chore: major project cleanup and restructuring

## Dokumentation
- Entfernt AGENTS.md (redundant zu CLAUDE.md)
- Verschoben: 3 Dokumentationen von root → docs/
- Gelöscht: 8 historische Migrations-Pläne aus docs/archive/
- Entfernt: misc/ Ordner komplett (43 Dateien)

## Struktur
- Erstellt: database/queries/ für SQL Test-Queries (4 Dateien)
- Erstellt: database/schemas/ für Schema-Dokumentation (17 Dateien)
  - output_keys_mapping/ (8 CSV-Mappings)
  - migration-diagrams/ (4 Diagramme)

## Code-Qualität
- Formatiert: 7 Style-Issues in 74 Dateien mit Laravel Pint
- Gefixed: Migration für PostgreSQL/SQLite Kompatibilität
- Gefixed: 2 fehlgeschlagene Tests (CSRF + Text-Assertion)

## Tests
- Alle 73 Tests bestehen jetzt (100% Success Rate)
- AuthenticationTest: CSRF-Token Fix für Logout-Test
- CompanySearchTest: Text-Assertion aktualisiert

## Ergebnis
- Root ist sauber (nur CLAUDE.md)
- Dokumentation strukturiert in docs/
- Database-Dateien organisiert in database/
- Code entspricht Style-Guide
- Alle Tests bestehen

database/schemas/backend_transaction_outputs_output_keys.csv

@@ -0,0 +1,102 @@
+"output_key"
+"corporate_summary"
+"corporate_history"
+"corporate_purpose"
+"corporate_sector"
+"corporate_nace"
+"corporate_products"
+"corporate_markets"
+"corporate_supply"
+"corporate_name"
+"corporate_form"
+"corporate_forum"
+"corporate_HQ"
+"corporate_locations"
+"corporate_holding"
+"corporate_shareholders"
+"corporate_board"
+"corporate_supervisory"
+"corporate_powerofattorney"
+"corporate_taxID"
+"corporate_LEI"
+"corporate_UBO"
+"corporate_employeecount"
+"corporate_turnover"
+"corporate_EBIT"
+"corporate_netprofits"
+"corporate_balancesheet"
+"corporate_auditfindings"
+"corporate_insolvency"
+"corporate_liquidation"
+"corporate_adhoc"
+"corporate_pressrelease"
+"corporate_votes"
+"corporate_directordealings"
+"corporate_brands"
+"corporate_website"
+"corporate_domain"
+"corporate_IBAN"
+"corporate_solvency"
+"corporate_rating"
+"corporate_ESG"
+"corporate_license"
+"corporate_warnings"
+"corporate_eusanctions"
+"corporate_ofacsanctions"
+"corporate_uksanctions"
+"corporate_pepexposure"
+"corporate_adversemediascanning"
+"corporate_corruptionexposure"
+"corporate_AMLexposure"
+"corporate_CTYexposure"
+"tranx_TX_AMOUNT"
+"tranx_historical"
+"tranx_TX_PURPOSE"
+"tranx_counterpartyassessment"
+"tranx_context"
+"tranx_report"
+"tranx_PURPOSEbase"
+"tranx_performanceperiod"
+"tranx_seasonality"
+"tranx_resolution"
+"trans_IBANvalidation"
+"tranx_businesslogic"
+"source_domaincheck"
+"tranx_plausibilty"
+"tranx_outliers"
+"tranx_patterns"
+"tranx_revenueimpact"
+"tranx_profitimpact"
+"tranx_marketimpact"
+"source_check"
+"source_approveuniqueID"
+"sanctions_circumvention"
+"corruption_sector"
+"corruption_country"
+"corruption_relationship"
+"corporate_adverse"
+"corporate_pep"
+"corporate_adverse2"
+"tranx_duplicate"
+"tranx_pattern2"
+"corporate_exportcontrol"
+"corporate_mediamatch"
+"tranx_contracttenor"
+"corporate_haven"
+"tranx_mismatch"
+"country_risk"
+"corporate_haven2"
+"corporate_insiders"
+"corporate_courtcases"
+"corporate_manda"
+"tranx_fakepurposecheck"
+"tranx_structuring"
+"tranx_newbankaccount"
+"corporate_pepdetail"
+"tranx_weekday"
+"tranx_holdingobfuscation"
+"source_randomplausibility"
+"tranx_score"
+"tranx_reasoning"
+"tranx_recommendation"
+"tranx_sourcerepository"