Prepare project for pipeline takeover: task tracker, UX doc, CLAUDE.md pointers

Adds docs/tasks/ (16 epics + 102 stories converted to task/subtask files with
statuses.md as the new status source of truth) and docs/ux-design.md
(retrospective design-system reference), and points CLAUDE.md at them.
docs/prd.md and docs/architecture.md are kept as BMAD wrote them; the legacy
docs/stories/, docs/epics/, docs/qa/gates/ and .bmad-core/ stay in place as
historical/traceability records, superseded but not deleted.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

docs/tasks/2.md

@@ -0,0 +1,22 @@
+---
+id: 2
+title: 2 User Management System
+status: Ready for Dev
+date: 2026-09-27
+---
+
+## Description
+
+Gives the admin full lifecycle control over client accounts: creating individual and company/corporate accounts, converting between types, deactivating or permanently deleting accounts, resetting passwords, and sending welcome-email notifications. All operations are audit-logged.
+
+## Acceptance Criteria
+
+- [ ] Admin can create individual client accounts
+- [ ] Admin can create company/corporate client accounts
+- [ ] Admin can convert between account types
+- [ ] Admin can deactivate accounts (data retained)
+- [ ] Admin can permanently delete accounts
+- [ ] Admin can reset client passwords
+- [ ] Welcome email sent with login credentials
+- [ ] User search and filtering functional
+- [ ] All operations logged for audit