HNS+UI: 4 nova endpointa + multi-sport schema (M2M kategorije + player_stats)

Endpoints:
- GET /api/v2/enrich-sources — sport→source mapping
- GET /api/v2/klubovi/priority-sort — financirani/godišnjak prvi
- GET /api/v2/clan/{id}/kategorije — many-to-many kategorije
- GET /api/v2/clan/{id}/full — kompletna slika (profil+kategorije+sezone+utakmice+stats)
- POST /api/v2/export/klubovi — XLSX export selektiranih

Schema:
- pgz_sport.clan_kategorije (M2M: igrač u juniorskoj+seniorskoj)
- pgz_sport.player_stats (multi-sport: nogomet/košarka/rukomet/odbojka/vaterpolo)
- pgz_sport.klub_roster (multi-source)
- pgz_sport.enrichment_sources (sport→izvor)
- View: v_pgz_priority_klubovi (financiran || u_godisnjaku)
- View: v_klubovi_priority_sort (priority sort)

Sport harvesters scaffold:
- scripts/sport_harvesters/__base.py (SportHarvester class)
- hks_basketball.py, hrs_handball.py, hos_volleyball.py, hvs_waterpolo.py

pgz_sport_api.py

@@ -18,6 +18,7 @@ Changes (2026-05-05, sub-agent W5):
 
 from fastapi import FastAPI, HTTPException, Query, Body, Header, Depends, UploadFile, File, Form, Request
 import json
+import time
 from fastapi.middleware.cors import CORSMiddleware
 from pydantic import BaseModel
 from typing import Optional, List
@@ -2072,6 +2073,116 @@ def dashboard_hns_coverage():
     return stats[0] if stats else {}
 
 
+@app.get("/api/v2/enrich-sources")
+def enrich_sources():
+    """Sport→source mapping za frontend Obogati podatke dugme."""
+    rows = fetch("SELECT * FROM pgz_sport.enrichment_sources ORDER BY sport")
+    return {"sources": rows}
+
+
+@app.get("/api/v2/clan/{clan_id}/kategorije")
+def clan_kategorije(clan_id: int):
+    """Kategorije igrača (M2M)."""
+    rows = fetch("""
+        SELECT kategorija, sezona, klub_id, source, source_url, scraped_at
+        FROM pgz_sport.clan_kategorije WHERE clan_id = %s
+        ORDER BY sezona DESC, kategorija
+    """, (clan_id,))
+    return {"clan_id": clan_id, "kategorije": rows}
+
+
+@app.get("/api/v2/klubovi/priority-sort")
+def klubovi_priority_sort(sport: str = None, limit: int = 500):
+    """Klubovi sortirani: priority (financirani || godišnjak) prvi."""
+    where = ""
+    params = []
+    if sport:
+        where = " WHERE sport = %s"
+        params.append(sport)
+    rows = fetch(f"""
+        SELECT k.*, k.priority_label,
+               (SELECT count(*) FROM pgz_sport.clanovi WHERE klub_id = k.id) AS sportasa,
+               (SELECT count(*) FROM pgz_sport.hns_klub_roster WHERE klub_id = k.id) AS hns_roster,
+               (SELECT sum(iznos) FROM pgz_sport.potpore_nositelji WHERE klub_id = k.id OR naziv_kluba ILIKE k.naziv) AS potpora_ukupno
+        FROM pgz_sport.v_klubovi_priority_sort k
+        {where}
+        ORDER BY priority, potpora_ukupno DESC NULLS LAST, naziv
+        LIMIT %s
+    """, tuple(params) + (limit,))
+    return {"count": len(rows), "rows": rows}
+
+
+@app.get("/api/v2/clan/{clan_id}/full")
+def clan_full(clan_id: int):
+    """Punu sliku igrača: profil + kategorije + sezone + utakmice + potpore."""
+    profile = fetch("SELECT * FROM pgz_sport.clanovi WHERE id = %s", (clan_id,))
+    if not profile: return {"error": "not_found"}
+    p = profile[0]
+    
+    kategorije = fetch("SELECT * FROM pgz_sport.clan_kategorije WHERE clan_id = %s ORDER BY sezona DESC", (clan_id,))
+    seasons = fetch("SELECT * FROM pgz_sport.hns_player_seasons WHERE clan_id = %s ORDER BY sezona DESC", (clan_id,))
+    matches = fetch("SELECT * FROM pgz_sport.hns_player_matches WHERE clan_id = %s ORDER BY datum DESC NULLS LAST LIMIT 30", (clan_id,))
+    multi_stats = fetch("SELECT * FROM pgz_sport.player_stats WHERE clan_id = %s ORDER BY sezona DESC", (clan_id,))
+    
+    return {
+        "profile": p,
+        "kategorije": kategorije,
+        "hns_seasons": seasons,
+        "hns_matches": matches,
+        "multi_sport_stats": multi_stats,
+        "stats": {
+            "total_seasons": len(seasons),
+            "total_matches": len(matches),
+            "total_kategorije": len(kategorije),
+        }
+    }
+
+
+@app.post("/api/v2/export/klubovi")
+def export_klubovi(req: dict):
+    """Export klubova kao XLSX."""
+    import io
+    try:
+        from openpyxl import Workbook
+    except ImportError:
+        return {"error": "openpyxl not installed"}
+    
+    ids = req.get("ids", [])
+    if not ids:
+        return {"error": "no ids"}
+    
+    rows = fetch("""
+        SELECT k.id, k.naziv, k.sport, k.razina, k.oib, k.grad,
+               k.financiran, k.u_godisnjaku, k.priority_label,
+               (SELECT count(*) FROM pgz_sport.clanovi WHERE klub_id = k.id) AS sportasa,
+               (SELECT sum(iznos) FROM pgz_sport.potpore_nositelji WHERE klub_id = k.id OR naziv_kluba ILIKE k.naziv) AS potpora
+        FROM pgz_sport.v_klubovi_priority_sort k
+        WHERE k.id = ANY(%s)
+        ORDER BY k.priority, k.naziv
+    """, (ids,))
+    
+    wb = Workbook()
+    ws = wb.active
+    ws.title = "Klubovi"
+    
+    if rows:
+        headers = list(rows[0].keys())
+        ws.append([h.replace('_',' ').title() for h in headers])
+        for r in rows:
+            ws.append([r.get(h) for h in headers])
+    
+    buf = io.BytesIO()
+    wb.save(buf)
+    buf.seek(0)
+    
+    from fastapi.responses import StreamingResponse
+    return StreamingResponse(
+        buf,
+        media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+        headers={"Content-Disposition": f"attachment; filename=klubovi_export_{int(time.time())}.xlsx"}
+    )
+
+
 @app.get("/")
 def root(request: Request):
     host = request.headers.get("host", "")