docs: highlight zero-API-key setup for Claude Max/Pro subscribers

Author: Grivn

README.md

@@ -17,6 +17,8 @@ LLM agents forget everything between sessions. Context compaction drops critical
 
 Mnemon gives your agent persistent, cross-session memory — a four-graph knowledge store with intent-aware recall, importance decay, and automatic deduplication. Single binary, zero API keys, one setup command.
 
+> **Claude Max / Pro subscriber?** Mnemon works entirely through your existing subscription — no separate API key required. Your LLM subscription *is* the intelligence layer. Two commands and you're done.
+
 ### Why Mnemon?
 
 Most memory tools embed their own LLM inside the pipeline. Mnemon takes a different approach: **your host LLM is the supervisor.** The binary handles deterministic computation (storage, graph indexing, search, decay); the LLM makes judgment calls (what to remember, how to link, when to forget). No middleman, no extra inference cost.