docs: update agent guidance and changelog

AGENTS.md

@@ -34,7 +34,7 @@
 - Media hosting relies on Tailscale Funnel when using Twilio; use `warelay webhook --ingress tailscale` or `--serve-media` for local hosting.
 
 ## Agent-Specific Notes
-- If the relay is running in tmux (`warelay-relay`), restart it after code changes: kill pane/session and run `pnpm warelay relay --verbose` inside tmux. Check tmux before editing; keep the watcher healthy if you start it.
+- Relay is managed by launchctl (label `com.steipete.warelay`). After code changes restart with `launchctl kickstart -k gui/$UID/com.steipete.warelay` and verify via `launchctl list | grep warelay`. Use tmux only if you spin up a temporary relay yourself and clean it up afterward.
 - Also read the shared guardrails at `~/Projects/oracle/AGENTS.md` and `~/Projects/agent-scripts/AGENTS.MD` before making changes; align with any cross-repo rules noted there.
 
 ## Exclamation Mark Escaping Workaround

CHANGELOG.md

@@ -8,6 +8,9 @@
 - Logging now rolls daily to `/tmp/warelay/warelay-YYYY-MM-DD.log` (or custom dir) and prunes files older than 24h to reduce data retention.
 - Media server now rejects symlinked files and ensures resolved paths stay inside the media directory, closing traversal via symlinks; added regression test. (Thanks @joaohlisboa)
 
+### Performance
+- Web auto-replies using the Pi agent now keep a single long-lived `tau` process in RPC mode instead of spawning per message, eliminating cold-start latency while preserving session/cwd handling.
+
 ## 1.3.0 — 2025-12-02
 
 ### Highlights