Add NeverOnce - persistent correctable AI memory

[WeberG619]

What

Adds NeverOnce to the AI memory tools table.

Entry

| NeverOnce | https://github.com/WeberG619/neveronce | Open source | https://github.com/WeberG619/neveronce | Memory Tool | Key-Value |

About NeverOnce

NeverOnce is a lightweight, persistent AI memory library with a unique corrections-first design:

• Corrections always surface first — mistakes are stored separately and never decay, ensuring AI agents learn from errors persistently
• Zero dependencies — pure Python stdlib, 400 lines
• SQLite-backed — local-first, no cloud required
• MCP server included — works with Claude Desktop, Cursor, and any MCP client
• pip install neveronce

The key differentiator: corrections have their own storage tier and priority queue — they always appear before regular memories, so the AI never forgets its mistakes.