Add Nod (AI meeting note-taker for macOS)

[dbarabashh]

Adding Nod to the Proprietary section.

Nod (https://hellonod.app/) is a native macOS app that automatically records, transcribes and summarizes meetings, calls and voice notes, then lets you query everything with "Ask Nod". No meeting bot required.

• Platform: macOS (native Swift)
• License: Proprietary
• Notable: 13-language transcription, 22+ integrations, audio is never stored, data kept in the EU, no model training on user data

Checklist

• Primarily for note-taking / meeting knowledge management
• Concise description ending with a period
• Link goes to the official website
• Icons accurate (📕 stored in DB; no iOS/Android, sync or E2EE so none added)
• Added to the correct category (Proprietary), alphabetical order
• Not a duplicate