docs(archreview): add cross-plan parallelization map for incomplete tasks + sync stale PLAN-04 status

Corrects the Status Board (PLAN-04 24/26, not 0), and adds a Parallelization Map to
00-MASTER-TRACKER plus a per-plan Parallelization block to PLAN-04/05/06/07/08. Derives
ready sets from the live .tasks.json blockedBy graphs and the Files metadata, identifies
the initiative-wide serialization mutexes (ManagementActor.cs single-writer, EF migration
snapshot, Host/Program.cs, ArtifactDeploymentService.cs, SiteStorageService.cs,
NotificationOutboxActor.cs, AlarmSummary.razor), and recommends the safe concurrent
subagent lanes per plan. Flags PLAN-07 T33 as a dedupe-skip (CLI.Tests already in slnx).

archreview/plans/PLAN-08-conventions-tests.md

@@ -10,6 +10,15 @@
 
 **Build:** `dotnet build ZB.MOM.WW.ScadaBridge.slnx`. Tests: `dotnet test ZB.MOM.WW.ScadaBridge.slnx` — after Task 1 this picks up CLI.Tests too.
 
+## Parallelization (incomplete tasks) — 2026-07-09
+
+T1 complete. **Ready now** (`blockedBy` ⊆ {1}): **{2, 3, 4, 5, 7, 8, 9, 11}**.
+
+This is the **highest-parallelism slice in the initiative** — T2–T5 each create per-component options-validator files, and T7/T8/T9/T11 are isolated test/props/doc files, so they are **mutually parallel** and can run as many concurrent implementers at once, with a single caveat:
+- **`Host/Program.cs` mutex:** T4 edits `Program.cs` (shared with PLAN-06 T7) — sequence those two. (T3 edits `Host/SiteServiceRegistration.cs`, a *different* Host file — no conflict.)
+
+**Blocked:** T6 (`blockedBy` T3 — removes the vestigial site notification surface, shares the SiteRuntime project), T10 (`blockedBy` 1, 11 — docs-drift cleanup, touches `CLAUDE.md` + `ManagementService.csproj`, coordinate with T4 which also edits that csproj). See [00-MASTER-TRACKER.md § Parallelization Map](00-MASTER-TRACKER.md#parallelization-map--incomplete-tasks-2026-07-09).
+
 ## Findings Coverage
 
 | Report finding (08-conventions-tests-underdeveloped.md) | Severity | Coverage |