QoL: Shift+Enter save-and-continue + autofocus quick-add on landing

- Shift+Enter in the quick-add title/body saves the current note and immediately
  starts a fresh one, staying focused for rapid capture. Plain Enter is still a
  newline (body) / title→body (title). Placeholder hints the shortcut.
- Landing on the board auto-opens + focuses the note input (QuickAdd autofocus
  prop, passed from BoardView) so you can start typing on arrival.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FRgehjoz7Yv8LkUfADxACm

frontend/src/components/QuickAdd.vue

@@ -4,6 +4,8 @@ import { useNotesStore } from "../stores/notes";
 import ColorPicker from "./ColorPicker.vue";
 import type { NoteColor } from "../notes/colors";
 
+const props = withDefaults(defineProps<{ autofocus?: boolean }>(), { autofocus: false });
+
 const notes = useNotesStore();
 
 const expanded = ref(false);
@@ -20,24 +22,41 @@ async function open() {
   bodyInput.value?.focus();
 }
 
-function reset() {
-  expanded.value = false;
+function hasContent(): boolean {
+  return title.value.trim() !== "" || body.value.trim() !== "";
+}
+
+function clearFields() {
   title.value = "";
   body.value = "";
   color.value = "default";
 }
 
-async function commit() {
-  const hasContent = title.value.trim() !== "" || body.value.trim() !== "";
-  if (hasContent) {
-    saving.value = true;
-    try {
-      await notes.create({ title: title.value, body: body.value, color: color.value });
-    } finally {
-      saving.value = false;
-    }
+async function persist(): Promise<void> {
+  if (!hasContent()) return;
+  saving.value = true;
+  try {
+    await notes.create({ title: title.value, body: body.value, color: color.value });
+  } finally {
+    saving.value = false;
   }
-  reset();
+}
+
+// Close the composer, saving anything typed.
+async function commit() {
+  await persist();
+  clearFields();
+  expanded.value = false;
+}
+
+// Shift+Enter: save the current note and immediately start a fresh one, staying
+// open + focused for rapid-fire capture.
+async function commitAndContinue() {
+  if (!hasContent()) return;
+  await persist();
+  clearFields();
+  await nextTick();
+  bodyInput.value?.focus();
 }
 
 function onDocumentMousedown(e: MouseEvent) {
@@ -46,7 +65,11 @@ function onDocumentMousedown(e: MouseEvent) {
   }
 }
 
-onMounted(() => document.addEventListener("mousedown", onDocumentMousedown));
+onMounted(() => {
+  document.addEventListener("mousedown", onDocumentMousedown);
+  // Landing on the board drops the cursor straight into the note input.
+  if (props.autofocus) void open();
+});
 onBeforeUnmount(() => document.removeEventListener("mousedown", onDocumentMousedown));
 </script>
 
@@ -68,14 +91,16 @@ onBeforeUnmount(() => document.removeEventListener("mousedown", onDocumentMoused
           type="text"
           placeholder="Title"
           class="w-full bg-transparent px-1 text-sm font-semibold outline-none placeholder:text-neutral-400"
-          @keydown.enter.prevent="bodyInput?.focus()"
+          @keydown.enter.shift.prevent="commitAndContinue"
+          @keydown.enter.exact.prevent="bodyInput?.focus()"
         />
         <textarea
           ref="bodyInput"
           v-model="body"
           rows="3"
-          placeholder="Take a note…"
+          placeholder="Take a note…    (Shift+Enter saves &amp; starts a new one)"
           class="w-full resize-none bg-transparent px-1 text-sm outline-none placeholder:text-neutral-400"
+          @keydown.enter.shift.prevent="commitAndContinue"
           @keydown.esc="commit"
         />
         <div class="flex items-center justify-between gap-2 pt-1">

frontend/src/views/BoardView.vue

@@ -112,7 +112,7 @@ async function signOut() {
     </header>
 
     <main class="mx-auto w-full max-w-6xl flex-1 px-4 py-6">
-      <QuickAdd v-if="currentView === 'active'" class="mb-8" />
+      <QuickAdd v-if="currentView === 'active'" autofocus class="mb-8" />
 
       <div v-if="notes.loading" class="py-24 text-center text-sm text-neutral-400">Loading…</div>