[F-02] Professor role bootstrap and first-owner setup

[ounold]

Summary

Define how the first professor account becomes the workspace owner and how student accounts get linked to the correct professor-owned records.

Type

Foundation

Status at import

proposed

Why this matters

The current auth scaffold treats users generically, but the product needs one professor with global visibility and many students with narrow visibility.

Depends on

• F-01

Blocks / Unlocks

• Unlocks: S-01, S-02, S-03

PRD references

• US-01
• US-05
• FR-003
• FR-004

Definition of done

• The professor ownership model is explicit
• Student accounts can be linked to the correct supervision records
• Generic auth is converted into product-specific ownership rules

Notes

• Imported from context/foundation/roadmap.md