Notarius v0.8.1

This patch release refreshes ConfigKit and PromptKit and makes the project's licensing, policy provenance, and upstream attribution easier to find.

Changes

Update ConfigKit to v0.4.2 and PromptKit to v0.11.2. These upstream patches update release tooling and policy or licensing documentation without changing the Notarius integration APIs or configured profile settings.
Refresh the PromptKit built-in profile-source checkpoint identity for the selected dependency version. Existing checkpoints with the previous identity are not reused; source-keyed chunk plans and published output are unaffected.
Align the repository policies with their pinned upstream source, add canonical third-party attribution, and distinguish the GPL-3.0-or-later application grant from the CC-BY-SA-4.0 terms for copied or adapted policy material. The root GPL license text has been brought into the house-standard form without changing the application grant.

Notarius's CLI, configuration schema, subprocess receipt, and durable artifact formats have no intentional changes in this release.