docs: SSH debugging guide pentru prod Windows — ce merge, ce nu merge

Adaugat in sectiunea 'Depanare SSH' din README:
- Comanda corecta ssh cu -i ~/.ssh/id_ed25519
- Deploy pachet Oracle via sqlplus @fisier.pck
- Restart FastAPI cand nssm e indisponibil (kill python + start.ps1)
- Tabel explicit cu ce NU merge (nssm/sc/WMI/pipe/curl -m/here-doc)
  si alternativele corecte
- Metoda scriere SQL ad-hoc: fisier local -> scp -> @fisier.sql

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -412,10 +412,10 @@ Loguri aplicatie: `logs/sync_comenzi_*.log`
 
 ```bash
 # Conectare SSH (PowerShell remote, cheie publica)
-ssh -p 22122 gomag@79.119.86.134
+ssh -i ~/.ssh/id_ed25519 -p 22122 -o StrictHostKeyChecking=no gomag@79.119.86.134
 
 # Verificare .env
-cmd /c type C:\gomag-vending\api\.env
+powershell -Command "Get-Content C:\gomag-vending\api\.env | Select-String 'ORACLE_'"
 
 # Test conexiune Oracle
 C:\gomag-vending\venv\Scripts\python.exe -c "import oracledb, os; os.environ['TNS_ADMIN']='C:/roa/instantclient_11_2_0_2'; conn=oracledb.connect(user='VENDING', password='ROMFASTSOFT', dsn='ROA'); print('Connected!'); conn.close()"
@@ -423,20 +423,80 @@ C:\gomag-vending\venv\Scripts\python.exe -c "import oracledb, os; os.environ['TN
 # Verificare tnsnames.ora
 cmd /c type C:\roa\instantclient_11_2_0_2\tnsnames.ora
 
-# Verificare procese Python
+# Verificare procese Python (ID-uri pentru kill/restart)
-Get-Process *python* | Select-Object Id,ProcessName,Path
+powershell -Command "Get-Process python -ErrorAction SilentlyContinue | Format-Table Id, CPU -AutoSize"
 
 # Verificare loguri recente
 Get-ChildItem C:\gomag-vending\logs\*.log | Sort-Object LastWriteTime -Descending | Select-Object -First 3
 
-# Test sync manual (verifica ca Oracle pool porneste)
+# Test app (prin nginx reverse proxy)
-curl http://localhost:5003/health
+powershell -Command "Invoke-WebRequest -Uri 'http://localhost/gomag/' -UseBasicParsing | Select-Object StatusCode"
-curl -X POST http://localhost:5003/api/sync/start
 
-# Refresh facturi manual
+# Retry comanda din linie de comanda
-curl -X POST http://localhost:5003/api/dashboard/refresh-invoices
+powershell -Command "Invoke-WebRequest -Uri 'http://localhost/gomag/api/orders/NRCOMANDA/retry' -Method POST -UseBasicParsing | Select-Object -ExpandProperty Content"
 ```
 
+#### Deploy pachet Oracle PL/SQL via SSH
+
+```bash
+# Metoda corecta: sqlplus cu fisier .pck (contine ambele: PACKAGE + PACKAGE BODY)
+ssh -i ~/.ssh/id_ed25519 -p 22122 gomag@79.119.86.134 \
+  "powershell -Command \"echo exit | sqlplus -S VENDING/PAROLA@ROA '@C:\\gomag-vending\\api\\database-scripts\\05_pack_import_parteneri.pck'\""
+# Output asteptat: "Package created." + "Package body created."
+```
+
+#### Restart serviciu FastAPI via SSH
+
+Userul `gomag` nu are acces la `nssm` sau `sc` (necesita Administrator).
+Metoda disponibila — kill python + relanseaza start.ps1:
+
+```bash
+# 1. Gaseste PID-urile Python
+ssh -i ~/.ssh/id_ed25519 -p 22122 gomag@79.119.86.134 \
+  "powershell -Command \"Get-Process python -ErrorAction SilentlyContinue | Format-Table Id, CPU -AutoSize\""
+
+# 2. Kill + restart (inlocuieste PID1,PID2 cu valorile reale)
+ssh -i ~/.ssh/id_ed25519 -p 22122 gomag@79.119.86.134 \
+  "powershell -Command \"Stop-Process -Id PID1,PID2 -Force -ErrorAction SilentlyContinue; Start-Sleep 2; cd C:\\gomag-vending; Start-Process powershell -ArgumentList '-NoExit','-File','start.ps1' -WindowStyle Hidden\""
+
+# 3. Verifica ca a pornit (asteapta ~5s)
+ssh -i ~/.ssh/id_ed25519 -p 22122 gomag@79.119.86.134 \
+  "powershell -Command \"Invoke-WebRequest -Uri 'http://localhost/gomag/' -UseBasicParsing | Select-Object StatusCode\""
+```
+
+#### Ce NU merge via SSH (userul gomag fara Administrator)
+
+| Comanda | Eroare | Alternativa |
+|---------|--------|-------------|
+| `nssm restart GoMagVending` | `Error opening service manager!` | Kill python + Start-Process start.ps1 (vezi mai sus) |
+| `sc query` / `sc stop` | `Access is denied` | Nu exista alternativa — necesita acces direct la server |
+| `Get-WmiObject Win32_Process` | `Access denied` | `Get-Process` simplu fara CommandLine |
+| Pipe `\|` in -Command cu ghilimele nested | `An empty pipe element is not allowed` | Scrie SQL in fisier temporar, copiaza cu scp, ruleaza `@fisier.sql` |
+| `&&` (bash syntax) in PowerShell | `The term '&&' is not recognized` | Foloseste `;` (continua indiferent) sau `-Command "cmd1; cmd2"` |
+| `-m` flag la `curl` in PowerShell | `Ambiguous parameter name` | Foloseste `Invoke-WebRequest` in loc de curl |
+| Here-doc `<< 'EOF'` in PowerShell | `Missing file specification` | Scrie fisierul local, copiaza cu scp |
+
+#### Rulare SQL ad-hoc prin SSH (fara interactiv)
+
+PowerShell nu suporta pipe catre sqlplus cu ghilimele complexe. Metoda corecta:
+
+```bash
+# 1. Scrie SQL local
+cat > /tmp/query.sql << 'EOF'
+SELECT coloana FROM tabel WHERE conditie;
+exit
+EOF
+
+# 2. Copiaza pe prod
+scp -i ~/.ssh/id_ed25519 -P 22122 /tmp/query.sql "gomag@79.119.86.134:C:/gomag-vending/query.sql"
+
+# 3. Ruleaza
+ssh -i ~/.ssh/id_ed25519 -p 22122 gomag@79.119.86.134 \
+  "powershell -Command \"sqlplus -S VENDING/PAROLA@ROA '@C:\\gomag-vending\\query.sql'\""
+```
+
+**Nu folosi** `echo 'SQL;' | sqlplus` — PowerShell trateaza `|` diferit si poate esua cu "empty pipe element".
+
 ### Probleme frecvente
 
 | Eroare | Cauza | Solutie |