Inkdrop v6 rebuilds its editor, preview and storage engine

Inkdrop v6 replaces its Atom-era editor foundation with CodeMirror 6, adding slash commands, inline link and note suggestions, image resizing, and OS-native spellcheck.

The release also updates the Markdown renderer with preview search, code-block improvements, GitHub snippet embeds, and interactive Mermaid controls, while opt-in AI tools include inline assistance, Next Edit Suggestions, and simplified MCP agent setup.

Under the hood, Inkdrop moves to SQLite, reports 13x faster database access and 23x faster code-block rendering, and adds ARM64 builds for Windows and Linux.