chore: convert guru-connect to submodule; integrate ADR-008 + 2026-05-29 session log

guru-connect is now tracked as a submodule (azcomputerguru/guru-connect @ e3e95f8);
its working state was published to the GC repo first, so no content is lost. guru-rmm
advanced to include ADR-008 (GC integration boundary) replayed on top of the team's
Integrations Center / discovery advances. Includes the native-remote-control spec
(now inside the GC submodule), the versionable-products memory, and the session log.

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

projects/msp-tools/guru-connect/server/guruconnect.service

@@ -1,45 +0,0 @@
-[Unit]
-Description=GuruConnect Remote Desktop Server
-Documentation=https://git.azcomputerguru.com/azcomputerguru/guru-connect
-After=network-online.target postgresql.service
-Wants=network-online.target
-
-[Service]
-Type=simple
-User=guru
-Group=guru
-WorkingDirectory=/home/guru/guru-connect/server
-
-# Environment variables (loaded from .env file)
-EnvironmentFile=/home/guru/guru-connect/server/.env
-
-# Start command
-ExecStart=/home/guru/guru-connect/target/x86_64-unknown-linux-gnu/release/guruconnect-server
-
-# Restart policy
-Restart=on-failure
-RestartSec=10s
-StartLimitInterval=5min
-StartLimitBurst=3
-
-# Resource limits
-LimitNOFILE=65536
-LimitNPROC=4096
-
-# Security hardening
-NoNewPrivileges=true
-PrivateTmp=true
-ProtectSystem=strict
-ProtectHome=read-only
-ReadWritePaths=/home/guru/guru-connect/server
-
-# Logging
-StandardOutput=journal
-StandardError=journal
-SyslogIdentifier=guruconnect
-
-# Watchdog (server must send keepalive every 30s or systemd restarts)
-WatchdogSec=30s
-
-[Install]
-WantedBy=multi-user.target