feat: Frontend gap closure — Schedules, Alerts, Migration, Changelog views

Implements missing frontend views and API integrations:

New Views:
- SchedulesView: CRUD for scheduled tasks (restart/announcement/command/plugin_reload)
- MigrationView: Export/import interface with file upload and history tracking
- ChangelogView: Paginated changelog feed with category badges
- ForgotPasswordView: Password reset flow with email submission
- AlertsView: Alert config dashboard with threshold settings and history

Component Updates:
- ErrorBoundary: Global error handler with retry functionality
- DashboardLayout: Mobile responsive sidebar, permission-based nav, new menu items
- ServerInfoView: Complete rewrite for public server info display

Infrastructure:
- useApi: Token refresh interceptor with 401 retry and infinite loop prevention
- plugins store: Implemented all stubbed methods with real API calls
- auth store: Added hasPermission() helper for RBAC UI visibility
- Router: Added new routes with catch-all fallback

Purpose: Closes frontend implementation gaps. Hardens auth flow, improves mobile UX,
enables server automation scheduling, alert configuration, and data migration tools.

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

frontend/src/views/auth/ForgotPasswordView.vue

@@ -0,0 +1,102 @@
+<script setup lang="ts">
+import { ref } from 'vue'
+import { useApi } from '@/composables/useApi'
+import { RouterLink } from 'vue-router'
+import { Mail, ArrowLeft, CheckCircle2, Loader2 } from 'lucide-vue-next'
+
+const api = useApi()
+const email = ref('')
+const isLoading = ref(false)
+const success = ref(false)
+const errorMessage = ref('')
+
+async function handleSubmit() {
+  if (!email.value) return
+
+  isLoading.value = true
+  errorMessage.value = ''
+  try {
+    await api.post('/auth/forgot-password', { email: email.value })
+    success.value = true
+  } catch (err) {
+    errorMessage.value = err instanceof Error ? err.message : 'Failed to send reset email'
+  } finally {
+    isLoading.value = false
+  }
+}
+</script>
+
+<template>
+  <div class="min-h-screen bg-neutral-950 flex items-center justify-center p-6">
+    <div class="w-full max-w-md">
+      <!-- Logo -->
+      <div class="text-center mb-8">
+        <div class="flex items-center justify-center gap-2 mb-2">
+          <img src="/logo.png" alt="Corrosion" class="h-10 w-10" />
+          <h1 class="text-2xl font-bold text-oxide-500 tracking-wider">CORROSION</h1>
+        </div>
+        <p class="text-neutral-500 text-sm">Server Management Platform</p>
+      </div>
+
+      <!-- Card -->
+      <div class="bg-neutral-900 border border-neutral-800 rounded-lg p-8">
+        <div v-if="success" class="text-center space-y-4">
+          <CheckCircle2 class="w-12 h-12 text-green-500 mx-auto" />
+          <h2 class="text-xl font-bold text-neutral-100">Check your email</h2>
+          <p class="text-sm text-neutral-400">
+            We've sent password reset instructions to <strong class="text-neutral-200">{{ email }}</strong>
+          </p>
+          <RouterLink
+            to="/login"
+            class="inline-flex items-center gap-2 text-sm text-oxide-400 hover:text-oxide-300 transition-colors"
+          >
+            <ArrowLeft class="w-4 h-4" />
+            Back to login
+          </RouterLink>
+        </div>
+
+        <form v-else @submit.prevent="handleSubmit" class="space-y-6">
+          <div class="text-center mb-6">
+            <h2 class="text-xl font-bold text-neutral-100 mb-2">Forgot password?</h2>
+            <p class="text-sm text-neutral-400">Enter your email to receive reset instructions</p>
+          </div>
+
+          <div>
+            <label class="block text-sm text-neutral-400 mb-2">Email</label>
+            <div class="relative">
+              <Mail class="absolute left-3 top-1/2 -translate-y-1/2 w-5 h-5 text-neutral-500" />
+              <input
+                v-model="email"
+                type="email"
+                required
+                class="w-full pl-10 pr-4 py-2 bg-neutral-800 border border-neutral-700 rounded-lg text-neutral-200 placeholder-neutral-500 focus:outline-none focus:ring-2 focus:ring-oxide-500"
+                placeholder="admin@example.com"
+              />
+            </div>
+          </div>
+
+          <div v-if="errorMessage" class="p-3 bg-red-500/10 border border-red-500/20 rounded-lg">
+            <p class="text-sm text-red-400">{{ errorMessage }}</p>
+          </div>
+
+          <button
+            type="submit"
+            :disabled="isLoading"
+            class="w-full flex items-center justify-center gap-2 py-2 bg-oxide-500 hover:bg-oxide-600 disabled:opacity-50 text-white font-medium rounded-lg transition-colors"
+          >
+            <Loader2 v-if="isLoading" class="w-5 h-5 animate-spin" />
+            <span>{{ isLoading ? 'Sending...' : 'Send Reset Link' }}</span>
+          </button>
+
+          <RouterLink
+            to="/login"
+            class="flex items-center justify-center gap-2 text-sm text-neutral-400 hover:text-neutral-200 transition-colors"
+          >
+            <ArrowLeft class="w-4 h-4" />
+            Back to login
+          </RouterLink>
+        </form>
+      </div>
+    </div>
+  </div>
+</template>