# ETL-Pipeline Migration: CSV → KI Workflow → Frontend

## System-Architektur (Klargestellt)

### Aktueller Zustand (Nicht optimal)
```
┌─────────────────────────────────────────────────────┐
│                 Laravel Frontend                     │
│                                                      │
│  CSV Upload → Manual Processing                     │
│       ↓                                              │
│  public.companies (11 Felder)                       │
│       ↓                                              │
│  public.transactions (49 Felder, komplex)           │
│       - Core-Felder (14)                            │
│       - Enrichment-Felder (35)                      │
│                                                      │
└─────────────────────────────────────────────────────┘
```

**Probleme**:
- ❌ Companies und Transactions vermischt
- ❌ Enrichment-Logik direkt in Laravel
- ❌ Keine klare Trennung: Raw Data vs Processed Data
- ❌ Skalierbarkeit begrenzt

---

### Ziel-Zustand (Backend-Pipeline)
```
┌──────────────────────────────────────────────────────────────┐
│                      CSV Upload                               │
│                           ↓                                   │
│              backend.transactions (14 Felder)                 │
│              - corporate_entity                               │
│              - corporate_counterparty                         │
│              - tx_date, tx_amount, tx_currency               │
│              - raw_payload (Original-CSV)                     │
│              - status: 'pending'                              │
└─────────────────────────┬────────────────────────────────────┘
                          │
                          ↓
┌──────────────────────────────────────────────────────────────┐
│                    KI Workflow (Python/MCP)                  │
│                                                              │
│  Für jede Transaction:                                       │
│  1. Analyse: Risk Assessment                                │
│  2. Enrichment: External APIs                               │
│  3. Output: Strukturierte Ergebnisse                        │
│                                                              │
│  Nutzt: backend.prompt_templates                            │
│         backend.prompt_runs                                 │
└─────────────────────────┬────────────────────────────────────┘
                          │
                          ↓
┌──────────────────────────────────────────────────────────────┐
│           backend.transaction_outputs (5 Felder)             │
│                                                              │
│  - transaction_id (FK → backend.transactions.id)            │
│  - prompt_id (FK → backend.prompt_templates.id)             │
│  - output_key (z.B. 'risk_assessment', 'sanctions_check')  │
│  - content (JSON mit Ergebnissen)                           │
│  - run_id (Batch-Tracking)                                  │
│                                                              │
│  Beispiel-Outputs:                                          │
│  • 'risk_assessment' → {score: 85, level: 'high'}          │
│  • 'sanctions_check' → {found: true, matches: [...]}       │
│  • 'pep_check' → {is_pep: false}                           │
│  • 'company_info' → {name, sector, country}                │
└─────────────────────────┬────────────────────────────────────┘
                          │
                          ↓
┌──────────────────────────────────────────────────────────────┐
│                   Laravel Frontend                            │
│                                                              │
│  Liest von:                                                 │
│  - backend.transactions (Raw Data)                          │
│  - backend.transaction_outputs (Processed Results)          │
│                                                              │
│  Zeigt an:                                                  │
│  - Transaction Details                                      │
│  - Risk Score & Assessment                                  │
│  - Enrichment Results (Sanctions, PEP, etc.)               │
│  - Review Queue                                            │
└──────────────────────────────────────────────────────────────┘
```

---

## Mapping: Alt → Neu

### 1. Companies Table → ENTFÄLLT

**Warum?**
- Companies sind **keine separate Entität** mehr
- Firmeninformationen kommen aus:
  1. `backend.transactions.corporate_entity` (Name aus CSV)
  2. `backend.transaction_outputs` mit `output_key='company_info'` (KI-Enrichment)

**Migration**:
```sql
-- Bestehende Companies werden zu Transaction Outputs
INSERT INTO backend.transaction_outputs (
    transaction_id,
    prompt_id,
    output_key,
    content
)
SELECT
    bt.id as transaction_id,
    1 as prompt_id, -- Default prompt für Company Info
    'company_info' as output_key,
    jsonb_build_object(
        'name', c.name,
        'legal_name', c.legal_name,
        'ticker', c.ticker,
        'sector', c.sector,
        'country', c.country,
        'headquarters', c.headquarters,
        'kyc_risk_level', c.kyc_risk_level,
        'summary', c.summary
    ) as content
FROM public.companies c
JOIN public.transactions t ON t.company_id = c.id
JOIN backend.transactions bt ON bt.corporate_entity = c.name;
```

### 2. Transactions Table → transaction_outputs

**public.transactions (49 Felder)**:
```
Core-Felder (14):
- company_id, reference, amount, currency
- counterparty, executed_at, status
- risk_score, requires_review
→ Gespeichert in backend.transactions

Enrichment-Felder (35):
- registry_data, sanctions_data, pep_data, ...
→ Jedes wird zu einem Output in transaction_outputs
```

**Mapping-Strategie**:

| public.transactions Feld | Ziel | output_key |
|--------------------------|------|------------|
| amount, currency, counterparty | backend.transactions | - |
| risk_score, requires_review | transaction_outputs | 'risk_assessment' |
| registry_data | transaction_outputs | 'registry' |
| sanctions_data | transaction_outputs | 'sanctions' |
| pep_data | transaction_outputs | 'pep' |
| gleif_data | transaction_outputs | 'gleif' |
| ... | ... | ... |

---

## Phase 1: Backend Models & Relationships (Tag 1-2)

### 1.1 Database Config

**config/database.php**:
```php
'backend' => [
    'driver' => 'pgsql',
    'host' => env('DB_HOST', '127.0.0.1'),
    'port' => env('DB_PORT', '5432'),
    'database' => env('DB_DATABASE', 'forge'),
    'username' => env('DB_USERNAME', 'forge'),
    'password' => env('DB_PASSWORD', ''),
    'charset' => 'utf8',
    'prefix' => '',
    'search_path' => 'backend',
    'sslmode' => 'prefer',
],
```

### 1.2 Backend\Transaction Model

**app/Models/Backend/Transaction.php**:
```php
<?php

namespace App\Models\Backend;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;

class Transaction extends Model
{
    use HasFactory;

    protected $connection = 'backend';
    protected $table = 'transactions';

    public const UPDATED_AT = 'last_modified_at';

    public const STATUS_PENDING = 'pending';
    public const STATUS_PROCESSING = 'processing';
    public const STATUS_COMPLETED = 'completed';
    public const STATUS_FAILED = 'failed';

    protected $fillable = [
        'corporate_entity',
        'corporate_counterparty',
        'tx_date',
        'tx_amount',
        'tx_currency',
        'tx_purpose',
        'tx_country_outgoing',
        'tx_country_incoming',
        'source_file',
        'raw_payload',
        'status',
    ];

    protected $casts = [
        'tx_amount' => 'decimal:2',
        // tx_date ist noch text - später zu timestamp migrieren
    ];

    /**
     * KI-generierte Outputs für diese Transaktion
     */
    public function outputs(): HasMany
    {
        return $this->hasMany(TransactionOutput::class, 'transaction_id');
    }

    /**
     * Hole spezifischen Output-Typ
     */
    public function getOutput(string $key): ?array
    {
        return $this->outputs()
            ->where('output_key', $key)
            ->first()
            ?->content;
    }

    /**
     * Hole alle Outputs als Key-Value Array
     */
    public function getOutputsArray(): array
    {
        return $this->outputs()
            ->get()
            ->pluck('content', 'output_key')
            ->toArray();
    }

    /**
     * Company Info aus Outputs
     */
    public function getCompanyInfo(): ?array
    {
        return $this->getOutput('company_info');
    }

    /**
     * Risk Assessment aus Outputs
     */
    public function getRiskAssessment(): ?array
    {
        return $this->getOutput('risk_assessment');
    }

    /**
     * Helper: Hat diese Transaction einen bestimmten Output?
     */
    public function hasOutput(string $key): bool
    {
        return $this->outputs()->where('output_key', $key)->exists();
    }

    /**
     * Ist KI-Verarbeitung abgeschlossen?
     */
    public function isProcessed(): bool
    {
        return $this->status === self::STATUS_COMPLETED;
    }

    /**
     * Benötigt Review?
     */
    public function requiresReview(): bool
    {
        $risk = $this->getRiskAssessment();

        if (!$risk) {
            return true; // Keine Risk-Assessment → Review
        }

        return ($risk['score'] ?? 0) >= 70 || ($risk['requires_review'] ?? false);
    }
}
```

### 1.3 Backend\TransactionOutput Model

**app/Models/Backend/TransactionOutput.php**:
```php
<?php

namespace App\Models\Backend;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class TransactionOutput extends Model
{
    protected $connection = 'backend';
    protected $table = 'transaction_outputs';

    public $timestamps = false; // Diese Tabelle hat keine timestamps

    protected $fillable = [
        'transaction_id',
        'prompt_id',
        'output_key',
        'content',
        'run_id',
    ];

    protected $casts = [
        'content' => 'array', // Automatisch JSON encode/decode
    ];

    /**
     * Transaction zu der dieser Output gehört
     */
    public function transaction(): BelongsTo
    {
        return $this->belongsTo(Transaction::class, 'transaction_id');
    }

    /**
     * Prompt Template das diesen Output erzeugt hat
     */
    public function promptTemplate(): BelongsTo
    {
        return $this->belongsTo(PromptTemplate::class, 'prompt_id');
    }

    /**
     * Output-Key Konstanten für Type Safety
     */
    public const KEY_COMPANY_INFO = 'company_info';
    public const KEY_RISK_ASSESSMENT = 'risk_assessment';
    public const KEY_SANCTIONS = 'sanctions';
    public const KEY_PEP = 'pep';
    public const KEY_REGISTRY = 'registry';
    public const KEY_GLEIF = 'gleif';
    public const KEY_INSOLVENCY = 'insolvency';
    public const KEY_BUNDESANZEIGER = 'bundesanzeiger';
    public const KEY_RSS = 'rss';
    public const KEY_EU_SANCTIONS = 'eu_sanctions';
    public const KEY_HANDELSREGISTER = 'handelsregister';

    /**
     * Alle verfügbaren Output-Keys
     */
    public static function availableKeys(): array
    {
        return [
            self::KEY_COMPANY_INFO,
            self::KEY_RISK_ASSESSMENT,
            self::KEY_SANCTIONS,
            self::KEY_PEP,
            self::KEY_REGISTRY,
            self::KEY_GLEIF,
            self::KEY_INSOLVENCY,
            self::KEY_BUNDESANZEIGER,
            self::KEY_RSS,
            self::KEY_EU_SANCTIONS,
            self::KEY_HANDELSREGISTER,
        ];
    }
}
```

### 1.4 Backend\PromptTemplate Model (optional)

**app/Models/Backend/PromptTemplate.php**:
```php
<?php

namespace App\Models\Backend;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;

class PromptTemplate extends Model
{
    protected $connection = 'backend';
    protected $table = 'prompt_templates';

    protected $fillable = [
        'name',
        'template',
        'output_key',
        'active',
    ];

    public function outputs(): HasMany
    {
        return $this->hasMany(TransactionOutput::class, 'prompt_id');
    }
}
```

---

## Phase 2: CSV Upload Service (Tag 3-4)

### 2.1 CSV Upload Controller

**app/Http/Controllers/TransactionUploadController.php**:
```php
<?php

namespace App\Http\Controllers;

use App\Services\TransactionUploadService;
use Illuminate\Http\Request;

class TransactionUploadController extends Controller
{
    public function __construct(
        private TransactionUploadService $uploadService
    ) {}

    public function create()
    {
        return view('transactions.upload');
    }

    public function store(Request $request)
    {
        $validated = $request->validate([
            'csv_file' => 'required|file|mimes:csv,txt|max:10240', // 10MB
        ]);

        try {
            $result = $this->uploadService->process($validated['csv_file']);

            return redirect()
                ->route('transactions.index')
                ->with('success', "Imported {$result['count']} transactions. Processing started.");
        } catch (\Exception $e) {
            return back()
                ->withErrors(['csv_file' => $e->getMessage()])
                ->withInput();
        }
    }
}
```

### 2.2 Upload Service

**app/Services/TransactionUploadService.php**:
```php
<?php

namespace App\Services;

use App\Jobs\ProcessTransactionWithAI;
use App\Models\Backend\Transaction;
use Illuminate\Http\UploadedFile;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Storage;

class TransactionUploadService
{
    /**
     * Verarbeite CSV Upload
     */
    public function process(UploadedFile $file): array
    {
        // 1. Speichere Original-Datei
        $fileName = $this->storeFile($file);

        // 2. Parse CSV
        $rows = $this->parseCsv($file);

        // 3. Validiere Daten
        $this->validate($rows);

        // 4. Importiere zu backend.transactions
        $transactions = $this->import($rows, $fileName);

        // 5. Starte KI-Verarbeitung (async)
        $this->queueAiProcessing($transactions);

        return [
            'count' => count($transactions),
            'file' => $fileName,
        ];
    }

    /**
     * Speichere Original-CSV für Audit
     */
    private function storeFile(UploadedFile $file): string
    {
        return Storage::disk('local')->putFileAs(
            'uploads/transactions',
            $file,
            date('Y-m-d_His') . '_' . $file->getClientOriginalName()
        );
    }

    /**
     * Parse CSV-Datei
     */
    private function parseCsv(UploadedFile $file): array
    {
        $handle = fopen($file->getRealPath(), 'r');
        $headers = fgetcsv($handle); // Erste Zeile = Header

        $rows = [];
        while (($data = fgetcsv($handle)) !== false) {
            $rows[] = array_combine($headers, $data);
        }

        fclose($handle);

        return $rows;
    }

    /**
     * Validiere CSV-Daten
     */
    private function validate(array $rows): void
    {
        if (empty($rows)) {
            throw new \InvalidArgumentException('CSV file is empty');
        }

        $requiredColumns = [
            'corporate_entity',
            'corporate_counterparty',
            'tx_date',
            'tx_amount',
        ];

        $headers = array_keys($rows[0]);
        $missing = array_diff($requiredColumns, $headers);

        if (!empty($missing)) {
            throw new \InvalidArgumentException(
                'Missing required columns: ' . implode(', ', $missing)
            );
        }
    }

    /**
     * Importiere Transaktionen
     */
    private function import(array $rows, string $fileName): array
    {
        $transactions = [];

        DB::connection('backend')->transaction(function () use ($rows, $fileName, &$transactions) {
            foreach ($rows as $row) {
                $transactions[] = Transaction::create([
                    'corporate_entity' => $row['corporate_entity'],
                    'corporate_counterparty' => $row['corporate_counterparty'],
                    'tx_date' => $row['tx_date'],
                    'tx_amount' => (float) $row['tx_amount'],
                    'tx_currency' => $row['tx_currency'] ?? 'EUR',
                    'tx_purpose' => $row['tx_purpose'] ?? null,
                    'tx_country_outgoing' => $row['tx_country_outgoing'] ?? null,
                    'tx_country_incoming' => $row['tx_country_incoming'] ?? null,
                    'source_file' => $fileName,
                    'raw_payload' => json_encode($row),
                    'status' => Transaction::STATUS_PENDING,
                ]);
            }
        });

        return $transactions;
    }

    /**
     * Starte KI-Verarbeitung für alle Transaktionen
     */
    private function queueAiProcessing(array $transactions): void
    {
        foreach ($transactions as $transaction) {
            ProcessTransactionWithAI::dispatch($transaction);
        }
    }
}
```

---

## Phase 3: KI Workflow Integration (Tag 5-7)

### 3.1 AI Processing Job

**app/Jobs/ProcessTransactionWithAI.php**:
```php
<?php

namespace App\Jobs;

use App\Models\Backend\Transaction;
use App\Models\Backend\TransactionOutput;
use App\Services\AiWorkflowService;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;

class ProcessTransactionWithAI implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    public function __construct(
        private Transaction $transaction
    ) {}

    public function handle(AiWorkflowService $aiService): void
    {
        // Update Status
        $this->transaction->update(['status' => Transaction::STATUS_PROCESSING]);

        try {
            // 1. Company Info Enrichment
            $companyInfo = $aiService->enrichCompanyInfo($this->transaction);
            $this->storeOutput('company_info', $companyInfo);

            // 2. Risk Assessment
            $riskAssessment = $aiService->assessRisk($this->transaction);
            $this->storeOutput('risk_assessment', $riskAssessment);

            // 3. Sanctions Check
            $sanctionsCheck = $aiService->checkSanctions($this->transaction);
            $this->storeOutput('sanctions', $sanctionsCheck);

            // 4. PEP Check
            $pepCheck = $aiService->checkPep($this->transaction);
            $this->storeOutput('pep', $pepCheck);

            // 5. Weitere Checks (conditional)
            if ($riskAssessment['score'] >= 50) {
                $registryData = $aiService->checkRegistry($this->transaction);
                $this->storeOutput('registry', $registryData);
            }

            // Fertig
            $this->transaction->update(['status' => Transaction::STATUS_COMPLETED]);

        } catch (\Exception $e) {
            $this->transaction->update([
                'status' => Transaction::STATUS_FAILED,
            ]);

            // Store Error Output
            $this->storeOutput('error', [
                'message' => $e->getMessage(),
                'trace' => $e->getTraceAsString(),
            ]);

            throw $e;
        }
    }

    private function storeOutput(string $key, array $data): void
    {
        TransactionOutput::create([
            'transaction_id' => $this->transaction->id,
            'prompt_id' => 1, // TODO: Map zu echtem Prompt Template
            'output_key' => $key,
            'content' => $data,
            'run_id' => null, // TODO: Track Batch-Runs
        ]);
    }
}
```

### 3.2 AI Workflow Service (Stub)

**app/Services/AiWorkflowService.php**:
```php
<?php

namespace App\Services;

use App\Models\Backend\Transaction;

class AiWorkflowService
{
    /**
     * Enriche Company-Informationen
     */
    public function enrichCompanyInfo(Transaction $transaction): array
    {
        // TODO: Integration mit MCP/KI-Backend
        // Für jetzt: Dummy-Implementierung

        return [
            'name' => $transaction->corporate_entity,
            'legal_name' => null,
            'country' => $transaction->tx_country_outgoing,
            'sector' => 'Unknown',
            'kyc_risk_level' => 'medium',
            'enriched_at' => now()->toIso8601String(),
        ];
    }

    /**
     * Risk Assessment
     */
    public function assessRisk(Transaction $transaction): array
    {
        // TODO: Echte Risk-Logik via KI

        $amount = (float) $transaction->tx_amount;
        $score = 0;

        // Einfache Heuristik
        if ($amount > 100000) {
            $score += 30;
        }
        if ($transaction->tx_country_incoming !== 'DE') {
            $score += 20;
        }

        return [
            'score' => $score,
            'level' => $score >= 70 ? 'high' : ($score >= 40 ? 'medium' : 'low'),
            'requires_review' => $score >= 70,
            'factors' => [
                'high_amount' => $amount > 100000,
                'foreign_country' => $transaction->tx_country_incoming !== 'DE',
            ],
            'assessed_at' => now()->toIso8601String(),
        ];
    }

    /**
     * Sanctions Check
     */
    public function checkSanctions(Transaction $transaction): array
    {
        // TODO: API zu Sanktionslisten

        return [
            'checked' => true,
            'found' => false,
            'matches' => [],
            'sources' => ['EU', 'OFAC'],
            'checked_at' => now()->toIso8601String(),
        ];
    }

    /**
     * PEP Check
     */
    public function checkPep(Transaction $transaction): array
    {
        // TODO: PEP Database Check

        return [
            'is_pep' => false,
            'confidence' => 0.0,
            'matches' => [],
            'checked_at' => now()->toIso8601String(),
        ];
    }

    /**
     * Registry Check
     */
    public function checkRegistry(Transaction $transaction): array
    {
        // TODO: Handelsregister API

        return [
            'found' => false,
            'company_number' => null,
            'match_score' => 0.0,
            'data' => null,
            'checked_at' => now()->toIso8601String(),
        ];
    }
}
```

---

## Phase 4: Frontend Anpassung (Tag 8-10)

### 4.1 Transaction Repository

**app/Repositories/TransactionRepository.php**:
```php
<?php

namespace App\Repositories;

use App\Models\Backend\Transaction;
use Illuminate\Database\Eloquent\Collection;

class TransactionRepository
{
    /**
     * Alle Transaktionen mit Outputs
     */
    public function allWithOutputs(): Collection
    {
        return Transaction::with('outputs')
            ->orderBy('created_at', 'desc')
            ->get();
    }

    /**
     * Transaktionen die Review benötigen
     */
    public function requiresReview(): Collection
    {
        return Transaction::with('outputs')
            ->where('status', Transaction::STATUS_COMPLETED)
            ->get()
            ->filter(fn($t) => $t->requiresReview());
    }

    /**
     * High-Risk Transaktionen
     */
    public function highRisk(int $threshold = 70): Collection
    {
        return $this->allWithOutputs()
            ->filter(function ($transaction) use ($threshold) {
                $risk = $transaction->getRiskAssessment();
                return ($risk['score'] ?? 0) >= $threshold;
            });
    }

    /**
     * Transaktionen nach Firma
     */
    public function byCompany(string $companyName): Collection
    {
        return Transaction::with('outputs')
            ->where('corporate_entity', $companyName)
            ->orderBy('tx_date', 'desc')
            ->get();
    }

    /**
     * Statistiken
     */
    public function stats(): array
    {
        $total = Transaction::count();
        $pending = Transaction::where('status', Transaction::STATUS_PENDING)->count();
        $processing = Transaction::where('status', Transaction::STATUS_PROCESSING)->count();
        $completed = Transaction::where('status', Transaction::STATUS_COMPLETED)->count();
        $failed = Transaction::where('status', Transaction::STATUS_FAILED)->count();

        return compact('total', 'pending', 'processing', 'completed', 'failed');
    }
}
```

### 4.2 Transaction Controller

**app/Http/Controllers/TransactionController.php**:
```php
<?php

namespace App\Http\Controllers;

use App\Repositories\TransactionRepository;

class TransactionController extends Controller
{
    public function __construct(
        private TransactionRepository $transactions
    ) {}

    public function index()
    {
        $transactions = $this->transactions->allWithOutputs();
        $stats = $this->transactions->stats();

        return view('transactions.index', compact('transactions', 'stats'));
    }

    public function show(int $id)
    {
        $transaction = $this->transactions->find($id);

        if (!$transaction) {
            abort(404);
        }

        return view('transactions.show', compact('transaction'));
    }

    public function review()
    {
        $transactions = $this->transactions->requiresReview();

        return view('transactions.review', compact('transactions'));
    }
}
```

### 4.3 Volt Component für Transaction List

**resources/views/pages/transactions/index.blade.php**:
```php
<?php

use App\Repositories\TransactionRepository;
use function Livewire\Volt\{state, computed};

$transactionRepo = app(TransactionRepository::class);

$transactions = computed(fn() => $transactionRepo->allWithOutputs());
$stats = computed(fn() => $transactionRepo->stats());

?>

<div>
    <flux:heading size="lg">Transactions</flux:heading>

    {{-- Stats Cards --}}
    <div class="grid grid-cols-4 gap-4 mt-6">
        <flux:card>
            <div class="text-sm text-gray-600">Total</div>
            <div class="text-2xl font-bold">{{ $this->stats['total'] }}</div>
        </flux:card>

        <flux:card>
            <div class="text-sm text-gray-600">Pending</div>
            <div class="text-2xl font-bold text-yellow-600">{{ $this->stats['pending'] }}</div>
        </flux:card>

        <flux:card>
            <div class="text-sm text-gray-600">Processing</div>
            <div class="text-2xl font-bold text-blue-600">{{ $this->stats['processing'] }}</div>
        </flux:card>

        <flux:card>
            <div class="text-sm text-gray-600">Completed</div>
            <div class="text-2xl font-bold text-green-600">{{ $this->stats['completed'] }}</div>
        </flux:card>
    </div>

    {{-- Transaction List --}}
    <flux:card class="mt-6">
        <flux:table>
            <flux:thead>
                <flux:tr>
                    <flux:th>Date</flux:th>
                    <flux:th>Company</flux:th>
                    <flux:th>Counterparty</flux:th>
                    <flux:th>Amount</flux:th>
                    <flux:th>Risk Score</flux:th>
                    <flux:th>Status</flux:th>
                    <flux:th>Actions</flux:th>
                </flux:tr>
            </flux:thead>
            <flux:tbody>
                @foreach($this->transactions as $transaction)
                    @php
                        $risk = $transaction->getRiskAssessment();
                        $riskScore = $risk['score'] ?? 0;
                        $riskColor = $riskScore >= 70 ? 'red' : ($riskScore >= 40 ? 'yellow' : 'green');
                    @endphp
                    <flux:tr>
                        <flux:td>{{ $transaction->tx_date }}</flux:td>
                        <flux:td>{{ $transaction->corporate_entity }}</flux:td>
                        <flux:td>{{ $transaction->corporate_counterparty }}</flux:td>
                        <flux:td>{{ number_format($transaction->tx_amount, 2) }} {{ $transaction->tx_currency }}</flux:td>
                        <flux:td>
                            <flux:badge :color="$riskColor">
                                {{ $riskScore }}
                            </flux:badge>
                        </flux:td>
                        <flux:td>
                            <flux:badge :variant="$transaction->isProcessed() ? 'success' : 'warning'">
                                {{ $transaction->status }}
                            </flux:badge>
                        </flux:td>
                        <flux:td>
                            <flux:button size="sm" href="{{ route('transactions.show', $transaction) }}">
                                View
                            </flux:button>
                        </flux:td>
                    </flux:tr>
                @endforeach
            </flux:tbody>
        </flux:table>
    </flux:card>
</div>
```

### 4.4 Transaction Detail View

**resources/views/pages/transactions/show.blade.php**:
```php
<?php

use App\Models\Backend\Transaction;

$transaction = Transaction::with('outputs')->findOrFail($id);
$companyInfo = $transaction->getCompanyInfo();
$riskAssessment = $transaction->getRiskAssessment();
$sanctionsCheck = $transaction->getOutput('sanctions');
$pepCheck = $transaction->getOutput('pep');

?>

<div>
    <flux:heading size="lg">Transaction Details</flux:heading>

    {{-- Transaction Info --}}
    <flux:card class="mt-6">
        <flux:heading size="md">Transaction Information</flux:heading>

        <dl class="grid grid-cols-2 gap-4 mt-4">
            <div>
                <dt class="text-sm text-gray-600">Company</dt>
                <dd class="font-medium">{{ $transaction->corporate_entity }}</dd>
            </div>
            <div>
                <dt class="text-sm text-gray-600">Counterparty</dt>
                <dd class="font-medium">{{ $transaction->corporate_counterparty }}</dd>
            </div>
            <div>
                <dt class="text-sm text-gray-600">Amount</dt>
                <dd class="font-medium">{{ number_format($transaction->tx_amount, 2) }} {{ $transaction->tx_currency }}</dd>
            </div>
            <div>
                <dt class="text-sm text-gray-600">Date</dt>
                <dd class="font-medium">{{ $transaction->tx_date }}</dd>
            </div>
            <div>
                <dt class="text-sm text-gray-600">Status</dt>
                <dd>
                    <flux:badge :variant="$transaction->isProcessed() ? 'success' : 'warning'">
                        {{ $transaction->status }}
                    </flux:badge>
                </dd>
            </div>
        </dl>
    </flux:card>

    {{-- Company Info --}}
    @if($companyInfo)
        <flux:card class="mt-6">
            <flux:heading size="md">Company Information</flux:heading>

            <dl class="grid grid-cols-2 gap-4 mt-4">
                <div>
                    <dt class="text-sm text-gray-600">Name</dt>
                    <dd class="font-medium">{{ $companyInfo['name'] }}</dd>
                </div>
                <div>
                    <dt class="text-sm text-gray-600">Country</dt>
                    <dd class="font-medium">{{ $companyInfo['country'] }}</dd>
                </div>
                <div>
                    <dt class="text-sm text-gray-600">Sector</dt>
                    <dd class="font-medium">{{ $companyInfo['sector'] ?? 'Unknown' }}</dd>
                </div>
                <div>
                    <dt class="text-sm text-gray-600">KYC Risk Level</dt>
                    <dd>
                        <flux:badge>{{ $companyInfo['kyc_risk_level'] ?? 'medium' }}</flux:badge>
                    </dd>
                </div>
            </dl>
        </flux:card>
    @endif

    {{-- Risk Assessment --}}
    @if($riskAssessment)
        <flux:card class="mt-6">
            <flux:heading size="md">Risk Assessment</flux:heading>

            <div class="mt-4">
                <div class="flex items-center justify-between">
                    <span class="text-sm text-gray-600">Risk Score</span>
                    <flux:badge :color="$riskAssessment['score'] >= 70 ? 'red' : ($riskAssessment['score'] >= 40 ? 'yellow' : 'green')">
                        {{ $riskAssessment['score'] }} / 100
                    </flux:badge>
                </div>
                <div class="mt-2">
                    <div class="text-sm text-gray-600">Risk Level</div>
                    <div class="font-medium">{{ ucfirst($riskAssessment['level']) }}</div>
                </div>
                <div class="mt-2">
                    <div class="text-sm text-gray-600">Requires Review</div>
                    <div class="font-medium">{{ $riskAssessment['requires_review'] ? 'Yes' : 'No' }}</div>
                </div>
            </div>
        </flux:card>
    @endif

    {{-- Sanctions Check --}}
    @if($sanctionsCheck)
        <flux:card class="mt-6">
            <flux:heading size="md">Sanctions Check</flux:heading>

            <div class="mt-4">
                <flux:badge :color="$sanctionsCheck['found'] ? 'red' : 'green'">
                    {{ $sanctionsCheck['found'] ? 'Matches Found' : 'Clear' }}
                </flux:badge>
            </div>
        </flux:card>
    @endif

    {{-- All Outputs (Debug) --}}
    <flux:card class="mt-6">
        <flux:heading size="md">All AI Outputs</flux:heading>

        <div class="mt-4 space-y-2">
            @foreach($transaction->outputs as $output)
                <details class="border rounded p-2">
                    <summary class="cursor-pointer font-medium">{{ $output->output_key }}</summary>
                    <pre class="mt-2 text-xs bg-gray-50 p-2 rounded overflow-auto">{{ json_encode($output->content, JSON_PRETTY_PRINT) }}</pre>
                </details>
            @endforeach
        </div>
    </flux:card>
</div>
```

---

## Phase 5: Datenmigration (Tag 11-15)

### 5.1 Migration: public.companies → transaction_outputs

**database/migrations/2025_11_12_migrate_companies_to_outputs.php**:
```php
<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Support\Facades\DB;

return new class extends Migration
{
    public function up(): void
    {
        DB::statement("
            INSERT INTO backend.transaction_outputs (
                transaction_id,
                prompt_id,
                output_key,
                content
            )
            SELECT DISTINCT ON (t.id)
                t.id as transaction_id,
                1 as prompt_id,
                'company_info' as output_key,
                jsonb_build_object(
                    'name', c.name,
                    'legal_name', c.legal_name,
                    'ticker', c.ticker,
                    'sector', c.sector,
                    'country', c.country,
                    'headquarters', c.headquarters,
                    'kyc_risk_level', c.kyc_risk_level,
                    'summary', c.summary
                ) as content
            FROM public.companies c
            CROSS JOIN LATERAL (
                SELECT id
                FROM backend.transactions bt
                WHERE bt.corporate_entity = c.name
                LIMIT 1
            ) t
            WHERE NOT EXISTS (
                SELECT 1 FROM backend.transaction_outputs o
                WHERE o.transaction_id = t.id
                AND o.output_key = 'company_info'
            )
        ");
    }

    public function down(): void
    {
        DB::statement("
            DELETE FROM backend.transaction_outputs
            WHERE output_key = 'company_info'
        ");
    }
};
```

### 5.2 Migration: public.transactions → backend.transactions + outputs

**database/migrations/2025_11_12_migrate_transactions_to_backend.php**:
```php
<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Support\Facades\DB;

return new class extends Migration
{
    public function up(): void
    {
        // 1. Core Transaction Data
        DB::statement("
            INSERT INTO backend.transactions (
                corporate_entity,
                corporate_counterparty,
                tx_date,
                tx_amount,
                tx_currency,
                tx_purpose,
                tx_country_incoming,
                status,
                created_at,
                last_modified_at
            )
            SELECT
                c.name as corporate_entity,
                t.counterparty as corporate_counterparty,
                t.executed_at::text as tx_date,
                t.amount as tx_amount,
                t.currency as tx_currency,
                t.flagged_reason as tx_purpose,
                t.counterparty_country as tx_country_incoming,
                'completed' as status,
                t.created_at::text,
                t.updated_at::text
            FROM public.transactions t
            JOIN public.companies c ON t.company_id = c.id
            WHERE NOT EXISTS (
                SELECT 1 FROM backend.transactions bt
                WHERE bt.corporate_entity = c.name
                AND bt.tx_date = t.executed_at::text
                AND bt.tx_amount = t.amount
            )
        ");

        // 2. Risk Assessment Output
        DB::statement("
            INSERT INTO backend.transaction_outputs (
                transaction_id,
                prompt_id,
                output_key,
                content
            )
            SELECT
                bt.id,
                1,
                'risk_assessment',
                jsonb_build_object(
                    'score', t.risk_score,
                    'level', CASE
                        WHEN t.risk_score >= 70 THEN 'high'
                        WHEN t.risk_score >= 40 THEN 'medium'
                        ELSE 'low'
                    END,
                    'requires_review', t.requires_review,
                    'flagged_by', t.flagged_by,
                    'flagged_reason', t.flagged_reason,
                    'signals', t.signals
                )
            FROM public.transactions t
            JOIN public.companies c ON t.company_id = c.id
            JOIN backend.transactions bt ON (
                bt.corporate_entity = c.name
                AND bt.tx_date = t.executed_at::text
                AND bt.tx_amount = t.amount
            )
        ");

        // 3. Enrichment Outputs (Loop through all sources)
        $sources = [
            'registry' => ['registry_data', 'registry_last_refreshed_at'],
            'sanctions' => ['sanctions_data', 'sanctions_last_refreshed_at'],
            'pep' => ['pep_data', 'pep_last_refreshed_at'],
            'gleif' => ['gleif_data', 'gleif_last_refreshed_at'],
            // ... weitere
        ];

        foreach ($sources as $key => [$dataCol, $refreshCol]) {
            DB::statement("
                INSERT INTO backend.transaction_outputs (
                    transaction_id,
                    prompt_id,
                    output_key,
                    content
                )
                SELECT
                    bt.id,
                    1,
                    '{$key}',
                    t.{$dataCol}
                FROM public.transactions t
                JOIN public.companies c ON t.company_id = c.id
                JOIN backend.transactions bt ON (
                    bt.corporate_entity = c.name
                    AND bt.tx_date = t.executed_at::text
                    AND bt.tx_amount = t.amount
                )
                WHERE t.{$dataCol} IS NOT NULL
            ");
        }
    }

    public function down(): void
    {
        // Rollback: Lösche migrierte Daten
        DB::statement("
            DELETE FROM backend.transactions
            WHERE status = 'completed'
            AND EXISTS (
                SELECT 1 FROM backend.transaction_outputs
                WHERE transaction_id = backend.transactions.id
            )
        ");
    }
};
```

---

## Phase 6: Testing & Rollout

### 6.1 Feature Flag basierter Rollout

**.env**:
```env
# Phase 1: Backend verfügbar, aber inaktiv
FEATURE_USE_BACKEND_TRANSACTIONS=false

# Phase 2: Neue Uploads gehen zu Backend
FEATURE_BACKEND_CSV_UPLOAD=true

# Phase 3: Frontend liest von Backend
FEATURE_USE_BACKEND_TRANSACTIONS=true

# Phase 4: Public deprecated
FEATURE_DEPRECATE_PUBLIC_SCHEMA=true
```

### 6.2 Monitoring

**app/Console/Commands/MonitorTransactionProcessing.php**:
```php
<?php

namespace App\Console\Commands;

use App\Models\Backend\Transaction;
use Illuminate\Console\Command;

class MonitorTransactionProcessing extends Command
{
    protected $signature = 'transactions:monitor';

    public function handle(): void
    {
        $stats = [
            'pending' => Transaction::where('status', Transaction::STATUS_PENDING)->count(),
            'processing' => Transaction::where('status', Transaction::STATUS_PROCESSING)->count(),
            'completed' => Transaction::where('status', Transaction::STATUS_COMPLETED)->count(),
            'failed' => Transaction::where('status', Transaction::STATUS_FAILED)->count(),
        ];

        $this->table(
            ['Status', 'Count'],
            collect($stats)->map(fn($count, $status) => [$status, $count])->values()
        );

        // Alert bei vielen Failed
        if ($stats['failed'] > 10) {
            $this->error("⚠️  Warning: {$stats['failed']} failed transactions!");
        }
    }
}
```

---

## Zeitplan

| Phase | Beschreibung | Dauer |
|-------|--------------|-------|
| 1 | Backend Models & DB Config | 1-2 Tage |
| 2 | CSV Upload Service | 2-3 Tage |
| 3 | KI Workflow Integration | 3-5 Tage |
| 4 | Frontend Anpassung | 3-4 Tage |
| 5 | Datenmigration | 3-5 Tage |
| 6 | Testing & Rollout | 2-3 Tage |

**Total**: 14-22 Tage (3-4 Wochen)

---

## Nächste Schritte

### Sofort starten:
1. ✅ Database Config erweitern
2. ✅ Backend Models erstellen
3. ✅ Ersten Upload-Test durchführen

Soll ich mit der **Implementierung von Phase 1** beginnen?