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-backup.service

@@ -1,20 +0,0 @@
-[Unit]
-Description=GuruConnect PostgreSQL Backup
-Documentation=https://git.azcomputerguru.com/azcomputerguru/guru-connect
-
-[Service]
-Type=oneshot
-User=guru
-Group=guru
-WorkingDirectory=/home/guru/guru-connect/server
-
-# Environment variables (database password)
-EnvironmentFile=/home/guru/guru-connect/server/.env
-
-# Run backup script
-ExecStart=/bin/bash /home/guru/guru-connect/server/backup-postgres.sh
-
-# Logging
-StandardOutput=journal
-StandardError=journal
-SyslogIdentifier=guruconnect-backup