UI polish pass: word count, slash commands, task lists, graph peek, bulk delete, export

- WordCount component (toggle words/chars vs read time, persisted mode)
- TipTap: TaskList/TaskItem extensions, slash command menu (H1-H3, lists, code, quote, task)
- Markdown serializer: task list → `- [ ]` / `- [x]` roundtrip
- GraphView: slide-in peek panel for note/task nodes (body, tags, linked nodes); tag nodes still navigate
- ChatView: bulk-select conversations with two-click confirm delete + chat retention policy (default 90d)
- NoteEditorView: pill tab bar with animated edit/preview toggle + WordCount in toolbar
- WorkspaceNoteEditor: inline search with tag matching, inline new-note creation, WordCount
- WorkspaceTaskPanel: task body rendered in slide-over + Edit link
- Settings: data export (Markdown ZIP / JSON) via GET /api/export
- Accessibility: skip-to-content link, aria-labels on all icon-only buttons
- Fix: export route used non-existent fabledassistant.database — corrected to async_session()
- Fix: ToolCallRecord.status type now includes "running" (was causing TS build error)
- Dockerfile: upgrade npm to latest before install to suppress major-version notice
- npm audit fix: patched minimatch (ReDoS) and rollup (path traversal) — 0 vulnerabilities

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

frontend/src/views/NoteEditorView.vue

@@ -13,6 +13,7 @@ import { apiGet, apiPost } from "@/api/client";
 import type { Editor } from "@tiptap/vue-3";
 import MarkdownToolbar from "@/components/MarkdownToolbar.vue";
 import TiptapEditor from "@/components/TiptapEditor.vue";
+import WordCount from "@/components/WordCount.vue";
 import TagInput from "@/components/TagInput.vue";
 import ProjectSelector from "@/components/ProjectSelector.vue";
 import MilestoneSelector from "@/components/MilestoneSelector.vue";
@@ -147,6 +148,8 @@ watch(body, () => {
   if (projectId.value) scheduleLinkCheck();
 });
 
+watch(noteId, () => { showPreview.value = false; });
+
 watch(projectId, (pid) => {
   if (pid) fetchLinkSuggestions();
   else linkSuggestions.value = [];
@@ -324,6 +327,7 @@ onUnmounted(() => assist.clearSelection());
         </button>
         <button v-if="isEditing" class="btn-delete" @click="remove">Delete</button>
         <button v-if="isEditing" class="btn-history" @click="showHistory = true">History</button>
+        <WordCount :body="body" />
       </div>
       <input
         ref="titleRef"
@@ -363,21 +367,23 @@ onUnmounted(() => assist.clearSelection());
 
         <!-- Normal editor -->
         <template v-else>
-          <div v-show="!showPreview" class="body-editor-wrap">
-            <TiptapEditor
-              ref="editorRef"
-              :modelValue="body"
-              placeholder="Write your note in Markdown..."
-              @update:modelValue="onBodyUpdate"
-              @selectionChange="onSelectionChange"
-              @escape="titleRef?.focus()"
+          <Transition name="tab-fade" mode="out-in">
+            <div v-if="!showPreview" class="body-editor-wrap">
+              <TiptapEditor
+                ref="editorRef"
+                :modelValue="body"
+                placeholder="Write your note in Markdown..."
+                @update:modelValue="onBodyUpdate"
+                @selectionChange="onSelectionChange"
+                @escape="titleRef?.focus()"
+              />
+            </div>
+            <div
+              v-else
+              class="preview-pane prose"
+              v-html="renderedPreview"
             />
-          </div>
-          <div
-            v-show="showPreview"
-            class="preview-pane prose"
-            v-html="renderedPreview"
-          />
+          </Transition>
         </template>
 
         <!-- Error from assist -->
@@ -431,7 +437,7 @@ onUnmounted(() => assist.clearSelection());
                 #{{ tag }}
                 <span v-if="appliedTags.has(tag)" class="tag-check">&#10003;</span>
               </button>
-              <button class="btn-dismiss-tags" @click="dismissTagSuggestions">&times;</button>
+              <button class="btn-dismiss-tags" aria-label="Dismiss tag suggestions" @click="dismissTagSuggestions">&times;</button>
             </template>
           </div>
 
@@ -573,6 +579,43 @@ onUnmounted(() => assist.clearSelection());
   gap: 0.25rem;
 }
 
+.editor-tabs {
+  display: inline-flex;
+  background: var(--color-bg);
+  border: 1px solid var(--color-border);
+  border-radius: 8px;
+  padding: 2px;
+  gap: 2px;
+  align-self: flex-start;
+}
+
+.tab {
+  background: none;
+  border: none;
+  border-radius: 6px;
+  padding: 0.22rem 0.75rem;
+  font-size: 0.78rem;
+  font-weight: 500;
+  color: var(--color-text-muted);
+  cursor: pointer;
+  transition: background 0.15s, color 0.15s;
+}
+.tab:hover { color: var(--color-text); }
+.tab.active {
+  background: var(--color-surface);
+  color: var(--color-text);
+  box-shadow: 0 1px 3px rgba(0,0,0,0.12);
+}
+
+.tab-fade-enter-active,
+.tab-fade-leave-active {
+  transition: opacity 0.12s ease;
+}
+.tab-fade-enter-from,
+.tab-fade-leave-to {
+  opacity: 0;
+}
+
 .body-editor-wrap {
   min-height: 200px;
 }