeys, resolveGeoByKeysBatched, cleanCityName } from './adapters/CesiumAdapter';
+import { parseComment } from '../data/commentParser';
 import {
   getTransactionsForPeriod,
   computeStats,
@@ -46,16 +48,17 @@ async function getIdentityKeyMap(): Promise<Map<string, string>> {
   return map;
 }
 
-async function fetchLiveTransactions(periodDays: number): Promise<{
+async function fetchLiveTransactions(period: Period): Promise<{
   geolocated:    Transaction[];
   arcs:          TransactionArc[];
   totalCount:    number;
   totalVolume:   number;
   allTimestamps: number[];
 }> {
-  // ~400 tx/jour sur le réseau Ğ1v2 → marge ×1.5 arrondie, minimum 2000
-  const limit = Math.max(2000, Math.ceil(periodDays * 600));
-  const { transfers: rawTransfers, totalCount } = await fetchTransfers(periodDays, limit);
+  const { from, to } = periodToDates(period);
+  const days = periodToDays(period);
+  const limit = Math.max(2000, Math.ceil(days * 600));
+  const { transfers: rawTransfers, totalCount } = await fetchTransfers(from, to, limit);
   if (rawTransfers.length === 0) return { geolocated: [], arcs: [], totalCount: 0, totalVolume: 0, allTimestamps: [] };
 
   const totalVolume = rawTransfers.reduce((s, t) => s + t.amount, 0);
@@ -112,6 +115,8 @@ async function fetchLiveTransactions(periodDays: number): Promise<{
       countryCode: fromGeo.countryCode,
       fromKey:     t.fromId,
       toKey:       t.toId,
+      comment:     t.comment,
+      category:    parseComment(t.comment),
     });
 
     // Arc : les deux extrémités géolocalisées + villes différentes
@@ -133,6 +138,8 @@ async function fetchLiveTransactions(periodDays: number): Promise<{
       toLat: toGeo.lat,     toLng: toGeo.lng,
       toCity,               toCountry: toGeo.countryCode,
       toKey: t.toId,
+      comment:  t.comment,
+      category: parseComment(t.comment),
     });
   }
 
@@ -192,6 +199,8 @@ export interface PeriodStats {
   transactionCount: number;  // total blockchain (y compris non-géolocalisés)
   geoCount:         number;  // transactions visibles sur la carte
   topCities: { name: string; volume: number; count: number; countryCode: string }[];
+  categoryBreakdown: { category: import('../data/commentParser').TxCategory; count: number; volume: number }[];
+  commentedCount: number; // nb de transactions avec un commentaire
 }
 
 export interface DataResult {
@@ -203,10 +212,11 @@ export interface DataResult {
   allTimestamps: number[];         // timestamps de TOUS les transfers (géo + non-géo)
 }
 
-export async function fetchData(periodDays: number): Promise<DataResult> {
+export async function fetchData(period: Period): Promise<DataResult> {
   if (!USE_LIVE_API) {
     await new Promise((r) => setTimeout(r, 80));
-    const transactions = getTransactionsForPeriod(periodDays);
+    const { from, to } = periodToDates(period);
+    const transactions = getTransactionsForPeriod(from, to);
     const base = computeStats(transactions);
     const arcs = buildMockArcs(transactions);
     return {
@@ -220,7 +230,7 @@ export async function fetchData(periodDays: number): Promise<DataResult> {
   }
 
   const [{ geolocated, arcs, totalCount, totalVolume, allTimestamps }, currentUD] = await Promise.all([
-    fetchLiveTransactions(periodDays),
+    fetchLiveTransactions(period),
     getCurrentUD(),
   ]);
   const base = computeStats(geolocated);
@@ -233,6 +243,8 @@ export async function fetchData(periodDays: number): Promise<DataResult> {
       transactionCount: totalCount,
       geoCount: geolocated.length,
       topCities: base.topCities,
+      categoryBreakdown: base.categoryBreakdown,
+      commentedCount: base.commentedCount,
     },
     source: 'live',
     currentUD,

src/services/PeerDiscovery.ts

@@ -0,0 +1,62 @@
+const DUNITER_RPC = 'https://rpc.duniter.org';
+const CACHE_KEY = 'geoflux-peers-v1';
+const CACHE_TTL_MS = 24 * 60 * 60 * 1000;
+
+interface PeerCache {
+  urls: string[];
+  fetchedAt: number;
+}
+
+function normalizeSquidUrl(raw: string): string {
+  const url = raw.replace(/\/$/, '');
+  return url.endsWith('/v1/graphql') ? url : `${url}/v1/graphql`;
+}
+
+export async function discoverSquidNodes(): Promise<string[]> {
+  try {
+    const cached = localStorage.getItem(CACHE_KEY);
+    if (cached) {
+      const parsed: PeerCache = JSON.parse(cached);
+      if (Date.now() - parsed.fetchedAt < CACHE_TTL_MS) return parsed.urls;
+    }
+  } catch { /* ignore */ }
+
+  const controller = new AbortController();
+  const timer = setTimeout(() => controller.abort(), 8_000);
+  try {
+    const res = await fetch(DUNITER_RPC, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ jsonrpc: '2.0', method: 'duniter_peerings', params: [], id: 1 }),
+      signal: controller.signal,
+    });
+    const data = await res.json();
+    const peers: { peer_id: string; endpoints: { protocol: string; address: string }[] }[] =
+      data?.result?.peerings ?? [];
+
+    const seen = new Set<string>();
+    const urls: string[] = [];
+    for (const peer of peers) {
+      for (const ep of peer.endpoints ?? []) {
+        if (ep.protocol === 'squid' && ep.address) {
+          const normalized = normalizeSquidUrl(ep.address);
+          if (!seen.has(normalized)) {
+            seen.add(normalized);
+            urls.push(normalized);
+          }
+        }
+      }
+    }
+
+    localStorage.setItem(CACHE_KEY, JSON.stringify({ urls, fetchedAt: Date.now() }));
+    return urls;
+  } catch {
+    return [];
+  } finally {
+    clearTimeout(timer);
+  }
+}
+
+export function clearPeerCache(): void {
+  localStorage.removeItem(CACHE_KEY);
+}

src/services/adapters/SubsquidAdapter.ts

@@ -29,6 +29,7 @@ const SubsquidTransferNodeSchema = z.object({
   from: z.object({
     linkedIdentity: z.object({ name: z.string() }).nullable(),
   }).nullable(),
+  comment: z.object({ remark: z.string() }).nullable().optional(),
 });
 
 const SubsquidResponseSchema = z.object({
@@ -52,17 +53,18 @@ export interface RawTransfer {
   fromId:       string;
   toId:         string;
   fromName:     string;   // nom d'identité Ğ1 de l'émetteur (peut être vide)
+  comment:      string | null;
 }
 
 // ---------------------------------------------------------------------------
 // Query
 // ---------------------------------------------------------------------------
 const TRANSFERS_QUERY = `
-  query GetTransfers($since: Datetime!, $limit: Int!) {
+  query GetTransfers($since: Datetime!, $until: Datetime!, $limit: Int!) {
     transfers(
       orderBy: TIMESTAMP_DESC
       first: $limit
-      filter: { timestamp: { greaterThanOrEqualTo: $since } }
+      filter: { timestamp: { greaterThanOrEqualTo: $since, lessThanOrEqualTo: $until } }
     ) {
       totalCount
       nodes {
@@ -77,6 +79,9 @@ const TRANSFERS_QUERY = `
             name
           }
         }
+        comment {
+          remark
+        }
       }
     }
   }
@@ -216,19 +221,19 @@ export interface FetchTransfersResult {
 }
 
 export async function fetchTransfers(
-  periodDays: number,
+  from: Date,
+  to: Date,
   limit = 2000
 ): Promise<FetchTransfersResult> {
-  const since = new Date(
-    Date.now() - periodDays * 24 * 60 * 60 * 1000
-  ).toISOString();
+  const since = from.toISOString();
+  const until = to.toISOString();
 
   const response = await fetch(getSubsquidUrl(), {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
     body: JSON.stringify({
       query: TRANSFERS_QUERY,
-      variables: { since, limit },
+      variables: { since, until, limit },
     }),
   });
 
@@ -253,6 +258,7 @@ export async function fetchTransfers(
       fromId:    node.fromId ?? '',
       toId:      node.toId ?? '',
       fromName:  node.from?.linkedIdentity?.name ?? '',
+      comment:   node.comment?.remark ?? null,
     })),
   };
 }

src/types/period.ts

@@ -0,0 +1,28 @@
+export type Period =
+  | { type: 'sliding'; days: number }
+  | { type: 'range'; from: Date; to: Date }
+
+export function periodToDates(period: Period): { from: Date; to: Date } {
+  if (period.type === 'range') return { from: period.from, to: period.to };
+  const to = new Date();
+  const from = new Date(to.getTime() - period.days * 86_400_000);
+  return { from, to };
+}
+
+export function periodToDays(period: Period): number {
+  const { from, to } = periodToDates(period);
+  return Math.max(1, Math.ceil((to.getTime() - from.getTime()) / 86_400_000));
+}
+
+/** Clé stable pour deps React — ne change pas entre deux renders pour le mode glissant */
+export function periodKey(period: Period): string {
+  return period.type === 'sliding'
+    ? `s-${period.days}`
+    : `r-${period.from.toISOString().split('T')[0]}-${period.to.toISOString().split('T')[0]}`;
+}
+
+/** Vrai si la plage est entièrement dans le passé (auto-refresh inutile) */
+export function isPastRange(period: Period): boolean {
+  if (period.type === 'sliding') return false;
+  return period.to.getTime() < Date.now() - 5 * 60 * 1000;
+}