Workspace note editor: toolbar, link suggestions, wikilink button, Ctrl+S

- Add MarkdownToolbar to the workspace note editor (was missing entirely)
- Add [[ button to MarkdownToolbar so wikilinks are discoverable in all editors;
  clicking inserts [[ which immediately triggers the WikilinkSuggestion dropdown
- Add link suggestions strip: polls /api/notes/link-suggestions 2.5s after edit,
  shows unlinked note-title mentions as clickable chips to wrap in [[...]], plus
  "All" button to apply everything at once — directly addresses the heading→wikilink
  workflow (note title appearing as heading text gets detected and offered for linking)
- Add Ctrl+S keyboard shortcut on title input and editor area to save
- Replace ✕ delete icon on note list items with trash can SVG (consistency with task panel)

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

frontend/src/components/MarkdownToolbar.vue

@@ -73,6 +73,12 @@ const buttons = [
     command: () => props.editor?.chain().focus().toggleCodeBlock().run(),
     isActive: () => props.editor?.isActive("codeBlock") ?? false,
   },
+  {
+    label: "[[",
+    title: "Insert wikilink (type note title to search)",
+    command: () => props.editor?.chain().focus().insertContent("[[").run(),
+    isActive: () => false,
+  },
 ];
 </script>
 

frontend/src/components/WorkspaceNoteEditor.vue

@@ -1,12 +1,14 @@
 <script setup lang="ts">
-import { ref, watch, onMounted } from "vue";
+import { ref, computed, watch, onMounted, onUnmounted } from "vue";
-import { apiGet, apiPatch, apiDelete } from "@/api/client";
+import type { Editor } from "@tiptap/vue-3";
+import { apiGet, apiPatch, apiPost, apiDelete } from "@/api/client";
 import { useToastStore } from "@/stores/toast";
 import { useAutoSave } from "@/composables/useAutoSave";
 import { useTagSuggestions } from "@/composables/useTagSuggestions";
 import { useNotesStore } from "@/stores/notes";
 import TiptapEditor from "@/components/TiptapEditor.vue";
 import TagInput from "@/components/TagInput.vue";
+import MarkdownToolbar from "@/components/MarkdownToolbar.vue";
 
 const props = defineProps<{
   projectId: number;
@@ -44,6 +46,59 @@ const saving = ref(false);
 
 const tagSuggestions = useTagSuggestions(noteTitle, noteBody, noteTags, () => { dirty.value = true; });
 
+// TipTap editor ref (for MarkdownToolbar)
+const editorRef = ref<InstanceType<typeof TiptapEditor> | null>(null);
+const tiptapEditor = computed<Editor | null>(() =>
+  (editorRef.value?.editor as Editor | undefined) ?? null
+);
+
+// Link suggestions
+interface LinkSuggestion { note_id: number; title: string; count: number; }
+const linkSuggestions = ref<LinkSuggestion[]>([]);
+let linkCheckTimer: ReturnType<typeof setTimeout> | null = null;
+
+async function fetchLinkSuggestions() {
+  if (!editingId.value || !noteBody.value) { linkSuggestions.value = []; return; }
+  try {
+    const res = await apiPost<{ suggestions: LinkSuggestion[] }>('/api/notes/link-suggestions', {
+      body: noteBody.value,
+      project_id: props.projectId,
+      exclude_note_id: editingId.value,
+    });
+    linkSuggestions.value = res.suggestions;
+  } catch {
+    linkSuggestions.value = [];
+  }
+}
+
+function scheduleLinkCheck() {
+  if (linkCheckTimer) clearTimeout(linkCheckTimer);
+  linkCheckTimer = setTimeout(fetchLinkSuggestions, 2500);
+}
+
+function applyWikilinkToText(text: string, title: string): string {
+  const escaped = title.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
+  const parts = text.split(/(\[\[[^\]]*\]\])/);
+  const pattern = new RegExp(`\\b${escaped}\\b`, 'gi');
+  return parts.map((part, i) =>
+    i % 2 === 0 ? part.replace(pattern, `[[${title}]]`) : part
+  ).join('');
+}
+
+function applyLink(s: LinkSuggestion) {
+  noteBody.value = applyWikilinkToText(noteBody.value, s.title);
+  dirty.value = true;
+  linkSuggestions.value = linkSuggestions.value.filter(x => x.note_id !== s.note_id);
+}
+
+function applyAllLinks() {
+  let text = noteBody.value;
+  for (const s of linkSuggestions.value) text = applyWikilinkToText(text, s.title);
+  noteBody.value = text;
+  dirty.value = true;
+  linkSuggestions.value = [];
+}
+
 async function loadProjectNotes() {
   listLoading.value = true;
   try {
@@ -69,7 +124,9 @@ async function openNote(id: number) {
     noteTags.value = note.tags ?? [];
     dirty.value = false;
     tagSuggestions.dismissTagSuggestions();
+    linkSuggestions.value = [];
     view.value = "editor";
+    fetchLinkSuggestions();
     emit("note-loaded", note.id);
   } catch {
     toast.show("Failed to load note", "error");
@@ -161,7 +218,7 @@ function formatDate(iso: string): string {
 }
 
 watch(noteTitle, () => { dirty.value = true; });
-watch(noteBody, () => { dirty.value = true; });
+watch(noteBody, () => { dirty.value = true; if (editingId.value) scheduleLinkCheck(); });
 watch(noteTags, () => { dirty.value = true; });
 
 watch(
@@ -176,6 +233,7 @@ watch(
 
 useAutoSave(dirty, saving, saveNote, 60_000);
 onMounted(loadProjectNotes);
+onUnmounted(() => { if (linkCheckTimer) clearTimeout(linkCheckTimer); });
 </script>
 
 <template>
@@ -197,6 +255,7 @@ onMounted(loadProjectNotes);
           v-model="noteTitle"
           class="note-title-input"
           placeholder="Note title"
+          @keydown.ctrl.s.prevent="saveNote"
         />
       </div>
 
@@ -229,8 +288,28 @@ onMounted(loadProjectNotes);
         <button class="btn-dismiss-suggestions" @click="tagSuggestions.dismissTagSuggestions()">✕</button>
       </div>
 
-      <div class="editor-area">
+      <!-- Formatting toolbar -->
-        <TiptapEditor v-model="noteBody" />
+      <div class="toolbar-row">
+        <MarkdownToolbar :editor="tiptapEditor" />
+      </div>
+
+      <!-- Link suggestions strip -->
+      <div v-if="linkSuggestions.length" class="link-suggest-strip">
+        <span class="link-suggest-label">Links:</span>
+        <span
+          v-for="s in linkSuggestions"
+          :key="s.note_id"
+          class="link-suggest-chip"
+          :title="`Appears ${s.count}× unlinked`"
+        >
+          <button class="btn-chip-link" @click="applyLink(s)">[[{{ s.title }}]]</button>
+        </span>
+        <button class="btn-link-all" @click="applyAllLinks" title="Link all suggestions">All</button>
+        <button class="btn-dismiss-suggestions" @click="linkSuggestions = []">✕</button>
+      </div>
+
+      <div class="editor-area" @keydown.ctrl.s.prevent="saveNote">
+        <TiptapEditor ref="editorRef" v-model="noteBody" />
       </div>
     </template>
 
@@ -276,7 +355,7 @@ onMounted(loadProjectNotes);
               title="Delete note"
               @click="requestDelete(note.id, $event)"
             >
-              ✕
+              <svg xmlns="http://www.w3.org/2000/svg" width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="3 6 5 6 21 6"/><path d="M19 6l-1 14a2 2 0 0 1-2 2H8a2 2 0 0 1-2-2L5 6"/><path d="M10 11v6"/><path d="M14 11v6"/><path d="M9 6V4a1 1 0 0 1 1-1h4a1 1 0 0 1 1 1v2"/></svg>
             </button>
           </div>
         </li>
@@ -443,6 +522,63 @@ onMounted(loadProjectNotes);
 }
 .btn-dismiss-suggestions:hover { color: var(--color-text); }
 
+.toolbar-row {
+  padding: 0.3rem 0.6rem;
+  border-bottom: 1px solid var(--color-border);
+  flex-shrink: 0;
+}
+
+.link-suggest-strip {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 0.25rem;
+  padding: 0.3rem 0.6rem;
+  border-bottom: 1px solid var(--color-border);
+  background: color-mix(in srgb, var(--color-primary) 5%, var(--color-surface));
+  flex-shrink: 0;
+}
+
+.link-suggest-label {
+  font-size: 0.7rem;
+  color: var(--color-text-muted);
+  flex-shrink: 0;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.04em;
+}
+
+.link-suggest-chip {
+  display: inline-flex;
+}
+
+.btn-chip-link {
+  background: none;
+  border: 1px solid var(--color-primary);
+  border-radius: 999px;
+  padding: 0.1rem 0.45rem;
+  font-size: 0.7rem;
+  color: var(--color-primary);
+  cursor: pointer;
+  font-family: monospace;
+  white-space: nowrap;
+}
+.btn-chip-link:hover {
+  background: color-mix(in srgb, var(--color-primary) 15%, transparent);
+}
+
+.btn-link-all {
+  background: none;
+  border: 1px solid var(--color-border);
+  border-radius: 4px;
+  padding: 0.1rem 0.4rem;
+  font-size: 0.7rem;
+  color: var(--color-text-muted);
+  cursor: pointer;
+  margin-left: 0.1rem;
+}
+.btn-link-all:hover { border-color: var(--color-primary); color: var(--color-primary); }
+
 .editor-area {
   flex: 1;
   overflow-y: auto;