docs(audit): align documentation with post-remediation backend reality

- Update data model enums to match backend models
- Update API reference auth requirements
- Add dispute module references and warning blocks
- Add 2026-05-24 audit remediation callout to Overview
- Generate task breakdowns and audit artifacts
- Add doc alignment report (.taskmaster/reports/)

Taskmaster/Tasks/task-3-2.md

@@ -0,0 +1,35 @@
+---
+taskmaster_id: "3.2"
+status: "done"
+priority: "high"
+depends_on: ["3.1"]
+parent_id: "3"
+source: "taskmaster"
+generated_at: "2026-05-24T07:15:25.199Z"
+---
+
+# 3.2 - Implement provider configuration, feature flags, and safe rollback
+
+- [x] 3.2 - Implement provider configuration, feature flags, and safe rollback #taskmaster #priority/high #status/done ⏫ 🆔 tm-3-2 ⛔ tm-3-1
+
+## Metadata
+
+| Field | Value |
+| --- | --- |
+| Taskmaster ID | 3.2 |
+| Status | done |
+| Priority | high |
+| Dependencies | 3.1 |
+| Parent | 3 - Migrate payment architecture toward Request Network and internal funds management |
+
+## Description
+
+Add runtime provider selection, rollout controls, env validation, and one-command kill-switch to revert to SHKeeper.
+
+## Details
+
+_No details._
+
+## Verification
+
+_No verification strategy._