Initial commit: autonomous maintenance agent for semprini stack

systemd-deployed daemon that drives the semprini-core stack-support agent
headless via Claude Code, monitors health via Uptime Kuma, applies safe
upgrades, and escalates to the operator over Matrix.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,11 @@
+# Secrets — hold the Matrix bot token + password
+config.json
+.bot-secrets
+
+# Python
+__pycache__/
+*.pyc
+
+# Runtime state (also lives under ~/.local/state by default)
+state.json
+*.log