feat: restore Claude Code CLI backend

Add back Claude Code CLI as a backend option alongside API. Claude
Code's `-p --output-format json` is a documented interface that works
well with prompt mode. API remains the default.

Change-Id: I048936a7d59e6768952e0cb007382f75413d1ba0

README.md

@@ -28,7 +28,16 @@
 3. 将三个文件放入该文件夹
 4. Obsidian → **设置 → 第三方插件 → 已安装插件** → 启用 **Parallel Reader**
 
-### 配置 Provider
+### 选择后端
+
+插件支持两种后端：
+
+| 后端 | 说明 |
+|------|------|
+| **API / Provider**（默认） | 直连 LLM API，支持 20+ provider |
+| **Claude Code CLI** | 通过本地 `claude -p` 调用，复用 Claude Code 登录态 |
+
+### API / Provider 模式
 
 在插件设置中选择一个 Provider preset，填入 API Key 和模型 ID 即可。
 
@@ -43,6 +52,20 @@
 
 Model ID 支持 `provider/model` 写法（如 `anthropic/claude-sonnet-4-6`），匹配当前 preset 时自动剥离前缀。
 
+### Claude Code CLI 模式
+
+切换后端为 **Claude Code CLI**，插件通过 `claude -p --output-format json` 调用本地 Claude Code。
+
+Obsidian 从 GUI 启动时不继承 shell `PATH`，需要在设置中填写 `claude` 的绝对路径：
+
+```bash
+# 查看你的 claude 路径
+which claude
+# 例如：/Users/you/.claude/local/claude
+```
+
+在插件设置的 **CLI 路径** 中填入该路径，点击 **Test** 验证。
+
 ## 命令
 
 | 命令 | 说明 |

main.ts

@@ -3,7 +3,7 @@ import { MarkdownView, Notice, Plugin, requestUrl, TFile } from 'obsidian';
 import { findLineForAnchor } from './src/anchor';
 import { serializeCacheFile, shouldConfirmRegenerate, touchCacheEntry } from './src/cache';
 import { activeIndexAfterCardDelete, removeCardAt, updateCardAt } from './src/cards';
-import { resolveCliPath } from './src/cli';
+import { resolveCliPath, summarizeViaClaudeCode } from './src/cli';
 import {
   classifyGenerationError,
   type GenerationJob,
@@ -57,15 +57,19 @@ async function summarizeDocument(
 ) {
   const { system, user } = buildPrompts(content, settings);
   let cards: RawCard[];
-  const useStreaming = supportsStreaming(settings);
-  const abortController = useStreaming ? new AbortController() : null;
-  if (abortController) {
-    job.onCancel(() => abortController.abort());
-  }
-  if (useStreaming) {
-    cards = await summarizeViaApiStreaming(system, user, settings, onStreamProgress, abortController!.signal);
+  if (settings.backend === 'claude-code') {
+    cards = await summarizeViaClaudeCode(system, user, settings, job);
   } else {
-    cards = await summarizeViaApi(requestUrl, system, user, settings);
+    const useStreaming = supportsStreaming(settings);
+    const abortController = useStreaming ? new AbortController() : null;
+    if (abortController) {
+      job.onCancel(() => abortController.abort());
+    }
+    if (useStreaming) {
+      cards = await summarizeViaApiStreaming(system, user, settings, onStreamProgress, abortController!.signal);
+    } else {
+      cards = await summarizeViaApi(requestUrl, system, user, settings);
+    }
   }
   const resolved: ResolvedCard[] = cards.map((c) => ({
     title: c.title,

src/settings-tab.ts

@@ -1,6 +1,7 @@
 'use strict';
 
 import { type App, Notice, type Plugin, PluginSettingTab, requestUrl, Setting } from 'obsidian';
+import { resolveCliPath, runCli } from './cli';
 import { testApiBackend } from './providers';
 import {
   API_AUTH_TYPES,
@@ -17,6 +18,11 @@ import {
 import type { PluginHost, PluginSettings } from './types';
 
 async function testBackend(settings: PluginSettings) {
+  if (settings.backend === 'claude-code') {
+    const cmd = resolveCliPath('claude', settings.cliPath);
+    const { stdout } = await runCli(cmd, ['--version'], '', 10000);
+    return `claude @ ${cmd}\n${stdout.trim()}`;
+  }
   return testApiBackend(requestUrl, settings);
 }
 
@@ -48,9 +54,46 @@ export class ParallelReaderSettingTab extends PluginSettingTab {
         });
       });
 
-    containerEl.createEl('h3', { text: tr('apiProviderHeader') });
+    new Setting(containerEl)
+      .setName(tr('settingBackendName'))
+      .setDesc(tr('settingBackendDesc'))
+      .addDropdown((d) =>
+        d
+          .addOption('api', 'API / Provider')
+          .addOption('claude-code', 'Claude Code CLI')
+          .setValue(this.plugin.settings.backend)
+          .onChange(async (v) => {
+            this.plugin.settings.backend = v;
+            if (v === 'api' && !this.plugin.settings.apiBaseUrl) {
+              applyApiProviderPreset(this.plugin.settings, this.plugin.settings.apiProvider || 'anthropic');
+            }
+            await this.plugin.saveSettings();
+            this.display();
+          }),
+      );
 
-    {
+    const isCliBacked = this.plugin.settings.backend === 'claude-code';
+
+    if (isCliBacked) {
+      new Setting(containerEl)
+        .setName(tr('settingCliPathName'))
+        .setDesc(tr('settingCliPathDesc'))
+        .addText((t) =>
+          t
+            .setPlaceholder(tr('settingCliPathPlaceholder'))
+            .setValue(this.plugin.settings.cliPath)
+            .onChange(async (v) => {
+              this.plugin.settings.cliPath = v.trim();
+              this.plugin.saveSettingsDebounced();
+            }),
+        );
+    }
+
+    if (!isCliBacked) {
+      containerEl.createEl('h3', { text: tr('apiProviderHeader') });
+    }
+
+    if (!isCliBacked) {
       const preset = getApiPreset(this.plugin.settings);
       new Setting(containerEl)
         .setName(tr('settingProviderPresetName'))
@@ -173,13 +216,13 @@ export class ParallelReaderSettingTab extends PluginSettingTab {
 
     new Setting(containerEl)
       .setName(tr('settingModelName'))
-      .setDesc(tr('settingModelDescApi'))
+      .setDesc(isCliBacked ? tr('settingModelDescCli') : tr('settingModelDescApi'))
       .addText((t) =>
         t
-          .setPlaceholder(getApiPreset(this.plugin.settings).model || 'model-id')
+          .setPlaceholder(isCliBacked ? DEFAULT_SETTINGS.model : getApiPreset(this.plugin.settings).model || 'model-id')
           .setValue(this.plugin.settings.model)
           .onChange(async (v) => {
-            this.plugin.settings.model = v.trim();
+            this.plugin.settings.model = v.trim() || (isCliBacked ? DEFAULT_SETTINGS.model : '');
             this.plugin.saveSettingsDebounced();
           }),
       );
@@ -259,7 +302,7 @@ export class ParallelReaderSettingTab extends PluginSettingTab {
 
     new Setting(containerEl)
       .setName(tr('settingTestBackendName'))
-      .setDesc(tr('settingTestBackendDescApi'))
+      .setDesc(isCliBacked ? tr('settingTestBackendDescCli') : tr('settingTestBackendDescApi'))
       .addButton((b) =>
         b.setButtonText('Test').onClick(async () => {
           try {