Add processing activity, DPIA and TIA publish to document system

Replace the old PDF/snapshot-based exports for processing activities,
Data Protection Impact Assessments and Transfer Impact Assessments with
the publish document system. Includes GraphQL mutations, MCP tools, CLI
commands, n8n operations, frontend publish dialogs, e2e tests, and
prosemirror register templates that mirror the previous PDF layouts.

Each register lives as a generated DocumentTypeRegister document on the
organization, reused across publishes (the major version bumps on every
republish). Approvers can be passed in to create a draft pending
approval; otherwise the version is published immediately. The frontend
ProcessingActivities page exposes a Publish dropdown per register and a
Document link button per active tab, pre-fills the previous default
approvers, and navigates to the published document on success.

Remove snapshot mode entirely from these three entities: drop snapshotId
and sourceId from GraphQL schemas, types, filters, resolvers, MCP spec,
frontend routes and pages; remove SnapshotsTypeProcessingActivities from
the snapshot registry and delete the ProcessingActivities.Snapshot,
ProcessingActivitySnapshotter interface and *.InsertProcessingActivitySnapshots
methods. The snapshot_id columns remain in the database but are now
filtered out with snapshot_id IS NULL.

Add Get/Upsert/Clear GeneratedDocumentID methods on each entity type
(ProcessingActivity, DataProtectionImpactAssessment,
TransferImpactAssessment) backed by new columns in the generated_documents
table, matching the Finding/Obligation pattern.

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/server/api/mcp/v1/specification.yaml

@@ -3709,15 +3709,6 @@ components:
         cursor:
           $ref: "#/components/schemas/CursorKey"
           description: Page cursor
-        filter:
-          type: object
-          properties:
-            snapshot_id:
-              anyOf:
-                - $ref: "#/components/schemas/GID"
-                - type: "null"
-              description: Filter by snapshot ID. Defaults to null, which returns only processing activities with no snapshot (current live data). Pass a specific snapshot ID to retrieve processing activities as they were at that snapshot.
-              default: null
 
     ListProcessingActivitiesOutput:
       type: object
@@ -4016,15 +4007,6 @@ components:
           type: integer
         cursor:
           $ref: "#/components/schemas/CursorKey"
-        filter:
-          type: object
-          properties:
-            snapshot_id:
-              anyOf:
-                - $ref: "#/components/schemas/GID"
-                - type: "null"
-              description: Filter by snapshot ID. Defaults to null, which returns only DPIAs with no snapshot (current live data). Pass a specific snapshot ID to retrieve DPIAs as they were at that snapshot.
-              default: null
 
     ListDataProtectionImpactAssessmentsOutput:
       type: object
@@ -4200,15 +4182,6 @@ components:
           type: integer
         cursor:
           $ref: "#/components/schemas/CursorKey"
-        filter:
-          type: object
-          properties:
-            snapshot_id:
-              anyOf:
-                - $ref: "#/components/schemas/GID"
-                - type: "null"
-              description: Filter by snapshot ID. Defaults to null, which returns only TIAs with no snapshot (current live data). Pass a specific snapshot ID to retrieve TIAs as they were at that snapshot.
-              default: null
 
     ListTransferImpactAssessmentsOutput:
       type: object
@@ -7065,6 +7038,87 @@ components:
           $ref: "#/components/schemas/GID"
           description: Created document version ID
 
+    PublishProcessingActivityListInput:
+      type: object
+      required:
+        - organization_id
+      properties:
+        organization_id:
+          $ref: "#/components/schemas/GID"
+          description: Organization ID
+        approver_ids:
+          type: array
+          items:
+            $ref: "#/components/schemas/GID"
+          description: Optional approver profile IDs. If provided, creates a draft pending approval instead of publishing immediately.
+
+    PublishProcessingActivityListOutput:
+      type: object
+      required:
+        - document_id
+        - document_version_id
+      properties:
+        document_id:
+          $ref: "#/components/schemas/GID"
+          description: Created or updated document ID
+        document_version_id:
+          $ref: "#/components/schemas/GID"
+          description: Created document version ID
+
+    PublishDataProtectionImpactAssessmentListInput:
+      type: object
+      required:
+        - organization_id
+      properties:
+        organization_id:
+          $ref: "#/components/schemas/GID"
+          description: Organization ID
+        approver_ids:
+          type: array
+          items:
+            $ref: "#/components/schemas/GID"
+          description: Optional approver profile IDs. If provided, creates a draft pending approval instead of publishing immediately.
+
+    PublishDataProtectionImpactAssessmentListOutput:
+      type: object
+      required:
+        - document_id
+        - document_version_id
+      properties:
+        document_id:
+          $ref: "#/components/schemas/GID"
+          description: Created or updated document ID
+        document_version_id:
+          $ref: "#/components/schemas/GID"
+          description: Created document version ID
+
+    PublishTransferImpactAssessmentListInput:
+      type: object
+      required:
+        - organization_id
+      properties:
+        organization_id:
+          $ref: "#/components/schemas/GID"
+          description: Organization ID
+        approver_ids:
+          type: array
+          items:
+            $ref: "#/components/schemas/GID"
+          description: Optional approver profile IDs. If provided, creates a draft pending approval instead of publishing immediately.
+
+    PublishTransferImpactAssessmentListOutput:
+      type: object
+      required:
+        - document_id
+        - document_version_id
+      properties:
+        document_id:
+          $ref: "#/components/schemas/GID"
+          description: Created or updated document ID
+        document_version_id:
+          $ref: "#/components/schemas/GID"
+          description: Created document version ID
+
     PublishStatementOfApplicabilityInput:
       type: object
       required:
@@ -10318,6 +10372,30 @@ tools:
       $ref: "#/components/schemas/PublishObligationListInput"
     outputSchema:
       $ref: "#/components/schemas/PublishObligationListOutput"
+  - name: publishProcessingActivityList
+    description: Publish the processing activity register for an organization as a document. If a document already exists, a new version is created.
+    hints:
+      readonly: false
+    inputSchema:
+      $ref: "#/components/schemas/PublishProcessingActivityListInput"
+    outputSchema:
+      $ref: "#/components/schemas/PublishProcessingActivityListOutput"
+  - name: publishDataProtectionImpactAssessmentList
+    description: Publish the Data Protection Impact Assessment register for an organization as a document. If a document already exists, a new version is created.
+    hints:
+      readonly: false
+    inputSchema:
+      $ref: "#/components/schemas/PublishDataProtectionImpactAssessmentListInput"
+    outputSchema:
+      $ref: "#/components/schemas/PublishDataProtectionImpactAssessmentListOutput"
+  - name: publishTransferImpactAssessmentList
+    description: Publish the Transfer Impact Assessment register for an organization as a document. If a document already exists, a new version is created.
+    hints:
+      readonly: false
+    inputSchema:
+      $ref: "#/components/schemas/PublishTransferImpactAssessmentListInput"
+    outputSchema:
+      $ref: "#/components/schemas/PublishTransferImpactAssessmentListOutput"
   - name: publishStatementOfApplicability
     description: Publish a statement of applicability as a document. If a document already exists, a new version is created.
     hints: