Document Ledger payment gateways and GNU Taler

[roncodes]

Summary

This PR updates the official Fleetbase Ledger documentation to make Payment Gateways a dedicated section under Payments and documents GNU Taler as a supported Ledger gateway.

What Changed

• Replaced the old single payments/gateways.mdx page with a nested Payment Gateways section.
• Added gateway pages for:
  • GNU Taler
  • Stripe
  • Cash
  • QPay
• Added a complete GNU Taler guide covering:
  • Merchant Backend requirements
  • Ledger gateway setup
  • admin diagnostics
  • tenant-safe webhook payload requirements
  • invoice payment flow
  • refund URI handling
  • settlement and reconciliation expectations
  • sandbox E2E validation guidance
  • production runbook notes
• Updated Ledger overview, quickstart, core concepts, wallet, payment overview, and custom gateway recipe references so GNU Taler is listed with Stripe, Cash, and QPay.

Why

GNU Taler is now part of the Ledger gateway lifecycle and should be documented in the official Fleetbase docs rather than package-local markdown files. The docs now present all supported Ledger payment gateways in one discoverable section.

Validation

• git diff --check passed.
• pnpm generate:api-docs passed when run with the arm64 Node runtime matching the installed esbuild binary.
• pnpm lint ran but failed on pre-existing repo-wide TS/React lint issues unrelated to these docs changes.
• pnpm build compiled successfully, then failed during page data collection because the Ghost Content API returned HTTP 402 for /blog/[slug].

Notes

Unrelated local changes in vendor/postman and pnpm-workspace.yaml were intentionally left out of this PR.

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Project	Deployment	Actions	Updated (UTC)
fleetbase-io	Ready	Preview, Comment	Jul 16, 2026 10:51am