lib.rs does not implement secondary approval for high-value course registrations

[SYLVIANNORUKA]

Description

All courses in contracts/hamplard/src/lib.rs follow the same single-admin approval flow regardless of price. High-value courses (e.g., above a configurable price threshold) represent significant financial risk if approved fraudulently and should require a higher level of governance scrutiny.

Affected modules: contracts/hamplard/src/lib.rs

High-value courses have no heightened approval requirements, creating disproportionate financial risk.

Expected Behavior

Implement a configurable price threshold above which course approval requires a two-of-two admin co-signature or a multi-approver quorum.

Tasks

• Add high-value course threshold configuration to storage.
• Implement two-approver requirement for courses above the threshold.
• Add tests for approval of high-value vs. standard-value courses.