docs: source-verified deferment register + correct 17 drifted docs

Adds deferment.md — a source-verified inventory of new-driver status, all 17
open issues, in-code deferrals, open live gates and plan bookkeeping. Every
claim was checked against src/ and git, not against documentation.

Headline finding: three subsystems are authored, persisted and shipped but
never executed —
  * Node ACLs: IPermissionEvaluator/TriePermissionEvaluator have zero
    production consumers and OtOpcUaNodeManager never references them, yet
    ClusterAcls.razor authors NodeAcl rows and ConfigComposer.cs:51 ships them
    in every artifact. An authored deny rule has no effect.
  * IRediscoverable / IHostConnectivityProbe raise into the void (#518/#507);
    nothing ever writes a DriverHostStatus row.
  * DriverTypeRegistry is vestigial, so no factory passes a tier and every
    driver runs Tier A with the Tier-C protections dormant.

Also records the Calculation driver as picker-visible but unauthorable
(DriverConfigModal has no case) — the "registered but unauthorable" class
recurring after the Sql picker defect — and notes that no parity test guards
DriverConfigModal/DeviceModal, which is why it survived review.

Documentation corrections (source-verified):
  * ReadWriteOperations.md claimed "a denied read never hits the driver" via
    four types that do not exist in src/. Bannered + struck through; a security
    review reading that page would have concluded a per-node ACL gate exists.
  * CLAUDE.md: the Change Detection sentence was false (DriverHost consumes
    nothing); the mesh Phase 4 and Phase 5 live gates and the auto-down 1-vs-1
    gate had all PASSED; the ScriptedAlarmState table was already dropped.
  * driver-expansion tracking: Modbus RTU and SQL poll are merged, not
    pending — its command table would have made someone rebuild two shipped
    drivers in a fresh worktree.
  * drivers/README.md: dead DriverTypeRegistry paragraph, retired
    SystemPlatform namespace kind, missing Sql + Calculation rows, missing
    Modbus RTU-over-TCP transport.
  * TwinCAT.md/Galaxy.md promised an address-space rebuild that never happens.
  * Historian.md gained the #491 unproven-value-capture pointer.
  * IncrementalSync.md and AddressSpace.md bannered as wholesale v2-era (the
    rewrite is recorded as still owed, not done here); four v2 status docs
    bannered as historical; three wrong-name-for-a-live-type fixes.

Left deliberately untouched: the secrets NoOpSecretReplicator line, which
makes a security claim and needs the real behaviour identified rather than a
rename.

deferment.md

@@ -0,0 +1,361 @@
+# Deferment register — new drivers, open issues, deferred work
+
+> **Scope.** A source-verified inventory of what is unfinished in this repo: the status of the
+> recently-added drivers, every open tracker issue, in-code deferrals, open live gates, and the
+> documentation that misstates any of it.
+>
+> **Method.** Five parallel agents swept the tree independently; every claim below was checked
+> against **source** (`src/`, `tests/`, `git log`), not against documentation. Where a doc and the
+> code disagreed, the code won and the doc is listed in §7. Findings that could not be verified
+> without hardware or a live rig are marked **CANNOT VERIFY** rather than asserted.
+>
+> **Baseline.** `master` @ `90bdaa44`, 2026-07-27. All local branches are merged into master; the
+> only unmerged remotes are three abandoned branches (`origin/auto/driver-gaps` 184 commits behind
+> since 2026-04-26, `origin/auto/driver-gaps-stash`, `origin/refactor/galaxy-mxgateway-client-rename`).
+
+---
+
+## 0. The short version
+
+The driver runtime is in good shape — **no new driver contains a stub, a `NotImplementedException`,
+or an unregistered factory.** What is unfinished clusters into four groups, in descending order of
+how much they should worry you:
+
+| # | Theme | Why it matters |
+|---|---|---|
+| **1** | **Three subsystems are fully authored, persisted, and shipped — and never executed.** Node ACLs, `IRediscoverable`/`IHostConnectivityProbe`, and `DriverTypeRegistry`. | An operator can author a rule, save it, deploy it green, and have it do **nothing**. §3 |
+| **2** | **AdminUI authoring-dispatch gaps.** Calculation is offered in the driver picker but has no config form; three drivers have no device form; CSV + browse-commit dispatch maps miss the new drivers. | The "registered but unauthorable" class that has now bitten twice. §1.2 |
+| **3** | **17 open issues, all confirmed still open**, several broader than filed. | §2 |
+| **4** | **Bookkeeping drift.** 8 `.tasks.json` files show ~140 "pending" tasks for work that shipped; 5 CLAUDE.md status claims are stale. | Someone follows the tracker and rebuilds a shipped driver. §6, §7 |
+
+Nothing here is a data-loss or outage defect. The sharpest edge is §3 — silent non-enforcement.
+
+---
+
+## 1. New drivers — source-verified status
+
+Cross-cutting facts, verified once: all 12 driver types register in one place
+(`src/Server/ZB.MOM.WW.OtOpcUa.Host/Drivers/DriverFactoryBootstrap.cs:147-164`); all 12 register a
+probe (`:119-130`) via `AddOtOpcUaDriverProbes()`, called from **both** the driver path (`:93`) and
+the admin path — **no probe is admin-node-missing**. `DriverTypeNames`
+(`src/Core/ZB.MOM.WW.OtOpcUa.Core.Abstractions/DriverTypeNames.cs`) is guarded bidirectionally by
+reflection in `tests/Core/…Core.Abstractions.Tests/DriverTypeNamesGuardTests.cs`.
+
+### 1.1 Status table
+
+| Driver | Verdict | Merged | Capabilities | Notes |
+|---|---|---|---|---|
+| **MTConnect** | Complete-with-gaps | `90bdaa44` (#506) | `IDriver, IReadable, ISubscribable, ITagDiscovery, IHostConnectivityProbe, IRediscoverable` (`MTConnectDriver.cs:63`) | No `IWritable` **by design** (`:50`). No device form. |
+| **MQTT / Sparkplug B** | **Complete** | `c3a2b0f7` | `+ IRediscoverable, IAsyncDisposable` (`MqttDriver.cs:65-66`) | Cleanest of the five: picker + driver form + device form + tag editor all present. 8 open follow-up issues. |
+| **Sql** | Complete-with-gaps | `4ad54037`, follow-ups `28c28667` | `IDriver, ITagDiscovery, IReadable, ISubscribable, IHostConnectivityProbe` (`SqlDriver.cs:28-29`) | No device form; no browse-commit branch; stale comments. |
+| **Modbus RTU-over-TCP** | **Complete** | `0f38f486` (#495) | transport mode inside Modbus (`ModbusTransportMode.cs`, `ModbusRtuOverTcpTransport.cs`) | Parses transport **by name** (`ModbusDriverFactoryExtensions.cs:77-78`) — dodges the systemic numeric-enum authoring bug. |
+| **Calculation** | **Partial (authoring gap)** | pre-existing | `IDriver, IDependencyConsumer, ISubscribable, IReadable` (`CalculationDriver.cs:38`) | **Registered + offered in the picker, but has no config form.** See §1.2. |
+
+`IWritable` is absent from MTConnect, MQTT, Sql and Calculation. In all four this is **structural and
+documented**, not a stub (`MTConnectDriver.cs:50`, `MqttDriver.cs:483`, `SqlDriver.cs:15`).
+
+**Zero `NotImplementedException`** across all five drivers. Every `NotSupportedException` is either a
+`catch` filter or a deliberate domain error.
+
+### 1.2 Gaps found — AdminUI authoring & dispatch layer
+
+Every gap below is in the **authoring/dispatch layer, not driver runtime code**.
+
+| # | Gap | Evidence | Impact |
+|---|---|---|---|
+| G-1 | **`DriverConfigModal.razor` has no `Calculation` case** — falls to the `default` "No typed config form" warning; no `CalculationDriverForm.razor` exists | `DriverConfigModal.razor:34-72`, default arm `:69-71` | `CalculationDriverOptions.RunTimeout` (`CalculationDriverOptions.cs:19`) is **unauthorable via the UI**. Create/rename still work, so degraded — not a hard block. **This is the same class as the Sql picker defect, one modal further downstream.** |
+| G-2 | **`DeviceModal.razor` is missing Sql, MTConnect, Calculation** | `DeviceModal.razor:42-74`, default arm `:71-73` | Mitigated: Sql/MTConnect hold connection at the **driver** level, and Test Connect still works via `BuildMergedProbeConfig` (`:180-184`). |
+| G-3 | **`DriverConfigModal.razor:77` tells Sql/MTConnect operators the wrong thing** — the single-connection branch is hardcoded to `Galaxy or Mqtt`, so Sql/MTConnect users are told the endpoint lives on the *device* when they just authored it on the driver | `DriverConfigModal.razor:77`, `:86-88` | Actively misleading, compounds G-2. |
+| G-4 | **No parity test guards `DriverConfigModal` or `DeviceModal`** — `RawDriverTypeDialogCoverageTests`/`…ParityTests` assert `DriverTypeNames` ↔ **picker** parity only | — | **This is exactly why G-1 and G-2 survived review.** The guard pattern exists and simply was not extended to the two downstream dispatch maps. |
+| G-5 | **`CsvColumnMap` has no typed columns for Sql, MQTT, MTConnect** | `CsvColumnMap.cs:340-452` | CSV import/export degrades to the raw `TagConfigJson` fallback while the 7 older drivers get typed columns. |
+| G-6 | **`RawBrowseCommitMapper` has no Sql branch** — falls to the generic `WriteSingleKey("address", …)` whose comment claims "Browsable drivers are all handled above" | `RawBrowseCommitMapper.cs:121-141`, fallback `:145` | Untrue since `SqlDriverBrowser` was registered (`EndpointRouteBuilderExtensions.cs:83`). Same failure mode the MTConnect branch (`:135-139`) was added to avoid: typed editor opens empty, blanks the field on save. |
+| G-7 | **`EquipmentTagConfigInspector` covers only 6 driver types** | `:24-29` | Pre-existing (OpcUaClient + Galaxy absent too); no new driver was added. |
+
+### 1.3 Stale in-code comments (harmless at runtime, misleading to the next reader)
+
+- `DriverTypeNames.cs:22-25` — Calculation described as "not-yet-registered"; it registers at `DriverFactoryBootstrap.cs:149`.
+- `TagConfigEditorMap.cs:25-28` + `TagConfigValidator.cs:27-28` — "`DriverTypeNames.Sql` deliberately absent until Task 11"; the constant exists (`DriverTypeNames.cs:57`) and the values are identical, so behaviour is correct.
+- `RawDriverTypeDialog.razor:2-4, 59-60` — "its factory lands in Wave C".
+- `CsvColumnMap.cs:322-324` — hardcodes `CalculationDriverType = "Calculation"` "Not yet a `DriverTypeNames` constant"; it has been one since `DriverTypeNames.cs:54`.
+- `SqlDriver.cs:218-220` — justifies not re-parsing config on the premise "the factory builds a fresh instance", **disproved** by `DriverInstanceActor.cs:316` + `DriverHostActor.cs:2565`. Should be corrected alongside #516.
+
+---
+
+## 2. Open tracker issues — all 17 verified against source
+
+**No issue was found stale.** 11 CONFIRMED, 4 PARTIALLY (core claim holds, a sub-claim is wrong or
+incomplete), 2 CANNOT VERIFY (correctly filed as hardware/fixture-gated).
+
+| # | Title (abbrev.) | Verdict | Key evidence | Kind |
+|---|---|---|---|---|
+| **518** | `IRediscoverable` + `IHostConnectivityProbe` have no consumer; CLAUDE.md wrong | **CONFIRMED — worse than filed** | Only `+=` in `src/` are Galaxy self-wiring (`GalaxyDriver.cs:586`, `:221`). `GetHostStatuses()` has **zero call sites** outside the interface + implementations; `DriverHostStatuses` DbSet is referenced only by its declaration and a test. | Defect + doc error |
+| **507** | Discovered-node injection inert in v3 | **CONFIRMED** | `DriverHostActor.cs:986-1002` hard-`return;` + `#pragma warning disable CS0162` (restored `:1077`) | Deferred (deliberate guard) |
+| **519** | No Bad/Uncertain **sub-code** reaches a client | **CONFIRMED** | Collapse at `DriverInstanceActor.cs:1033-1041` (`statusCode >> 30`), re-expand at `OtOpcUaNodeManager.cs:3318-3322`. Enum is 3-state at `IOpcUaAddressSpaceSink.cs:165`. **Wider than filed** — `StatusFromQuality` also used at `:429/:506/:576/:761`, so alarm-condition Quality collapses too. | Design consequence |
+| **517** | Health published AFTER teardown | **CONFIRMED, fleet-wide** | `ModbusDriver.cs:244-250`, `MTConnectDriver.cs:579-590`, `S7Driver.cs:292-326` — all `Teardown…` then `WriteHealth(Unknown)`; `GetHealth()` is a plain field read | Defect (race) |
+| **516** | Driver config edits silently discarded | **CONFIRMED — survey now complete** | `DriverInstanceActor.cs:316` (only `_driver` assignment) + `DriverHostActor.cs:2565` (`Tell` existing child, no respawn) + `:653/:660` (green seal). **Affected: Modbus, FOCAS, OpcUaClient, + AbLegacy (issue missed it), + Sql (deliberate/documented).** AbCip/TwinCAT re-parse ✅; Galaxy fails **loud** (throws, `GalaxyDriver.cs:600-641`) | Defect |
+| **515** | Sparkplug `DataSet`/`Template`/`PropertySet` | **CONFIRMED** | `SparkplugCodec.cs:207-210` decode to `Unsupported` — visible refusal, not silent drop. *(`PropertySet` isn't a `ValueOneofCase`; it rides `metric.Properties`)* | Deferred feature |
+| **514** | Rebirth unarmable on a plant that hasn't birthed | **CONFIRMED** | `RawBrowseModal.razor:119-120` disabled; `_rebirthTarget` set only by tree-click handlers (`:432`, `:437`, `:439-451`). Empty tree ⇒ permanently disabled | Defect (chicken-and-egg) |
+| **513** | Meaningless `payloadFormat` in Sparkplug blob | **CONFIRMED** | `MqttTagConfigModel.cs:210` unconditional `Set`, vs. mode-aware `:216` | Defect (cosmetic) |
+| **512** | `.Browser` → `.Driver` layering | **CONFIRMED** | `…Mqtt.Browser.csproj:43` (**not :44**), boxed "KNOWN, DELIBERATE EXCEPTION" at `:16-42` | Deferred refactor |
+| **511** | `ActAsPrimaryHost` does nothing | **CONFIRMED** | Option at `MqttDriverOptions.cs:193`, round-tripped in the UI, handled only by a warning at `MqttDriver.cs:933-948`. No STATE publish, no Last Will | Deferred feature |
+| **510** | `_canRebirth` captured at browse-open | **CONFIRMED** | `RawBrowseModal.razor:377` sole `true` assignment; failure path `:516-539` never re-evaluates | Defect (stale affordance) |
+| **509** | Metric name with `/` unbrowse-committable | **CONFIRMED** | `RawBrowseCommitMapper.cs:63` uses browse name verbatim → `RawPaths.cs:39` rejects `/` → `RawTreeService.cs:976` **all-or-nothing** kills the whole batch | Defect |
+| **508** | MQTT write-through | **CONFIRMED** | `MqttDriver.cs:66` — no `IWritable`; consequence at `DriverInstanceActor.cs:673-677` | Deferred feature |
+| **507**→ see above | | | | |
+| **491** | Continuous-historization live gate | **CANNOT VERIFY** (needs VPN'd gateway) | Code **is** complete: `AddressSpaceApplier.cs:238`→`:540`→`ActorHistorizedTagSubscriptionSink.cs:27-38`→`ContinuousHistorizationRecorder.cs:84`, wired `ServiceCollectionExtensions.cs:435` | Deferred test |
+| **489** | Hot-rebind renamed raw tag | **CONFIRMED** | No implementation exists | Deferred feature |
+| **481** | Comms-loss → scripted-alarm quality (Layer 4) | **CONFIRMED** | `DriverHostActor.cs:1356-1379` iterates `_alarmNodeIdByDriverRef` only. **Issue is wrong that the per-driver ref set is missing** — `_nodeIdByDriverRef` exists at `:193`; only the fan-out into the mux is absent, so the work is *smaller* than filed | Deferred feature |
+| **468** | Wave-0 browser tree render | **CANNOT VERIFY** (fixture) | Code path present (`AbCipDriver.cs:1092-1095`, `LibplctagTagEnumerator.cs:29-37`); `ab_server` returns `ErrorUnsupported` for CIP Symbol Object enumeration | Deferred verification |
+
+### 2.1 Cross-cutting observations
+
+1. **#518 → #507 are the same failure, stacked.** The event has no subscriber *and* its downstream
+   handler hard-returns. **Fixing either alone changes nothing observable** — schedule them together.
+2. **#516 is a superset of part of #489.** For the five drivers that discard reinit config, the
+   renamed-tag-never-rebinds symptom follows mechanically (their `_tagsByRawPath` still keys on the
+   old RawPath). Re-scope #489 after #516.
+3. **#519 and #481 share the same `statusCode >> 30` collapse idiom** at three independent sites
+   (`DriverInstanceActor.cs:1033`, `ScriptedAlarmEngine.cs:745`, `:777`). Widening the status path
+   must cover all three.
+
+---
+
+## 3. Dead seams — authored, shipped, never executed
+
+**The most consequential category in this register**, and the one nothing in the code flags. Three
+subsystems are fully built and reachable by operators, but no production code path executes them.
+
+### 3.1 Node-level ACLs are authorable, deployed — and unenforced
+
+- `IPermissionEvaluator`, `TriePermissionEvaluator`, `PermissionTrieCache`, `PermissionTrieBuilder`
+  have **zero references outside `src/Core/ZB.MOM.WW.OtOpcUa.Core/Authorization/` and their own
+  tests** (independently re-verified for this report: every other grep hit is a `bin/`/`obj/` XML doc artifact).
+- `OtOpcUaNodeManager` contains **no reference to `Permission` or `Evaluator` at all.**
+- Meanwhile `ClusterAcls.razor` + `AclEdit.razor` let operators author `NodeAcl` rows, and
+  **`ConfigComposer.cs:51` snapshots them into every deployment artifact.**
+
+**Impact:** an operator authors a deny rule, deploys it green, and it has no effect. Actual
+enforcement is coarse LDAP roles plus the realm-qualified `WriteOperate` gate in the node manager —
+and that is a **write** gate; reads carry no per-node ACL check.
+**`docs/ReadWriteOperations.md:13,21` states the opposite** (see §7.1) — it is the single
+highest-risk doc error found.
+
+### 3.2 `IRediscoverable` + `IHostConnectivityProbe` raise into the void
+
+Gitea #518/#507. Nine drivers raise; nothing consumes. `DriverHostStatus` table exists
+(`OtOpcUaConfigDbContext.cs:48`, migration `20260715230637_V3Initial.cs:108`) with a doc-comment
+claiming a writer — **nothing ever writes a row.**
+
+**Impact:** an Agent/PLC/Galaxy restart leaves a stale address space behind a Healthy driver, and the
+per-host connectivity table is permanently empty.
+
+### 3.3 `DriverTypeRegistry` is vestigial
+
+Independently verified for this report: `src/Core/…Core.Abstractions/DriverTypeRegistry.cs:20` is
+referenced **only** by `tests/Core/…/DriverTypeRegistryTests.cs`. Nothing registers metadata at
+startup; nothing validates `DriverInstance.DriverType` against it. Its `AllowedNamespaceKinds` field
+was retired with the v3 `Namespace` entity (`DriverTypeRegistry.cs:97`).
+
+**Knock-on:** the driver **stability tier** does not come from here either. The live source is
+`DriverFactoryRegistry.cs:46` (`DriverTier tier = DriverTier.A`) and **no factory in `src/Drivers/`
+passes a tier** — so all 12 drivers run Tier A, and the Tier-C-only protections are dormant for
+every driver: `MemoryRecycle.cs:54` (`when _tier == DriverTier.C`) and
+`ScheduledRecycleScheduler.cs:43` (refuses unless Tier C). `docs/v2/driver-stability.md` still
+assigns Galaxy and FOCAS to Tier C.
+
+### 3.4 Related dead/dormant code
+
+| Item | Evidence |
+|---|---|
+| `IDriverConfigEditor` — interface, zero implementors, zero production consumers | `Core.Abstractions/IDriverConfigEditor.cs:9`; superseded by `TagConfigEditorMap` / `DriverConfigModal` |
+| `GenericDriverNodeManager` — explicitly **not** a production dispatch path | `Core/OpcUa/GenericDriverNodeManager.cs:71` ("verified 07/#10: zero production references") |
+| `IDriverSupervisor` — Tier-C recycle machinery has **zero implementations**, yet the parser still validates `RecycleIntervalSeconds` | archreview 01/U-2 |
+| Resilience **bulkhead** — documented, defaulted, parsed, AdminUI-authorable; `Build` never adds a concurrency limiter | archreview 01/U-6 |
+| `WriteIdempotentAttribute` — zero readers; write dispatch hardcodes `isIdempotent: true` | archreview 01/S-8 = 03/S12 |
+| ~60 lines of unreachable code retained behind #507's guard | `DriverHostActor.cs:1002`, `#pragma warning disable CS0162` |
+| Three empty `Driver.Historian.Wonderware*` directories (0 `.cs`, no `.csproj`, absent from `.slnx`) | verified for this report — only stale `bin/`+`obj/` remain |
+
+---
+
+## 4. In-code deferrals by subsystem
+
+The tree is unusually clean on classic markers: **9 `TODO`s across 1,812 files; zero
+`FIXME`/`HACK`/`XXX`/`WORKAROUND`; zero `#if false`; zero `[Obsolete]` on project code; zero
+commented-out DI registrations.** Real deferred work lives in prose doc-comments and skipped tests.
+
+### 4.1 Highest-consequence
+
+| Item | Evidence |
+|---|---|
+| **Telemetry snapshot cache never evicted** — a decommissioned driver replays last-known Health/Resilience to new subscribers forever | `TelemetryLocalHub.cs:40` `TODO(mesh-phase5+)` — self-declared, bounded, "pre-production, accepted" |
+| **Device host recovered by string-matching instead of `DeviceConfig`** — 7 of the repo's 9 TODOs are this one item, across 4 drivers | `FocasDriver.cs:137,287`; `TwinCATDriver.cs:775`; `AbLegacyDriver.cs:557`; `AbCipDriver.cs:89,1272` + `AbCipDriverOptions.cs:130` — all `TODO(v3 WaveC)` |
+| **Galaxy writes can never confirm a COM commit** — empty status array ⇒ provisional Good, metered `galaxy.writes.unconfirmed` | `GatewayGalaxyDataWriter.cs:44,328,354` — **cross-repo**, blocked on mxaccessgw |
+| **Subscription liveness undetectable** — `ISubscriptionHandle` is opaque | `DriverInstanceActor.cs:527` (#488) — well-reasoned, deferred "until a real occurrence" |
+| **`/raw` "Browse device" is still a placeholder** despite the universal discovery browser landing | `RawTree.razor:15,426` — **verify**; may be reachable now via `DiscoveryDriverBrowser` |
+
+### 4.2 Per-driver
+
+- **S7** — array **writes** unsupported entirely (`S7Driver.cs:1139`); several array *read* types unsupported (`:386,404,413,419,428,442,465,807,959`) — all fail fast at config-validation; legacy C-area counter reinterpretation live-hardware-gated (`:759`); Counter BCD on S7-300/400 undecoded.
+- **AbCip** — ALMD-only alarm projection, ALMA deferred (`AbCipAlarmProjection.cs:16,324`); no CIP Template Object reader, UDT layouts declaration-driven (`AbCipDriverOptions.cs:172`); whole-UDT writer deferred (`LibplctagTagRuntime.cs:190`); `AckCmd` pulse must be wired client-side (`:30`).
+- **Sql** — `SqlTagModel.Query` deferred to P3, **enforced end-to-end** across parser, validator, planner and editor (`SqlProvider.cs:22,37`; `SqlEquipmentTagParser.cs:24,103`; `SqlGroupPlanner.cs:44,249`; `SqlTagConfigModel.cs:114`) — exemplary deferral discipline. Postgres/ODBC dialects deferred behind `ISqlDialect`.
+- **MTConnect** — `TIME_SERIES` vectors deferred to P1.5; `DATA_SET`/`TABLE` coded `BadNotSupported` with a null value rather than approximated (`MTConnectObservationIndex.cs:53,272`) — deliberately chosen over a Good-coded lie. `RawTagEntry.DeviceName` ignored for routing (two `/raw` Devices under one driver share an Agent connection) — "a design change, not a bug fix". No DataType-vs-blob validation at authoring.
+- **MQTT** — `MaxPayloadBytes` is a constructor knob, not operator-facing (`MqttSubscriptionManager.cs:170`).
+- **TwinCAT** — Flat-mode struct expansion carries a **LIVE RISK** note, unverified against a real TC3 target (`AdsTwinCATClient.cs:270`); VirtualTree-mode browse unverified; TC2 coverage, multi-hop AMS route and lab rig all hardware-blocked (`docs/v3/twincat-backlog.md`).
+- **FOCAS** — forces read-only regardless of authored `writable:true`; servo-load semantics inferred from the wire, unconfirmed against a real CNC (`FocasWireClient.cs:944`); `"Backend": "unimplemented"` is a **deliberate fail-fast stub**, not unfinished work.
+- **Historian.Gateway** — String/DateTime/Reference writes deferred, gated on the analog SQL write path; `UInt16 → Uint4` widening because the `UInt2` write path is deferred upstream (`HistorianTypeMapper.cs:27-51`).
+
+### 4.3 Fleet-wide OPC UA gaps
+
+- **Array writes deferred across all drivers**; **multi-dimensional arrays (`ValueRank>1`) unsupported**; **array historization** is an opaque blob with no per-element history (`docs/Uns.md:288-292`, `AddressSpaceApplier.cs:873`, `OtOpcUaNodeManager.cs:1764`).
+- **`HistoryUpdate`** — permission bit `1<<12` shipped but excluded from every composite bundle; no service surface (`NodePermissions.cs:34`).
+- **`Utils.Log*` is `[Obsolete]`** in SDK 1.5.378, suppressed at 8 sites in `OtOpcUaNodeManager` pending an `ITelemetryContext` rewire.
+
+### 4.4 Skipped tests — 36, from 4 reason constants
+
+| Count | Reason | Assessment |
+|---|---|---|
+| 18 | `DiscoveryInjectionDormantV3` | **Real** — blocked on #507 |
+| 13 | `EquipmentTagsDarkBatch4` | **STALE** — the reason says these unblock "at Batch 4"; Batch 4 shipped as v3.0 and the path was *retired* (`AddressSpaceApplier.cs:415` calls it "the vestigial equipment-tag path"). These will never unskip as written — delete or rewrite the reason. |
+| 4 + 1 | `EquipmentDeviceBindingRetired`, `DarkBatch4` | Intentional tombstones preserving retirement rationale — fine as-is |
+
+Plus **4 whole OpcUaClient test suites that are scaffold-only**, awaiting an in-process OPC UA server
+fixture that was never built (`OpcUaClientSubscribeAndProbeTests`, `…DiscoveryTests`,
+`…ReadWriteTests`, `…HistoryTests`, all `:10`).
+
+All env-gated integration suites **skip cleanly** when their vars are absent. The MTConnect gate is
+notably a **real `/probe` reachability + payload-shape check** (`MTConnectAgentFixture.cs:42`), not
+mere env-var presence, so it cannot pass vacuously.
+
+---
+
+## 5. Open live gates
+
+| Gate | Status | Evidence |
+|---|---|---|
+| **Continuous-historization value capture** (#491) | **OPEN** — code complete, unproven in production | `CLAUDE.md:710`; no gate-passed commit exists |
+| **Wave-0 universal discovery browser** full tree render (#468) | **OPEN** — fixture-blocked | tracking doc §Wave 0; named as blocking BACnet browse |
+| **archreview R2-03** — VT Good→Bad on a data-fed rig | **OPEN** — explicitly "live-blocked on this data-less rig" | `archreview/plans/STATUS.md` |
+| **archreview R2-10** — force breaker-OPEN live | **OPEN** — breaker-OPEN state never forced live | `archreview/plans/R2-10-*.tasks.json` |
+| **Driver-reconfigure-while-faulted** Task 3 | **OPEN** — task subject literally "DEFERRED" | `2026-07-14-driver-reconfigure-while-faulted-plan.md.tasks.json` |
+| Galaxy `ScanStateProbeParityTests` | **OPEN** — licence-gated (one `$WinPlatform` on this box) | `docs/v2/Galaxy.ParityRig.md:180` |
+| **v2 GA exit criteria** — FOCAS live-CNC wire smoke (#54), OPC UA CTT/compliance pass, Ignition 8.3 redundancy cutover | **OPEN** — manual/hardware/external-tool | `docs/v2/v2-release-readiness.md:105-120` |
+| mesh Phase 4 | ✅ **PASSED** `1281aebf` | CLAUDE.md said open — **corrected**, §7.2 |
+| mesh Phase 5 | ✅ **PASSED** `f134935f` | CLAUDE.md said pending — **corrected**, §7.2 |
+| auto-down 1-vs-1 crash-the-oldest | ✅ **PASSED** — Phase 7 drill D4, `c50ebcf7` | CLAUDE.md said open — **corrected**, §7.2 |
+
+**Note on the 14 archreview `deferred-live` tasks across 8 plans:** `archreview/plans/STATUS.md:242-305`
+records a 2026-07-13 live pass closing several (R2-02, R2-07, R2-11, R2-04, R2-05-partial) and
+2026-07-15 closures for R2-01/R2-08/R2-06 — **but the `.tasks.json` files were never updated.** Only
+R2-03 and R2-10 have no closure record anywhere.
+
+---
+
+## 6. Plan bookkeeping — stale vs. live
+
+**59 of 78 `docs/plans/*.tasks.json` are 100 % complete.** Of the remaining 19, most are stale
+bookkeeping, not backlog.
+
+### 6.1 STALE — work shipped, file never updated (~140 phantom "pending" tasks)
+
+| File | Recorded | Reality |
+|---|---|---|
+| `2026-07-24-mtconnect-driver.md.tasks.json` | 23 pending | Merged at master tip `90bdaa44`, 5-leg live gate PASSED |
+| `2026-07-24-mqtt-sparkplug-driver.md.tasks.json` | 27 pending | All 27 done, both phases live-gated |
+| `2026-07-24-sql-poll-driver.md.tasks.json` | 22 pending | Merged `4ad54037` + follow-ups `28c28667` |
+| `2026-07-24-modbus-rtu-driver.md.tasks.json` | 11 pending | Merged `0f38f486` (#495), live gate PASSED |
+| `2026-06-26-otopcua-historian-gateway-integration.md.tasks.json` | 21 pending | Shipped as PR #423, live-validated |
+| `2026-06-15/16-stillpending-phase-{0-1,2,3,4}.md.tasks.json` | 12+9+10+8 pending | Shipped — audit §D cites `1e95856b`, `ada01e1a`, `fc8121cb`, `3e609a2b`, `70e6d3d2`, `c236263e`, `bd8fee61`, `5e27b5f7`, `fcb38014` |
+| `2026-07-22-per-cluster-mesh-program.md.tasks.json` | Phase 2 in_progress, 3–7 pending | Plan body `:331-342` says **program COMPLETE** |
+| `2026-06-12-historian-tcp-transport.md.tasks.json` | 12 pending | **OBSOLETE** — targets the retired Wonderware sidecar |
+
+### 6.2 GENUINELY LIVE
+
+| File | Open | Note |
+|---|---|---|
+| **`2026-05-29-adminui-followups.md.tasks.json`** | **19 pending / 0 completed** | **The largest unexecuted plan in the tree.** Generic `CollectionEditor<TRow>`; per-driver device/tag editors ×7; typed resilience form; `RoleMapper.Merge` + DB-backed LDAP→role mapping + `RoleGrants.razor` + FleetAdmin authz. **Several items look superseded by v3's `TagConfigEditorMap` — verify overlap before executing.** |
+| `2026-06-19-followups-batch.md.tasks.json` | 4 pending + 1 partial | B4 F10b surgical DataType/IsArray writes and B5 alarm-severity `SetSeverity` are **OPEN-by-choice, not built** |
+| `2026-06-26-otopcua-fixedtree-followups.md.tasks.json` | 1 pending | Task 11 build + regression |
+| `2026-05-26-akka-hosting-alignment-plan.md.tasks.json` | 5 partial | F8/F9/F10/F13/F14 — oldest open items; **likely superseded by v3, verify** |
+| `2026-05-28-adminui-driver-pages-plan.md.tasks.json` | 1 partial | 10.4 manual smoke checklist |
+
+`docs/plans/2026-07-23-mesh-phase4-…tasks.json` Task 9 was the only `deferred`-flagged mesh task —
+**it has since landed** (`3a590a0c`), so that file is now stale too.
+
+### 6.3 Review-directory state
+
+- **`code-reviews/`** — 51 modules, **zero Open findings**. One textual "Left Open pending a decision"
+  survives in a finding body (`Configuration/findings.md:254`, LDAP collation) whose status field
+  reads Deferred — the only index inconsistency.
+- **`code-reviews/` coverage gap** — **10 shipped source projects have never been reviewed**:
+  `Driver.Calculation`, `Driver.Historian.Gateway`, `Driver.Mqtt` (+`.Browser`, `.Contracts`),
+  `Driver.MTConnect` (+`.Contracts`), `Driver.Sql` (+`.Browser`, `.Contracts`). Meanwhile three
+  modules review the **retired** Wonderware backend.
+- **`archreview/`** — `00-OVERALL.md:60-79` carries an explicit "Carried open … no remediation branch
+  targeted them" block. The largest coherent batch is the **failure-visibility trio**: 01/S-1
+  (`AddressSpaceApplier` swallows every sink failure, deploy reports Applied even when broken), 03/S4
+  (primary gate default-allow on unknown role), 06/S-1 (Galaxy optimistic write success).
+- **`stillpending.md` does not exist** — the backlog is `docs/plans/2026-06-18-stillpending-backlog-audit.md`.
+
+---
+
+## 7. Documentation corrections
+
+### 7.1 Applied in this pass
+
+| File | Was | Now |
+|---|---|---|
+| `CLAUDE.md` §Change Detection (`:156`) | "The server's `DriverHost` consumes the signal and rebuilds the address space" | ⚠️ nothing consumes it; names `DriverHostActor.cs:986`, #518/#507, and the four affected drivers |
+| `CLAUDE.md` §Redundancy (`:272`) | auto-down "live gate is still open … docker-dev is a single six-node mesh" | gate **CLOSED** by Phase 7 drill D4 (`c50ebcf7`); the six-node-mesh claim also contradicted CLAUDE.md's own Phase 6 paragraph |
+| `CLAUDE.md` §Telemetry (`:383`) | Phase 5 "code-complete on `feat/mesh-phase5`, live gate pending" | merged `35552a96`; live gate PASSED `f134935f` |
+| `CLAUDE.md` §Phase 4 (`:493`, `:502-503`) | `ScriptedAlarmState` "dropping it is a deferred follow-up, tracked as Task 9"; "Task 9 and the live gate (Task 10) are still open" | table **dropped** (`3a590a0c`, migration `20260723183050_DropScriptedAlarmStateTable`); live gate PASSED `1281aebf` |
+| `docs/plans/2026-07-24-driver-expansion-tracking.md` | Modbus RTU "pending merge"; SQL poll "📝 Plan ready (22 tasks)"; **an "Executing a plan" table instructing you to rebuild both** | both marked ✅ Done with merge SHAs; the two shipped rows struck from the command table; Wave 1/2 headings and §Next actions corrected |
+| `docs/drivers/README.md` | `DriverTypeRegistry` "registered at startup"; "namespace kinds (Equipment + SystemPlatform)"; no Sql/Calculation rows; "Modbus TCP" only | registry marked vestigial + tier truth; namespace line corrected to Raw+UNS; Sql + Calculation rows added; Modbus row covers RTU-over-TCP |
+| `docs/drivers/TwinCAT.md` (`:95`, `:99-103`, `:151`) | "so the address space is rebuilt" / "so Core rebuilds the address space" | raises-but-unconsumed caveat, mirroring the wording `Mqtt.md`/`MTConnect.md` already use correctly |
+| `docs/drivers/Galaxy.md` (`:73`) | `IRediscoverable` row with no caveat | same caveat added |
+| `docs/v2/Runtime.md` (`:106`) | "named-pipe IPC to the Wonderware historian sidecar + `SqliteStoreAndForwardSink`" | gRPC to HistorianGateway + `LocalDbStoreAndForwardSink` |
+| **`docs/ReadWriteOperations.md`** (`:13`, `:21` + banner) | "ACL enforcement (`WriteAuthzPolicy` + `AuthorizationGate`) runs before the source branch"; "**A denied read never hits the driver**" | Both struck through and corrected; banner states plainly that **no per-node ACL gate exists on any operation** and that `GenericDriverNodeManager` is test scaffolding. **This was the highest-risk doc error found.** |
+| **`docs/IncrementalSync.md`** (banner) | whole "Rebuild flow" + generation-publish path presented as current | Banner: `GenericDriverNodeManager` is non-production, rediscovery has no consumer, `sp_PublishGeneration`/`sp_ComputeGenerationDiff` `RAISERROR`, `DraftRevisionToken` gone; names the one live path (deploy artifact) |
+| **`docs/AddressSpace.md`** (banner) | "single custom namespace"; `Phase7Applier`/`Phase7Composer`/`GalaxyTagPlan`; `SystemPlatform` | Banner: two namespaces w/ `V3NodeIds`, the `AddressSpace*` rename (`40e8a23e`), `AddressSpaceComposition` as the result type, `SystemPlatform` retired |
+| `docs/v2/phase-7-status.md`, `v2-release-readiness.md`, `redundancy-interop-playbook.md`, `AdminUI-rebuild-plan.md` (banners) | present-tense claims about types that no longer exist | Dated "⚠️ Historical" banners naming the specific dead types. `v2-release-readiness.md`'s banner also flags that its `:41` "ACL enforcement Closed" row is false, while noting its unchecked GA exit criteria **are** still live. (`docs/StatusDashboard.md` already self-declares Superseded — left alone.) |
+| `docs/OpcUaServer.md` (`:14`, `:51`), `docs/README.md` (`:65`), `docs/drivers/OpcUaClient-Test-Fixture.md` (`:127`) | `WriteAlarmState`; `LdapUserAuthenticator` ×2; `RedundancyCoordinator` | `WriteAlarmCondition`; `LdapOpcUaUserAuthenticator`; `RedundancyStateActor` + `IRedundancyRoleView` |
+| `docs/Historian.md` | no mention of #491 or the provisioning gap | ⚠️ block added: continuous value capture is **code-complete but unproven in production**, with the wiring chain; plus the `EnsureTags`-skips-existing-tags gap |
+
+### 7.2 Recorded, NOT applied — needs a decision or a rewrite, not a line edit
+
+The three highest-priority items in this list were **bannered rather than rewritten** in this pass
+(cheap, stops the misleading, preserves the record) — the underlying rewrite is still owed. They now
+appear in §7.1 as well.
+
+| Priority | File | Problem |
+|---|---|---|
+| **1 (security-relevant)** | `docs/ReadWriteOperations.md:13,21` | **Bannered + struck through.** Claimed ACL enforcement via `WriteAuthzPolicy` + `AuthorizationGate` + `NodeScopeResolver` and that "a denied read never hits the driver". All four names have zero hits in `src/`; §3.1 shows there is no read-path ACL gate at all. **Still owed:** a proper §-rewrite against the real node-manager write gate. Same false claim at `docs/v2/v2-release-readiness.md:41` (bannered). |
+| **2** | `docs/IncrementalSync.md` | **Bannered.** Entire "Rebuild flow" (`:37-47`) built on non-production `GenericDriverNodeManager`; `:26-34` cites `sp_PublishGeneration`/`sp_ComputeGenerationDiff`, both retired stubs that `RAISERROR` (`20260715230637_V3Initial.StoredProcedures.cs:194`); `:31` cites `DraftRevisionToken` (0 hits); `:49-51` describes a `ScopeHint` no consumer reads. **Still owed:** rewrite around the deploy-artifact path, or archive to `docs/v1/`. |
+| **2** | `docs/AddressSpace.md` | **Bannered.** v2-era throughout: `:7,42` claim a single namespace (v3 has two); `:7,48,70` cite `Phase7Applier` + `GalaxyTagPlan` + a nonexistent file path; `:62-64` repeats the rediscovery claim. **Still owed:** rewrite §"Root folder" + §"NodeId scheme" against `V3NodeIds` / `AddressSpaceRealm`. |
+| 3 | 6 docs, ~20 citations | **`Phase7*` → `AddressSpace*`** rename (`40e8a23e`). Mostly mechanical, **except three that are not renames** and need the real member identified first: `Phase7CompositionResult` → **`AddressSpaceComposition`** (`AddressSpaceComposer.cs:13`, verified for this report); `Phase7Composer.ExtractTagFullName` → nearest live seam is `ScriptTagCatalog.ExtractFullNameFromTagConfig`; **`Phase7EngineComposer.RouteToHistorianAsync` is simply gone** — the real seam is `HistorianAdapterActor` → `IAlarmHistorianSink`. |
+| 3 | `docs/v2/driver-specs.md` | Covers 8 of 12 drivers (missing MQTT, MTConnect, Sql, Calculation, and the Modbus `Transport` selector) while `docs/drivers/README.md` calls it authoritative "for **every** driver". Either add four sections or downgrade the claim. |
+| 3 | `docs/v2/driver-stability.md:47-54` | Puts Galaxy and FOCAS in Tier C; `docs/drivers/README.md` says Tier A for both. **Moot at runtime** — see §3.3 — but the two docs contradict each other. |
+| 3 | `docs/drivers/Sql.md`, `docs/drivers/Calculation.md` | **Do not exist.** Sql is documented only in design/plan/research files; Calculation only at `docs/Raw.md:66-69`. |
+| — | `docs/operations/2026-07-16-secrets-clustered-master-key.md:38` | `NoOpSecretReplicator` exists **only** in a test. **Investigate before editing** — the sentence makes a security-relevant claim ("no built-in cross-node replication today"), so it needs the real behaviour identified, not a rename. Left untouched deliberately. |
+| — | `docs/v2/driver-specs.md` §2 | `docs/drivers/Modbus.md:10-11` points readers here for the Modbus config shape, and this file omits the `Transport` selector. Folded into the driver-specs item above. |
+
+---
+
+## 8. Recommended sequencing
+
+1. **§3.1 ACL enforcement** — decide: wire `IPermissionEvaluator` into `OtOpcUaNodeManager`, or
+   remove the authoring UI and say plainly that ACLs are not enforced. Either way fix
+   `docs/ReadWriteOperations.md` first; it is the one that could mislead a security review.
+2. **#518 + #507 together** — neither fix is observable alone.
+3. **#516** — silent config discard on 5 drivers; then re-scope #489, which it partly subsumes.
+4. **G-4** — extend the existing picker-parity test to `DriverConfigModal` + `DeviceModal`; it would
+   have caught G-1 and G-2 for free, and this class has now recurred twice.
+5. **Bookkeeping sweep** — mark the 8 stale `.tasks.json` files complete so the 19-task AdminUI plan
+   (§6.2) is visible as the real backlog it is.
+6. **§3.3 tier truth** — either pass real tiers at factory registration or delete the Tier-C
+   machinery; today it is documented, authorable and dormant.
+
+---
+
+*Generated 2026-07-27 against `master` @ `90bdaa44` by five parallel source-verification agents.
+Every `path:line` reference was read from source. Items marked CANNOT VERIFY require hardware, a
+VPN'd gateway, or a live rig and are listed as unproven rather than assumed.*