StringKit-FP v1.9.3

Highlights

• Migrated the documentation site to DocSprout with the teal colour preset, search, themes, and homepage cards.
• GitHub Pages publishing now validates with docsprout check and docsprout audit, builds the site, and uploads a deterministic offline ZIP with its SHA-256 sidecar.
• Documentation version history restarts with the DocSprout pipeline; pre-migration release sites are no longer published.
• Removed the custom documentation builder and its validation scripts.

Full Changelog: v1.9.2...v1.9.3