PR 6: Database migration validation - fresh/upgrade test complete

✅ Database Setup:
- Created PostgreSQL kartselldb with kartsell user
- SSH port forward established (localhost:5432 → 178.104.200.7:5432)

✅ DbMigrator Fixes:
- Fixed migration path discovery (AppContext.BaseDirectory fallback)
- Added empty variable dictionary to suppress DbUp preprocessing
- Fixed PostgreSQL dollar quoting conflict ($policy$ → $$)

✅ Migration Results:
- All 21 migrations executed successfully
- Schema versions journal created and tracked
- 21 scripts processed in order, no rollback needed

Status: FRESH DATABASE DEPLOYMENT SUCCESSFUL
- kartselldb fully initialized with v16 schema
- Ready for application startup

Next: Deploy application and run integration tests

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

frontend/src/shared/ui/layouts/CrudWorkspaceLayout.vue.js

@@ -0,0 +1,50 @@
+const __VLS_props = withDefaults(defineProps(), { asideWidth: '24rem', dense: false }); // @ts-ignore
+const __VLS_defaults = { asideWidth: '24rem', dense: false };
+const __VLS_ctx = {
+    ...{},
+    ...{},
+    ...{},
+};
+let __VLS_components;
+let __VLS_intrinsics;
+let __VLS_directives;
+/** @type {__VLS_StyleScopedClasses['ks-crud-workspace__body']} */ ;
+/** @type {__VLS_StyleScopedClasses['ks-crud-workspace__body']} */ ;
+/** @type {__VLS_StyleScopedClasses['has-aside']} */ ;
+__VLS_asFunctionalElement1(__VLS_intrinsics.section, __VLS_intrinsics.section)({
+    ...{ class: "ks-crud-workspace" },
+    ...{ class: ({ dense: __VLS_ctx.dense }) },
+    ...{ style: ({ '--ks-crud-aside': __VLS_ctx.asideWidth }) },
+});
+/** @type {__VLS_StyleScopedClasses['ks-crud-workspace']} */ ;
+/** @type {__VLS_StyleScopedClasses['dense']} */ ;
+if (__VLS_ctx.$slots.toolbar) {
+    __VLS_asFunctionalElement1(__VLS_intrinsics.header, __VLS_intrinsics.header)({});
+    var __VLS_0 = {};
+}
+__VLS_asFunctionalElement1(__VLS_intrinsics.div, __VLS_intrinsics.div)({
+    ...{ class: "ks-crud-workspace__body" },
+    ...{ class: ({ 'has-aside': __VLS_ctx.$slots.aside }) },
+});
+/** @type {__VLS_StyleScopedClasses['ks-crud-workspace__body']} */ ;
+/** @type {__VLS_StyleScopedClasses['has-aside']} */ ;
+__VLS_asFunctionalElement1(__VLS_intrinsics.main, __VLS_intrinsics.main)({});
+var __VLS_2 = {};
+if (__VLS_ctx.$slots.aside) {
+    __VLS_asFunctionalElement1(__VLS_intrinsics.aside, __VLS_intrinsics.aside)({});
+    var __VLS_4 = {};
+}
+if (__VLS_ctx.$slots.actions) {
+    __VLS_asFunctionalElement1(__VLS_intrinsics.footer, __VLS_intrinsics.footer)({});
+    var __VLS_6 = {};
+}
+// @ts-ignore
+var __VLS_1 = __VLS_0, __VLS_3 = __VLS_2, __VLS_5 = __VLS_4, __VLS_7 = __VLS_6;
+// @ts-ignore
+[dense, asideWidth, $slots, $slots, $slots, $slots,];
+const __VLS_base = (await import('vue')).defineComponent({
+    __typeProps: {},
+    props: {},
+});
+const __VLS_export = {};
+export default {};