fix: comprehensive API compatibility fixes across issuer/user/ai services and Flutter
Backend:
- issuer-service: fix credit-metric entity column names to match DB schema
(breakage_ratio, market_tenure_months, user_satisfaction, computed_score, etc.)
- issuer-service: add page/limit to ListStoresQueryDto and ListEmployeesQueryDto
- issuer-service: add period field to ReconciliationQueryDto
- issuer-service: fix IssuerStatsController to use req.user.id→issuerId lookup
- issuer-service: add analytics stubs (users/demographics/repurchase/ai-insights)
- issuer-service: add issuers/me/coupons endpoint
- user-service: add GET /users/payment-methods stub before /:id route
- ai-service: add GET /ai/sessions/current/messages stub endpoint
Flutter:
- genex-mobile: fix /users/kyc/status → /users/kyc
- genex-mobile: fix announcements offset→page param
- genex-mobile: fix trading paths (/trading/* → /trades/*)
- admin-app: fix announcements offset→page param
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>