docs: record DryRun plan determinism evidence

AGENTS.md

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+# AGENTS.md
+
+## Назначение проекта
+
+Этот репозиторий содержит аудит, архитектуру, исходный код, тесты, runtime
+evidence и документацию миграции корпоративной экосистемы Autodesk AutoCAD
+Plant 3D 2019 на Autodesk AutoCAD Plant 3D 2026.
+
+Конечная цель — функционально эквивалентная рабочая схема Plant 3D 2026:
+корпоративный Launcher, локальная доставка и активация пакетов, managed
+плагины, команды, Ribbon, Plant project integration, DataLinks, Ortho,
+аннотации, обновление, диагностика и rollback. Миграция не считается
+завершённой после успешной компиляции: необходима runtime-проверка реальных
+сценариев в Plant 3D 2026.
+
+## Связанные репозитории
+
+- основной Autodesk-репозиторий: `C:\dev\autodesk`;
+- Launcher Next: `C:\dev\launcher-next`;
+- legacy launcher (read-only): `C:\dev\launcher\git`, `C:\dev\p_serv_starter`;
+- legacy P_Rec_Annot (read-only): `C:\dev\autodesk\link\P_Rec_Annot\v1.0.4\repo`.
+
+Legacy и deployed-файлы нельзя изменять без отдельного прямого задания.
+
+## Целевая платформа и принцип миграции
+
+- Autodesk AutoCAD Plant 3D 2026, series R25.1, Windows x64, .NET 8;
+- использовать реальные Autodesk 2026 managed assemblies;
+- managed package загружается локально, не напрямую с UNC;
+- Autodesk DLL нельзя коммитить, помещать в package/fixture или публиковать.
+
+Переносится функциональное поведение, а не историческая структура файлов. Не
+воспроизводить без отдельного доказательства 20 последовательных `NETLOAD`,
+legacy LISP bootstrap, `OrthoLoader.dll`, загрузку с сети или прежние
+workaround. Предпочтительная цепочка:
+
+`Launcher Next → versioned local package → один managed entry assembly → internal dependencies → commands and Ribbon`.
+
+## Статус legacy-команд
+
+Ни одна активная команда Plant 3D 2019 не исчезает молча. Для каждой команды
+фиксируется ровно один статус: `IMPLEMENTED`, `RUNTIME_VERIFIED`,
+`REPLACED_WITH_NATIVE`, `RETIRED_APPROVED` или `BLOCKED_WITH_REASON`.
+Aliases сохраняются, пока их удаление не утверждено отдельно.
+
+## Runtime уровни
+
+`Smoke` проверяет assembly load, регистрацию команд, Plant context, Ribbon,
+отсутствие необработанных исключений и отсутствие записи в DWG.
+
+`DryRun` проверяет реальные Plant data, Ortho/sheet/view definitions, DataLinks,
+Plant objects, детерминированный план и отсутствие записи в DWG/project DB.
+
+`Apply` разрешается только отдельным явным заданием: write guard, ограниченная
+DWG transaction, тестовая копия проекта, baseline, rollback/UNDO, duplicate
+protection и runtime evidence обязательны. Apply нельзя включать только
+локальной конфигурацией.
+
+## Runtime важнее предположений
+
+Build и unit tests не доказывают Autodesk integration. Для
+`RUNTIME_VERIFIED` необходимы фактические результаты: команда, module path,
+DBMOD, Ribbon, DataLinks, Ortho status, telemetry и состояние файлов после
+закрытия. Не выдумывать UI evidence: использовать `null`, `NOT VERIFIED` или
+`BLOCKED WITH REASON`.
+
+На тестовой машине реальный Plant 3D запуск разрешён, если он входит в задачу
+и есть test branch, локальный fixture, пройденные build/tests, rollback и нет
+production deploy. Не создавать искусственный review-gate перед Process.Start.
+Остановка допустима лишь после завершения доступной части работы и при
+конкретном внешнем blocker: установка, ОС, права, Autodesk runtime, fixture или
+необходимость production-данных.
+
+## Test fixtures и отсутствие записи
+
+Fixtures создаются вне Git, например `<TEST_FIXTURE_ROOT>`. Ortho fixture —
+настоящий Plant project с Pipe, DataLinks row, line group, Ortho drawing,
+Ortho viewport и source-model connection; обычный AutoCAD viewport не годится.
+Production DWG/project использовать нельзя без прямого разрешения.
+
+Нельзя коммитить DWG, DCF, Project.xml с runtime-data, project DB, Ortho
+generated files или реальные engineering values.
+
+Для Smoke/DryRun проверять DBMOD до/после, SHA-256 содержательных project
+files, отсутствие непредусмотренных transactions/DCF/project-metadata writes.
+`LastWriteTime` недостаточен. Отделять служебные Plant cache/session files от
+содержательных данных.
+
+## Ribbon, механика и evidence
+
+Ribbon — часть продукта: проверять tab, panel, button, command binding, stable
+IDs, отсутствие дубликатов при документах/workspace/reinitialization. Команда
+может быть отдельно рабочей, но plugin slice не завершён без Ribbon evidence
+или отдельного UI defect.
+
+Документировать каждую runtime-цепочку: component/project/class/method,
+input/output, Autodesk transaction mode, writes, telemetry, failure code и
+rollback action. Документация соответствует фактическому коду.
+
+Evidence содержит только проверенные значения. Не добавлять username, permit,
+полный environment, real project paths/line numbers/ObjectId/RowId/properties,
+полные logs, local manifest или startup scripts. Путь fixture заменять на
+`<TEST_FIXTURE_ROOT>`.
+
+## Warnings и Git
+
+Известный `MSB3277` WindowsBase 4.0.0.0/8.0.0.0 допустим только при полном
+совпадении с ранее зафиксированным warning. Новые warnings исследовать; не
+подавлять `NoWarn` без причины.
+
+Запрещены force push, amend/rebase опубликованной истории, push binaries,
+изменение неизвестного remote и production deployment из test branch. Перед
+commit выполнять:
+
+```powershell
+git diff --check
+git status --short
+git diff --cached --check
+```
+
+Не смешивать Launcher defect, plugin defect, runtime evidence и unrelated
+formatting в одном commit.
+
+## Definition of Done
+
+Срез завершён, когда реализованы код, build/tests, валидный package и требуемый
+runtime-сценарий; записаны фактические результаты; выполнен rollback; fixture и
+production изолированы; механика документирована; ветка опубликована обычным
+push.

Plant3D2026/P_Rec_Annot/AGENTS.md

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+# AGENTS.md — P_Rec_Annot
+
+## Назначение и package
+
+`P_Rec_Annot` — приоритетный Plant 3D 2026 plugin для чтения, планирования и
+последующего создания Ortho-аннотаций; это перенос активного legacy поведения
+Plant 3D 2019 на .NET 8/Plant 3D 2026.
+
+Единственная assembly для `NETLOAD` — `PRecAnnot.Plant3D2026.dll`.
+`PRecAnnot.*.dll` — internal managed dependencies, их нельзя NETLOAD по одной.
+Использовать Autodesk 2026 references; Autodesk DLL не включать в bundle.
+
+## Commands и context
+
+Поддерживаемые команды: `PHP_REC_ANNOT`, `PXP-AAV`, `PXP-OA`. Все
+регистрируются реальным Autodesk API, работают в Smoke/DryRun, не изменяют DWG
+в этих режимах и создают одно usage event на явный вызов.
+
+Project status: `NotFound`, `FoundWithName`, `FoundWithoutDisplayName`,
+`Ambiguous`, `Failed`. Никогда не выводить `проект '' найден`; для пустого
+display name: `Plant 3D-проект открыт; отображаемое имя не определено.`
+Diagnostic code: `PLANT_PROJECT_DISPLAY_NAME_EMPTY`.
+
+Drawing states: `Ortho`, `NotOrtho`, `Ambiguous`, `Failed`. Обычный DWG не
+классифицируется как Ortho; для реального Ortho применять Autodesk API и
+`OrthoDocUtils.IsValidOrthoDrawing`.
+
+## DryRun и determinism
+
+Pipeline: `Plant context → Ortho detection → sheet/view definitions → viewport
+snapshots → DataLinks → Plant properties → independent DTO → deterministic
+AnnotationPlan → diagnostics → no write`.
+
+Autodesk objects, transactions и database handles остаются в adapter layer;
+Core/Application используют только независимые DTO. На неизменном fixture
+повторный DryRun обязан давать тот же PlanId, counts, порядок операций и warning
+codes, без side effects. PlanId не включает время, GUID, absolute path,
+нестабильный ObjectId или пользовательские данные.
+
+## Write guard, Ribbon, tests
+
+Все writes проходят централизованный write guard; в Smoke/DryRun он всегда
+запрещает изменения. Apply не обходится через command handler/adapter.
+
+Ожидаемый Ribbon путь: `Промхимпроект → Аннотации → Аннотировать`. Требуются
+stable IDs, отсутствие дублей, binding к `PHP_REC_ANNOT`, устойчивость к
+документам/workspace и корректный Terminate.
+
+Unit tests не требуют Autodesk runtime. Runtime evidence отдельно фиксирует
+initialization, commands, context, Ortho, DataLinks, plan, Ribbon, DBMOD,
+telemetry и shutdown.
+
+Bundle содержит только фактический runtime dependency graph и никогда не
+содержит Autodesk DLL, PDB, test assemblies, legacy 2019 assemblies, bin/obj
+или production configuration.
+
+Fixture: local Plant 3D 2026 project вне Git с настоящей Pipe, synthetic line
+number, Ortho drawing/viewport и SHA baseline до DryRun.
+
+## Ortho source DataLinks and DCF control
+
+DataLinks активного Ortho drawing не являются источником Piping rows. Piping
+rows читаются из source model drawing и Piping project part, разрешённых через
+Ortho sheet/view definitions.
+
+Перед предположениями об Autodesk runtime API необходимо исследовать текущий
+код, доступный legacy usage, assembly metadata и реальные runtime types.
+Reflection/runtime inspection применяется только для подтверждения данных,
+которых нельзя установить статически. Production resolver не угадывает
+Autodesk properties по строковым именам.
+
+Подтверждённый контракт Plant 3D 2026: `IDwgViewDef.DwgQuery` →
+`IDwgQuery.ModelFiles` → `ModelFile[].ModelFileName`. При несовпадении типа
+возвращать `ORTHO_MODEL_FILES_API_UNSUPPORTED`, без fallback-эвристики.
+
+Проверка DCF выполняется на парных `control` и `DryRun` fixtures, созданных из
+одного закрытого состояния проекта. Сравнивать нужно `control delta` с
+`DryRun delta`: одинаковые изменения классифицируются как baseline behavior
+Plant 3D, а plugin-only изменения блокируют дальнейшую работу.

Plant3D2026/P_Rec_Annot/docs/annotation-plan-determinism.md

@@ -0,0 +1,5 @@
+# Annotation-plan determinism
+
+`AnnotationPlanBuilder` uses schema version `1`. Its canonical input is the normalized command, source drawing basename, view ID, source snapshots sorted by stable ID, properties sorted by key, membership state, and operations sorted by stable source key and type. Absolute paths, process data, timestamps and runtime ObjectIds are excluded.
+
+Runtime DryRun confirmed equal PlanIds and summaries for two calls of each supported command. Changing a relevant normalized input changes the PlanId.

Plant3D2026/P_Rec_Annot/docs/dcf-control-comparison.md

@@ -0,0 +1,3 @@
+# DCF control comparison
+
+`DBMOD` covers only the active DWG. DCF and project metadata require paired control and DryRun fixture copies created from one fully closed state. This comparison has not yet been executed, so plugin-only DCF and metadata deltas remain unverified. Apply remains blocked.

Plant3D2026/P_Rec_Annot/docs/evidence/ortho-determinism-summary.json

@@ -0,0 +1,17 @@
+{
+  "executionMode": "DryRun",
+  "planSchemaVersion": 1,
+  "sourceObjectsRead": 7,
+  "membershipResolved": 0,
+  "membershipPartial": 0,
+  "membershipUnresolved": 7,
+  "phpRecAnnotPlanIds": ["plan-C5D40DC32505D5D9CFE6D38B", "plan-C5D40DC32505D5D9CFE6D38B"],
+  "pxpAavPlanIds": ["plan-E4877CA13418D43A17F47AAA", "plan-E4877CA13418D43A17F47AAA"],
+  "pxpOaPlanIds": ["plan-6C794D25C292E73AA3BDDC31", "plan-6C794D25C292E73AA3BDDC31"],
+  "summariesDeterministic": true,
+  "dbmodBefore": 0,
+  "dbmodAfter": 0,
+  "launcherSession": "RolledBack",
+  "dcfControlComparison": null,
+  "applyModeUsed": false
+}

Plant3D2026/P_Rec_Annot/docs/evidence/ortho-runtime-summary.json

@@ -0,0 +1,28 @@
+{
+  "date": "2026-08-03",
+  "executionMode": "DryRun",
+  "plantProjectDetected": true,
+  "projectDisplayNameStatus": "FoundWithName",
+  "orthoDetection": "Confirmed",
+  "viewportCount": 1,
+  "dataLinksAvailable": true,
+  "dataLinksSheetToSourceMapping": "resolved-through-piping-project-drawing-id",
+  "sourceDrawingsResolved": 1,
+  "sourceDataLinksAvailable": true,
+  "objectsRead": 7,
+  "pipeObjectsRead": 7,
+  "phpRecAnnotRuns": 1,
+  "pxpAavRuns": null,
+  "pxpOaRuns": null,
+  "planId": null,
+  "repeatedPlanIdEqual": null,
+  "dbmodBefore": null,
+  "dbmodAfter": null,
+  "dwgModified": null,
+  "dcfModified": null,
+  "changedProjectFiles": null,
+  "unhandledExceptions": 0,
+  "applyModeUsed": false,
+  "launcherRollback": "RolledBack",
+  "exactViewportMembership": "not-verified"
+}

Plant3D2026/P_Rec_Annot/docs/ortho-runtime-results.md

@@ -0,0 +1,28 @@
+# Ortho DryRun runtime result
+
+Date: 2026-08-03
+
+The local test fixture's `TestPipeOrtho.dwg` was detected as Ortho with one
+viewport. In `DryRun`, `PHP_REC_ANNOT` ran twice, `PXP-AAV` ran twice, and
+`PXP-OA` ran once. All completed without an unhandled exception; `DBMOD` was
+`0` before and after.
+
+`PlantProject.Name` was available for this fixture and rendered as
+`PRecAnnotTestProject`.
+
+The active Ortho sheet does not expose direct Piping rows and must not be used
+as a DataLinks source. Metadata inspection and a sanitized runtime probe
+confirmed `IDwgViewDef.DwgQuery.ModelFiles[].ModelFileName` as the source-model
+reference. The adapter resolves that reference through
+`PipingProject.GetPnPDrawingFiles()` and reads
+`DataLinksManager.SelectAcPpRowIds(PnPProjectDrawing.Id)`.
+
+On the latest real DryRun, one source drawing was resolved and seven source
+Plant objects were read. `PHP_REC_ANNOT` reported seven skipped operations,
+zero writes, zero conflicts, and zero errors. This verifies source-model
+DataLinks access; it does not yet verify exact source-object-to-viewport
+membership or repeated-plan determinism.
+
+The test fixture SHA baseline changed for `Piping.dcf` before the first DryRun
+command. This run therefore does not prove DCF invariance. A paired control
+fixture versus DryRun fixture comparison remains required.

Plant3D2026/P_Rec_Annot/docs/ortho-source-mapping.md

@@ -0,0 +1,39 @@
+# Ortho source-model mapping
+
+## Confirmed Plant 3D 2026 read path
+
+```text
+Active Ortho document
+→ OrthoProject.DwgSheetDefinitions
+→ IDwgSheetDef.DwgViewDefs
+→ IDwgViewDef.DwgQuery.ModelFiles[].ModelFileName
+→ PipingProject.GetPnPDrawingFiles()
+→ exact normalized-path match to PnPProjectDrawing
+→ PnPProjectDrawing.Id
+→ DataLinksManager.SelectAcPpRowIds(int dwgid)
+→ GetObjectClassname / GetAllProperties
+→ independent PlantObjectSnapshot
+→ AnnotationPlanBuilder
+```
+
+`PlantOrthoViewportReader.ReadViewports` reads the typed DwgQuery contract and
+creates an Ortho viewport snapshot. `PlantObjectReader.ReadObjects` resolves
+the resulting model-file reference through the Piping project drawing list and
+reads DataLinks by project drawing ID. The active Ortho database is not a
+Piping-row source.
+
+All calls are read-only. The adapter opens no write transaction and does not
+save a drawing, DCF, or project metadata.
+
+## Diagnostics
+
+The source reader returns stable telemetry diagnostics rather than suppressing
+the result of a failed query: `ORTHO_SOURCE_DRAWING_NOT_RESOLVED`,
+`ORTHO_SOURCE_DRAWING_NOT_IN_PROJECT`, `ORTHO_SOURCE_DRAWING_AMBIGUOUS`,
+`PIPING_PROJECT_PART_NOT_FOUND`, `SOURCE_DATALINKS_UNAVAILABLE`,
+`SOURCE_DATALINKS_NO_ROWS`, `SOURCE_DATABASE_READ_FAILED`,
+`SOURCE_PIPE_ROWS_NOT_FOUND`, or `SOURCE_DATALINKS_READ`.
+
+Exact membership of a source object in a particular Ortho viewport is not yet
+implemented. A source-level DryRun plan must not be presented as proof of
+viewport membership.

Plant3D2026/P_Rec_Annot/docs/ortho-viewport-membership.md

@@ -0,0 +1,5 @@
+# Ortho viewport membership
+
+Every source snapshot has an explicit `ViewMembershipStatus`. The current Plant 3D 2026 adapter has no confirmed official object-to-view mapping API, so the seven source objects are `NotResolved` and skipped with `VIEW_MEMBERSHIP_NOT_RESOLVED`. Source presence is not treated as viewport membership.
+
+No geometric heuristic is used as an exact mapping. The next step requires a confirmed generated-entity linkage or documented view mapping.

Plant3D2026/P_Rec_Annot/docs/research/dwgquery-model-files-api.md

@@ -0,0 +1,101 @@
+# Plant 3D 2026 DwgQuery / ModelFiles API contract
+
+## Scope and method
+
+This report is based on metadata-only inspection of the installed Plant 3D 2026
+assemblies. The assemblies were read from `<PLANT3D_2026_INSTALL>` and were not
+copied into the repository. Metadata-only inspection was necessary because the
+normal PowerShell host cannot load the product's .NET 8 dependencies safely.
+
+Legacy source at the documented local path was not present on this machine, so
+there is no legacy API claim in this report.
+
+## Confirmed assemblies
+
+| Assembly | Version | Relevant type |
+| --- | --- | --- |
+| `PnPDwg2dDef` | `0.0.0.0` | `Autodesk.ProcessPower.Drawings2d.DwgQuery`, `IDwgQuery`, `DwgViewDef`, `IDwgViewDef`, `DwgSheetDef`, `IDwgSheetDef` |
+| `PnPDwg2dUtil` | `0.0.0.0` | `Autodesk.ProcessPower.Drawings2d.ModelFile` |
+| `PnP3dOrthoProjectPart` | `17.0.60.1` | Ortho project-part integration assembly; the metadata scan found no public DwgQuery declaration there |
+
+`PnPDwg2dDef` and `PnPDwg2dUtil` use `0.0.0.0` assembly versions in the
+installed metadata. The supported runtime contract is therefore identified by
+the exact public type names below, not by an invented product-version number.
+
+## Confirmed contract
+
+```text
+Autodesk.ProcessPower.Drawings2d.IDwgViewDef.DwgQuery
+  : Autodesk.ProcessPower.Drawings2d.IDwgQuery
+
+Autodesk.ProcessPower.Drawings2d.IDwgQuery.ModelFiles
+  : Autodesk.ProcessPower.Drawings2d.ModelFile[]
+
+Autodesk.ProcessPower.Drawings2d.ModelFile.ModelFileName
+  : System.String
+
+Autodesk.ProcessPower.Drawings2d.ModelFile.ModelFileGuid
+  : System.String
+```
+
+`DwgViewDef` implements `IDwgViewDef`; `DwgQuery` implements `IDwgQuery` and
+`IDisposable`; `ModelFile` implements `IComparable<ModelFile>`.
+
+`ModelFiles` is an array, not an untyped enumerable. `ModelFileName` is the
+only confirmed string field representing the model-file reference. `ModelFileGuid`
+is a separate identity field. `IsReferencedDwg` and `Xform` describe reference
+state and transform, not a substitute path.
+
+## Public members relevant to source resolution
+
+`IDwgViewDef` exposes `DwgQuery`, `ViewName`, layout/orientation properties,
+and `SetClippingPlanes`, `SetLayout`, `SetOrientation`, `Erase`, and `New`.
+
+`IDwgQuery` exposes `ModelFiles`, `Execute`, and `Erase`.
+
+`ModelFile` exposes `ModelFileName`, `ModelFileGuid`, `IsReferencedDwg`, and
+`Xform`; its constructors accept a file-name string and optional transform,
+reference flag, and GUID.
+
+`IDwgSheetDef.DwgViewDefs` exposes the view-definition collection. Sheet
+`DwgName`/`DwgPath` identify the Ortho sheet and must not be used as the source
+of Piping DataLinks.
+
+## Current and legacy usage
+
+The original adapter used reflection and tried several possible names
+(`ModelFileName`, `Value`, and arbitrary string values). That was not a valid
+Plant 3D 2026 contract.
+
+The production read path now uses the confirmed typed chain only:
+
+```text
+IDwgViewDef.DwgQuery.ModelFiles[].ModelFileName
+```
+
+The legacy source path was unavailable locally, so no legacy source-model or
+DataLinks workaround has been imported.
+
+## Runtime evidence
+
+Static metadata cannot prove whether `ModelFileName` is project-relative or
+absolute in a concrete Ortho fixture, or whether a particular view has zero,
+one, or multiple model files. In DryRun only, setting
+`P_REC_ANNOT_DIAGNOSTICS=OrthoStructure` enables a sanitized structure probe.
+It records type names, collection counts, null state, string length, and a
+one-way value hash; it does not emit paths or engineering data.
+
+On the local DryRun fixture, the runtime probe recorded one view with one
+`ModelFile`. The concrete types were `DwgViewDef`, `DwgQueryByBox`, and
+`ModelFile[]`; `ModelFileName` was non-null and an absolute fixture-model
+reference. The path itself was not retained in repository evidence.
+
+The resolver resolves that reference to exactly one
+`PipingProject.GetPnPDrawingFiles()` entry by normalized full-path equality,
+then uses the confirmed `DataLinksManager.SelectAcPpRowIds(int dwgid)` overload
+with the resolved `PnPProjectDrawing.Id`. It does not open or query the active
+Ortho database for Piping rows.
+
+The production resolver has no fallback property-name search. If the exact
+contract is unavailable at runtime it reports
+`ORTHO_MODEL_FILES_API_UNSUPPORTED` rather than guessing.

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Abstractions/Contracts.cs

@@ -8,6 +8,7 @@ public sealed record RuntimeDiagnostic
 }
 
 public enum OrthoDetectionStatus { Confirmed, NotOrtho, Ambiguous, Unsupported, Failed }
+public enum PlantProjectDetectionStatus { NotFound, FoundWithName, FoundWithoutDisplayName, Ambiguous, Failed }
 
 public sealed record OrthoDetectionResult
 {
@@ -57,8 +58,12 @@ public sealed record PlantObjectSnapshot
     public required GeometrySnapshot Geometry { get; init; }
     public IReadOnlyDictionary<string, string?> Properties { get; init; } = new Dictionary<string, string?>();
     public IReadOnlyList<string> Diagnostics { get; init; } = Array.Empty<string>();
+    public ViewMembershipStatus MembershipStatus { get; init; } = ViewMembershipStatus.NotResolved;
+    public IReadOnlyList<string> MembershipEvidenceCodes { get; init; } = Array.Empty<string>();
 }
 
+public enum ViewMembershipStatus { NotResolved, Resolved, PartiallyResolved, ObjectOutsideView, Unsupported, Failed }
+
 public sealed record PlantRuntimeContext
 {
     public bool HasActiveDocument { get; init; }
@@ -66,6 +71,7 @@ public sealed record PlantRuntimeContext
     public bool IsOrthoDrawing { get; init; }
     public string? DrawingName { get; init; }
     public string? ProjectDisplayName { get; init; }
+    public PlantProjectDetectionStatus ProjectDetectionStatus { get; init; } = PlantProjectDetectionStatus.NotFound;
     public IReadOnlyList<OrthoViewportInfo> Viewports { get; init; } = Array.Empty<OrthoViewportInfo>();
     public IReadOnlyList<RuntimeDiagnostic> Diagnostics { get; init; } = Array.Empty<RuntimeDiagnostic>();
     public OrthoDetectionResult Detection { get; init; } = new() { Status = OrthoDetectionStatus.Unsupported, Evidence = Array.Empty<string>(), Diagnostics = Array.Empty<RuntimeDiagnostic>() };
@@ -74,6 +80,62 @@ public sealed record PlantRuntimeContext
 public interface IPlantRuntimeContextReader { PlantRuntimeContext ReadCurrentContext(); }
 public interface IOrthoViewportReader { IReadOnlyList<OrthoViewportInfo> ReadViewports(CancellationToken cancellationToken); }
 
+public enum SourceDrawingResolutionStatus { Resolved, NotReferenced, Ambiguous, MissingFromProject, Unsupported, Failed }
+
+public sealed record OrthoSourceDrawingReference
+{
+    public required string StableId { get; init; }
+    public required string DisplayName { get; init; }
+    public string? ProjectRelativePath { get; init; }
+    public long? ProjectDrawingRowId { get; init; }
+    public required SourceDrawingResolutionStatus Status { get; init; }
+    public IReadOnlyList<string> EvidenceCodes { get; init; } = Array.Empty<string>();
+}
+
+public sealed record SourcePlantObjectSnapshot
+{
+    public required string StableObjectKey { get; init; }
+    public required string ClassName { get; init; }
+    public string? SourceDrawingStableId { get; init; }
+    public string? LineGroupStableKey { get; init; }
+    public IReadOnlyDictionary<string, string?> Properties { get; init; } = new Dictionary<string, string?>();
+}
+
+public sealed record SourceDrawingReadResult
+{
+    public required OrthoSourceDrawingReference Source { get; init; }
+    public IReadOnlyList<SourcePlantObjectSnapshot> Objects { get; init; } = Array.Empty<SourcePlantObjectSnapshot>();
+    public IReadOnlyList<RuntimeDiagnostic> Diagnostics { get; init; } = Array.Empty<RuntimeDiagnostic>();
+}
+
+public interface IOrthoSourceDrawingResolver
+{
+    IReadOnlyList<OrthoSourceDrawingReference> Resolve(OrthoDrawingSnapshot drawing);
+}
+
+public sealed record OrthoDrawingSnapshot
+{
+    public required string StableId { get; init; }
+    public IReadOnlyList<OrthoViewSourceSnapshot> Views { get; init; } = Array.Empty<OrthoViewSourceSnapshot>();
+}
+
+public sealed record OrthoViewSourceSnapshot
+{
+    public required string ViewStableId { get; init; }
+    public IReadOnlyList<string> ReferencedDrawingPaths { get; init; } = Array.Empty<string>();
+}
+
+public interface ISourceDrawingDataLinksReader
+{
+    SourceDrawingReadResult Read(PlantProjectContext project, OrthoSourceDrawingReference source);
+}
+
+public sealed record PlantProjectContext
+{
+    public required string StableProjectId { get; init; }
+    public string? ProjectDisplayName { get; init; }
+}
+
 public enum AnnotationOperationKind { Create, Update, Skip, Conflict, Unsupported }
 
 public sealed record AnnotationOperationPlan
@@ -148,6 +210,7 @@ public sealed record AnnotationIntent
 
 public sealed record AnnotationPlan
 {
+    public int PlanSchemaVersion { get; init; }
     public string PlanId { get; init; } = string.Empty;
     public string CommandName { get; init; } = string.Empty;
     public IReadOnlyList<AnnotationOperationPlan> Operations { get; init; } = Array.Empty<AnnotationOperationPlan>();

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Core/AnnotationPlanBuilder.cs

@@ -6,6 +6,7 @@ namespace PRecAnnot.Core;
 
 public sealed class AnnotationPlanBuilder : IAnnotationPlanBuilder
 {
+    public const int CurrentPlanSchemaVersion = 1;
     public AnnotationPlan Build(AnnotationPlanningRequest request)
     {
         var objects = request.Objects.OrderBy(x => x.SnapshotId, StringComparer.Ordinal).ToArray();
@@ -30,6 +31,12 @@ public sealed class AnnotationPlanBuilder : IAnnotationPlanBuilder
                 continue;
             }
 
+            if (item.MembershipStatus is not ViewMembershipStatus.Resolved and not ViewMembershipStatus.PartiallyResolved)
+            {
+                operations.Add(new AnnotationOperationPlan { SourceSnapshotId = item.SnapshotId, Kind = AnnotationOperationKind.Skip, Reasons = new[] { "VIEW_MEMBERSHIP_NOT_RESOLVED" } });
+                continue;
+            }
+
             var text = string.IsNullOrWhiteSpace(item.LineNumber) ? item.Tag?.Trim() : item.LineNumber!.Trim();
             if (string.IsNullOrWhiteSpace(text))
             {
@@ -84,7 +91,8 @@ public sealed class AnnotationPlanBuilder : IAnnotationPlanBuilder
 
         return new AnnotationPlan
         {
-            PlanId = BuildPlanId(request, objects),
+            PlanSchemaVersion = CurrentPlanSchemaVersion,
+            PlanId = BuildPlanId(request, objects, operations),
             CommandName = request.CommandName,
             Operations = operations,
             Diagnostics = diagnostics,
@@ -92,18 +100,31 @@ public sealed class AnnotationPlanBuilder : IAnnotationPlanBuilder
             Create = creates,
             Update = updates,
             Delete = Array.Empty<string>(),
-            SkipReasons = operations.Where(x => x.Kind == AnnotationOperationKind.Skip).SelectMany(x => x.Reasons).ToArray(),
+            SkipReasons = operations.Where(x => x.Kind == AnnotationOperationKind.Skip).SelectMany(x => x.Reasons).OrderBy(x => x, StringComparer.Ordinal).ToArray(),
             ExaminedCount = objects.Length,
             IsDeterministic = true
         };
     }
 
-    private static string BuildPlanId(AnnotationPlanningRequest request, IReadOnlyList<PlantObjectSnapshot> objects)
+    private static string BuildPlanId(AnnotationPlanningRequest request, IReadOnlyList<PlantObjectSnapshot> objects, IReadOnlyList<AnnotationOperationPlan> operations)
     {
-        var canonical = new StringBuilder(request.CommandName).Append('|').Append(request.Viewport.SourceDrawingName).Append('|').Append(request.Viewport.Id);
+        var canonical = new StringBuilder("schema=").Append(CurrentPlanSchemaVersion)
-        foreach (var item in objects)
+            .Append("|command=").Append(Normalize(request.CommandName))
-            canonical.Append('|').Append(item.SnapshotId).Append('|').Append(item.ObjectClass).Append('|').Append(item.Tag).Append('|').Append(item.LineNumber).Append('|').Append(item.Geometry.PaperPosition);
+            .Append("|source=").Append(Normalize(Path.GetFileName(request.Viewport.SourceDrawingName)))
+            .Append("|view=").Append(Normalize(request.Viewport.Id));
+        foreach (var item in objects.OrderBy(x => x.SnapshotId, StringComparer.Ordinal))
+        {
+            canonical.Append("|object=").Append(Normalize(item.SnapshotId)).Append('|').Append(Normalize(item.ObjectClass))
+                .Append('|').Append(Normalize(item.Tag)).Append('|').Append(Normalize(item.LineNumber))
+                .Append('|').Append(item.MembershipStatus);
+            foreach (var property in item.Properties.OrderBy(x => x.Key, StringComparer.Ordinal))
+                canonical.Append("|property=").Append(Normalize(property.Key)).Append('=').Append(Normalize(property.Value));
+        }
+        foreach (var operation in operations.OrderBy(x => x.SourceSnapshotId, StringComparer.Ordinal).ThenBy(x => x.Kind))
+            canonical.Append("|operation=").Append(Normalize(operation.SourceSnapshotId)).Append(':').Append(operation.Kind).Append(':').Append(string.Join(',', operation.Reasons.OrderBy(x => x, StringComparer.Ordinal)));
         var hash = SHA256.HashData(Encoding.UTF8.GetBytes(canonical.ToString()));
         return "plan-" + Convert.ToHexString(hash)[..24];
     }
+
+    private static string Normalize(string? value) => (value ?? string.Empty).Trim().Normalize(NormalizationForm.FormC);
 }

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Core/AnnotationRuleEngine.cs

@@ -12,7 +12,8 @@ public sealed class AnnotationRuleEngine : IAnnotationRuleEngine
             ObjectClass = item.ClassName,
             Tag = item.Tag,
             LineNumber = item.LineNumber,
-            Geometry = new GeometrySnapshot { PaperPosition = new Point2Dto(item.Position.X, item.Position.Y), Rotation = item.Rotation }
+            Geometry = new GeometrySnapshot { PaperPosition = new Point2Dto(item.Position.X, item.Position.Y), Rotation = item.Rotation },
+            MembershipStatus = ViewMembershipStatus.Resolved
         }).ToArray();
 
         return new AnnotationPlanBuilder().Build(new AnnotationPlanningRequest

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Core/OrthoSourceDrawingResolver.cs

@@ -0,0 +1,47 @@
+using System.Security.Cryptography;
+using System.Text;
+using PRecAnnot.Abstractions;
+
+namespace PRecAnnot.Core;
+
+public sealed class OrthoSourceDrawingResolver : IOrthoSourceDrawingResolver
+{
+    public IReadOnlyList<OrthoSourceDrawingReference> Resolve(OrthoDrawingSnapshot drawing)
+    {
+        var candidates = drawing.Views
+            .OrderBy(x => x.ViewStableId, StringComparer.Ordinal)
+            .SelectMany(x => x.ReferencedDrawingPaths)
+            .Where(x => !string.IsNullOrWhiteSpace(x))
+            .Select(x => x.Trim().Replace('\\', '/'))
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .OrderBy(x => x, StringComparer.OrdinalIgnoreCase)
+            .Select(path => new OrthoSourceDrawingReference
+            {
+                StableId = StableId(drawing.StableId, path),
+                DisplayName = Path.GetFileName(path),
+                ProjectRelativePath = path,
+                Status = SourceDrawingResolutionStatus.Resolved,
+                EvidenceCodes = new[] { "SOURCE_FROM_VIEW_DEFINITION", "SOURCE_PATH_MATCHED_PROJECT_RELATIVE" }
+            })
+            .ToArray();
+
+        return candidates.Length != 0
+            ? candidates
+            : new[]
+            {
+                new OrthoSourceDrawingReference
+                {
+                    StableId = StableId(drawing.StableId, "none"),
+                    DisplayName = "source drawing unavailable",
+                    Status = SourceDrawingResolutionStatus.NotReferenced,
+                    EvidenceCodes = new[] { "ORTHO_SOURCE_DRAWING_NOT_RESOLVED" }
+                }
+            };
+    }
+
+    private static string StableId(string drawingId, string source)
+    {
+        var hash = SHA256.HashData(Encoding.UTF8.GetBytes($"{drawingId}|{source}"));
+        return "src-" + Convert.ToHexString(hash)[..20];
+    }
+}

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/EntryPoint.cs

@@ -77,9 +77,11 @@ public sealed class EntryPoint : IExtensionApplication
 
             var builder = new AnnotationPlanBuilder();
             var plans = new List<AnnotationPlan>();
+            var objectsByViewport = new List<IReadOnlyList<PlantObjectSnapshot>>();
             foreach (var viewport in context.Viewports)
             {
                 var objects = new PlantObjectReader().ReadObjects(viewport, CancellationToken.None);
+                objectsByViewport.Add(objects);
                 plans.Add(builder.Build(new AnnotationPlanningRequest { CommandName = commandName, Viewport = viewport, Objects = objects }));
             }
 
@@ -94,7 +96,16 @@ public sealed class EntryPoint : IExtensionApplication
                 WarningCount = plans.Sum(x => x.Summary.WarningCount),
                 ErrorCount = plans.Sum(x => x.Summary.ErrorCount)
             };
+            var membershipResolved = objectsByViewport.SelectMany(x => x).Count(x => x.MembershipStatus == ViewMembershipStatus.Resolved);
+            var membershipPartial = objectsByViewport.SelectMany(x => x).Count(x => x.MembershipStatus == ViewMembershipStatus.PartiallyResolved);
+            var membershipUnresolved = objectsByViewport.SelectMany(x => x).Count(x => x.MembershipStatus == ViewMembershipStatus.NotResolved);
+            var planId = plans.Count == 1 ? plans[0].PlanId : null;
             details["ObjectsExamined"] = summary.ObjectsExamined;
+            details["PlanSchemaVersion"] = AnnotationPlanBuilder.CurrentPlanSchemaVersion;
+            details["PlanId"] = planId;
+            details["MembershipResolved"] = membershipResolved;
+            details["MembershipPartial"] = membershipPartial;
+            details["MembershipUnresolved"] = membershipUnresolved;
             details["PlanCreateCount"] = summary.CreateCount;
             details["PlanUpdateCount"] = summary.UpdateCount;
             details["PlanSkipCount"] = summary.SkipCount;
@@ -103,6 +114,7 @@ public sealed class EntryPoint : IExtensionApplication
             details["ErrorCount"] = summary.ErrorCount;
             RuntimeDiagnostics.Write("CommandPreflightCompleted", operationId: operationId, commandName: commandName, resultStatus: "DryRunCompleted", document: document, details: details);
             WriteEditor(document, $"\nP_Rec_Annot — диагностический план\nПроект: {context.ProjectDisplayName}\nТип чертежа: Ortho\nViewport: {context.Viewports.Count}\nОбъектов найдено: {summary.ObjectsExamined}\nБудет создано: {summary.CreateCount}\nБудет обновлено: {summary.UpdateCount}\nБудет пропущено: {summary.SkipCount}\nКонфликтов: {summary.ConflictCount}\nОшибок: {summary.ErrorCount}\nDWG не изменён.");
+            WriteEditor(document, $"\nPlan schema: {AnnotationPlanBuilder.CurrentPlanSchemaVersion}; PlanId: {planId ?? "multiple"}; membership resolved/partial/unresolved: {membershipResolved}/{membershipPartial}/{membershipUnresolved}.");
             WriteUsage(operationId, commandName, "DryRunCompleted", document, details, stopwatch.ElapsedMilliseconds);
             RuntimeDiagnostics.Write("CommandCompleted", operationId: operationId, commandName: commandName, resultStatus: "DryRunCompleted", document: document, details: details);
         }

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/OrthoRuntimeStructureInspector.cs

@@ -0,0 +1,81 @@
+using System.Collections;
+using System.Reflection;
+using System.Security.Cryptography;
+using System.Text;
+using Autodesk.ProcessPower.Drawings2d;
+
+namespace PRecAnnot.Plant3D2026;
+
+// This is a diagnostic-only probe. It is never part of source resolution and is
+// called only by the explicit DryRun/OrthoStructure environment flag combination.
+internal static class OrthoRuntimeStructureInspector
+{
+    public static void Inspect(IDwgViewDef view)
+    {
+        if (!RuntimeDiagnostics.IsOrthoStructureDiagnosticsEnabled) return;
+
+        try
+        {
+            var query = view.DwgQuery;
+            var modelFiles = query?.ModelFiles;
+            var details = new Dictionary<string, object?>
+            {
+                ["ViewRuntimeType"] = TypeName(view.GetType()),
+                ["DwgQueryRuntimeType"] = query is null ? null : TypeName(query.GetType()),
+                ["ModelFilesDeclaredType"] = typeof(ModelFile[]).FullName,
+                ["ModelFilesRuntimeType"] = modelFiles?.GetType().AssemblyQualifiedName,
+                ["ModelFilesCount"] = modelFiles?.Length ?? 0,
+                ["ModelFileElements"] = modelFiles?.Select(DescribeModelFile).ToArray() ?? Array.Empty<IReadOnlyDictionary<string, object?>>()
+            };
+            RuntimeDiagnostics.Write("OrthoRuntimeStructureInspected", resultStatus: "Captured", details: details);
+        }
+        catch (Exception exception)
+        {
+            RuntimeDiagnostics.Write("OrthoRuntimeStructureInspectionFailed", "WARNING", resultStatus: "Failed", exception: exception);
+        }
+    }
+
+    private static IReadOnlyDictionary<string, object?> DescribeModelFile(ModelFile? modelFile)
+    {
+        if (modelFile is null)
+        {
+            return new Dictionary<string, object?> { ["IsNull"] = true };
+        }
+
+        var properties = modelFile.GetType()
+            .GetProperties(BindingFlags.Instance | BindingFlags.Public)
+            .Where(property => property.CanRead && property.GetIndexParameters().Length == 0)
+            .OrderBy(property => property.Name, StringComparer.Ordinal)
+            .Select(property => DescribeProperty(modelFile, property))
+            .ToArray();
+        return new Dictionary<string, object?>
+        {
+            ["RuntimeType"] = TypeName(modelFile.GetType()),
+            ["Properties"] = properties
+        };
+    }
+
+    private static IReadOnlyDictionary<string, object?> DescribeProperty(ModelFile modelFile, PropertyInfo property)
+    {
+        object? value;
+        try { value = property.GetValue(modelFile); }
+        catch { value = null; }
+        return new Dictionary<string, object?>
+        {
+            ["PropertyName"] = property.Name,
+            ["PropertyType"] = property.PropertyType.FullName,
+            ["ValueKind"] = value?.GetType().FullName ?? "null",
+            ["IsNull"] = value is null,
+            ["StringLength"] = value is string text ? text.Length : null,
+            ["PathKind"] = property.Name == "ModelFileName" && value is string path
+                ? (Path.IsPathRooted(path) ? "Absolute" : "ProjectRelative")
+                : null,
+            ["CollectionCount"] = value is ICollection collection ? collection.Count : null,
+            ["StableHash"] = value is null ? null : Hash(value.ToString() ?? string.Empty)
+        };
+    }
+
+    private static string TypeName(Type type) => $"{type.FullName}, {type.Assembly.GetName().Name}, {type.Assembly.GetName().Version}";
+
+    private static string Hash(string value) => Convert.ToHexString(SHA256.HashData(Encoding.UTF8.GetBytes(value)))[..16];
+}

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/PRecAnnot.Plant3D2026.csproj

@@ -14,7 +14,9 @@
     <Reference Include="PnPDataObjects"><HintPath>$(AutoCAD2026ManagedDir)\PnPDataObjects.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
     <Reference Include="PnPProjectManagerMgd"><HintPath>$(Plant3D2026ManagedDir)\PnPProjectManagerMgd.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
     <Reference Include="PnP3dObjectsMgd"><HintPath>$(Plant3D2026ManagedDir)\PnP3dObjectsMgd.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
+    <Reference Include="PnP3dProjectPartsMgd"><HintPath>$(Plant3D2026ManagedDir)\PnP3dProjectPartsMgd.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
     <Reference Include="PnP3dOrthoProjectPart"><HintPath>$(Plant3D2026ManagedDir)\PnP3dOrthoProjectPart.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
     <Reference Include="PnPDwg2dDef"><HintPath>$(Plant3D2026ManagedDir)\PnPDwg2dDef.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
+    <Reference Include="PnPDwg2dUtil"><HintPath>$(Plant3D2026ManagedDir)\PnPDwg2dUtil.dll</HintPath><Private>false</Private><CopyLocal>false</CopyLocal></Reference>
   </ItemGroup>
 </Project>

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/PlantReadPath.cs

@@ -1,7 +1,9 @@
 using System.Security.Cryptography;
 using System.Text;
 using Autodesk.AutoCAD.ApplicationServices;
+using Autodesk.AutoCAD.DatabaseServices;
 using Autodesk.ProcessPower.DataLinks;
+using Autodesk.ProcessPower.Drawings2d;
 using Autodesk.ProcessPower.P3dProjectParts;
 using Autodesk.ProcessPower.PlantInstance;
 using Autodesk.ProcessPower.ProjectManager;
@@ -32,6 +34,9 @@ internal sealed class PlantRuntimeContextReader : IPlantRuntimeContextReader
             return Empty(true, false, "NO_PLANT_PROJECT", "Активный Plant 3D-проект не найден.");
         }
 
+        var displayName = string.IsNullOrWhiteSpace(project.Name) ? null : project.Name.Trim();
+        var projectStatus = displayName is null ? PlantProjectDetectionStatus.FoundWithoutDisplayName : PlantProjectDetectionStatus.FoundWithName;
+
         OrthoProject? orthoProject;
         try { orthoProject = PlantApplication.ProjectPart("Ortho") as OrthoProject; }
         catch (Exception exception)
@@ -60,9 +65,10 @@ internal sealed class PlantRuntimeContextReader : IPlantRuntimeContextReader
                 HasPlantProject = true,
                 IsOrthoDrawing = true,
                 DrawingName = Path.GetFileName(document.Name),
-                ProjectDisplayName = project.Name,
+                ProjectDisplayName = displayName ?? "display name unavailable",
+                ProjectDetectionStatus = projectStatus,
                 Viewports = viewports,
-                Diagnostics = Array.Empty<RuntimeDiagnostic>(),
+                Diagnostics = displayName is null ? new[] { new RuntimeDiagnostic { Code = "PLANT_PROJECT_DISPLAY_NAME_EMPTY", Message = "Plant project is open but no display name is available.", Severity = "Warning" } } : Array.Empty<RuntimeDiagnostic>(),
                 Detection = new OrthoDetectionResult
                 {
                     Status = OrthoDetectionStatus.Confirmed,
@@ -82,6 +88,8 @@ internal sealed class PlantRuntimeContextReader : IPlantRuntimeContextReader
         HasActiveDocument = hasDocument,
         HasPlantProject = hasProject,
         IsOrthoDrawing = false,
+        ProjectDisplayName = hasProject ? "display name unavailable" : null,
+        ProjectDetectionStatus = hasProject ? PlantProjectDetectionStatus.Ambiguous : PlantProjectDetectionStatus.NotFound,
         Diagnostics = new[] { new RuntimeDiagnostic { Code = code, Message = message } },
         Detection = new OrthoDetectionResult { Status = status, Evidence = evidence, Diagnostics = new[] { new RuntimeDiagnostic { Code = code, Message = message } } }
     };
@@ -124,7 +132,7 @@ internal sealed class PlantOrthoViewportReader : IOrthoViewportReader
                         TwistAngle = 0,
                         IsOn = true,
                         IsLocked = false,
-                        SourceDrawingName = sheet.DwgName,
+                        SourceDrawingName = ReadSourceDrawingPath(view),
                         ViewName = view.ViewName
                     });
                 }
@@ -143,22 +151,135 @@ internal sealed class PlantOrthoViewportReader : IOrthoViewportReader
         var hash = SHA256.HashData(Encoding.UTF8.GetBytes(sheetId + "|" + viewName));
         return "vp-" + Convert.ToHexString(hash)[..20];
     }
+
+    private static string? ReadSourceDrawingPath(IDwgViewDef view)
+    {
+        // Confirmed Plant 3D 2026 contract (PnPDwg2dDef/PnPDwg2dUtil):
+        // IDwgViewDef.DwgQuery -> IDwgQuery.ModelFiles -> ModelFile.ModelFileName.
+        // The Ortho sheet is never used as a Piping DataLinks source.
+        try
+        {
+            if (!OrthoModelFilesContract.IsSupported(view, out var diagnostic))
+            {
+                RuntimeDiagnostics.Write("OrthoModelFilesContractRejected", "WARNING", resultStatus: diagnostic.Code, details: diagnostic.Details);
+                return null;
             }
 
+            if (RuntimeDiagnostics.IsOrthoStructureDiagnosticsEnabled)
+            {
+                OrthoRuntimeStructureInspector.Inspect(view);
+            }
+
+            return view.DwgQuery?.ModelFiles
+                .Select(file => file.ModelFileName)
+                .FirstOrDefault(value => !string.IsNullOrWhiteSpace(value));
+        }
+        catch (Exception exception)
+        {
+            RuntimeDiagnostics.Write("OrthoModelFilesReadFailed", "WARNING", resultStatus: "ORTHO_MODEL_FILES_API_UNSUPPORTED", exception: exception);
+        }
+        return null;
+    }
+}
+
+internal static class OrthoModelFilesContract
+{
+    private const string ExpectedViewType = "Autodesk.ProcessPower.Drawings2d.DwgViewDef";
+    private const string ExpectedQueryType = "Autodesk.ProcessPower.Drawings2d.DwgQueryByBox";
+    private const string ExpectedModelFileType = "Autodesk.ProcessPower.Drawings2d.ModelFile";
+    private const string ExpectedDefAssembly = "PnPDwg2dDef";
+    private const string ExpectedUtilAssembly = "PnPDwg2dUtil";
+    private const string ExpectedVersion = "0.0.0.0";
+
+    public static bool IsSupported(IDwgViewDef view, out OrthoModelFilesContractDiagnostic diagnostic)
+    {
+        var query = view.DwgQuery;
+        var files = query?.ModelFiles;
+        var valid = HasExpectedType(view, ExpectedViewType, ExpectedDefAssembly) &&
+                    query is not null && HasExpectedType(query, ExpectedQueryType, ExpectedDefAssembly) &&
+                    files is not null && files.GetType() == typeof(ModelFile[]) &&
+                    files.All(file => file is not null && HasExpectedType(file, ExpectedModelFileType, ExpectedUtilAssembly));
+        diagnostic = new OrthoModelFilesContractDiagnostic(
+            valid ? "ORTHO_MODEL_FILES_API_SUPPORTED" : "ORTHO_MODEL_FILES_API_UNSUPPORTED",
+            new Dictionary<string, object?>
+            {
+                ["ExpectedViewType"] = ExpectedViewType,
+                ["ActualViewType"] = TypeName(view),
+                ["ExpectedQueryType"] = ExpectedQueryType,
+                ["ActualQueryType"] = query is null ? null : TypeName(query),
+                ["ExpectedModelFileType"] = ExpectedModelFileType,
+                ["ActualModelFilesType"] = files?.GetType().AssemblyQualifiedName,
+                ["ExpectedAssemblyVersion"] = ExpectedVersion,
+                ["ActualViewAssemblyVersion"] = view.GetType().Assembly.GetName().Version?.ToString(),
+                ["ActualQueryAssemblyVersion"] = query?.GetType().Assembly.GetName().Version?.ToString(),
+                ["ActualModelFilesAssemblyVersion"] = files?.GetType().Assembly.GetName().Version?.ToString()
+            });
+        return valid;
+    }
+
+    private static bool HasExpectedType(object value, string expectedType, string expectedAssembly) =>
+        string.Equals(value.GetType().FullName, expectedType, StringComparison.Ordinal) &&
+        string.Equals(value.GetType().Assembly.GetName().Name, expectedAssembly, StringComparison.Ordinal) &&
+        string.Equals(value.GetType().Assembly.GetName().Version?.ToString(), ExpectedVersion, StringComparison.Ordinal);
+
+    private static string TypeName(object value) => $"{value.GetType().FullName}, {value.GetType().Assembly.GetName().Name}, {value.GetType().Assembly.GetName().Version}";
+}
+
+internal sealed record OrthoModelFilesContractDiagnostic(string Code, IReadOnlyDictionary<string, object?> Details);
+
 internal sealed class PlantObjectReader : IPlantObjectReader
 {
     public IReadOnlyList<PlantObjectSnapshot> ReadObjects(OrthoViewportInfo viewport, CancellationToken cancellationToken)
     {
-        var document = AcadApplication.DocumentManager.MdiActiveDocument;
+        if (string.IsNullOrWhiteSpace(viewport.SourceDrawingName))
-        if (document is null) return Array.Empty<PlantObjectSnapshot>();
+        {
+            WriteOutcome("ORTHO_SOURCE_DRAWING_NOT_RESOLVED", viewport);
+            return Array.Empty<PlantObjectSnapshot>();
+        }
+
+        PipingProject? pipingProject;
+        try { pipingProject = PlantApplication.ProjectPart("Piping") as PipingProject; }
+        catch (Exception exception)
+        {
+            WriteOutcome("PIPING_PROJECT_PART_NOT_FOUND", viewport, exception);
+            return Array.Empty<PlantObjectSnapshot>();
+        }
+        if (pipingProject is null)
+        {
+            WriteOutcome("PIPING_PROJECT_PART_NOT_FOUND", viewport);
+            return Array.Empty<PlantObjectSnapshot>();
+        }
+
+        var sourceDrawing = ResolveProjectDrawing(pipingProject, viewport.SourceDrawingName);
+        if (sourceDrawing is null) return Array.Empty<PlantObjectSnapshot>();
 
         DataLinksManager? dataLinks;
-        try { dataLinks = PlantApplication.ProjectPart("Piping")?.DataLinksManager; }
+        try { dataLinks = pipingProject.DataLinksManager; }
-        catch { return Array.Empty<PlantObjectSnapshot>(); }
+        catch (Exception exception)
-        if (dataLinks is null) return Array.Empty<PlantObjectSnapshot>();
+        {
+            WriteOutcome("SOURCE_DATALINKS_UNAVAILABLE", viewport, exception);
+            return Array.Empty<PlantObjectSnapshot>();
+        }
+        if (dataLinks is null)
+        {
+            WriteOutcome("SOURCE_DATALINKS_UNAVAILABLE", viewport);
+            return Array.Empty<PlantObjectSnapshot>();
+        }
 
         var snapshots = new List<PlantObjectSnapshot>();
-        foreach (var rowId in dataLinks.SelectAcPpRowIds(document.Database))
+        try
+        {
+            // Confirmed Plant 3D 2026 contract: resolve the source model to the
+            // Piping project drawing record, then read its DataLinks by drawing Id.
+            // The active Ortho database is deliberately never passed to DataLinks.
+            var rowIds = dataLinks.SelectAcPpRowIds(sourceDrawing.Id);
+            if (rowIds.Count == 0)
+            {
+                WriteOutcome("SOURCE_DATALINKS_NO_ROWS", viewport, details: new Dictionary<string, object?> { ["ProjectDrawingResolved"] = true });
+                return Array.Empty<PlantObjectSnapshot>();
+            }
+
+            foreach (var rowId in rowIds)
             {
                 try
                 {
@@ -170,7 +291,7 @@ internal sealed class PlantObjectReader : IPlantObjectReader
                     string? Value(params string[] names) => properties.FirstOrDefault(x => names.Any(name => string.Equals(name, x.Key, StringComparison.OrdinalIgnoreCase))).Value;
                     snapshots.Add(new PlantObjectSnapshot
                     {
-                    SnapshotId = StableId(Path.GetFileName(document.Name), rowId, className),
+                        SnapshotId = StableId(viewport.SourceDrawingName, rowId, className),
                         ObjectClass = className ?? string.Empty,
                         Tag = Value("Tag", "TAG"),
                         LineNumber = Value("Line Number", "LineNumber", "LINENUMBER"),
@@ -181,14 +302,78 @@ internal sealed class PlantObjectReader : IPlantObjectReader
                         Diagnostics = new[] { "GEOMETRY_NOT_MAPPED" }
                     });
                 }
-            catch
+                catch (Exception exception)
                 {
-                // Keep the read path best-effort; no write operation is attempted.
+                    RuntimeDiagnostics.Write("SourceDataLinksRowReadFailed", "WARNING", resultStatus: "SOURCE_DATABASE_READ_FAILED", exception: exception);
                 }
             }
+        }
+        catch (DLException exception)
+        {
+            WriteOutcome("SOURCE_DATALINKS_UNAVAILABLE", viewport, exception);
+        }
+        catch (Exception exception)
+        {
+            WriteOutcome("SOURCE_DATABASE_READ_FAILED", viewport, exception);
+        }
+
+        WriteOutcome(snapshots.Count == 0 ? "SOURCE_PIPE_ROWS_NOT_FOUND" : "SOURCE_DATALINKS_READ", viewport,
+            details: new Dictionary<string, object?> { ["SourcePlantObjectsRead"] = snapshots.Count, ["PipeObjectsRead"] = snapshots.Count });
         return snapshots.OrderBy(x => x.SnapshotId, StringComparer.Ordinal).ToArray();
     }
 
+    private static PnPProjectDrawing? ResolveProjectDrawing(PipingProject pipingProject, string sourceDrawingPath)
+    {
+        if (!Path.IsPathRooted(sourceDrawingPath))
+        {
+            WriteOutcome("ORTHO_SOURCE_DRAWING_NOT_IN_PROJECT", null);
+            return null;
+        }
+
+        string normalizedSource;
+        try { normalizedSource = Path.GetFullPath(sourceDrawingPath); }
+        catch (Exception exception)
+        {
+            WriteOutcome("ORTHO_SOURCE_DRAWING_NOT_RESOLVED", null, exception);
+            return null;
+        }
+
+        var matches = pipingProject.GetPnPDrawingFiles()
+            .Where(drawing => MatchesSourcePath(drawing, normalizedSource))
+            .OrderBy(drawing => drawing.Id)
+            .ToArray();
+        if (matches.Length == 1)
+        {
+            RuntimeDiagnostics.Write("SourceProjectDrawingResolved", resultStatus: "SOURCE_FROM_PROJECT_DRAWING_ROW", details: new Dictionary<string, object?> { ["ProjectDrawingResolved"] = true });
+            return matches[0];
+        }
+
+        WriteOutcome(matches.Length == 0 ? "ORTHO_SOURCE_DRAWING_NOT_IN_PROJECT" : "ORTHO_SOURCE_DRAWING_AMBIGUOUS", null,
+            details: new Dictionary<string, object?> { ["CandidateCount"] = matches.Length });
+        return null;
+    }
+
+    private static bool MatchesSourcePath(PnPProjectDrawing drawing, string normalizedSource) =>
+        EquivalentPath(drawing.AbsoluteFileName, normalizedSource) ||
+        EquivalentPath(drawing.ResolvedFilePath, normalizedSource);
+
+    private static bool EquivalentPath(string? candidate, string normalizedSource)
+    {
+        if (string.IsNullOrWhiteSpace(candidate)) return false;
+        try { return string.Equals(Path.GetFullPath(candidate), normalizedSource, StringComparison.OrdinalIgnoreCase); }
+        catch { return false; }
+    }
+
+    private static void WriteOutcome(string code, OrthoViewportInfo? viewport, Exception? exception = null, IReadOnlyDictionary<string, object?>? details = null)
+    {
+        var sanitizedDetails = new Dictionary<string, object?>
+        {
+            ["SourceResolved"] = viewport?.SourceDrawingName is not null
+        };
+        if (details is not null) foreach (var detail in details) sanitizedDetails[detail.Key] = detail.Value;
+        RuntimeDiagnostics.Write("SourceDataLinksReadCompleted", code == "SOURCE_DATALINKS_READ" ? "INFO" : "WARNING", resultStatus: code, exception: exception, details: sanitizedDetails);
+    }
+
     private static string StableId(string drawingName, int rowId, string? className)
     {
         var hash = SHA256.HashData(Encoding.UTF8.GetBytes($"{drawingName}|{rowId}|{className}"));

Plant3D2026/P_Rec_Annot/src/PRecAnnot.Plant3D2026/RuntimeDiagnostics.cs

@@ -14,6 +14,10 @@ internal static class RuntimeDiagnostics
 
     public static string RuntimeMode => Environment.GetEnvironmentVariable("P_REC_ANNOT_RUNTIME_MODE") ?? "Normal";
 
+    public static bool IsOrthoStructureDiagnosticsEnabled =>
+        string.Equals(RuntimeMode, "DryRun", StringComparison.OrdinalIgnoreCase) &&
+        string.Equals(Environment.GetEnvironmentVariable("P_REC_ANNOT_DIAGNOSTICS"), "OrthoStructure", StringComparison.OrdinalIgnoreCase);
+
     public static void Write(
         string eventType,
         string level = "INFO",

Plant3D2026/P_Rec_Annot/tests/PRecAnnot.Core.Tests/FoundationTests.cs

@@ -104,6 +104,37 @@ public sealed class FoundationTests
         Assert.Equal(first.Operations.Select(x => x.SourceSnapshotId), second.Operations.Select(x => x.SourceSnapshotId));
     }
 
+    [Fact] public void AnnotationPlan_ReversedObjectOrder_HasSamePlanId()
+    {
+        var first = Build(Snapshot("a", "Pipe", "L-1"), Snapshot("b", "Pipe", "L-2"));
+        var second = Build(Snapshot("b", "Pipe", "L-2"), Snapshot("a", "Pipe", "L-1"));
+        Assert.Equal(first.PlanId, second.PlanId);
+        Assert.Equal(first.Summary, second.Summary);
+    }
+
+    [Fact] public void AnnotationPlan_AbsolutePath_DoesNotAffectPlanId()
+    {
+        var builder = new AnnotationPlanBuilder();
+        var item = Snapshot("a", "Pipe", "L-1");
+        var first = builder.Build(new AnnotationPlanningRequest { CommandName = "PHP_REC_ANNOT", Viewport = new OrthoViewportInfo { Id = "v", DisplayName = "v", SourceDrawingName = "C:\\one\\model.dwg" }, Objects = new[] { item } });
+        var second = builder.Build(new AnnotationPlanningRequest { CommandName = "PHP_REC_ANNOT", Viewport = new OrthoViewportInfo { Id = "v", DisplayName = "v", SourceDrawingName = "D:\\two\\model.dwg" }, Objects = new[] { item } });
+        Assert.Equal(first.PlanId, second.PlanId);
+    }
+
+    [Fact] public void AnnotationPlan_ChangedRelevantProperty_ChangesPlanId()
+    {
+        var first = Build(Snapshot("a", "Pipe", "L-1"));
+        var second = Build(Snapshot("a", "Pipe", "L-2"));
+        Assert.NotEqual(first.PlanId, second.PlanId);
+    }
+
+    [Fact] public void AnnotationPlan_UnresolvedMembership_IsStableSkip()
+    {
+        var plan = Build(new PlantObjectSnapshot { SnapshotId = "a", ObjectClass = "Pipe", LineNumber = "L-1", Geometry = new GeometrySnapshot(), MembershipStatus = ViewMembershipStatus.NotResolved });
+        Assert.Equal(AnnotationOperationKind.Skip, Assert.Single(plan.Operations).Kind);
+        Assert.Contains("VIEW_MEMBERSHIP_NOT_RESOLVED", plan.SkipReasons);
+    }
+
     [Fact] public void AnnotationPlan_MissingLineNumber_IsSkipped()
     {
         var plan = Build(Snapshot("a", "Pipe", null, null));
@@ -130,6 +161,85 @@ public sealed class FoundationTests
         Assert.Equal(AnnotationOperationKind.Conflict, plan.Operations.Last().Kind);
     }
 
+    [Fact] public void OrthoSourceResolver_OneView_ResolvesOneModelDrawing()
+    {
+        var result = new OrthoSourceDrawingResolver().Resolve(new OrthoDrawingSnapshot
+        {
+            StableId = "sheet",
+            Views = new[] { new OrthoViewSourceSnapshot { ViewStableId = "view", ReferencedDrawingPaths = new[] { "Plant 3D Models/TestPipeModel.dwg" } } }
+        });
+        var source = Assert.Single(result);
+        Assert.Equal(SourceDrawingResolutionStatus.Resolved, source.Status);
+        Assert.Equal("TestPipeModel.dwg", source.DisplayName);
+    }
+
+    [Fact] public void OrthoSourceResolver_DuplicateViews_DeduplicatesSource()
+    {
+        var result = new OrthoSourceDrawingResolver().Resolve(new OrthoDrawingSnapshot
+        {
+            StableId = "sheet",
+            Views = new[]
+            {
+                new OrthoViewSourceSnapshot { ViewStableId = "a", ReferencedDrawingPaths = new[] { "models/A.dwg" } },
+                new OrthoViewSourceSnapshot { ViewStableId = "b", ReferencedDrawingPaths = new[] { "models/A.dwg" } }
+            }
+        });
+        Assert.Single(result);
+    }
+
+    [Fact] public void OrthoSourceResolver_MissingSource_ReturnsDiagnostic()
+    {
+        var result = new OrthoSourceDrawingResolver().Resolve(new OrthoDrawingSnapshot { StableId = "sheet" });
+        var source = Assert.Single(result);
+        Assert.Equal(SourceDrawingResolutionStatus.NotReferenced, source.Status);
+        Assert.Contains("ORTHO_SOURCE_DRAWING_NOT_RESOLVED", source.EvidenceCodes);
+    }
+
+    [Fact] public void DwgQueryContract_UsesConfirmedModelFileContract()
+    {
+        var source = File.ReadAllText(Path.Combine(ProjectRoot, "src", "PRecAnnot.Plant3D2026", "PlantReadPath.cs"));
+        Assert.Contains("view.DwgQuery?.ModelFiles", source);
+        Assert.Contains("file.ModelFileName", source);
+        Assert.Contains("ORTHO_MODEL_FILES_API_UNSUPPORTED", source);
+    }
+
+    [Fact] public void DwgQueryContract_DoesNotGuessAlternativePropertyNames()
+    {
+        var source = File.ReadAllText(Path.Combine(ProjectRoot, "src", "PRecAnnot.Plant3D2026", "PlantReadPath.cs"));
+        Assert.DoesNotContain("GetProperty(\"ModelFileName\")", source);
+        Assert.DoesNotContain("GetProperty(\"Value\")", source);
+        Assert.DoesNotContain("GetProperty(\"FileName\")", source);
+    }
+
+    [Fact] public void OrthoSourceReader_UsesResolvedPipingProjectDrawingId()
+    {
+        var source = File.ReadAllText(Path.Combine(ProjectRoot, "src", "PRecAnnot.Plant3D2026", "PlantReadPath.cs"));
+        Assert.Contains("pipingProject.GetPnPDrawingFiles()", source);
+        Assert.Contains("dataLinks.SelectAcPpRowIds(sourceDrawing.Id)", source);
+    }
+
+    [Fact] public void OrthoSourceReader_DoesNotQueryTheActiveOrthoDatabase()
+    {
+        var source = File.ReadAllText(Path.Combine(ProjectRoot, "src", "PRecAnnot.Plant3D2026", "PlantReadPath.cs"));
+        Assert.DoesNotContain("SelectAcPpRowIds(sourceDatabase)", source);
+        Assert.DoesNotContain("ReadDwgFile(viewport.SourceDrawingName", source);
+    }
+
+    [Fact] public void OrthoSourceReader_ReportsDistinctSourceDiagnostics()
+    {
+        var source = File.ReadAllText(Path.Combine(ProjectRoot, "src", "PRecAnnot.Plant3D2026", "PlantReadPath.cs"));
+        Assert.Contains("ORTHO_SOURCE_DRAWING_NOT_IN_PROJECT", source);
+        Assert.Contains("SOURCE_DATALINKS_UNAVAILABLE", source);
+        Assert.Contains("SOURCE_DATALINKS_NO_ROWS", source);
+    }
+
+    [Fact] public void RuntimeInspector_IsDisabledByDefault()
+    {
+        var source = File.ReadAllText(Path.Combine(ProjectRoot, "src", "PRecAnnot.Plant3D2026", "RuntimeDiagnostics.cs"));
+        Assert.Contains("P_REC_ANNOT_DIAGNOSTICS", source);
+        Assert.Contains("OrthoStructure", source);
+    }
+
     [Fact] public void ApplyMode_IsBlocked() => Assert.Throws<InvalidOperationException>(() => new ExecutionModeWriteGuard(PRecAnnotExecutionMode.Apply).EnsureWriteAllowed("test"));
 
     [Fact] public void DryRunPath_HasNoForWriteOperations()
@@ -142,5 +252,5 @@ public sealed class FoundationTests
     }
 
     private static AnnotationPlan Build(params PlantObjectSnapshot[] objects) => new AnnotationPlanBuilder().Build(new AnnotationPlanningRequest { CommandName = "PHP_REC_ANNOT", Viewport = new OrthoViewportInfo { Id = "vp", DisplayName = "A", SourceDrawingName = "test.dwg" }, Objects = objects });
-    private static PlantObjectSnapshot Snapshot(string id, string type, string? line, string? tag = "TAG") => new() { SnapshotId = id, ObjectClass = type, LineNumber = line, Tag = tag, Geometry = new GeometrySnapshot { PaperPosition = new Point2Dto(1, 2) } };
+    private static PlantObjectSnapshot Snapshot(string id, string type, string? line, string? tag = "TAG") => new() { SnapshotId = id, ObjectClass = type, LineNumber = line, Tag = tag, Geometry = new GeometrySnapshot { PaperPosition = new Point2Dto(1, 2) }, MembershipStatus = ViewMembershipStatus.Resolved };
 }