Centralize structural command transactions

AGENTS.md

@@ -21,6 +21,9 @@ It must support circuits, device rows, project devices, drag-and-drop restructur
   `src/frontend/components/circuit-grid-*.ts` modules.
 - Critical multi-write commands use injected transaction repositories with real
   SQLite commit/rollback tests.
+- Structural command stores share
+  `src/db/repositories/project-command-transaction.persistence.ts` for the
+  atomic domain-write, revision and history transition boundary.
 - General Circuit, CircuitDeviceRow, CircuitList and DistributionBoard
   repositories expose only active reads. Runtime writes belong in typed command
   repositories; direct integration fixtures belong under `tests/support`.

docs/current-architecture.md

@@ -84,6 +84,13 @@ absteigend paginierte Revisions-Timeline ist ohne Befehls-Payloads über
 `GET /api/projects/:projectId/history/revisions` lesbar. Ein zentraler
 Dispatcher führt die nachfolgend beschriebenen typisierten Kommandos über
 öffentliche Command-, Undo- und Redo-Endpunkte aus.
+Die Identitäts-/Struktur-Stores für Circuit, CircuitDeviceRow,
+DistributionBoard, ProjectDevice sowie Geschoss/Raum verwenden dabei
+`project-command-transaction.persistence.ts` als gemeinsame äußere
+Transaktionsgrenze. Sie führt Fachänderung, Revisions-Append und
+History-Transition in fester Reihenfolge innerhalb derselben SQLite-Transaktion
+aus; die fachlichen Validierungs- und Inversenregeln bleiben im jeweiligen
+Store.
 `circuit-device-row.insert` und `circuit-device-row.delete` sind atomare
 Strukturkommandos. Beim Löschen wird die vollständige Zeile im inversen
 Kommando gesichert, sodass Undo dieselbe UUID und alle Fachwerte wiederherstellt.

docs/spec/07-implementation-phases-todo.md

@@ -346,6 +346,9 @@ Implemented foundation:
 - obsolete direct Circuit, CircuitDeviceRow, CircuitList, DistributionBoard and
   Project repository writes are removed; integration fixtures live under
   `tests/support` instead of production repositories
+- structural Circuit, CircuitDeviceRow, DistributionBoard, ProjectDevice and
+  project-location stores share one tested transaction wrapper for domain
+  mutation, revision append and history transition
 - the legacy consumer UI and application read/write endpoints are removed after verified data cutover
 - retained legacy rows are accessible only through explicit database upgrade tooling
 - project devices no longer persist duplicate legacy power, phase, cosPhi or remark fields

src/db/repositories/circuit-device-row-structure-project-command.repository.ts

@@ -21,8 +21,7 @@ import {
   assertCircuitDeviceRowReferencesInProject,
   toCircuitDeviceRowSnapshot,
 } from "./circuit-device-row-structure.persistence.js";
-import { applyProjectHistoryTransition } from "./project-history.persistence.js";
+import { executeProjectCommandTransaction } from "./project-command-transaction.persistence.js";
-import { appendProjectRevision } from "./project-revision.persistence.js";
 
 export class CircuitDeviceRowStructureProjectCommandRepository
   implements CircuitDeviceRowStructureProjectCommandStore
@@ -30,30 +29,17 @@ export class CircuitDeviceRowStructureProjectCommandRepository
   constructor(private readonly database: AppDatabase) {}
 
   execute(input: ExecuteCircuitDeviceRowStructureCommandInput) {
-    return this.database.transaction((tx) => {
+    return executeProjectCommandTransaction(
-      const inverse = this.applyCommand(
+      this.database,
+      input,
+      (tx) =>
+        this.applyCommand(
           tx,
           input.projectId,
           input.source,
           input.command
+        )
     );
-      const revision = appendProjectRevision(tx, {
-        projectId: input.projectId,
-        expectedRevision: input.expectedRevision,
-        source: input.source,
-        description: input.description,
-        actorId: input.actorId,
-        forward: input.command,
-        inverse,
-      });
-      applyProjectHistoryTransition(tx, {
-        projectId: input.projectId,
-        source: input.source,
-        recordedChangeSetId: revision.changeSetId,
-        targetChangeSetId: input.historyTargetChangeSetId,
-      });
-      return { revision, inverse };
-    });
   }
 
   private applyCommand(

src/db/repositories/circuit-structure-project-command.repository.ts

@@ -22,8 +22,7 @@ import {
   assertCircuitDeviceRowReferencesInProject,
   toCircuitDeviceRowSnapshot,
 } from "./circuit-device-row-structure.persistence.js";
-import { applyProjectHistoryTransition } from "./project-history.persistence.js";
+import { executeProjectCommandTransaction } from "./project-command-transaction.persistence.js";
-import { appendProjectRevision } from "./project-revision.persistence.js";
 
 export class CircuitStructureProjectCommandRepository
   implements CircuitStructureProjectCommandStore
@@ -31,30 +30,17 @@ export class CircuitStructureProjectCommandRepository
   constructor(private readonly database: AppDatabase) {}
 
   execute(input: ExecuteCircuitStructureCommandInput) {
-    return this.database.transaction((tx) => {
+    return executeProjectCommandTransaction(
-      const inverse = this.applyCommand(
+      this.database,
+      input,
+      (tx) =>
+        this.applyCommand(
           tx,
           input.projectId,
           input.source,
           input.command
+        )
     );
-      const revision = appendProjectRevision(tx, {
-        projectId: input.projectId,
-        expectedRevision: input.expectedRevision,
-        source: input.source,
-        description: input.description,
-        actorId: input.actorId,
-        forward: input.command,
-        inverse,
-      });
-      applyProjectHistoryTransition(tx, {
-        projectId: input.projectId,
-        source: input.source,
-        recordedChangeSetId: revision.changeSetId,
-        targetChangeSetId: input.historyTargetChangeSetId,
-      });
-      return { revision, inverse };
-    });
   }
 
   private applyCommand(

src/db/repositories/distribution-board-structure-project-command.repository.ts

@@ -19,8 +19,7 @@ import { circuitSections } from "../schema/circuit-sections.js";
 import { circuits } from "../schema/circuits.js";
 import { distributionBoards } from "../schema/distribution-boards.js";
 import { projects } from "../schema/projects.js";
-import { applyProjectHistoryTransition } from "./project-history.persistence.js";
+import { executeProjectCommandTransaction } from "./project-command-transaction.persistence.js";
-import { appendProjectRevision } from "./project-revision.persistence.js";
 
 export class DistributionBoardStructureProjectCommandRepository
   implements DistributionBoardStructureProjectCommandStore
@@ -28,29 +27,12 @@ export class DistributionBoardStructureProjectCommandRepository
   constructor(private readonly database: AppDatabase) {}
 
   execute(input: ExecuteDistributionBoardStructureCommandInput) {
-    return this.database.transaction((tx) => {
+    return executeProjectCommandTransaction(
-      const inverse = this.applyCommand(
+      this.database,
-        tx,
+      input,
-        input.projectId,
+      (tx) =>
-        input.command
+        this.applyCommand(tx, input.projectId, input.command)
     );
-      const revision = appendProjectRevision(tx, {
-        projectId: input.projectId,
-        expectedRevision: input.expectedRevision,
-        source: input.source,
-        description: input.description,
-        actorId: input.actorId,
-        forward: input.command,
-        inverse,
-      });
-      applyProjectHistoryTransition(tx, {
-        projectId: input.projectId,
-        source: input.source,
-        recordedChangeSetId: revision.changeSetId,
-        targetChangeSetId: input.historyTargetChangeSetId,
-      });
-      return { revision, inverse };
-    });
   }
 
   private applyCommand(

src/db/repositories/project-command-transaction.persistence.ts

@@ -0,0 +1,49 @@
+import type { SerializedProjectCommand } from "../../domain/models/project-command.model.js";
+import type {
+  AppendedProjectRevision,
+  ProjectRevisionSource,
+} from "../../domain/ports/project-revision.store.js";
+import type { AppDatabase } from "../database-context.js";
+import { applyProjectHistoryTransition } from "./project-history.persistence.js";
+import { appendProjectRevision } from "./project-revision.persistence.js";
+
+export interface ProjectCommandTransactionInput<
+  Command extends SerializedProjectCommand<unknown>,
+> {
+  projectId: string;
+  expectedRevision: number;
+  source: ProjectRevisionSource;
+  description?: string;
+  actorId?: string;
+  historyTargetChangeSetId?: string;
+  command: Command;
+}
+
+export function executeProjectCommandTransaction<
+  Command extends SerializedProjectCommand<unknown>,
+  Inverse extends SerializedProjectCommand<unknown>,
+>(
+  database: AppDatabase,
+  input: ProjectCommandTransactionInput<Command>,
+  applyCommand: (transaction: AppDatabase) => Inverse
+): { revision: AppendedProjectRevision; inverse: Inverse } {
+  return database.transaction((tx) => {
+    const inverse = applyCommand(tx);
+    const revision = appendProjectRevision(tx, {
+      projectId: input.projectId,
+      expectedRevision: input.expectedRevision,
+      source: input.source,
+      description: input.description,
+      actorId: input.actorId,
+      forward: input.command,
+      inverse,
+    });
+    applyProjectHistoryTransition(tx, {
+      projectId: input.projectId,
+      source: input.source,
+      recordedChangeSetId: revision.changeSetId,
+      targetChangeSetId: input.historyTargetChangeSetId,
+    });
+    return { revision, inverse };
+  });
+}

src/db/repositories/project-device-structure-project-command.repository.ts

@@ -27,8 +27,7 @@ import { circuits } from "../schema/circuits.js";
 import { projectDevices } from "../schema/project-devices.js";
 import { projects } from "../schema/projects.js";
 import { toCircuitDeviceRowSnapshot } from "./circuit-device-row-structure.persistence.js";
-import { applyProjectHistoryTransition } from "./project-history.persistence.js";
+import { executeProjectCommandTransaction } from "./project-command-transaction.persistence.js";
-import { appendProjectRevision } from "./project-revision.persistence.js";
 
 const circuitDeviceRowSnapshotFields = [
   "id",
@@ -60,30 +59,17 @@ export class ProjectDeviceStructureProjectCommandRepository
   constructor(private readonly database: AppDatabase) {}
 
   execute(input: ExecuteProjectDeviceStructureCommandInput) {
-    return this.database.transaction((tx) => {
+    return executeProjectCommandTransaction(
-      const inverse = this.applyCommand(
+      this.database,
+      input,
+      (tx) =>
+        this.applyCommand(
           tx,
           input.projectId,
           input.source,
           input.command
+        )
     );
-      const revision = appendProjectRevision(tx, {
-        projectId: input.projectId,
-        expectedRevision: input.expectedRevision,
-        source: input.source,
-        description: input.description,
-        actorId: input.actorId,
-        forward: input.command,
-        inverse,
-      });
-      applyProjectHistoryTransition(tx, {
-        projectId: input.projectId,
-        source: input.source,
-        recordedChangeSetId: revision.changeSetId,
-        targetChangeSetId: input.historyTargetChangeSetId,
-      });
-      return { revision, inverse };
-    });
   }
 
   private applyCommand(

src/db/repositories/project-location-structure-project-command.repository.ts

@@ -26,8 +26,7 @@ import { consumers } from "../schema/consumers.js";
 import { floors } from "../schema/floors.js";
 import { projects } from "../schema/projects.js";
 import { rooms } from "../schema/rooms.js";
-import { applyProjectHistoryTransition } from "./project-history.persistence.js";
+import { executeProjectCommandTransaction } from "./project-command-transaction.persistence.js";
-import { appendProjectRevision } from "./project-revision.persistence.js";
 
 export class ProjectLocationStructureProjectCommandRepository
   implements ProjectLocationStructureProjectCommandStore
@@ -35,29 +34,12 @@ export class ProjectLocationStructureProjectCommandRepository
   constructor(private readonly database: AppDatabase) {}
 
   execute(input: ExecuteProjectLocationStructureCommandInput) {
-    return this.database.transaction((tx) => {
+    return executeProjectCommandTransaction(
-      const inverse = this.applyCommand(
+      this.database,
-        tx,
+      input,
-        input.projectId,
+      (tx) =>
-        input.command
+        this.applyCommand(tx, input.projectId, input.command)
     );
-      const revision = appendProjectRevision(tx, {
-        projectId: input.projectId,
-        expectedRevision: input.expectedRevision,
-        source: input.source,
-        description: input.description,
-        actorId: input.actorId,
-        forward: input.command,
-        inverse,
-      });
-      applyProjectHistoryTransition(tx, {
-        projectId: input.projectId,
-        source: input.source,
-        recordedChangeSetId: revision.changeSetId,
-        targetChangeSetId: input.historyTargetChangeSetId,
-      });
-      return { revision, inverse };
-    });
   }
 
   private applyCommand(