feat: publish case launch context and product area

src/govoplan_cases/backend/manifest.py

@@ -26,6 +26,7 @@ from govoplan_core.core.modules import (
     ModuleManifest,
     NavItem,
     PermissionDefinition,
+    ProductAreaContribution,
     RoleTemplate,
 )
 from govoplan_core.core.views import ViewSurface
@@ -216,6 +217,17 @@ manifest = ModuleManifest(
                 order=35,
             ),
         ),
+        product_areas=(
+            ProductAreaContribution(
+                id="services-cases",
+                module_id=MODULE_ID,
+                label="i18n:govoplan-core.product_area.services_cases",
+                icon="landmark",
+                description="i18n:govoplan-core.product_area.services_cases_description",
+                surface_ids=("cases.nav.cases", "cases.route.cases", "cases.route.cases.caseid"),
+                order=20,
+            ),
+        ),
         view_surfaces=(
             ViewSurface(
                 id="cases.navigation",
@@ -388,6 +400,44 @@ manifest = ModuleManifest(
     ),
     tenant_summary_providers=(_tenant_summary,),
     documentation=(
+        DocumentationTopic(
+            id="cases.workflow.quick-access-context",
+            title="Use task-local tools from an active Case",
+            summary="Launch an authorized full-page tool and return to the exact Case route and context.",
+            body=(
+                "After an exact Case revision loads, the Case detail page publishes a bounded active-object reference to Core. "
+                "Quick Access may carry that reference together with the current tenant, acting assignment, temporal selection, "
+                "View revision, and route when opening an owning module's full page. It never carries Case content or an access "
+                "decision. The destination reauthorizes its data and effects. Unsaved Case edits use the shared save/discard guard "
+                "before navigation, and the shell provides an explicit return action."
+            ),
+            layer="available",
+            documentation_types=("admin", "user"),
+            audience=("case_manager", "operator", "module_admin"),
+            related_modules=("quick_access", "views", "access"),
+            order=13,
+            links=(
+                DocumentationLink(label="Cases", href="/cases", kind="runtime"),
+                DocumentationLink(
+                    label="Quick Access architecture",
+                    href="govoplan/docs/architecture/QUICK_ACCESS_AND_PRODUCT_AREAS.md",
+                    kind="repository",
+                ),
+            ),
+            translations={
+                "de": {
+                    "title": "Aufgabenbezogene Werkzeuge aus einem aktiven Vorgang verwenden",
+                    "summary": "Ein berechtigtes Werkzeug oeffnen und zum genauen Vorgangskontext zurueckkehren.",
+                    "body": (
+                        "Nach dem Laden einer genauen Vorgangsrevision veroeffentlicht die Detailseite einen begrenzten Objektverweis an Core. "
+                        "Der Schnellzugriff darf diesen Verweis zusammen mit Mandant, handelnder Zuordnung, Zeitbezug, Ansichtsversion und Ruecksprungort uebergeben. "
+                        "Vorgangsinhalte oder Zugriffsentscheidungen werden nicht uebertragen. Das Ziel prueft Daten und Wirkungen erneut; ungespeicherte Aenderungen "
+                        "werden vor dem Wechsel durch den gemeinsamen Speichern-Verwerfen-Dialog geschuetzt."
+                    ),
+                }
+            },
+            metadata={"help_contexts": ["cases.detail.quick-access"]},
+        ),
         DocumentationTopic(
             id="cases.workflow.record-formal-decision",
             title="Record a formal Decision from a Case",

webui/src/features/cases/CaseDetailPage.tsx

@@ -14,6 +14,7 @@ import { ActionToolbar,
   hasScope,
   usePlatformModuleInstalled,
   useGuardedNavigate,
+  useRegisterActiveObject,
   useUnsavedDraftGuard,
   type PlatformRouteContext
 } from "@govoplan/core-webui";
@@ -74,6 +75,16 @@ export default function CaseDetailPage({ settings, auth }: PlatformRouteContext)
           ? "Enable Mandates to verify formal authority."
           : undefined;
   const canFileRecords = recordsAvailable && hasScope(auth, "records:workspace:write");
+  const activeCase = useMemo(() => record ? {
+    ownerModule: record.reference.owner_module,
+    kind: record.reference.kind,
+    objectId: record.reference.object_id,
+    tenantId: record.reference.tenant_id,
+    label: `${record.case_number} · ${record.title}`,
+    version: record.reference.version ?? String(record.revision),
+    path: `/cases/${encodeURIComponent(record.reference.object_id)}`
+  } : null, [record]);
+  useRegisterActiveObject(activeCase);
 
   const load = useCallback((signal?: AbortSignal) => {
     setLoading(true);

webui/src/styles/cases.css

@@ -97,7 +97,7 @@
   margin-top: 16px;
   padding: 14px;
   border: 1px solid var(--border);
-  border-radius: 6px;
+  border-radius: var(--radius-compact);
   background: var(--surface-raised);
 }
 
@@ -128,7 +128,7 @@
   margin-top: 18px;
   background: var(--border);
   border: 1px solid var(--border);
-  border-radius: 6px;
+  border-radius: var(--radius-compact);
   overflow: hidden;
 }
 
@@ -233,7 +233,7 @@
 .case-decision-list > article {
   padding: 12px;
   border: 1px solid var(--border);
-  border-radius: 6px;
+  border-radius: var(--radius-compact);
   background: var(--surface-raised);
 }
 
@@ -326,7 +326,7 @@
   font-size: 0.76rem;
 }
 
-@media (max-width: 860px) {
+@media (max-width: 900px) {
   .cases-count {
     margin-left: 0;
   }