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-5-2.md

@@ -0,0 +1,35 @@
+---
+taskmaster_id: "5.2"
+status: "pending"
+priority: "high"
+depends_on: ["1"]
+parent_id: "5"
+source: "taskmaster"
+generated_at: "2026-05-24T07:15:25.199Z"
+---
+
+# 5.2 - Build Telegram identity linking and session model
+
+- [ ] 5.2 - Build Telegram identity linking and session model #taskmaster #priority/high #status/pending ⏫ 🆔 tm-5-2 ⛔ tm-1
+
+## Metadata
+
+| Field | Value |
+| --- | --- |
+| Taskmaster ID | 5.2 |
+| Status | pending |
+| Priority | high |
+| Dependencies | 1 |
+| Parent | 5 - Deliver Telegram-native app, bot, and wallet experience |
+
+## Description
+
+Implement secure account linking between Telegram users and Amanat accounts.
+
+## Details
+
+Backend must verify Telegram Mini App initData before creating a Telegram session. Store an auditable Telegram user ID to Amanat user link. Support existing users, new users, unlinking, blocked accounts, duplicate-link attempts, session expiry, replay protection, rate limits, and audit logs.
+
+## Verification
+
+See Telegram-native PRD acceptance criteria.