fix: skip closed inline teleports so sheets never mount against a missing target

frontend/src/components/AppSheet.vue

@@ -100,7 +100,7 @@ onBeforeUnmount(deactivate)
     </div>
     </Transition>
   </Teleport>
-  <Teleport v-else-if="inlineTarget" :key="'app-sheet-inline'" :to="inlineTarget">
+  <Teleport v-else-if="inlineTarget && open" :key="'app-sheet-inline'" :to="inlineTarget">
     <component v-if="open" :is="$attrs.onSubmit ? 'form' : 'section'" ref="panel" class="app-sheet" :class="[`app-sheet--${variant}`, panelClass]" role="dialog" :aria-labelledby="titleId" :aria-describedby="descriptionId" :aria-label="label" :aria-busy="busy || undefined" tabindex="-1" v-bind="$attrs" @keydown="keydown">
       <slot />
     </component>

frontend/src/style.test.ts

@@ -1532,7 +1532,7 @@ describe('desktop task and habit detail disclosure', () => {
     expect(mvpPanel).toContain('if (busy.value && !force) return')
     expect(mvpPanel).toContain(':modal="compactLayout"')
     expect(mvpPanel).toContain('inline-target=".shell"')
-    expect(appSheet).toContain(`<Teleport v-else-if="inlineTarget" :key="'app-sheet-inline'" :to="inlineTarget">`)
+    expect(appSheet).toContain(`<Teleport v-else-if="inlineTarget && open" :key="'app-sheet-inline'" :to="inlineTarget">`)
     expect(mvpPanel).toContain("watch(selectedHabit, (habit) => emit('detail', Boolean(habit)))")
     expect(app).toContain('@click="closeTaskDetail"')
     expect(app).toContain('function closeTaskDetail()')