Fix project/milestone association and redesign AppHeader navigation

Backend:
- routes/tasks.py: POST + PUT were silently dropping project_id,
  milestone_id, parent_id from request body — root cause of association
  not saving from the task editor
- routes/tasks.py: GET /api/tasks/:id now includes parent_title in
  response (secondary lookup when parent_id is set)
- routes/notes.py: add PATCH /api/notes/:id for partial updates (used
  by sub-task status toggle; PUT already existed but PATCH was missing)
- routes/projects.py: GET /api/projects/:id/notes now fetches milestone
  IDs and passes them via milestone_ids so tasks assigned to a milestone
  (but lacking project_id) are included in the project view
- services/notes.py: create_note() auto-sets project_id from milestone
  when milestone_id is provided and project_id is omitted; list_notes()
  gains milestone_ids param — when combined with project_id uses OR
  condition (project_id=X OR milestone_id IN (...))

Frontend:
- NoteEditorView: add MilestoneSelector; milestone resets when project
  changes; all save paths (save/create/auto-save) include milestone_id
- stores/notes.ts: add milestone_id to createNote + updateNote types
- TaskEditorView: sub-tasks now inherit milestone_id from parent task
- AppHeader: three-zone layout — brand left, Notes/Projects/Tasks/Chat
  centered (absolute positioning), right rail with status/theme/? and
  gear dropdown containing Settings/Users/Logs; mobile dropdown unchanged

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

frontend/src/components/AppHeader.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { ref, computed } from "vue";
+import { ref, computed, onMounted, onUnmounted } from "vue";
 import { useRouter } from "vue-router";
 import { useTheme } from "@/composables/useTheme";
 import { useShortcuts } from "@/composables/useShortcuts";
@@ -12,7 +12,10 @@ const { toggleShortcuts } = useShortcuts();
 const authStore = useAuthStore();
 const chatStore = useChatStore();
 const router = useRouter();
+
 const mobileMenuOpen = ref(false);
+const gearOpen = ref(false);
+const gearMenuRef = ref<HTMLElement | null>(null);
 
 const statusShortLabel = computed(() => {
   if (chatStore.ollamaStatus === "unavailable") return "Offline";
@@ -45,59 +48,116 @@ function toggleMobileMenu() {
   mobileMenuOpen.value = !mobileMenuOpen.value;
 }
 
+function toggleGear() {
+  gearOpen.value = !gearOpen.value;
+}
+
+function handleClickOutside(e: MouseEvent) {
+  if (gearMenuRef.value && !gearMenuRef.value.contains(e.target as Node)) {
+    gearOpen.value = false;
+  }
+}
+
 async function handleLogout() {
   await authStore.logout();
   mobileMenuOpen.value = false;
   router.push("/login");
 }
 
-// Close mobile menu on route change
 router.afterEach(() => {
   mobileMenuOpen.value = false;
+  gearOpen.value = false;
 });
+
+onMounted(() => document.addEventListener("click", handleClickOutside));
+onUnmounted(() => document.removeEventListener("click", handleClickOutside));
 </script>
 
 <template>
   <header class="app-header">
     <nav class="nav">
+      <!-- Left: brand -->
       <router-link to="/" class="nav-brand">
         <AppLogo />
         Fabled Assistant
       </router-link>
 
-      <button class="hamburger" @click="toggleMobileMenu" aria-label="Toggle menu">
-        <span class="hamburger-line"></span>
-        <span class="hamburger-line"></span>
-        <span class="hamburger-line"></span>
-      </button>
-
-      <div class="nav-links" :class="{ open: mobileMenuOpen }">
+      <!-- Center: primary navigation (desktop) -->
+      <div class="nav-center">
         <router-link to="/notes" class="nav-link">Notes</router-link>
         <router-link to="/projects" class="nav-link">Projects</router-link>
         <router-link to="/tasks" class="nav-link">Tasks</router-link>
         <router-link to="/chat" class="nav-link">Chat</router-link>
-        <router-link to="/settings" class="nav-link">Settings</router-link>
-        <router-link v-if="authStore.isAdmin" to="/admin/users" class="nav-link">Users</router-link>
-        <router-link v-if="authStore.isAdmin" to="/admin/logs" class="nav-link">Logs</router-link>
+      </div>
+
+      <!-- Right: status + utilities + gear + user -->
+      <div class="nav-right">
         <span class="status-indicator" :class="statusClass" :title="statusLabel">
           <span class="status-dot"></span>
           <span class="status-text">{{ statusShortLabel }}</span>
         </span>
-        <button class="btn-shortcuts" @click="toggleShortcuts" title="Keyboard shortcuts (?)">
-          ?
-        </button>
-        <button class="theme-toggle" @click="toggleTheme" :title="`Switch to ${theme === 'dark' ? 'light' : 'dark'} mode`">
+
+        <button class="btn-icon" @click="toggleShortcuts" title="Keyboard shortcuts (?)">?</button>
+
+        <button class="btn-icon" @click="toggleTheme" :title="`Switch to ${theme === 'dark' ? 'light' : 'dark'} mode`">
           {{ theme === "dark" ? "\u2600" : "\u263E" }}
         </button>
+
+        <!-- Gear dropdown -->
+        <div class="gear-menu" ref="gearMenuRef">
+          <button class="btn-icon btn-gear" @click.stop="toggleGear" :class="{ active: gearOpen }" title="Settings">
+            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+              <circle cx="12" cy="12" r="3"/>
+              <path d="M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 0 1-2.83 2.83l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-4 0v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 0 1-2.83-2.83l.06-.06A1.65 1.65 0 0 0 4.68 15a1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1 0-4h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 0 1 2.83-2.83l.06.06A1.65 1.65 0 0 0 9 4.68a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 4 0v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 0 1 2.83 2.83l-.06.06A1.65 1.65 0 0 0 19.4 9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 0 4h-.09a1.65 1.65 0 0 0-1.51 1z"/>
+            </svg>
+          </button>
+          <div v-if="gearOpen" class="gear-dropdown">
+            <router-link to="/settings" class="gear-item">Settings</router-link>
+            <router-link v-if="authStore.isAdmin" to="/admin/users" class="gear-item">Users</router-link>
+            <router-link v-if="authStore.isAdmin" to="/admin/logs" class="gear-item">Logs</router-link>
+          </div>
+        </div>
+
         <div class="user-info">
           <span class="username">{{ authStore.user?.username }}</span>
           <span v-if="authStore.isAdmin" class="admin-badge">admin</span>
-          <button class="btn-logout" @click="handleLogout" title="Sign out">
-            Sign out
-          </button>
+          <button class="btn-logout" @click="handleLogout" title="Sign out">Sign out</button>
         </div>
+
+        <!-- Hamburger (mobile only) -->
+        <button class="hamburger" @click="toggleMobileMenu" aria-label="Toggle menu">
+          <span class="hamburger-line"></span>
+          <span class="hamburger-line"></span>
+          <span class="hamburger-line"></span>
+        </button>
       </div>
     </nav>
+
+    <!-- Mobile dropdown -->
+    <div v-if="mobileMenuOpen" class="mobile-menu">
+      <router-link to="/notes" class="nav-link">Notes</router-link>
+      <router-link to="/projects" class="nav-link">Projects</router-link>
+      <router-link to="/tasks" class="nav-link">Tasks</router-link>
+      <router-link to="/chat" class="nav-link">Chat</router-link>
+      <div class="mobile-divider"></div>
+      <router-link to="/settings" class="nav-link">Settings</router-link>
+      <router-link v-if="authStore.isAdmin" to="/admin/users" class="nav-link">Users</router-link>
+      <router-link v-if="authStore.isAdmin" to="/admin/logs" class="nav-link">Logs</router-link>
+      <div class="mobile-divider"></div>
+      <div class="mobile-actions">
+        <span class="status-indicator" :class="statusClass" :title="statusLabel">
+          <span class="status-dot"></span>
+          <span class="status-text">{{ statusShortLabel }}</span>
+        </span>
+        <button class="btn-icon" @click="toggleShortcuts">?</button>
+        <button class="btn-icon" @click="toggleTheme">{{ theme === "dark" ? "\u2600" : "\u263E" }}</button>
+      </div>
+      <div class="mobile-user">
+        <span class="username">{{ authStore.user?.username }}</span>
+        <span v-if="authStore.isAdmin" class="admin-badge">admin</span>
+        <button class="btn-logout" @click="handleLogout">Sign out</button>
+      </div>
+    </div>
   </header>
 </template>
 
@@ -105,13 +165,17 @@ router.afterEach(() => {
 .app-header {
   background: var(--color-bg-secondary);
   border-bottom: 1px solid var(--color-border);
+  position: relative;
 }
 .nav {
   padding: 0.5rem 1.25rem;
   display: flex;
   align-items: center;
   justify-content: space-between;
+  position: relative;
 }
+
+/* Left */
 .nav-brand {
   display: flex;
   align-items: center;
@@ -120,28 +184,27 @@ router.afterEach(() => {
   font-size: 1.1rem;
   color: var(--color-primary);
   text-decoration: none;
+  flex-shrink: 0;
 }
-.hamburger {
-  display: none;
-  background: none;
-  border: none;
-  cursor: pointer;
-  padding: 0.5rem;
-  flex-direction: column;
-  gap: 4px;
+
+/* Center — absolutely positioned so it's truly centered regardless of side widths */
+.nav-center {
+  position: absolute;
+  left: 50%;
+  transform: translateX(-50%);
+  display: flex;
+  align-items: center;
+  gap: 0.1rem;
 }
-.hamburger-line {
-  display: block;
-  width: 20px;
-  height: 2px;
-  background: var(--color-text);
-  border-radius: 1px;
-}
-.nav-links {
+
+/* Right */
+.nav-right {
   display: flex;
   align-items: center;
   gap: 0.25rem;
+  flex-shrink: 0;
 }
+
 .nav-link {
   color: var(--color-text-secondary);
   text-decoration: none;
@@ -159,12 +222,14 @@ router.afterEach(() => {
   background: var(--color-bg-card);
   font-weight: 600;
 }
+
+/* Status indicator */
 .status-indicator {
   display: flex;
   align-items: center;
   gap: 0.3rem;
-  margin-left: 0.5rem;
   cursor: default;
+  padding: 0 0.25rem;
 }
 .status-dot {
   width: 8px;
@@ -177,60 +242,79 @@ router.afterEach(() => {
   font-weight: 500;
   color: var(--color-text-muted);
 }
-.status-green .status-dot {
-  background: var(--color-success, #2ecc71);
-}
-.status-yellow .status-dot {
-  background: var(--color-warning, #f59e0b);
-  animation: pulse-dot 2s infinite;
-}
-.status-orange .status-dot {
-  background: #f97316;
-}
-.status-red .status-dot {
-  background: var(--color-danger, #e74c3c);
-}
-.status-gray .status-dot {
-  background: var(--color-text-muted);
-  animation: pulse-dot 2s infinite;
-}
+.status-green .status-dot  { background: var(--color-success, #2ecc71); }
+.status-yellow .status-dot { background: var(--color-warning, #f59e0b); animation: pulse-dot 2s infinite; }
+.status-orange .status-dot { background: #f97316; }
+.status-red .status-dot    { background: var(--color-danger, #e74c3c); }
+.status-gray .status-dot   { background: var(--color-text-muted); animation: pulse-dot 2s infinite; }
 @keyframes pulse-dot {
   0%, 100% { opacity: 1; }
   50% { opacity: 0.3; }
 }
-.btn-shortcuts {
+
+/* Icon buttons (?, theme, gear) */
+.btn-icon {
   background: none;
   border: 1px solid var(--color-border);
   border-radius: var(--radius-sm);
-  padding: 0.25rem 0.55rem;
+  padding: 0.25rem 0.45rem;
   cursor: pointer;
-  font-size: 0.9rem;
-  font-weight: 700;
+  font-size: 0.95rem;
   color: var(--color-text-muted);
   line-height: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
 }
-.btn-shortcuts:hover {
+.btn-icon:hover,
+.btn-icon.active {
   background: var(--color-bg-card);
   color: var(--color-text);
+  border-color: var(--color-primary);
 }
-.theme-toggle {
-  background: none;
+
+/* Gear dropdown */
+.gear-menu {
+  position: relative;
+}
+.gear-dropdown {
+  position: absolute;
+  top: calc(100% + 6px);
+  right: 0;
+  background: var(--color-bg-card);
   border: 1px solid var(--color-border);
-  border-radius: var(--radius-sm);
-  padding: 0.25rem 0.5rem;
-  cursor: pointer;
-  font-size: 1.1rem;
-  color: var(--color-text);
-  line-height: 1;
+  border-radius: var(--radius-md);
+  box-shadow: 0 4px 16px var(--color-shadow, rgba(0,0,0,0.15));
+  min-width: 140px;
+  z-index: 200;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
 }
-.theme-toggle:hover {
-  background: var(--color-bg-card);
+.gear-item {
+  padding: 0.55rem 0.9rem;
+  font-size: 0.875rem;
+  color: var(--color-text-secondary);
+  text-decoration: none;
+  transition: background 0.12s, color 0.12s;
 }
+.gear-item:hover {
+  background: var(--color-bg-secondary);
+  color: var(--color-primary);
+}
+.gear-item.router-link-active {
+  color: var(--color-primary);
+  font-weight: 600;
+}
+
+/* User info */
 .user-info {
   display: flex;
   align-items: center;
   gap: 0.4rem;
-  margin-left: 0.5rem;
+  margin-left: 0.25rem;
+  padding-left: 0.5rem;
+  border-left: 1px solid var(--color-border);
 }
 .username {
   font-size: 0.85rem;
@@ -255,54 +339,81 @@ router.afterEach(() => {
   cursor: pointer;
   font-size: 0.8rem;
   color: var(--color-text-secondary);
+  font-family: inherit;
 }
 .btn-logout:hover {
   color: var(--color-danger);
   border-color: var(--color-danger);
 }
 
+/* Hamburger — mobile only */
+.hamburger {
+  display: none;
+  background: none;
+  border: none;
+  cursor: pointer;
+  padding: 0.5rem;
+  flex-direction: column;
+  gap: 4px;
+  margin-left: 0.25rem;
+}
+.hamburger-line {
+  display: block;
+  width: 20px;
+  height: 2px;
+  background: var(--color-text);
+  border-radius: 1px;
+}
+
+/* Mobile menu */
+.mobile-menu {
+  display: flex;
+  flex-direction: column;
+  padding: 0.5rem 1rem 0.75rem;
+  border-top: 1px solid var(--color-border);
+  background: var(--color-bg-secondary);
+  gap: 0.1rem;
+}
+.mobile-divider {
+  height: 1px;
+  background: var(--color-border);
+  margin: 0.4rem 0;
+}
+.mobile-actions {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.25rem 0;
+}
+.mobile-user {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding-top: 0.4rem;
+  border-top: 1px solid var(--color-border);
+  margin-top: 0.25rem;
+}
+
 @media (max-width: 768px) {
+  .nav-center {
+    display: none;
+  }
+  .status-indicator,
+  .btn-icon,
+  .user-info {
+    display: none;
+  }
   .hamburger {
     display: flex;
   }
-  .nav-links {
-    display: none;
-    position: absolute;
-    top: 100%;
-    left: 0;
-    right: 0;
-    background: var(--color-bg-secondary);
-    border-bottom: 1px solid var(--color-border);
-    flex-direction: column;
-    padding: 0.75rem 1rem;
-    gap: 0.25rem;
-    z-index: 100;
-  }
-  .nav-links.open {
-    display: flex;
-  }
-  .nav-link {
+  .mobile-menu .nav-link {
     padding: 0.5rem 0.75rem;
     min-height: 44px;
     display: flex;
     align-items: center;
   }
-  .status-indicator {
-    margin-left: 0;
-  }
-  .user-info {
-    margin-left: 0;
-    margin-top: 0.25rem;
-    padding-top: 0.5rem;
-    border-top: 1px solid var(--color-border);
-    width: 100%;
-  }
-  .theme-toggle,
-  .btn-logout {
-    min-height: 44px;
-    display: flex;
-    align-items: center;
-    justify-content: center;
+  .mobile-user .btn-logout {
+    min-height: 36px;
   }
 }
 </style>