feat: multi-Oracle server support with runtime switching

Complete implementation of multi-server Oracle database support:

Backend:
- Multi-pool Oracle with lazy loading per server
- Email-to-server cache for automatic server discovery
- JWT tokens include server_id claim
- /auth/check-identity and /auth/check-email endpoints
- /auth/my-servers endpoint for listing user's accessible servers
- Server switch with password re-authentication

Frontend:
- New ServerSelector component for header dropdown
- Multi-step login flow (identity → server → password)
- Server switching from header with password modal
- Mobile drawer menu with server selection
- Dark mode support for all new components
- URL bookmark support with ?server= query param

Scripts:
- Unified start.sh replacing start-prod.sh/start-test.sh
- Unified ssh-tunnel.sh with multi-server support
- Updated status.sh for new architecture

Tests:
- E2E tests for multi-server and single-server login flows
- Backend unit tests for all new endpoints
- Oracle multi-pool integration tests

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/modules/reports/routers/treasury.py

@@ -1,4 +1,4 @@
-from fastapi import APIRouter, Depends, HTTPException, Query
+from fastapi import APIRouter, Depends, HTTPException, Query, Request
 from typing import Optional, List
 from datetime import date
 # import sys  # Removed - no longer needed
@@ -13,6 +13,7 @@ router = APIRouter()
 
 @router.get("/bank-cash-register", response_model=RegisterListResponse)
 async def get_bank_cash_register(
+    request: Request,
     company: str = Query(description="Codul firmei"),
     register_type: Optional[str] = Query(None, description="Tipul registrului: BANCA_LEI, BANCA_VALUTA, CASA_LEI, CASA_VALUTA sau None pentru toate"),
     luna: Optional[int] = Query(None, ge=1, le=12, description="Luna contabilă (1-12)"),
@@ -37,6 +38,8 @@ async def get_bank_cash_register(
         if company not in current_user.companies:
             raise HTTPException(status_code=403, detail=f"Nu aveți acces la firma {company}")
 
+        server_id = getattr(request.state, 'server_id', None)
+
         # Validează register_type dacă e specificat
         valid_types = ['BANCA_LEI', 'BANCA_VALUTA', 'CASA_LEI', 'CASA_VALUTA']
         if register_type and register_type not in valid_types:
@@ -74,7 +77,7 @@ async def get_bank_cash_register(
             page_size=page_size
         )
 
-        result = await TreasuryService.get_bank_cash_register(filter_params, current_user.username)
+        result = await TreasuryService.get_bank_cash_register(filter_params, current_user.username, server_id=server_id)
         return result
 
     except ValueError as e:
@@ -85,6 +88,7 @@ async def get_bank_cash_register(
 
 @router.get("/bank-cash-accounts", response_model=List[str])
 async def get_bank_cash_accounts(
+    request: Request,
     company: str = Query(description="Codul firmei"),
     register_type: str = Query(description="Tipul registrului: BANCA_LEI, BANCA_VALUTA, CASA_LEI, CASA_VALUTA"),
     current_user: CurrentUser = Depends(get_current_user)
@@ -100,6 +104,8 @@ async def get_bank_cash_accounts(
         if company not in current_user.companies:
             raise HTTPException(status_code=403, detail=f"Nu aveți acces la firma {company}")
 
+        server_id = getattr(request.state, 'server_id', None)
+
         # Validează register_type
         valid_types = ['BANCA_LEI', 'BANCA_VALUTA', 'CASA_LEI', 'CASA_VALUTA']
         if register_type not in valid_types:
@@ -108,7 +114,7 @@ async def get_bank_cash_accounts(
                 detail=f"Tip registru invalid. Valori acceptate: {', '.join(valid_types)}"
             )
 
-        result = await TreasuryService.get_bank_cash_accounts(int(company), register_type)
+        result = await TreasuryService.get_bank_cash_accounts(int(company), register_type, server_id=server_id)
         return result
 
     except ValueError as e: