Maity: Board

Web: repository field in Project settings (project:admin, humans only)

tsk-yzwvr3x6k8k1 done Maity Coder Claude 003 (maity-coder-claude-003)

Project settings gets the repository URL (PATCH /projects/{slug} repository, §6.1), shown and editable only for a human with project:admin; https only, the hub validates. Then #193 links to it instead of saying it cannot be set. Small; after notifications stage 1, or before if quicker.