v1.16.0

✨ Features

• Auto-save with draft/versioning: auto-save writes to blog_post_drafts without touching published translations. New BlogPostDraft/Version and CmsPageDraft/Version models. History with line-by-line diff. "Save & Publish" / "Save as Draft" for posts AND CMS pages.
• Cmd+S / Ctrl+S: manual save with distinct "Manually saved at" indicator.
• History diff: clickable modal showing changed fields between versions, with text diff (+, −, ▲ X chars) and per-field block diff.
• Draft vs published diff: current draft is compared to the last published version with the same diff rendering.
• Auto-save on Create page: first auto-save creates a placeholder BlogPost with title, redirects to edit.
• Configurable series subtitle: multilingual subtitle field in Settings > Series Settings.
• CMS page support: auto-save, history, Cmd+S and diff also work on CMS pages.

🐛 Bug Fixes

• Schema::getState() side-effect: replaced with getRawState() / $this->data to prevent saveRelationships() from writing to live translations.
• Repeater fillFromRelationship(): afterStateHydrated loads draft data after the Repeater overwrites with fillFromRelationship().
• Indicator DOM persistence: ensureInDOM() re-injects the indicator element after each Livewire re-render.
• Array comparison for blocks: comparison via array_values() to ignore UUID differences between draft and version.