Fix Wereldexport world map loading and tiles.

Self-host Leaflet locally, proxy map tiles through cockpit, set explicit map height, and invalidate size after init.

cockpit/app/routes/export_intel.py

@@ -6,7 +6,7 @@ from typing import Any, Optional
 
 import httpx
 from fastapi import APIRouter, Query, Request
-from fastapi.responses import RedirectResponse, StreamingResponse
+from fastapi.responses import RedirectResponse, Response, StreamingResponse
 from fastapi.templating import Jinja2Templates
 from pathlib import Path
 
@@ -157,6 +157,26 @@ async def api_gov_sources(country: Optional[str] = None):
     return await _proxy("GET", "/gov-sources", params=params)
 
 
+
+
+@router.get("/api/map/tiles/{z}/{x}/{y}.png")
+async def map_tile_proxy(z: int, x: int, y: int) -> Response:
+    """Proxy Carto dark basemap tiles via cockpit (no client internet needed)."""
+    host = ("a", "b", "c", "d")[(x + y) % 4]
+    url = f"https://{host}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}.png"
+    try:
+        async with httpx.AsyncClient(timeout=20.0, follow_redirects=True) as client:
+            r = await client.get(url)
+            if r.status_code != 200:
+                return Response(status_code=502, content=b"")
+            return Response(
+                content=r.content,
+                media_type="image/png",
+                headers={"Cache-Control": "public, max-age=604800"},
+            )
+    except Exception:
+        return Response(status_code=502, content=b"")
+
 @router.get("/api/export-intel/map/bundle")
 async def api_map_bundle(
     country: Optional[str] = None,