feat(pricing): kit/pachet pricing with price list lookup, replace procent_pret

- Oracle PL/SQL: kit pricing logic with Mode A (distributed discount) and
  Mode B (separate discount line), dual policy support, PRETURI_CU_TVA flag
- Eliminate procent_pret from entire stack (Oracle, Python, JS, HTML)
- New settings: kit_pricing_mode, kit_discount_codmat, price_sync_enabled
- Settings UI: cards for Kit Pricing and Price Sync configuration
- Mappings UI: kit badges with lazy-loaded component prices from price list
- Price sync from orders: auto-update ROA prices when web prices differ
- Catalog price sync: new service to sync all GoMag product prices to ROA
- Kit component price validation: pre-check prices before import
- New endpoint GET /api/mappings/{sku}/prices for component price display
- New endpoints POST /api/price-sync/start, GET status, GET history
- DDL script 07_drop_procent_pret.sql (run after deploy confirmation)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/app/services/sqlite_service.py

@@ -4,6 +4,9 @@ from datetime import datetime
 from zoneinfo import ZoneInfo
 from ..database import get_sqlite, get_sqlite_sync
 
+# Re-export so other services can import get_sqlite from sqlite_service
+__all__ = ["get_sqlite", "get_sqlite_sync"]
+
 _tz_bucharest = ZoneInfo("Europe/Bucharest")
 
 
@@ -927,3 +930,22 @@ async def set_app_setting(key: str, value: str):
         await db.commit()
     finally:
         await db.close()
+
+
+# ── Price Sync Runs ───────────────────────────────
+
+async def get_price_sync_runs(page: int = 1, per_page: int = 20):
+    """Get paginated price sync run history."""
+    db = await get_sqlite()
+    try:
+        offset = (page - 1) * per_page
+        cursor = await db.execute("SELECT COUNT(*) FROM price_sync_runs")
+        total = (await cursor.fetchone())[0]
+        cursor = await db.execute(
+            "SELECT * FROM price_sync_runs ORDER BY started_at DESC LIMIT ? OFFSET ?",
+            (per_page, offset)
+        )
+        runs = [dict(r) for r in await cursor.fetchall()]
+        return {"runs": runs, "total": total, "page": page, "pages": (total + per_page - 1) // per_page}
+    finally:
+        await db.close()