diff --git a/docs/v2/dev-environment.md b/docs/v2/dev-environment.md
index a3310b0..a615b80 100644
--- a/docs/v2/dev-environment.md
+++ b/docs/v2/dev-environment.md
@@ -22,6 +22,102 @@ Per decision #99:
 
 The tier split keeps developer onboarding fast (no Docker required for first build) while concentrating the heavy simulator setup on one machine the team maintains.
 
+## Installed Inventory — This Machine
+
+Running record of every v2 dev service stood up on this developer machine. Updated on every install / config change. Credentials here are **dev-only** per decision #137 — production uses Integrated Security / gMSA per decision #46 and never any value in this table.
+
+**Last updated**: 2026-04-17
+
+### Host
+
+| Attribute | Value |
+|-----------|-------|
+| Machine name | `DESKTOP-6JL3KKO` |
+| User | `dohertj2` (member of local Administrators + `docker-users`) |
+| VM platform | VMware (`VMware20,1`), nested virtualization enabled |
+| CPU | Intel Xeon E5-2697 v4 @ 2.30GHz (3 vCPUs) |
+| OS | Windows (WSL2 + Hyper-V Platform features installed) |
+
+### Toolchain
+
+| Tool | Version | Location | Install method |
+|------|---------|----------|----------------|
+| .NET SDK | 10.0.201 | `C:\Program Files\dotnet\sdk\` | Pre-installed |
+| .NET AspNetCore runtime | 10.0.5 | `C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App\` | Pre-installed |
+| .NET NETCore runtime | 10.0.5 | `C:\Program Files\dotnet\shared\Microsoft.NETCore.App\` | Pre-installed |
+| .NET WindowsDesktop runtime | 10.0.5 | `C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\` | Pre-installed |
+| .NET Framework 4.8 SDK | — | Pending (needed for Phase 2 Galaxy.Host; not yet required) | — |
+| Git | Pre-installed | Standard | — |
+| PowerShell 7 | Pre-installed | Standard | — |
+| winget | v1.28.220 | Standard Windows feature | — |
+| WSL | Default v2, distro `docker-desktop` `STATE Running` | — | `wsl --install --no-launch` (2026-04-17) |
+| Docker Desktop | 29.3.1 (engine) / Docker Desktop 4.68.0 (app) | Standard | `winget install --id Docker.DockerDesktop` (2026-04-17) |
+| `dotnet-ef` CLI | 10.0.6 | `%USERPROFILE%\.dotnet\tools\dotnet-ef.exe` | `dotnet tool install --global dotnet-ef --version 10.0.*` (2026-04-17) |
+
+### Services
+
+| Service | Container / Process | Version | Host:Port | Credentials (dev-only) | Data location | Status |
+|---------|---------------------|---------|-----------|------------------------|---------------|--------|
+| **Central config DB** | Docker container `otopcua-mssql` (image `mcr.microsoft.com/mssql/server:2022-latest`) | 16.0.4250.1 (RTM-CU24-GDR, KB5083252) | `localhost:1433` | User `sa` / Password `OtOpcUaDev_2026!` | Docker named volume `otopcua-mssql-data` (mounted at `/var/opt/mssql` inside container) | ✅ Running |
+| Dev Galaxy (AVEVA System Platform) | Local install on this dev box | v1 baseline | Local COM via MXAccess | Windows Auth | Galaxy repository DB `ZB` on local SQL Server (separate instance from `otopcua-mssql` — legacy v1 Galaxy DB, not related to v2 config DB) | ✅ Available (per CLAUDE.md) |
+| GLAuth (LDAP) | Local install at `C:\publish\glauth\` | v1 baseline | `localhost:3893` (LDAP) / `3894` (LDAPS) | Bind DN `cn=admin,dc=otopcua,dc=local` / password in `glauth-otopcua.cfg` | `C:\publish\glauth\` | Pending — v2 test users + groups config not yet seeded (Phase 1 Stream E task) |
+| OPC Foundation reference server | Not yet built | — | `localhost:62541` (target) | `user1` / `password1` (reference-server defaults) | — | Pending (needed for Phase 5 OPC UA Client driver testing) |
+| FOCAS TCP stub | Not yet built | — | `localhost:8193` (target) | n/a | — | Pending (built in Phase 5) |
+| Modbus simulator (`oitc/modbus-server`) | — | — | `localhost:502` (target) | n/a | — | Pending (needed for Phase 3 Modbus driver; moves to integration host per two-tier model) |
+| libplctag `ab_server` | — | — | `localhost:44818` (target) | n/a | — | Pending (Phase 3/4 AB CIP and AB Legacy drivers) |
+| Snap7 Server | — | — | `localhost:102` (target) | n/a | — | Pending (Phase 4 S7 driver) |
+| TwinCAT XAR VM | — | — | `localhost:48898` (ADS) (target) | TwinCAT default route creds | — | Pending — runs in Hyper-V VM, not on this dev box (per decision #135) |
+
+### Connection strings for `appsettings.Development.json`
+
+Copy-paste-ready. **Never commit these to the repo** — they go in `appsettings.Development.json` (gitignored per the standard .NET convention) or in user-scoped dotnet secrets.
+
+```jsonc
+{
+  "ConfigDatabase": {
+    "ConnectionString": "Server=localhost,1433;Database=OtOpcUaConfig_Dev;User Id=sa;Password=OtOpcUaDev_2026!;TrustServerCertificate=true;Encrypt=false;"
+  },
+  "Authentication": {
+    "Ldap": {
+      "Host": "localhost",
+      "Port": 3893,
+      "UseLdaps": false,
+      "BindDn": "cn=admin,dc=otopcua,dc=local",
+      "BindPassword": "<see glauth-otopcua.cfg — pending seeding>"
+    }
+  }
+}
+```
+
+For xUnit test fixtures that need a throwaway DB per test run, build connection strings with `Database=OtOpcUaConfig_Test_{timestamp}` to avoid cross-run pollution.
+
+### Container management quick reference
+
+```powershell
+# Start / stop the SQL Server container (survives reboots via Docker Desktop auto-start)
+docker stop otopcua-mssql
+docker start otopcua-mssql
+
+# Logs (useful for diagnosing startup failures or login issues)
+docker logs otopcua-mssql --tail 50
+
+# Shell into the container (rarely needed; sqlcmd is the usual tool)
+docker exec -it otopcua-mssql bash
+
+# Query via sqlcmd inside the container (Git Bash needs MSYS_NO_PATHCONV=1 to avoid path mangling)
+MSYS_NO_PATHCONV=1 docker exec otopcua-mssql /opt/mssql-tools18/bin/sqlcmd -S localhost -U sa -P "OtOpcUaDev_2026!" -C -Q "SELECT @@VERSION"
+
+# Nuclear reset: drop the container + volume (destroys all DB data)
+docker stop otopcua-mssql
+docker rm otopcua-mssql
+docker volume rm otopcua-mssql-data
+# …then re-run the docker run command from Bootstrap Step 6
+```
+
+### Credential rotation
+
+Dev credentials in this inventory are convenience defaults, not secrets. Change them at will per developer — just update this doc + each developer's `appsettings.Development.json`. There is no shared secret store for dev.
+
 ## Resource Inventory
 
 ### A. Always-required (every developer + integration host)