Sportski objekti: API + Leaflet map page + address enrichment

DB: pgz_sport.sportski_objekti (103 objekti, 103 s geo, 60 s adresom, 31 tip)

API:
- /api/v2/sportski-objekti (filter: tip, grad, sport, q)
- /api/v2/sportski-objekti/meta (tipovi, gradovi, sportovi, ukupno)

Frontend:
- /static/objekti.html — Leaflet (OpenStreetMap) interactive map
- 3 dropdown filter (tip, grad, sport) + search
- Side panel s listom + map markers s ikonama (🏟️⚽🏊⛵🎿🎳⛸️🎯🥌🏃)
- Popup: naziv, tip, kapacitet, adresa, upravitelj, izgradeno, sportovi, web link, Google Maps link
- /objekti, /sport/objekti, /sport/api/v2/sportski-objekti routes

Sidebar app.html: +Sportski objekti link
Background: scripts/objekti_enrich_address.py (Nominatim reverse-geocode 60 objekata bez adrese)

pgz_sport_api.py

@@ -2835,6 +2835,56 @@ def auth_me_v2_alias(authorization: str = Header(None)):
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 
+
+@app.get("/api/v2/sportski-objekti")
+def sportski_objekti_v2_list(tip: str = None, grad: str = None, sport: str = None, q: str = None, limit: int = 500):
+    """Sportski objekti PGŽ s filterima."""
+    where = ["aktivan = true"]
+    params = []
+    if tip:
+        where.append("tip = %s"); params.append(tip)
+    if grad:
+        where.append("grad = %s"); params.append(grad)
+    if sport:
+        where.append("%s = ANY(sportovi)"); params.append(sport)
+    if q:
+        where.append("(naziv ILIKE %s OR adresa ILIKE %s OR upravitelj ILIKE %s)")
+        params.extend([f"%{q}%"]*3)
+    
+    rows = fetch(f"""
+        SELECT id, naziv, tip, grad, adresa, lat, lng, upravitelj, kapacitet,
+               sportovi, izgradeno, obnovljeno_god, "veličina" AS velicina, natkrita,
+               napomena, web
+        FROM pgz_sport.sportski_objekti 
+        WHERE {' AND '.join(where)}
+        ORDER BY grad, naziv
+        LIMIT %s
+    """, tuple(params) + (limit,))
+    return {"count": len(rows), "rows": rows}
+
+
+@app.get("/api/v2/sportski-objekti/meta")
+def sportski_objekti_meta():
+    """Dropdown options za filter."""
+    tipovi = fetch("SELECT tip, count(*) AS broj FROM pgz_sport.sportski_objekti WHERE aktivan = true AND tip IS NOT NULL GROUP BY tip ORDER BY broj DESC")
+    gradovi = fetch("SELECT grad, count(*) AS broj FROM pgz_sport.sportski_objekti WHERE aktivan = true AND grad IS NOT NULL GROUP BY grad ORDER BY broj DESC")
+    sportovi = fetch("SELECT DISTINCT unnest(sportovi) AS sport, count(*) AS broj FROM pgz_sport.sportski_objekti WHERE aktivan = true AND sportovi IS NOT NULL GROUP BY sport ORDER BY broj DESC LIMIT 50")
+    return {
+        "tipovi": tipovi,
+        "gradovi": gradovi,
+        "sportovi": sportovi,
+        "ukupno": (fetch("SELECT count(*) AS n FROM pgz_sport.sportski_objekti WHERE aktivan = true")[0])["n"]
+    }
+
+
+@app.get("/objekti")
+@app.get("/objekti/")
+@app.get("/sport/objekti")
+@app.get("/sport/objekti/")
+def serve_objekti():
+    from fastapi.responses import FileResponse
+    return FileResponse("/opt/pgz-sport/static/objekti.html")
+
 @app.get("/")
 def root(request: Request):
     host = request.headers.get("host", "")