add composer-unused, comprehensive docs, and project restructure

- Add icanhazstring/composer-unused as dev dependency for dependency hygiene checks
- Add German documentation (docs/) covering architecture, conventions, workflows, and developer checklists
- Add API layer (ApiAuth, ApiBootstrap, ApiResponse), audit, scheduler, custom fields, and SSO services
- Add Microsoft OIDC SSO, API token management, and user lifecycle features
- Add swagger-ui vendor integration and OpenAPI spec
- Add production Docker setup and bin/ scripts
- Update composer dependencies, config, templates, and frontend assets throughout

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

web/css/components/app-search.css

@@ -1,5 +1,49 @@
+@layer components {
 .app-search {
-  padding: 0 var(--app-spacing);
+    position: relative;
+    padding: 0 var(--app-spacing);
+    margin-bottom: var(--app-spacing);
+}
+
+.app-search-shortcut {
+  position: absolute;
+  right: calc(var(--app-spacing) + 0.5rem);
+  top: 50%;
+  transform: translateY(-50%);
+  border: 1px solid var(--app-border);
+  border-radius: 6px;
+  background: var(--app-card-background-color);
+  color: var(--app-muted-color);
+  font-size: 0.75rem;
+  line-height: 1;
+  padding: 0.2rem 0.4rem;
+  pointer-events: none;
+}
+
+.app-search-empty-state {
+  margin: var(--app-spacing);
+  padding: 1rem;
+  border: 1px dashed var(--app-border);
+  border-radius: var(--app-border-radius);
+  text-align: center;
+  color: var(--app-muted-color);
+  font-size: 0.9rem;
+  cursor: text;
+}
+
+.app-search-empty-state .bi-search {
+  display: inline-block;
+  font-size: 1.25rem;
+  margin-bottom: 0.5rem;
+  color: var(--app-color);
+}
+
+.app-search-empty-state p {
+  margin: 0 0 0.25rem;
+}
+
+.app-search-empty-state small {
+  display: block;
 }
 
 ul.app-search-results {
@@ -14,21 +58,23 @@ ul.app-search-results > li > a {
 ul.app-search-results .badge {
     font-size: 10px;
     padding: 1px;
-    min-width: 20px;
+    min-width: 18px;
     text-align: center;
     border-radius: 999px;
     background: var(--app-accordion-border-color);
     display: inline-flex;
     justify-content: center;
     align-items: center;
-    height: 20px;
+    height: 18px;
+    position: relative;
+    top: -1px;
 }
 
 ul.app-search-preview {
     position: relative;
     font-size: 11px;
-    padding: 0 0 0 20px;
-    margin: 6px 0 1.5rem 10px;
+    padding: 0 0 0 0;
+    margin: 0;
     opacity: 0.75;
     list-style: none;
 }
@@ -86,6 +132,8 @@ input#side-search {
     --app-form-element-spacing-vertical: 6px;
     height: auto;
     font-size: 13px;
+    padding-right: 3rem;
+    margin-bottom:0;
 }
 
 ul.app-search-preview:has(li) {
@@ -137,3 +185,4 @@ ul.app-search-preview:has(li) {
     color: var(--app-muted-color);
     font-weight: 600;
 }
+}