docs: MCP gateway git/gitlab/paper-search; CT 109 plan; new backrest/db/arcane docs
- mcp-gateway.md: 26 servers (added git, gitlab, paper-search catalog bridge);
document --pass-environment requirement for env var passthrough in DinD bridges
- ct-inventory.md + homelab-architecture.md: CT 109 IP conflict, CT 113 live
- proxmox-state.md §16: Loki, sshwifty, Alloy, IP conflict note, sidecar table
expanded to CT 103/111/113; build order updated
- infra/portmap.md: CT 113 db section; QNAP TS-251D (Klipper/Mainsail)
- services/backrest.md: full backup strategy doc (new)
- services/databases.md: CT 113 postgres/WAL-G/pgAdmin doc (new)
- services/arcane.md: Docker management IDE doc (new)
- CHANGELOG.md: 2026-05-22 entry
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
fkrebs
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