diff --git a/fix.sh b/fix.sh
new file mode 100644
index 0000000..399141a
--- /dev/null
+++ b/fix.sh
@@ -0,0 +1,427 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Run from frontend repo root
+# (the folder that contains src/)
+test -d "src" || { echo "❌ Run this from the FRONTEND repo root (where ./src exists)"; exit 1; }
+
+TS="$(date +%Y%m%d-%H%M%S)"
+echo "✅ Patching SocioWire frontend (timestamp: $TS)"
+
+# backup
+for f in \
+  src/components/Map/useMapCore.js \
+  src/components/Map/usePostsEngine.js
+do
+  if [ -f "$f" ]; then
+    cp -a "$f" "$f.bak.$TS"
+    echo "📦 Backup: $f -> $f.bak.$TS"
+  else
+    echo "⚠️ Missing file: $f (will be created)"
+  fi
+done
+
+# -----------------------------
+# FILE: src/components/Map/useMapCore.js
+# -----------------------------
+mkdir -p src/components/Map
+cat > src/components/Map/useMapCore.js <<'EOF'
+import { useEffect, useRef, useState } from "react";
+import maplibregl from "maplibre-gl";
+import { LAST_VIEW_KEY } from "./mapConfig";
+import { getViewFromMap } from "./mapGeo";
+import { clearAllMarkers, applyOcclusionForExpanded } from "./markerManager";
+
+// MapLibre base style by theme
+function getBaseStyle(theme) {
+  const t = theme || "dark";
+  let tiles;
+
+  switch (t) {
+    case "light":
+      tiles = ["https://a.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png"];
+      break;
+    case "blue":
+      tiles = ["https://a.basemaps.cartocdn.com/rastertiles/voyager/{z}/{x}/{y}.png"];
+      break;
+    case "dark":
+    default:
+      tiles = ["https://a.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}.png"];
+      break;
+  }
+
+  return {
+    version: 8,
+    sources: {
+      "carto-base": {
+        type: "raster",
+        tiles,
+        tileSize: 256,
+        attribution: "© OpenStreetMap contributors © CARTO",
+      },
+    },
+    layers: [
+      {
+        id: "carto-base-layer",
+        type: "raster",
+        source: "carto-base",
+      },
+    ],
+  };
+}
+
+export function useMapCore(theme) {
+  const containerRef = useRef(null);
+  const mapRef = useRef(null);
+
+  const markersRef = useRef([]);
+  const expandedElRef = useRef(null);
+
+  // default large radius
+  const [viewParams, setViewParams] = useState({
+    center: null,
+    radiusKm: 750,
+  });
+
+  const [hasLastView, setHasLastView] = useState(false);
+
+  function closeExpandedIfAny() {
+    const el = expandedElRef.current;
+    if (el && el.__renderCompact) el.__renderCompact();
+    expandedElRef.current = null;
+  }
+
+  function safeUpdateViewParams(map) {
+    try {
+      const vp = getViewFromMap(map);
+      if (vp && Array.isArray(vp.center) && vp.center.length === 2) {
+        setViewParams(vp);
+      }
+    } catch {
+      // ignore
+    }
+  }
+
+  useEffect(() => {
+    if (!containerRef.current) return;
+
+    const map = new maplibregl.Map({
+      container: containerRef.current,
+      style: getBaseStyle(theme || "dark"),
+      center: [-95, 40],
+      zoom: 3.5,
+      pitch: 0,
+      bearing: 0,
+      antialias: true,
+    });
+
+    // Restore last view if available
+    let hadLastView = false;
+    try {
+      const raw = localStorage.getItem(LAST_VIEW_KEY);
+      if (raw) {
+        const v = JSON.parse(raw);
+        if (
+          typeof v.lat === "number" &&
+          typeof v.lon === "number" &&
+          typeof v.zoom === "number"
+        ) {
+          map.setCenter([v.lon, v.lat]);
+          map.setZoom(v.zoom);
+          hadLastView = true;
+        }
+      }
+    } catch {}
+    setHasLastView(hadLastView);
+
+    map.addControl(new maplibregl.NavigationControl(), "top-right");
+    mapRef.current = map;
+
+    // Re-occlude markers when post expanded
+    const reOcclude = () => {
+      const el = expandedElRef.current;
+      if (el) applyOcclusionForExpanded(markersRef, el);
+    };
+    map.on("move", reOcclude);
+    map.on("zoom", reOcclude);
+
+    // Close expanded when clicking/dragging map
+    map.on("click", () => closeExpandedIfAny());
+    map.on("dragstart", () => closeExpandedIfAny());
+
+    // ✅ CRITICAL FIX:
+    // Set view params ASAP and also on load/idle/moveend.
+    // On some devices/prod, relying on 'load' only can miss initial fetch triggers.
+    const update = () => safeUpdateViewParams(map);
+
+    map.on("load", update);
+    map.on("idle", update);
+    map.on("moveend", () => {
+      update();
+      try {
+        const vp = getViewFromMap(map);
+        const center = vp.center;
+        localStorage.setItem(
+          LAST_VIEW_KEY,
+          JSON.stringify({
+            lat: center[1],
+            lon: center[0],
+            zoom: map.getZoom(),
+          })
+        );
+      } catch {}
+    });
+
+    // Also do an early update next frame (helps first load)
+    requestAnimationFrame(update);
+
+    return () => {
+      clearAllMarkers(markersRef, expandedElRef);
+      map.remove();
+      mapRef.current = null;
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  // Theme style switch
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    // setStyle triggers style reload; we still want viewParams updated after
+    map.setStyle(getBaseStyle(theme || "dark"));
+
+    // update view params after style swap (next frame)
+    requestAnimationFrame(() => {
+      try {
+        safeUpdateViewParams(map);
+      } catch {}
+    });
+  }, [theme]);
+
+  return {
+    containerRef,
+    mapRef,
+    markersRef,
+    expandedElRef,
+    viewParams,
+    hasLastView,
+  };
+}
+EOF
+
+# -----------------------------
+# FILE: src/components/Map/usePostsEngine.js
+# -----------------------------
+cat > src/components/Map/usePostsEngine.js <<'EOF'
+import { useCallback, useEffect, useRef, useState } from "react";
+import { fetchPosts } from "../../api/client"; // keep existing endpoint for now
+import { categoryCode, matchesSubFilter, matchesTimeFilter } from "./mapFilter";
+import { haversineKm } from "./mapGeo";
+import { createMarkerForPost, clearAllMarkers } from "./markerManager";
+
+/**
+ * Posts engine:
+ * - keeps a cache (allPostsRef)
+ * - applies filters (cat/sub/time) for map + Sociowall
+ * - fetches by zone
+ *
+ * ✅ FIX: first page load must fetch even if viewParams.center is null.
+ * We fallback to map.getCenter() and default radius 750.
+ */
+export function usePostsEngine({
+  mapRef,
+  viewParams,
+  mainFilter,
+  subFilter,
+  timeFilter,
+  markersRef,
+  expandedElRef,
+}) {
+  const allPostsRef = useRef([]);
+
+  const lastFetchRef = useRef({
+    center: null,
+    radiusKm: null,
+    filterKey: "",
+  });
+
+  const [status, setStatus] = useState("Loading posts...");
+  const [visiblePosts, setVisiblePosts] = useState([]);
+  const [loadingPosts, setLoadingPosts] = useState(false);
+  const [loadError, setLoadError] = useState("");
+
+  const rebuildMarkersForFilters = useCallback(
+    (tf) => {
+      const map = mapRef.current;
+      if (!map) return;
+
+      clearAllMarkers(markersRef, expandedElRef);
+
+      const posts = allPostsRef.current || [];
+      const catCode = categoryCode(mainFilter);
+
+      const visible = posts.filter((p) => {
+        if (catCode) {
+          const pc = (p.category || p.Category || "").toString().toUpperCase();
+          if (pc !== catCode) return false;
+        }
+        if (!matchesSubFilter(p, subFilter)) return false;
+        if (!matchesTimeFilter(p.created_at || p.CreatedAt, tf)) return false;
+        return true;
+      });
+
+      visible.forEach((post) => {
+        createMarkerForPost(post, mapRef, markersRef, expandedElRef);
+      });
+
+      setVisiblePosts(visible);
+      setStatus(visible.length ? "" : "No posts found.");
+    },
+    [mapRef, markersRef, expandedElRef, mainFilter, subFilter]
+  );
+
+  useEffect(() => {
+    rebuildMarkersForFilters(timeFilter);
+  }, [timeFilter, mainFilter, subFilter, rebuildMarkersForFilters]);
+
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    let cancelled = false;
+
+    async function load() {
+      // ✅ fallback center/radius if viewParams not ready yet
+      const centerArr =
+        (viewParams && Array.isArray(viewParams.center) && viewParams.center.length === 2)
+          ? viewParams.center
+          : (() => {
+              const c = map.getCenter();
+              return [c.lng, c.lat];
+            })();
+
+      const radiusKm =
+        (viewParams && typeof viewParams.radiusKm === "number" && viewParams.radiusKm > 0)
+          ? viewParams.radiusKm
+          : 750;
+
+      const [lng, lat] = centerArr;
+
+      const filterKey = `${mainFilter}|${subFilter}|${timeFilter}`;
+      const last = lastFetchRef.current;
+
+      if (last.center && last.filterKey === filterKey) {
+        const [lastLng, lastLat] = last.center;
+        const distKm = haversineKm(lastLat, lastLng, lat, lng);
+
+        const lastR = last.radiusKm || 0;
+        const radiusChanged =
+          !lastR || Math.abs(radiusKm - lastR) / Math.max(lastR, 1) >= 0.25;
+
+        const minMoveKm = Math.max(50, radiusKm * 0.25);
+
+        if (!radiusChanged && distKm < minMoveKm) {
+          return;
+        }
+      }
+
+      try {
+        setStatus("Loading posts...");
+        setLoadingPosts(true);
+        setLoadError("");
+
+        const catCode = categoryCode(mainFilter);
+        const subCatParam =
+          subFilter && subFilter.toUpperCase() !== "ALL" && subFilter !== "All"
+            ? subFilter
+            : "";
+
+        const newPosts = await fetchPosts({
+          category: catCode,
+          subCategory: subCatParam,
+          time: "",
+          lat,
+          lon: lng,
+          radiusKm,
+        });
+
+        if (cancelled) return;
+
+        const existing = allPostsRef.current || [];
+        const byId = new Map();
+
+        for (const p of existing) {
+          if (p && typeof p.id !== "undefined") byId.set(p.id, p);
+        }
+        if (Array.isArray(newPosts)) {
+          for (const p of newPosts) {
+            if (p && typeof p.id !== "undefined" && !byId.has(p.id)) {
+              byId.set(p.id, p);
+            }
+          }
+        }
+
+        allPostsRef.current = Array.from(byId.values());
+
+        lastFetchRef.current = {
+          center: [...centerArr],
+          radiusKm,
+          filterKey,
+        };
+
+        rebuildMarkersForFilters(timeFilter);
+        setLoadingPosts(false);
+      } catch (err) {
+        console.error("Erreur chargement posts:", err);
+        if (!cancelled) {
+          setStatus("Error loading posts.");
+          setLoadError("Error loading posts.");
+          setLoadingPosts(false);
+        }
+      }
+    }
+
+    load();
+
+    return () => {
+      cancelled = true;
+    };
+  }, [viewParams, mainFilter, subFilter, timeFilter, mapRef, rebuildMarkersForFilters, markersRef, expandedElRef]);
+
+  const handleIncomingPost = useCallback(
+    (p) => {
+      allPostsRef.current = [...allPostsRef.current, p];
+
+      const catCode = categoryCode(mainFilter);
+      if (catCode) {
+        const pc = (p.category || p.Category || "").toString().toUpperCase();
+        if (pc !== catCode) return;
+      }
+      if (!matchesSubFilter(p, subFilter)) return;
+      if (!matchesTimeFilter(p.created_at || p.CreatedAt, timeFilter)) return;
+
+      createMarkerForPost(p, mapRef, markersRef, expandedElRef);
+      setVisiblePosts((current) => [...current, p]);
+    },
+    [mainFilter, subFilter, timeFilter, mapRef, markersRef, expandedElRef]
+  );
+
+  return {
+    status,
+    visiblePosts,
+    loadingPosts,
+    loadError,
+    handleIncomingPost,
+  };
+}
+EOF
+
+echo "✅ Files written."
+
+echo ""
+echo "Next:"
+echo "  npm run dev"
+echo "or build/deploy as you do normally."
+echo ""
+echo "Tip: open DevTools Network -> you should see /api/posts on first page load."
diff --git a/package-lock.json b/package-lock.json
index 5c72180..92bd153 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -58,7 +58,6 @@
       "integrity": "sha512-e7jT4DxYvIDLk1ZHmU/m/mB19rex9sv0c2ftBtjSBv+kVM/902eh0fINUzD7UwLLNR+jU585GxUJ8/EBfAM5fw==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@babel/code-frame": "^7.27.1",
         "@babel/generator": "^7.28.5",
@@ -1075,7 +1074,6 @@
       "integrity": "sha512-MWtvHrGZLFttgeEj28VXHxpmwYbor/ATPYbBfSFZEIRK0ecCFLl2Qo55z52Hss+UV9CRN7trSeq1zbgx7YDWWg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "csstype": "^3.2.2"
       }
@@ -1126,7 +1124,6 @@
       "integrity": "sha512-NZyJarBfL7nWwIq+FDL6Zp/yHEhePMNnnJ0y3qfieCrmNvYct8uvtiV41UvlSe6apAfk0fY1FbWx+NwfmpvtTg==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -1249,7 +1246,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "baseline-browser-mapping": "^2.9.0",
         "caniuse-lite": "^1.0.30001759",
@@ -1551,7 +1547,6 @@
       "integrity": "sha512-BhHmn2yNOFA9H9JmmIVKJmd288g9hrVRDkdoIgRCRuSySRUHH7r/DI6aAXW9T1WwUuY3DFgrcaqB+deURBLR5g==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.8.0",
         "@eslint-community/regexpp": "^4.12.1",
@@ -2772,7 +2767,6 @@
       "integrity": "sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=12"
       },
@@ -2858,7 +2852,6 @@
       "resolved": "https://registry.npmjs.org/react/-/react-19.2.1.tgz",
       "integrity": "sha512-DGrYcCWK7tvYMnWh79yrPHt+vdx9tY+1gPZa7nJQtO/p8bLTDaHp4dzwEhQB7pZ4Xe3ok4XKuEPrVuc+wlpkmw==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -2868,7 +2861,6 @@
       "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.1.tgz",
       "integrity": "sha512-ibrK8llX2a4eOskq1mXKu/TGZj9qzomO+sNfO98M6d9zIPOEhlBkMkBUBLd1vgS0gQsLDBzA+8jJBVXDnfHmJg==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "scheduler": "^0.27.0"
       },
@@ -3171,7 +3163,6 @@
       "integrity": "sha512-u09tdk/huMiN8xwoiBbig197jKdCamQTtOruSalOzbqGje3jdHiV0njQlAW0YvzoahkirFePNQ4RYlfnRQpXZA==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@oxc-project/runtime": "0.97.0",
         "fdir": "^6.5.0",
@@ -3294,7 +3285,6 @@
       "integrity": "sha512-AvvthqfqrAhNH9dnfmrfKzX5upOdjUVJYFqNSlkmGf64gRaTzlPwz99IHYnVs28qYAybvAlBV+H7pn0saFY4Ig==",
       "dev": true,
       "license": "MIT",
-      "peer": true,
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }
diff --git a/src/components/Map/useMapCore.js b/src/components/Map/useMapCore.js
index 7261fed..2387ece 100644
--- a/src/components/Map/useMapCore.js
+++ b/src/components/Map/useMapCore.js
@@ -4,7 +4,7 @@ import { LAST_VIEW_KEY } from "./mapConfig";
 import { getViewFromMap } from "./mapGeo";
 import { clearAllMarkers, applyOcclusionForExpanded } from "./markerManager";
 
-// renvoie le style MapLibre en fonction du thème
+// MapLibre base style by theme
 function getBaseStyle(theme) {
   const t = theme || "dark";
   let tiles;
@@ -49,21 +49,31 @@ export function useMapCore(theme) {
   const markersRef = useRef([]);
   const expandedElRef = useRef(null);
 
-  // ✅ default plus large
+  // default large radius
   const [viewParams, setViewParams] = useState({
     center: null,
     radiusKm: 750,
   });
+
   const [hasLastView, setHasLastView] = useState(false);
 
   function closeExpandedIfAny() {
     const el = expandedElRef.current;
-    if (el && el.__setExpanded) {
-      el.__setExpanded(false);
-    }
+    if (el && el.__renderCompact) el.__renderCompact();
     expandedElRef.current = null;
   }
 
+  function safeUpdateViewParams(map) {
+    try {
+      const vp = getViewFromMap(map);
+      if (vp && Array.isArray(vp.center) && vp.center.length === 2) {
+        setViewParams(vp);
+      }
+    } catch {
+      // ignore
+    }
+  }
+
   useEffect(() => {
     if (!containerRef.current) return;
 
@@ -77,7 +87,7 @@ export function useMapCore(theme) {
       antialias: true,
     });
 
-    // Reprise dernière vue
+    // Restore last view if available
     let hadLastView = false;
     try {
       const raw = localStorage.getItem(LAST_VIEW_KEY);
@@ -99,7 +109,7 @@ export function useMapCore(theme) {
     map.addControl(new maplibregl.NavigationControl(), "top-right");
     mapRef.current = map;
 
-    // If a post is expanded, re-apply occlusion on zoom/move (only hides overlapping ones)
+    // Re-occlude markers when post expanded
     const reOcclude = () => {
       const el = expandedElRef.current;
       if (el) applyOcclusionForExpanded(markersRef, el);
@@ -107,24 +117,21 @@ export function useMapCore(theme) {
     map.on("move", reOcclude);
     map.on("zoom", reOcclude);
 
-    // Close expanded post when clicking on the map (outside markers)
-    map.on("click", () => {
-      const el = expandedElRef.current;
-      if (el && el.__renderCompact) {
-        el.__renderCompact();
-        expandedElRef.current = null;
-      }
-    });
+    // Close expanded when clicking/dragging map
+    map.on("click", () => closeExpandedIfAny());
+    map.on("dragstart", () => closeExpandedIfAny());
 
-    map.on("load", () => {
-      const vp = getViewFromMap(map);
-      setViewParams(vp);
-    });
+    // ✅ CRITICAL FIX:
+    // Set view params ASAP and also on load/idle/moveend.
+    // On some devices/prod, relying on 'load' only can miss initial fetch triggers.
+    const update = () => safeUpdateViewParams(map);
 
+    map.on("load", update);
+    map.on("idle", update);
     map.on("moveend", () => {
-      const vp = getViewFromMap(map);
-      setViewParams(vp);
+      update();
       try {
+        const vp = getViewFromMap(map);
         const center = vp.center;
         localStorage.setItem(
           LAST_VIEW_KEY,
@@ -137,9 +144,8 @@ export function useMapCore(theme) {
       } catch {}
     });
 
-    // IMPORTANT: click/drag sur la map => fermer le gros post
-    map.on("click", () => closeExpandedIfAny());
-    map.on("dragstart", () => closeExpandedIfAny());
+    // Also do an early update next frame (helps first load)
+    requestAnimationFrame(update);
 
     return () => {
       clearAllMarkers(markersRef, expandedElRef);
@@ -149,10 +155,20 @@ export function useMapCore(theme) {
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, []);
 
+  // Theme style switch
   useEffect(() => {
     const map = mapRef.current;
     if (!map) return;
+
+    // setStyle triggers style reload; we still want viewParams updated after
     map.setStyle(getBaseStyle(theme || "dark"));
+
+    // update view params after style swap (next frame)
+    requestAnimationFrame(() => {
+      try {
+        safeUpdateViewParams(map);
+      } catch {}
+    });
   }, [theme]);
 
   return {
diff --git a/src/components/Map/useMapCore.js.bak.20251213-143011 b/src/components/Map/useMapCore.js.bak.20251213-143011
new file mode 100644
index 0000000..7261fed
--- /dev/null
+++ b/src/components/Map/useMapCore.js.bak.20251213-143011
@@ -0,0 +1,166 @@
+import { useEffect, useRef, useState } from "react";
+import maplibregl from "maplibre-gl";
+import { LAST_VIEW_KEY } from "./mapConfig";
+import { getViewFromMap } from "./mapGeo";
+import { clearAllMarkers, applyOcclusionForExpanded } from "./markerManager";
+
+// renvoie le style MapLibre en fonction du thème
+function getBaseStyle(theme) {
+  const t = theme || "dark";
+  let tiles;
+
+  switch (t) {
+    case "light":
+      tiles = ["https://a.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png"];
+      break;
+    case "blue":
+      tiles = ["https://a.basemaps.cartocdn.com/rastertiles/voyager/{z}/{x}/{y}.png"];
+      break;
+    case "dark":
+    default:
+      tiles = ["https://a.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}.png"];
+      break;
+  }
+
+  return {
+    version: 8,
+    sources: {
+      "carto-base": {
+        type: "raster",
+        tiles,
+        tileSize: 256,
+        attribution: "© OpenStreetMap contributors © CARTO",
+      },
+    },
+    layers: [
+      {
+        id: "carto-base-layer",
+        type: "raster",
+        source: "carto-base",
+      },
+    ],
+  };
+}
+
+export function useMapCore(theme) {
+  const containerRef = useRef(null);
+  const mapRef = useRef(null);
+
+  const markersRef = useRef([]);
+  const expandedElRef = useRef(null);
+
+  // ✅ default plus large
+  const [viewParams, setViewParams] = useState({
+    center: null,
+    radiusKm: 750,
+  });
+  const [hasLastView, setHasLastView] = useState(false);
+
+  function closeExpandedIfAny() {
+    const el = expandedElRef.current;
+    if (el && el.__setExpanded) {
+      el.__setExpanded(false);
+    }
+    expandedElRef.current = null;
+  }
+
+  useEffect(() => {
+    if (!containerRef.current) return;
+
+    const map = new maplibregl.Map({
+      container: containerRef.current,
+      style: getBaseStyle(theme || "dark"),
+      center: [-95, 40],
+      zoom: 3.5,
+      pitch: 0,
+      bearing: 0,
+      antialias: true,
+    });
+
+    // Reprise dernière vue
+    let hadLastView = false;
+    try {
+      const raw = localStorage.getItem(LAST_VIEW_KEY);
+      if (raw) {
+        const v = JSON.parse(raw);
+        if (
+          typeof v.lat === "number" &&
+          typeof v.lon === "number" &&
+          typeof v.zoom === "number"
+        ) {
+          map.setCenter([v.lon, v.lat]);
+          map.setZoom(v.zoom);
+          hadLastView = true;
+        }
+      }
+    } catch {}
+    setHasLastView(hadLastView);
+
+    map.addControl(new maplibregl.NavigationControl(), "top-right");
+    mapRef.current = map;
+
+    // If a post is expanded, re-apply occlusion on zoom/move (only hides overlapping ones)
+    const reOcclude = () => {
+      const el = expandedElRef.current;
+      if (el) applyOcclusionForExpanded(markersRef, el);
+    };
+    map.on("move", reOcclude);
+    map.on("zoom", reOcclude);
+
+    // Close expanded post when clicking on the map (outside markers)
+    map.on("click", () => {
+      const el = expandedElRef.current;
+      if (el && el.__renderCompact) {
+        el.__renderCompact();
+        expandedElRef.current = null;
+      }
+    });
+
+    map.on("load", () => {
+      const vp = getViewFromMap(map);
+      setViewParams(vp);
+    });
+
+    map.on("moveend", () => {
+      const vp = getViewFromMap(map);
+      setViewParams(vp);
+      try {
+        const center = vp.center;
+        localStorage.setItem(
+          LAST_VIEW_KEY,
+          JSON.stringify({
+            lat: center[1],
+            lon: center[0],
+            zoom: map.getZoom(),
+          })
+        );
+      } catch {}
+    });
+
+    // IMPORTANT: click/drag sur la map => fermer le gros post
+    map.on("click", () => closeExpandedIfAny());
+    map.on("dragstart", () => closeExpandedIfAny());
+
+    return () => {
+      clearAllMarkers(markersRef, expandedElRef);
+      map.remove();
+      mapRef.current = null;
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+    map.setStyle(getBaseStyle(theme || "dark"));
+  }, [theme]);
+
+  return {
+    containerRef,
+    mapRef,
+    markersRef,
+    expandedElRef,
+    viewParams,
+    hasLastView,
+  };
+}
diff --git a/src/components/Map/usePostsEngine.js b/src/components/Map/usePostsEngine.js
index 2e15616..ce88eca 100644
--- a/src/components/Map/usePostsEngine.js
+++ b/src/components/Map/usePostsEngine.js
@@ -1,14 +1,17 @@
 import { useCallback, useEffect, useRef, useState } from "react";
-import { fetchPosts } from "../../api/client";
+import { fetchPosts } from "../../api/client"; // keep existing endpoint for now
 import { categoryCode, matchesSubFilter, matchesTimeFilter } from "./mapFilter";
 import { haversineKm } from "./mapGeo";
 import { createMarkerForPost, clearAllMarkers } from "./markerManager";
 
 /**
- * Gère :
- * - posts en mémoire (allPostsRef)
- * - filtres (cat / sous-cat / temps) appliqués sur la map + Sociowall
- * - fetch par zone (backend)
+ * Posts engine:
+ * - keeps a cache (allPostsRef)
+ * - applies filters (cat/sub/time) for map + Sociowall
+ * - fetches by zone
+ *
+ * ✅ FIX: first page load must fetch even if viewParams.center is null.
+ * We fallback to map.getCenter() and default radius 750.
  */
 export function usePostsEngine({
   mapRef,
@@ -20,6 +23,7 @@ export function usePostsEngine({
   expandedElRef,
 }) {
   const allPostsRef = useRef([]);
+
   const lastFetchRef = useRef({
     center: null,
     radiusKm: null,
@@ -31,7 +35,6 @@ export function usePostsEngine({
   const [loadingPosts, setLoadingPosts] = useState(false);
   const [loadError, setLoadError] = useState("");
 
-  // Applique tous les filtres sur ce qu'on a déjà
   const rebuildMarkersForFilters = useCallback(
     (tf) => {
       const map = mapRef.current;
@@ -43,14 +46,11 @@ export function usePostsEngine({
       const catCode = categoryCode(mainFilter);
 
       const visible = posts.filter((p) => {
-        // catégorie
         if (catCode) {
           const pc = (p.category || p.Category || "").toString().toUpperCase();
           if (pc !== catCode) return false;
         }
-        // sous-catégorie
         if (!matchesSubFilter(p, subFilter)) return false;
-        // temps
         if (!matchesTimeFilter(p.created_at || p.CreatedAt, tf)) return false;
         return true;
       });
@@ -65,39 +65,46 @@ export function usePostsEngine({
     [mapRef, markersRef, expandedElRef, mainFilter, subFilter]
   );
 
-  // Changement de cat / sous-cat / temps → filtre instantané
   useEffect(() => {
     rebuildMarkersForFilters(timeFilter);
   }, [timeFilter, mainFilter, subFilter, rebuildMarkersForFilters]);
 
-  // Fetch backend quand la vue bouge assez (OU quand le zoom change beaucoup le radius)
   useEffect(() => {
     const map = mapRef.current;
     if (!map) return;
-    if (!viewParams.center) return;
 
     let cancelled = false;
 
     async function load() {
-      const [lng, lat] = viewParams.center;
-      const radiusKm = viewParams.radiusKm || 750;
-      const filterKey = `${mainFilter}|${subFilter}`;
+      // ✅ fallback center/radius if viewParams not ready yet
+      const centerArr =
+        (viewParams && Array.isArray(viewParams.center) && viewParams.center.length === 2)
+          ? viewParams.center
+          : (() => {
+              const c = map.getCenter();
+              return [c.lng, c.lat];
+            })();
 
+      const radiusKm =
+        (viewParams && typeof viewParams.radiusKm === "number" && viewParams.radiusKm > 0)
+          ? viewParams.radiusKm
+          : 750;
+
+      const [lng, lat] = centerArr;
+
+      const filterKey = `${mainFilter}|${subFilter}|${timeFilter}`;
       const last = lastFetchRef.current;
 
       if (last.center && last.filterKey === filterKey) {
         const [lastLng, lastLat] = last.center;
-        const distKm = haversineKm(lastLat, lastLng, viewParams.center[1], lng);
+        const distKm = haversineKm(lastLat, lastLng, lat, lng);
 
-        // ✅ refetch si le radius change pas mal (zoom in/out)
         const lastR = last.radiusKm || 0;
         const radiusChanged =
-          !lastR || Math.abs(radiusKm - lastR) / Math.max(lastR, 1) >= 0.25; // 25%
+          !lastR || Math.abs(radiusKm - lastR) / Math.max(lastR, 1) >= 0.25;
 
-        // move threshold moins agressif
         const minMoveKm = Math.max(50, radiusKm * 0.25);
 
-        // Si ni zoom ni move significatif => skip
         if (!radiusChanged && distKm < minMoveKm) {
           return;
         }
@@ -129,11 +136,8 @@ export function usePostsEngine({
         const byId = new Map();
 
         for (const p of existing) {
-          if (p && typeof p.id !== "undefined") {
-            byId.set(p.id, p);
-          }
+          if (p && typeof p.id !== "undefined") byId.set(p.id, p);
         }
-
         if (Array.isArray(newPosts)) {
           for (const p of newPosts) {
             if (p && typeof p.id !== "undefined" && !byId.has(p.id)) {
@@ -145,12 +149,11 @@ export function usePostsEngine({
         allPostsRef.current = Array.from(byId.values());
 
         lastFetchRef.current = {
-          center: [...viewParams.center],
+          center: [...centerArr],
           radiusKm,
           filterKey,
         };
 
-        // Après réponse du backend → on ré-applique les filtres
         rebuildMarkersForFilters(timeFilter);
         setLoadingPosts(false);
       } catch (err) {
@@ -168,31 +171,19 @@ export function usePostsEngine({
     return () => {
       cancelled = true;
     };
-  }, [
-    viewParams,
-    mainFilter,
-    subFilter,
-    mapRef,
-    rebuildMarkersForFilters,
-    timeFilter,
-  ]);
+  }, [viewParams, mainFilter, subFilter, timeFilter, mapRef, rebuildMarkersForFilters, markersRef, expandedElRef]);
 
-  // Nouveau post reçu via WebSocket
   const handleIncomingPost = useCallback(
     (p) => {
-      // ajoute au cache global
       allPostsRef.current = [...allPostsRef.current, p];
 
-      // si ça matche les filtres courants → on l'affiche
       const catCode = categoryCode(mainFilter);
       if (catCode) {
         const pc = (p.category || p.Category || "").toString().toUpperCase();
         if (pc !== catCode) return;
       }
       if (!matchesSubFilter(p, subFilter)) return;
-      if (!matchesTimeFilter(p.created_at || p.CreatedAt, timeFilter)) {
-        return;
-      }
+      if (!matchesTimeFilter(p.created_at || p.CreatedAt, timeFilter)) return;
 
       createMarkerForPost(p, mapRef, markersRef, expandedElRef);
       setVisiblePosts((current) => [...current, p]);
diff --git a/src/components/Map/usePostsEngine.js.bak.20251213-143011 b/src/components/Map/usePostsEngine.js.bak.20251213-143011
new file mode 100644
index 0000000..2e15616
--- /dev/null
+++ b/src/components/Map/usePostsEngine.js.bak.20251213-143011
@@ -0,0 +1,210 @@
+import { useCallback, useEffect, useRef, useState } from "react";
+import { fetchPosts } from "../../api/client";
+import { categoryCode, matchesSubFilter, matchesTimeFilter } from "./mapFilter";
+import { haversineKm } from "./mapGeo";
+import { createMarkerForPost, clearAllMarkers } from "./markerManager";
+
+/**
+ * Gère :
+ * - posts en mémoire (allPostsRef)
+ * - filtres (cat / sous-cat / temps) appliqués sur la map + Sociowall
+ * - fetch par zone (backend)
+ */
+export function usePostsEngine({
+  mapRef,
+  viewParams,
+  mainFilter,
+  subFilter,
+  timeFilter,
+  markersRef,
+  expandedElRef,
+}) {
+  const allPostsRef = useRef([]);
+  const lastFetchRef = useRef({
+    center: null,
+    radiusKm: null,
+    filterKey: "",
+  });
+
+  const [status, setStatus] = useState("Loading posts...");
+  const [visiblePosts, setVisiblePosts] = useState([]);
+  const [loadingPosts, setLoadingPosts] = useState(false);
+  const [loadError, setLoadError] = useState("");
+
+  // Applique tous les filtres sur ce qu'on a déjà
+  const rebuildMarkersForFilters = useCallback(
+    (tf) => {
+      const map = mapRef.current;
+      if (!map) return;
+
+      clearAllMarkers(markersRef, expandedElRef);
+
+      const posts = allPostsRef.current || [];
+      const catCode = categoryCode(mainFilter);
+
+      const visible = posts.filter((p) => {
+        // catégorie
+        if (catCode) {
+          const pc = (p.category || p.Category || "").toString().toUpperCase();
+          if (pc !== catCode) return false;
+        }
+        // sous-catégorie
+        if (!matchesSubFilter(p, subFilter)) return false;
+        // temps
+        if (!matchesTimeFilter(p.created_at || p.CreatedAt, tf)) return false;
+        return true;
+      });
+
+      visible.forEach((post) => {
+        createMarkerForPost(post, mapRef, markersRef, expandedElRef);
+      });
+
+      setVisiblePosts(visible);
+      setStatus(visible.length ? "" : "No posts found.");
+    },
+    [mapRef, markersRef, expandedElRef, mainFilter, subFilter]
+  );
+
+  // Changement de cat / sous-cat / temps → filtre instantané
+  useEffect(() => {
+    rebuildMarkersForFilters(timeFilter);
+  }, [timeFilter, mainFilter, subFilter, rebuildMarkersForFilters]);
+
+  // Fetch backend quand la vue bouge assez (OU quand le zoom change beaucoup le radius)
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+    if (!viewParams.center) return;
+
+    let cancelled = false;
+
+    async function load() {
+      const [lng, lat] = viewParams.center;
+      const radiusKm = viewParams.radiusKm || 750;
+      const filterKey = `${mainFilter}|${subFilter}`;
+
+      const last = lastFetchRef.current;
+
+      if (last.center && last.filterKey === filterKey) {
+        const [lastLng, lastLat] = last.center;
+        const distKm = haversineKm(lastLat, lastLng, viewParams.center[1], lng);
+
+        // ✅ refetch si le radius change pas mal (zoom in/out)
+        const lastR = last.radiusKm || 0;
+        const radiusChanged =
+          !lastR || Math.abs(radiusKm - lastR) / Math.max(lastR, 1) >= 0.25; // 25%
+
+        // move threshold moins agressif
+        const minMoveKm = Math.max(50, radiusKm * 0.25);
+
+        // Si ni zoom ni move significatif => skip
+        if (!radiusChanged && distKm < minMoveKm) {
+          return;
+        }
+      }
+
+      try {
+        setStatus("Loading posts...");
+        setLoadingPosts(true);
+        setLoadError("");
+
+        const catCode = categoryCode(mainFilter);
+        const subCatParam =
+          subFilter && subFilter.toUpperCase() !== "ALL" && subFilter !== "All"
+            ? subFilter
+            : "";
+
+        const newPosts = await fetchPosts({
+          category: catCode,
+          subCategory: subCatParam,
+          time: "",
+          lat,
+          lon: lng,
+          radiusKm,
+        });
+
+        if (cancelled) return;
+
+        const existing = allPostsRef.current || [];
+        const byId = new Map();
+
+        for (const p of existing) {
+          if (p && typeof p.id !== "undefined") {
+            byId.set(p.id, p);
+          }
+        }
+
+        if (Array.isArray(newPosts)) {
+          for (const p of newPosts) {
+            if (p && typeof p.id !== "undefined" && !byId.has(p.id)) {
+              byId.set(p.id, p);
+            }
+          }
+        }
+
+        allPostsRef.current = Array.from(byId.values());
+
+        lastFetchRef.current = {
+          center: [...viewParams.center],
+          radiusKm,
+          filterKey,
+        };
+
+        // Après réponse du backend → on ré-applique les filtres
+        rebuildMarkersForFilters(timeFilter);
+        setLoadingPosts(false);
+      } catch (err) {
+        console.error("Erreur chargement posts:", err);
+        if (!cancelled) {
+          setStatus("Error loading posts.");
+          setLoadError("Error loading posts.");
+          setLoadingPosts(false);
+        }
+      }
+    }
+
+    load();
+
+    return () => {
+      cancelled = true;
+    };
+  }, [
+    viewParams,
+    mainFilter,
+    subFilter,
+    mapRef,
+    rebuildMarkersForFilters,
+    timeFilter,
+  ]);
+
+  // Nouveau post reçu via WebSocket
+  const handleIncomingPost = useCallback(
+    (p) => {
+      // ajoute au cache global
+      allPostsRef.current = [...allPostsRef.current, p];
+
+      // si ça matche les filtres courants → on l'affiche
+      const catCode = categoryCode(mainFilter);
+      if (catCode) {
+        const pc = (p.category || p.Category || "").toString().toUpperCase();
+        if (pc !== catCode) return;
+      }
+      if (!matchesSubFilter(p, subFilter)) return;
+      if (!matchesTimeFilter(p.created_at || p.CreatedAt, timeFilter)) {
+        return;
+      }
+
+      createMarkerForPost(p, mapRef, markersRef, expandedElRef);
+      setVisiblePosts((current) => [...current, p]);
+    },
+    [mainFilter, subFilter, timeFilter, mapRef, markersRef, expandedElRef]
+  );
+
+  return {
+    status,
+    visiblePosts,
+    loadingPosts,
+    loadError,
+    handleIncomingPost,
+  };
+}