- AccountingIntegrationService: read payment_type key (dispatched) not type key (wrong fallback)
  that was silently routing every payment journal to the default catch-all account
- InstallmentController: fire installment.plan_created (correct) not installment_plan.created
  so AR journal entry is created when a plan is made from the installments UI
- AccountCodes: remap all constants to accounts that actually exist in chart_of_accounts DB
  - form_fee → 410103 (استمارات عضويات), membership_fee → 410101 (عضويات جديدة)
  - addition_fee → 410102 (إضافة عضويات)
  - installment → 410510 (الاقساط), down_payment → 410503 (مقدم عضويه)
  - waiver_fee/death_fee → 410515 (إيرادات متنوعه)
  - sports_registration/sa_form_fee → 410516 (استمارات نشاط)
  - fine → 410512 (غرامة تاخير), SERVICE_REVENUE → 410515 (exists, was 4110 which did not exist)
- DB: corrected treasury 3 account_code from 12060103 (EUR label) to 12060101 (EGP)
  which was causing form_fee journals to debit the wrong sub-treasury cash account
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>