diff --git a/README.md b/README.md
index dc85c91..d76d47f 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,21 @@ See [docs/Client.CLI.md](docs/Client.CLI.md) and [docs/Client.UI.md](docs/Client
 
 ## Documentation
 
+### Architecture deep-dives
+
+| Topic | Doc |
+|---|---|
+| OPC UA server composition, namespace fan-out, Polly invoker | [docs/OpcUaServer.md](docs/OpcUaServer.md) |
+| Address space layout | [docs/AddressSpace.md](docs/AddressSpace.md) |
+| Read / Write dispatch (driver vs virtual vs scripted-alarm) | [docs/ReadWriteOperations.md](docs/ReadWriteOperations.md) |
+| Incremental sync (driver-backend rediscovery + config publishes) | [docs/IncrementalSync.md](docs/IncrementalSync.md) |
+| Service hosting (Server + Admin + optional historian sidecar) | [docs/ServiceHosting.md](docs/ServiceHosting.md) |
+| Security (transport, LDAP, certificates) | [docs/security.md](docs/security.md) |
+| Redundancy | [docs/Redundancy.md](docs/Redundancy.md) |
+| Status dashboard | [docs/StatusDashboard.md](docs/StatusDashboard.md) |
+
+### Drivers
+
 | Topic | Doc |
 |---|---|
 | Driver specs (per-driver capability surface, config, addressing) | [docs/v2/driver-specs.md](docs/v2/driver-specs.md) |
@@ -79,12 +94,22 @@ See [docs/Client.CLI.md](docs/Client.CLI.md) and [docs/Client.UI.md](docs/Client
 | Modbus / S7 / AbCip / AbLegacy / TwinCAT / FOCAS / OpcUaClient | [docs/drivers/](docs/drivers/) |
 | Galaxy parity rig (mxaccessgw setup) | [docs/v2/Galaxy.ParityRig.md](docs/v2/Galaxy.ParityRig.md) |
 | Galaxy performance + tracing | [docs/v2/Galaxy.Performance.md](docs/v2/Galaxy.Performance.md) |
-| Service hosting | [docs/ServiceHosting.md](docs/ServiceHosting.md) |
-| Security (transport, LDAP, certificates) | [docs/security.md](docs/security.md) |
-| Redundancy | [docs/Redundancy.md](docs/Redundancy.md) |
-| Address space | [docs/AddressSpace.md](docs/AddressSpace.md) |
-| Configuration | [docs/Configuration.md](docs/Configuration.md) |
-| Status dashboard | [docs/StatusDashboard.md](docs/StatusDashboard.md) |
+
+### Clients
+
+| Topic | Doc |
+|---|---|
+| Client CLI | [docs/Client.CLI.md](docs/Client.CLI.md) |
+| Client UI (Avalonia desktop) | [docs/Client.UI.md](docs/Client.UI.md) |
+
+### v1 archive
+
+The original v1 in-process MXAccess docs (Galaxy.Host topology,
+Configuration env vars, AlarmTracking, DataTypeMapping,
+HistoricalDataAccess, Subscriptions, etc.) are preserved under
+[docs/v1/](docs/v1/) — historical reference only. PR 7.2 retired the
+v1 architecture on 2026-04-30; current state is documented in the
+sections above.
 
 ## License