Harden Workday connection setup and runtime verification

[Surendra Goutham (is-goutham)]

Summary

• Harden the resumable six-phase Workday connection lifecycle.
• Add live verification for physical connections, topic activation, and final agent binding.
• Separate successful topic activation from unresolved flow dependency diagnostics.
• Add exact-path rollback for dynamically resolved User Context topics.
• Improve customer guidance for identity providers, certificates, connection creation, and phase progress.
• Strengthen state, evidence, endpoint, identity, and runtime approval validation.

Validation

• 202 Workday-focused tests passed.