fix(review): address PR #787 review blockers — db-orm diagram, C4 diagram, UUID link text

- db-orm.puml: replace geschichten_documents with journey_items, add type column to geschichten, bump schema version to V72
- l3-backend-3g-supporting.puml: update GeschichteController and GeschichteService descriptions to mention STORY/JOURNEY subtypes and JourneyItem
- geschichten/[id]/+page.svelte: replace raw UUID fallback with m.geschichten_document_link_placeholder() i18n key
- messages/{de,en,es}.json: add geschichten_document_link_placeholder translation

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docs/architecture/c4/l3-backend-3g-supporting.puml

@@ -16,8 +16,8 @@ System_Boundary(backend, "API Backend (Spring Boot)") {
     Component(notifCtrl, "NotificationController", "Spring MVC — /api/notifications", "REST and SSE endpoints for notification stream, history with filtering, read/unread state, and per-user preference management.")
     Component(notifSvc, "NotificationService", "Spring Service", "Creates REPLY and MENTION notifications, optionally sends email, marks as read, and pushes events to connected clients via SseEmitterRegistry.")
     Component(sseRegistry, "SseEmitterRegistry", "Spring Component", "In-memory ConcurrentHashMap of Spring SseEmitter instances per user. Handles registration, deregistration, and JSON event broadcasts.")
-    Component(geschCtrl, "GeschichteController", "Spring MVC — /api/geschichten", "CRUD for publishable stories that link persons and documents. Requires BLOG_WRITE permission for write operations.")
+    Component(geschCtrl, "GeschichteController", "Spring MVC — /api/geschichten", "CRUD for publishable stories (STORY) and reading journeys (JOURNEY). Returns GeschichteSummary projections for list; full Geschichte with JourneyItems for detail. Requires BLOG_WRITE permission for write operations.")
-    Component(geschSvc, "GeschichteService", "Spring Service", "Manages story lifecycle (DRAFT → PUBLISHED with timestamp). Sanitizes HTML body with an allowlist policy.")
+    Component(geschSvc, "GeschichteService", "Spring Service", "Manages story lifecycle (DRAFT → PUBLISHED with timestamp). Supports two subtypes: STORY (prose) and JOURNEY (ordered JourneyItem sequence). Sanitizes HTML body with an allowlist policy.")
     Component(exHandler, "GlobalExceptionHandler", "Spring @RestControllerAdvice", "Converts DomainException, validation errors, and generic exceptions to ErrorResponse JSON with machine-readable ErrorCode and HTTP status.")
 }
 

docs/architecture/db/db-orm.puml

@@ -1,6 +1,6 @@
 @startuml db-orm
-' Schema source: Flyway V1–V69 (excl. V37, V43 — intentionally removed)
+' Schema source: Flyway V1–V72 (excl. V37, V43 — intentionally removed)
-' Schema as of:  V69 (2026-05-27)
+' Schema as of:  V72 (2026-06-08)
 ' ⚠ This is a versioned snapshot. Update when the schema changes significantly.
 
 hide circle
@@ -359,6 +359,7 @@ package "Supporting" {
     title : VARCHAR(255) NOT NULL
     body : TEXT
     status : VARCHAR(32) NOT NULL
+    type : VARCHAR(32) NOT NULL
     author_id : UUID <<FK>>
     created_at : TIMESTAMP NOT NULL
     updated_at : TIMESTAMP NOT NULL
@@ -370,9 +371,13 @@ package "Supporting" {
     person_id : UUID <<FK>>
   }
 
-  entity geschichten_documents {
+  entity journey_items {
+    id : UUID <<PK>>
+    --
     geschichte_id : UUID <<FK>>
     document_id : UUID <<FK>>
+    position : INTEGER NOT NULL
+    note : TEXT
   }
 }
 
@@ -436,7 +441,7 @@ audit_log }o--o| documents : document_id
 geschichten }o--o| app_users : author_id
 geschichten_persons }o--|| geschichten : geschichte_id
 geschichten_persons }o--|| persons : person_id
-geschichten_documents }o--|| geschichten : geschichte_id
+journey_items }o--|| geschichten : geschichte_id (ON DELETE CASCADE)
-geschichten_documents }o--|| documents : document_id
+journey_items }o--o| documents : document_id (ON DELETE SET NULL)
 
 @enduml

frontend/messages/de.json

@@ -1037,6 +1037,7 @@
 	"geschichten_published_on": "veröffentlicht am {date}",
 	"geschichten_persons_section": "Personen in dieser Geschichte",
 	"geschichten_documents_section": "Erwähnte Dokumente",
+	"geschichten_document_link_placeholder": "Dokument öffnen",
 	"geschichten_card_heading": "Geschichten",
 	"geschichten_card_write_action": "+ Geschichte schreiben",
 	"geschichten_card_attach_action": "+ Geschichte anhängen",

frontend/messages/en.json

@@ -1037,6 +1037,7 @@
 	"geschichten_published_on": "published on {date}",
 	"geschichten_persons_section": "People in this story",
 	"geschichten_documents_section": "Referenced documents",
+	"geschichten_document_link_placeholder": "Open document",
 	"geschichten_card_heading": "Stories",
 	"geschichten_card_write_action": "+ Write a story",
 	"geschichten_card_attach_action": "+ Attach a story",

frontend/messages/es.json

@@ -1037,6 +1037,7 @@
 	"geschichten_published_on": "publicada el {date}",
 	"geschichten_persons_section": "Personas en esta historia",
 	"geschichten_documents_section": "Documentos mencionados",
+	"geschichten_document_link_placeholder": "Abrir documento",
 	"geschichten_card_heading": "Historias",
 	"geschichten_card_write_action": "+ Escribir historia",
 	"geschichten_card_attach_action": "+ Adjuntar historia",

frontend/src/routes/geschichten/[id]/+page.svelte

@@ -109,7 +109,7 @@ async function handleDelete() {
 							href="/documents/{item.documentId}"
 							class="block rounded border border-line bg-surface px-4 py-3 font-serif text-base text-ink hover:bg-muted"
 						>
-							{item.note ?? item.documentId}
+							{item.note ?? m.geschichten_document_link_placeholder()}
 						</a>
 					</li>
 				{/each}