Add WYSIWYG toolbar (bold, italic, headings, lists, quote, link, hr)

frontend/package.json

@@ -18,6 +18,7 @@
     "@milkdown/plugin-collab": "^7.6.0",
     "@milkdown/plugin-listener": "^7.6.0",
     "@milkdown/theme-nord": "^7.6.0",
+    "@milkdown/utils": "^7.6.0",
     "@codemirror/lang-markdown": "^6.3.0",
     "@codemirror/state": "^6.5.0",
     "@codemirror/view": "^6.35.0",

frontend/src/components/MilkdownEditor.vue

@@ -1,13 +1,32 @@
 <template>
+  <div class="milkdown-wrap">
+    <div class="milkdown-toolbar">
+      <button @click="cmd('ToggleBold')" title="Bold"><b>B</b></button>
+      <button @click="cmd('ToggleItalic')" title="Italic"><i>I</i></button>
+      <button @click="cmd('ToggleStrikethrough')" title="Strikethrough"><s>S</s></button>
+      <button @click="cmd('ToggleInlineCode')" title="Code">&lt;/&gt;</button>
+      <span class="sep"></span>
+      <button @click="cmd('WrapInHeading', 1)" title="H1">H1</button>
+      <button @click="cmd('WrapInHeading', 2)" title="H2">H2</button>
+      <button @click="cmd('WrapInHeading', 3)" title="H3">H3</button>
+      <span class="sep"></span>
+      <button @click="cmd('WrapInBulletList')" title="Bullet list">•</button>
+      <button @click="cmd('WrapInOrderedList')" title="Ordered list">1.</button>
+      <button @click="cmd('TurnIntoBlockquote')" title="Quote">❝</button>
+      <button @click="cmd('InsertHr')" title="Horizontal rule">―</button>
+      <button @click="cmd('InsertLink')" title="Link">🔗</button>
+    </div>
     <div ref="editorRoot" class="milkdown-editor"></div>
+  </div>
 </template>
 
 <script setup>
-import { ref, onMounted, onBeforeUnmount, watch } from 'vue'
-import { Editor, rootCtx, defaultValueCtx } from '@milkdown/core'
-import { commonmark } from '@milkdown/preset-commonmark'
-import { gfm } from '@milkdown/preset-gfm'
+import { ref, onMounted, onBeforeUnmount } from 'vue'
+import { Editor, rootCtx, defaultValueCtx, editorViewCtx } from '@milkdown/core'
+import { commonmark, toggleStrongCommand, toggleEmphasisCommand, toggleInlineCodeCommand, wrapInHeadingCommand, wrapInBulletListCommand, wrapInOrderedListCommand, wrapInBlockquoteCommand, insertHrCommand } from '@milkdown/preset-commonmark'
+import { gfm, toggleStrikethroughCommand } from '@milkdown/preset-gfm'
 import { listener, listenerCtx } from '@milkdown/plugin-listener'
+import { callCommand } from '@milkdown/utils'
 import { nord } from '@milkdown/theme-nord'
 import '@milkdown/theme-nord/style.css'
 
@@ -21,6 +40,23 @@ const editorRoot = ref(null)
 let editorInstance = null
 let suppressUpdate = false
 
+const commands = {
+  ToggleBold: toggleStrongCommand.key,
+  ToggleItalic: toggleEmphasisCommand.key,
+  ToggleStrikethrough: toggleStrikethroughCommand.key,
+  ToggleInlineCode: toggleInlineCodeCommand.key,
+  WrapInBulletList: wrapInBulletListCommand.key,
+  WrapInOrderedList: wrapInOrderedListCommand.key,
+  TurnIntoBlockquote: wrapInBlockquoteCommand.key,
+  InsertHr: insertHrCommand.key,
+  WrapInHeading: wrapInHeadingCommand.key,
+}
+
+function cmd(name, payload) {
+  if (!editorInstance) return
+  editorInstance.action(callCommand(commands[name], payload))
+}
+
 onMounted(async () => {
   editorInstance = await Editor.make()
     .config((ctx) => {
@@ -41,13 +77,6 @@ onMounted(async () => {
     .create()
 })
 
-watch(() => props.modelValue, (newVal) => {
-  if (suppressUpdate || !editorInstance) return
-  // Only update if content actually differs (avoid cursor jump)
-  // For now, we don't force-update the editor from outside
-  // since the user is typing in it directly
-})
-
 onBeforeUnmount(() => {
   if (editorInstance) {
     editorInstance.destroy()
@@ -56,8 +85,40 @@ onBeforeUnmount(() => {
 </script>
 
 <style>
-.milkdown-editor {
+.milkdown-wrap {
+  display: flex;
+  flex-direction: column;
   height: 100%;
+}
+.milkdown-toolbar {
+  display: flex;
+  gap: 2px;
+  padding: 6px 12px;
+  border-bottom: 1px solid var(--border, #313244);
+  background: var(--bg-secondary, #181825);
+  flex-shrink: 0;
+}
+.milkdown-toolbar button {
+  background: transparent;
+  border: 1px solid transparent;
+  color: var(--text, #cdd6f4);
+  padding: 4px 8px;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 13px;
+  min-width: 28px;
+}
+.milkdown-toolbar button:hover {
+  background: var(--bg-hover, #313244);
+  border-color: var(--border, #313244);
+}
+.milkdown-toolbar .sep {
+  width: 1px;
+  background: var(--border, #313244);
+  margin: 2px 6px;
+}
+.milkdown-editor {
+  flex: 1;
   overflow-y: auto;
 }
 .milkdown-editor .milkdown {