frontend/src/features/chat/ChatView.vue

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+<script setup lang="ts">
+import { computed, onMounted, ref, watch } from 'vue'
+import { useRouter } from 'vue-router'
+import type { Citation } from '@/contracts'
+import { useChatStore } from '@/stores/chat'
+import { useEditorStore } from '@/stores/editor'
+import { useProviderStore } from '@/stores/provider'
+import { useSkillStore } from '@/stores/skill'
+import { useWorkspaceStore } from '@/stores/workspace'
+
+const chatStore = useChatStore()
+const providerStore = useProviderStore()
+const skillStore = useSkillStore()
+const workspaceStore = useWorkspaceStore()
+const editorStore = useEditorStore()
+const router = useRouter()
+const loadError = ref('')
+
+const availableModels = computed(() => providerStore.modelsByProvider[chatStore.selectedProviderId] ?? [])
+
+onMounted(async () => {
+  try {
+    await Promise.all([providerStore.loadProviders(), skillStore.loadSkills()])
+    await providerStore.loadModels(chatStore.selectedProviderId)
+  } catch (error) {
+    loadError.value = error instanceof Error ? error.message : '无法加载 AI 配置，当前展示本地数据。'
+  }
+})
+
+watch(() => chatStore.selectedProviderId, async (providerId) => {
+  try {
+    await providerStore.loadModels(providerId)
+    const firstModel = providerStore.modelsByProvider[providerId]?.[0]
+    if (firstModel) chatStore.selectedModel = firstModel.model_id
+  } catch (error) {
+    loadError.value = error instanceof Error ? error.message : '模型列表加载失败'
+  }
+})
+
+function send() { void chatStore.sendMessage(chatStore.inputText) }
+
+async function openCitation(citation: Citation) {
+  workspaceStore.openFile(citation.file_path)
+  await editorStore.loadFile(citation.file_path)
+  editorStore.highlightBlock(citation.block_id)
+  await router.push('/workspace')
+}
+</script>
+
+<template>
+  <section class="chat-page">
+    <header class="chat-toolbar">
+      <div class="field compact"><label>Provider</label><select v-model="chatStore.selectedProviderId" class="select">
+        <option v-for="provider in providerStore.enabledProviders" :key="provider.provider_id" :value="provider.provider_id">{{ provider.name }}</option>
+      </select></div>
+      <div class="field compact"><label>Model</label><select v-model="chatStore.selectedModel" class="select">
+        <option v-for="model in availableModels" :key="model.model_id" :value="model.model_id">{{ model.name }}</option>
+      </select></div>
+      <div class="field compact"><label>Skill</label><select v-model="chatStore.selectedSkillId" class="select">
+        <option :value="null">不使用 Skill</option><option v-for="skill in skillStore.enabledSkills" :key="skill.skill_id" :value="skill.skill_id">{{ skill.name }}</option>
+      </select></div>
+      <label class="rag-toggle"><input v-model="chatStore.useRag" type="checkbox" /> 使用知识库</label>
+    </header>
+    <div v-if="loadError" class="error-banner chat-error">{{ loadError }}</div>
+    <main class="message-timeline">
+      <div v-if="!chatStore.messages.length" class="empty-state"><div><strong>开始一段知识对话</strong><p>可以直接提问，也可以打开 RAG 让模型基于当前 Vault 回答。</p></div></div>
+      <article v-for="message in chatStore.messages" :key="message.message_id" class="message" :class="message.role">
+        <div class="avatar">{{ message.role === 'user' ? '你' : 'AI' }}</div>
+        <div class="message-body">
+          <div class="message-content">{{ message.content || (chatStore.isStreaming ? '正在思考…' : '') }}</div>
+          <div v-if="message.citations?.length" class="citations">
+            <button v-for="(citation, index) in message.citations" :key="citation.block_id" class="citation-card" @click="openCitation(citation)">
+              <span class="badge info">{{ index + 1 }}</span><span><strong>{{ citation.heading_path || citation.file_path }}</strong><small>{{ citation.content }}</small></span>
+            </button>
+          </div>
+          <time>{{ new Date(message.created_at).toLocaleTimeString() }}</time>
+        </div>
+      </article>
+    </main>
+    <footer class="composer">
+      <textarea v-model="chatStore.inputText" class="textarea" placeholder="输入问题，Ctrl + Enter 发送"
+        @keydown.ctrl.enter.prevent="send" />
+      <div class="composer-actions"><span class="subtle">回答可能包含错误，请核对 Citation。</span>
+        <button v-if="chatStore.isStreaming" class="button-danger" @click="chatStore.stopGeneration">停止</button>
+        <button v-else class="button-primary" :disabled="!chatStore.inputText.trim()" @click="send">发送</button>
+      </div>
+    </footer>
+  </section>
+</template>
+
+<style scoped>
+.chat-page { display: grid; grid-template-rows: auto auto 1fr auto; height: 100%; min-height: 0; background: var(--color-background-primary); }
+.chat-toolbar { display: flex; align-items: end; flex-wrap: wrap; gap: var(--space-md); padding: var(--space-md) var(--space-xl); border-bottom: 1px solid var(--color-border-default); }
+.compact { min-width: 160px; }
+.rag-toggle { display: flex; align-items: center; gap: var(--space-xs); min-height: 36px; color: var(--color-text-secondary); }
+.chat-error { margin: var(--space-md) var(--space-xl) 0; }
+.message-timeline { min-height: 0; overflow: auto; padding: var(--space-xl) max(var(--space-xl), calc((100% - 820px) / 2)); user-select: text; }
+.message { display: grid; grid-template-columns: 36px 1fr; gap: var(--space-md); margin-bottom: var(--space-xl); }
+.avatar { display: grid; place-items: center; width: 34px; height: 34px; border-radius: var(--radius-full); background: var(--color-background-tertiary); font-weight: 700; }
+.assistant .avatar { background: var(--color-accent-soft); color: var(--color-accent-primary); }
+.message-content { white-space: pre-wrap; line-height: var(--line-height-relaxed); }
+.message time { display: block; margin-top: var(--space-sm); color: var(--color-text-tertiary); font-size: var(--font-size-xs); }
+.citations { display: grid; gap: var(--space-sm); margin-top: var(--space-md); }
+.citation-card { display: flex; align-items: flex-start; gap: var(--space-sm); padding: var(--space-sm); border: 1px solid var(--color-border-default); border-radius: var(--radius-md); text-align: left; }
+.citation-card small { display: block; margin-top: 2px; color: var(--color-text-secondary); }
+.composer { padding: var(--space-md) max(var(--space-xl), calc((100% - 820px) / 2)); border-top: 1px solid var(--color-border-default); background: var(--color-surface-primary); }
+.composer .textarea { min-height: 72px; }
+.composer-actions { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); margin-top: var(--space-sm); }
+</style>

frontend/src/features/chat/ConversationListPanel.vue

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+<script setup lang="ts">
+import { useChatStore } from '@/stores/chat'
+
+const chatStore = useChatStore()
+</script>
+
+<template>
+  <div class="sidebar-panel">
+    <button class="button-primary new-button" @click="chatStore.createNewConversation">＋ 新对话</button>
+    <div class="sidebar-list conversation-list">
+      <div v-for="conversation in chatStore.sortedConversations" :key="conversation.conversation_id"
+        class="sidebar-list-item conversation" :class="{ active: chatStore.activeConversationId === conversation.conversation_id }"
+        @click="chatStore.setActiveConversation(conversation.conversation_id)">
+        <div><strong>{{ conversation.title }}</strong><p>{{ conversation.message_count }} 条消息</p></div>
+        <button class="delete" title="删除会话" @click.stop="chatStore.deleteConversation(conversation.conversation_id)">×</button>
+      </div>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.new-button { width: 100%; margin-bottom: var(--space-md); }
+.conversation-list { gap: var(--space-xs); }
+.conversation { display: flex; align-items: center; justify-content: space-between; gap: var(--space-sm); }
+.conversation strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: var(--font-size-sm); }
+.conversation p { color: var(--color-text-tertiary); font-size: var(--font-size-xs); }
+.delete { padding: var(--space-xs); color: var(--color-text-tertiary); }
+</style>