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>

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), 120_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,
@@ -223,7 +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/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);
+  };
 
-  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 }) => (
-        <button
-          key={days}
-          onClick={() => { onChange(days); setCustomOpen(false); }}
-          className={`
+  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
-            ${value === days && !customOpen
+    ${active
       ? 'bg-[#d4a843] text-[#0a0b0f] shadow-[0_0_12px_rgba(212,168,67,0.4)]'
       : 'text-[#6b7280] hover:text-[#d4a843] hover:bg-[#1a1b23]'
     }
-          `}
+  `;
+
+  const rangeLabel = isRange
+    ? `${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)]">
+
+      {/* Préréglages */}
+      {PRESETS.map(({ label, days }) => (
+        <button
+          key={days}
+          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={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={openCustom}
-          className={`
-            px-3 py-2.5 sm:py-1.5 rounded-md text-sm font-medium transition-all duration-200 cursor-pointer
-            ${isCustomActive
-              ? 'bg-[#d4a843] text-[#0a0b0f] shadow-[0_0_12px_rgba(212,168,67,0.4)]'
-              : 'text-[#6b7280] hover:text-[#d4a843] hover:bg-[#1a1b23]'
-            }
-          `}
+            onClick={commitRange}
+            disabled={!fromInput || !toInput || fromInput >= toInput}
+            className="px-2 py-1 text-xs text-[#0a0b0f] bg-[#d4a843] rounded-md disabled:opacity-30 hover:bg-[#e0b84d] transition-colors"
           >
-          {isCustomActive ? `${value} jours` : 'Personnaliser'}
+            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

@@ -6,11 +6,12 @@ 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;
@@ -68,10 +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 = [], transactions = [] }: 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 [openCategory, setOpenCategory] = useState<TxCategory | null>(null);
-  const periodLabel = periodDays === 1 ? '24 dernières heures' : `${periodDays} derniers jours`;
+  const { from, to } = periodToDates(period);
+  const days = periodToDays(period);
+  const periodLabel = period.type === 'range'
+    ? `${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
@@ -136,7 +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>
 

src/data/mockData.ts

@@ -94,12 +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[]) {

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 +9,23 @@ 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;
-      const h = new Date(from).getHours();
-      return {
-        label: `${fmt(from, { weekday: 'short', day: 'numeric', month: 'short' })} · ${h}h – ${h + 1}h`,
-        from,
-        to,
-      };
-    });
-  }
-
-  if (periodDays === 7) {
-    return Array.from({ length: 7 }, (_, i) => {
-      const from = start + i * 86_400_000;
-      const to = from + 86_400_000;
-      return {
-        label: fmt(from, { weekday: 'long', day: 'numeric', month: 'short' }),
-        from,
-        to,
-      };
-    });
-  }
-
-  // 30 days → half-week frames (3.5 days ≈ 9–10 frames)
-  const HALF_WEEK = 3.5 * 86_400_000;
+  // ≤ 2 jours : frames horaires
+  if (days <= 2) {
     const frames: TimeFrame[] = [];
-  let cursor = start;
-  while (cursor < now) {
+    let cursor = fromMs;
+    while (cursor < toMs) {
       const from = cursor;
-    const to = Math.min(cursor + HALF_WEEK, now);
+      const to = Math.min(cursor + 3_600_000, toMs);
+      const h = new Date(from).getHours();
       frames.push({
-      label: `${fmt(from, { weekday: 'short', day: 'numeric', month: 'short' })} – ${fmt(to - 1, { weekday: 'short', day: 'numeric', month: 'short' })}`,
+        label: `${fmt(from, { weekday: 'short', day: 'numeric', month: 'short' })} · ${h}h`,
         from,
         to,
       });
@@ -57,32 +34,67 @@ function buildFrames(periodDays: number): TimeFrame[] {
     return frames;
   }
 
-export function useAnimation(transactions: Transaction[], arcs: TransactionArc[], periodDays: number, allTimestamps: number[] = []) {
+  // ≤ 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;
+  }
+
+  // > 14 jours : frames hebdomadaires
+  const WEEK = 7 * 86_400_000;
+  const frames: TimeFrame[] = [];
+  let cursor = fromMs;
+  while (cursor < toMs) {
+    const from = cursor;
+    const to = Math.min(cursor + WEEK, toMs);
+    frames.push({
+      label: `${fmt(from, { day: 'numeric', month: 'short' })} – ${fmt(to - 1, { day: 'numeric', month: 'short' })}`,
+      from,
+      to,
+    });
+    cursor = to;
+  }
+  return frames;
+}
+
+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/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

@@ -13,6 +13,7 @@
  */
 
 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 {
@@ -47,16 +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);
@@ -210,10 +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 {
@@ -227,7 +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);

src/services/adapters/SubsquidAdapter.ts

@@ -60,11 +60,11 @@ export interface RawTransfer {
 // 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 {
@@ -221,19 +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 },
     }),
   });
 

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;
+}