znote: Zettelkasten CLI Note Manager

A single-file Python CLI tool (zk.py) implementing the full Zettelkasten method as described in the Desktop Commander / Obsidian Practical Setup Guide. No dependencies beyond Python 3.8+ stdlib. Creates and manages a local markdown vault compatible with Obsidian.

Inputs

• Python 3.8+ (no pip installs needed)
• Optional: ZK_VAULT environment variable to set vault location (default: ~/Zettelkasten)
• Optional: EDITOR environment variable for note editing (default: nano)

Vault Structure