Replace the upstream 9seconds/mtg sidecar with the dolonet/mtg-multi fork so a single MTProto inbound can serve many per-user secrets. Each panel client is now one named FakeTLS secret in the fork's [secrets] section: clients are first-class (attach/detach, limits, expiry, per-client tg:// links) exactly like every other protocol, mirroring the WireGuard multi-client model. Per-client traffic and online status come from the fork's /stats JSON API (its Prometheus output has no per-user label), fed into the existing email-keyed client_traffics accumulator; an optional throttle caps concurrent connections. A one-time seeder converts each legacy single-secret inbound into a one-client inbound.
The fork ships only linux/darwin amd64/arm64 binaries but is pure Go, so provisioning builds it from source for every supported platform (release.yml, DockerInit.sh) while keeping the panel-expected mtg-<os>-<arch> filename and the 'run' verb, so process.go is untouched. Also fixes a pre-existing update.sh gap that never renamed the mtg binary for armv6/armv7 updates.
The architecture/code map previously lived in .claude/CLAUDE.md, which was
gitignored (local-only) and auto-loaded into every agent session alongside
the root CLAUDE.md. Track it in docs/architecture.md instead and reference
it from CLAUDE.md so it is read on demand.
While moving it, fact-check the whole map against the current tree:
- add the missing internal/eventbus and internal/tunnelmonitor packages,
the service/email subpackage, and util/wirecodec
- document node mTLS (tls_client.go, node_mtls.go, setting_mtls.go) and the
fourth TLS verify mode
- add the Host, ClientExternalLink, NodeClientIp and ClientGlobalTraffic
models plus their symptom-index rows
- correct the cron table (check_cpu_usage is 1m not 10s; add
check_memory_usage and free_os_memory), the middleware chain
(MaxBodyBytes, ConfigEnvelope, CSRF) and the controller route prefixes
- refresh the sub/ and service/ file listings, frontend pages (hosts/,
index/), CI workflow list, and replace stale exact line counts with
rounded sizes
MHSanaei