feat: onglets Réglages & Aide + icône Gitea

Réglages : préférences (langue, notifications push + test), gestion complète des tokens d'accès (liste/création/révocation, garde anti lock-out sur le dernier token), URL Gitea configurable, infos serveur en lecture seule (port/bind/origines/VAPID + flags CLI). Aide : documentation bilingue EN/FR de toutes les fonctionnalités, avec recherche. Icône Gitea (lien externe) dans la nav (sidebar + MoreSheet mobile).

Backend : routes /api/v1/auth/tokens (GET/POST/DELETE) + tokenId dans /me ; routes/settings.ts (GET/PATCH, allow-list stricte gitea_url, aucun secret exposé, URL validée http/https anti-XSS) ; AuthService.listTokens/revokeToken (transaction). Front : NavItem gère les liens externes, nav primaire/secondaire, store settings, vues SettingsView/HelpView.

236 tests verts (+15 nouveaux : auth-tokens, settings-routes).

packages/web/src/views/HelpView.vue

@@ -0,0 +1,68 @@
+<template>
+  <div class="flex flex-col gap-4">
+    <PageHeader :title="t('help.title')">
+      <template #search>
+        <div class="relative">
+          <Search :size="15" class="pointer-events-none absolute left-2.5 top-1/2 -translate-y-1/2 text-zinc-500" />
+          <input v-model="query" class="input pl-8" :placeholder="t('help.searchPlaceholder')" />
+        </div>
+      </template>
+    </PageHeader>
+    <p class="text-sm text-zinc-400">{{ t('help.intro') }}</p>
+
+    <section v-for="section in filtered" :key="section.id" class="card flex flex-col gap-3">
+      <header class="flex items-center gap-2">
+        <component :is="iconFor(section.id)" :size="18" class="text-emerald-400" :stroke-width="1.75" />
+        <h2 class="text-sm font-semibold text-zinc-100">{{ section.title }}</h2>
+      </header>
+      <p class="text-xs text-zinc-500">{{ section.blurb }}</p>
+      <dl class="flex flex-col gap-2">
+        <div v-for="(item, i) in section.items" :key="i" class="card-inset">
+          <dt class="text-sm font-medium text-zinc-200">{{ item.title }}</dt>
+          <dd class="mt-0.5 text-sm leading-relaxed text-zinc-400">{{ item.body }}</dd>
+        </div>
+      </dl>
+    </section>
+
+    <EmptyState v-if="!filtered.length" :icon="SearchX" :title="t('help.noMatch')" />
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, ref, type Component } from 'vue';
+import { useI18n } from 'vue-i18n';
+import { Boxes, Command, GitBranch, KeyRound, Puzzle, Search, SearchX, Settings, Smartphone, TerminalSquare } from '@lucide/vue';
+import type { AppLocale } from '../i18n';
+import { helpSections, type HelpSection } from './help-content';
+import PageHeader from '../components/layout/PageHeader.vue';
+import EmptyState from '../components/ui/EmptyState.vue';
+
+const { t, locale } = useI18n();
+const query = ref('');
+
+const ICONS: Record<string, Component> = {
+  gettingStarted: KeyRound,
+  worktrees: GitBranch,
+  sessions: TerminalSquare,
+  mobile: Smartphone,
+  groups: Boxes,
+  productivity: Command,
+  settings: Settings,
+  integrations: Puzzle,
+};
+const iconFor = (id: string): Component => ICONS[id] ?? KeyRound;
+
+const sections = computed<HelpSection[]>(() => helpSections[locale.value as AppLocale] ?? helpSections.en);
+
+const filtered = computed<HelpSection[]>(() => {
+  const q = query.value.trim().toLowerCase();
+  if (!q) return sections.value;
+  return sections.value
+    .map((s) => {
+      const sectionMatches = (s.title + ' ' + s.blurb).toLowerCase().includes(q);
+      const items = sectionMatches ? s.items : s.items.filter((it) => (it.title + ' ' + it.body).toLowerCase().includes(q));
+      return items.length ? { ...s, items } : null;
+    })
+    .filter((s): s is HelpSection => s !== null);
+});
+</script>