[18][UPD] deltatech_sale_payment: store=True, statusuri complete, mig…

[dhongu]

…rare SQL

• store=True pe payment_amount, payment_status, provider_id cu @api.depends complet
• Status pending adăugat ca stare distinctă
• Facturi in_payment excluse din payment_amount (evită dubla numărare)
• payment_amount capped la 0 (evită valori negative din refund-uri fără plată)
• Decorații complete pentru toate statusurile în formular
• Filtre complete în lista de comenzi (6 statusuri)
• action_payment_link: calcul corect pe amount_residual din facturi postate
• Migrare SQL 18.0.1.2.0: populează payment_amount, payment_status, provider_id pe comenzile existente via sale_order_line_invoice_rel (fix join cartezian)
• Teste actualizate: product existent din DB, teste noi pentru pending/cancelled/authorized

[codecov]

Codecov Report

❌ Patch coverage is 82.53968% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.69%. Comparing base (6aaa07e) to head (65ec9d8).

Files with missing lines	Patch %	Lines
deltatech_sale_payment/models/sale.py	79.54%	6 Missing and 3 partials ⚠️
deltatech_sale_payment/tests/test_sale.py	89.47%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             18.0    #2469      +/-   ##
==========================================
+ Coverage   72.63%   72.69%   +0.05%     
==========================================
  Files        1229     1229              
  Lines       19874    19876       +2     
  Branches     2803     2801       -2     
==========================================
+ Hits        14436    14448      +12     
+ Misses       4633     4622      -11     
- Partials      805      806       +1     

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