Add admin-frontend and user-frontend standalone projects, certification/invoice/discovery features, fix auth header and theme consistency

backend/app/api/v1/admin.py

@@ -6,6 +6,8 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from app.database import get_db
 from app.services.admin import AdminService
 from app.services.translation_quota import TranslationQuotaService
+from app.services.certification import CertificationService
+from app.services.invoice import InvoiceService
 from app.api.v1.deps import get_current_user
 
 router = APIRouter()
@@ -212,3 +214,63 @@ async def reset_translation_quota(
     if not result:
         raise HTTPException(status_code=404, detail="Quota not found")
     return result
+
+
+@router.get("/certifications")
+async def admin_list_certifications(
+    page: int = Query(1, ge=1),
+    size: int = Query(20, ge=1, le=100),
+    status: Optional[str] = Query(None),
+    _: dict = Depends(require_admin),
+    db: AsyncSession = Depends(get_db),
+):
+    service = CertificationService(db)
+    return await service.list_all(page, size, status)
+
+
+@router.post("/certifications/{cert_id}/review")
+async def admin_review_certification(
+    cert_id: str,
+    data: dict,
+    _: dict = Depends(require_admin),
+    db: AsyncSession = Depends(get_db),
+):
+    _validate_uuid(cert_id)
+    service = CertificationService(db)
+    action = data.get("action")
+    if action not in ("approve", "reject"):
+        raise HTTPException(status_code=400, detail="Action must be 'approve' or 'reject'")
+    result = await service.review(cert_id, action, data.get("reason"))
+    if not result:
+        raise HTTPException(status_code=404, detail="Certification not found")
+    return result
+
+
+@router.get("/invoices")
+async def admin_list_invoices(
+    page: int = Query(1, ge=1),
+    size: int = Query(20, ge=1, le=100),
+    status: Optional[str] = Query(None),
+    _: dict = Depends(require_admin),
+    db: AsyncSession = Depends(get_db),
+):
+    service = InvoiceService(db)
+    return await service.list_all(page, size, status)
+
+
+@router.post("/invoices/{invoice_id}/process")
+async def admin_process_invoice(
+    invoice_id: str,
+    data: dict,
+    _: dict = Depends(require_admin),
+    db: AsyncSession = Depends(get_db),
+):
+    _validate_uuid(invoice_id)
+    service = InvoiceService(db)
+    action = data.get("action")
+    if action not in ("issue", "reject"):
+        raise HTTPException(status_code=400, detail="Action must be 'issue' or 'reject'")
+    result = await service.process(invoice_id, action, data.get("reason"))
+    if not result:
+        raise HTTPException(status_code=404, detail="Invoice not found")
+    return result