Form Module Improvements - Tiered form sign-offs (AM-I-374)

• Problem: Multi-stage approvals needed.

• Actionables:

  • Configure stages (e.g., Level 1 → Level 2), criteria, and per-stage assignees.

  • Conditional routing based on field values or form type.

  • Notifications per stage; lock edits post-sign-off if policy requires.

• Success criteria:

  • Forms progress through configured stages; only relevant assignees notified.

Context: This proposal is part of the broader storyline AM-I-856.