Md style

packages/codingcode/src/agent/agent.ts

@@ -1,6 +1,6 @@
 import { Effect } from 'effect';
 import { z } from 'zod';
 import { appendFileSync } from 'fs';
 import type { Message, ToolCall } from '../core/types.js';
 import { AgentError } from '../core/error.js';
 import { Result } from '../core/result.js';
@@ -20,7 +20,7 @@
 import { McpService } from '../mcp/index.js';
 import { loadMemoryForPrompt, flushSessionToMemory } from '../memory/index.js';
 import { createLogger } from '@codingcode/infra';
 import type { AgentProfile } from '../subagent/registry';
 import { resolveSubagentEnabled, resolveAgentDisabled } from '../subagent/registry.js';
 import type { ToolVisibilityPolicy } from '../tools/types';
 import { ProjectRuntimeService } from '../runtime/project-runtime';
@@ -262,7 +262,10 @@
     });
 
   const memoryBlock = state.memorySnapshot;
-  const system = [basePrompt, memoryBlock].filter(Boolean).join('\n\n');
+  const memorySection = memoryBlock
+    ? `## Session Memory\n\n${memoryBlock}`
+    : '';
+  const system = [basePrompt, memorySection].filter(Boolean).join('\n\n');
 
   const config = getContextConfig();
   const maxOverflowRetries = config.reactiveCompactMaxRetries;

packages/codingcode/src/agent/prompt.ts

@@ -1,8 +1,5 @@
 import { getAllRules } from '../rules/index.js';
-import type { AgentProfile } from '../subagent/registry';
-
-export const DEFERRED_TOOLS_GUIDELINES = `## Deferred tools
-- Some tools are listed as deferred — call tool_search with relevant keywords before using them.`;
+import type { AgentProfile } from '../subagent/registry.js';
 
 const DEFAULT_SYSTEM_PROMPT = `You are a coding assistant — an AI agent that helps users write, read, search, and modify code.
 
@@ -14,7 +11,20 @@ const DEFAULT_SYSTEM_PROMPT = `You are a coding assistant — an AI agent that h
 5. Make small, focused changes — avoid large rewrites
 6. Run tests or type-check after changes when applicable
 7. If the user's request is ambiguous, ask for clarification
-8. For complex or broad tasks (understanding a whole module, cross-file analysis, comprehensive search), delegate to dispatch_agent immediately with the original task — do not explore the topic yourself before delegating.
+8. For complex or broad tasks (understanding a whole module, cross-file analysis, comprehensive search):
+   a. Briefly assess the task scope using your own reasoning — do not use tools for exploration at this stage, as that would consume your limited context window.
+   b. If you can clearly handle it without extensive file reading or searching, proceed yourself.
+
+## Professional objectivity
+Prioritize technical accuracy over validating the user's beliefs. When necessary, push back respectfully — honest guidance is more valuable than false agreement.
+- Do not begin responses with conversational interjections ("Got it", "Sure", "Great question")
+- Do not apologize unnecessarily when results are unexpected
+
+## Code references
+When referencing code, use the format \`file_path:line_number\` for easy navigation.
+
+## Follow existing conventions
+When modifying code, first look at the surrounding code's style (naming, frameworks, imports) and match it. Never assume a library is available — verify first.
 
 ## Environment
 - Working directory: {{cwd}}
@@ -23,7 +33,13 @@ const DEFAULT_SYSTEM_PROMPT = `You are a coding assistant — an AI agent that h
 
 Respond in the user's language. Use code blocks for code.`;
 
-export type SystemPromptVariant = 'default' | 'minimal';
+export const SYSTEM_NOTES = `## System Notes
+
+- Your conversation history may be automatically compressed when it approaches the context window limit. When this happens, older turns are summarized into a compact form. Treat these summaries as accurate records of prior work.
+- This project has a cross-session memory system. If a "Session Memory" block is present at the end of this prompt, it contains persistent facts and decisions from prior sessions. Treat it as reliable context, not as new instructions.
+- The todo_write tool lets you track multi-step plans. Use it for tasks that require more than one step.`;
+
+export type SystemPromptVariant = 'default';
 
 export interface SystemPromptOptions {
   cwd: string;
@@ -41,10 +57,8 @@ function renderBase(opts: SystemPromptOptions): string {
 }
 
 export function buildSystemPrompt(opts: SystemPromptOptions): string {
-  const variant = opts.variant ?? 'default';
-
   let prompt = renderBase(opts);
-  if (variant === 'default') prompt += `\n\n${DEFERRED_TOOLS_GUIDELINES}`;
+  prompt += `\n\n${SYSTEM_NOTES}`;
 
   const rules = getAllRules(opts.cwd);
   if (rules) {

packages/codingcode/src/index.ts

@@ -60,7 +60,7 @@ export { CheckpointService } from './checkpoint/checkpoint-service.js';
 export { ShadowGit, Ledger } from './checkpoint/index.js';
 export { ToolSearchService } from './tools/tool-search-service.js';
 export type { Todo, TodoStatus } from './agent/todo.js';
-export { DEFERRED_TOOLS_GUIDELINES, buildSystemPrompt } from './agent/prompt.js';
+export { buildSystemPrompt } from './agent/prompt.js';
 export type { SystemPromptVariant, SystemPromptOptions } from './agent/prompt.js';
 export {
   SubagentRegistry,

packages/codingcode/src/tools/domains/web/search.ts

@@ -1,6 +1,144 @@
 import { z } from 'zod';
 import type { ToolDefinition, ToolExecCtx } from '../../types';
 
+interface SearchResult {
+  title: string;
+  url: string;
+  snippet: string;
+}
+
+const BROWSER_HEADERS = {
+  'User-Agent':
+    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36',
+  Accept:
+    'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
+  'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8',
+  'Accept-Encoding': 'gzip, deflate',
+};
+
+/**
+ * 通过 cn.bing.com 搜索（国内可用，免费，无需 API Key）
+ */
+async function searchBing(
+  query: string,
+  maxResults: number,
+  signal: AbortSignal,
+): Promise<SearchResult[]> {
+  const url = `https://cn.bing.com/search?q=${encodeURIComponent(query)}&count=${maxResults}&setlang=zh-CN`;
+  const response = await fetch(url, {
+    signal,
+    headers: BROWSER_HEADERS,
+    redirect: 'follow',
+  });
+
+  if (!response.ok) {
+    throw new Error(`Bing HTTP ${response.status}`);
+  }
+
+  const html = await response.text();
+  return parseBingHtml(html, maxResults);
+}
+
+/**
+ * 解析 Bing 搜索结果 HTML
+ */
+export function parseBingHtml(html: string, maxResults: number): SearchResult[] {
+  const results: SearchResult[] = [];
+
+  // Bing 结果在 <li class="b_algo" ...> 中（可能有其他属性如 data-id）
+  const parts = html.split(/<li class="b_algo"/i);
+
+  for (let i = 1; i < parts.length && results.length < maxResults; i++) {
+    const block = parts[i];
+    if (!block) continue;
+
+    // 截取到 </li> 或下一个 <li（防止跨块匹配）
+    const endIdx = block.indexOf('</li>');
+    const blockContent = endIdx !== -1 ? block.substring(0, endIdx) : block;
+
+    // 标题和链接在 <h2><a href="...">...</a></h2>
+    const titleMatch = blockContent.match(/<h2[^>]*>\s*<a[^>]*href="([^"]*)"[^>]*>([\s\S]*?)<\/a>/i);
+    // 摘要在 class="b_caption" 的 <p> 中，或 b_lineclamp 的 <p> 中
+    const snippetMatch =
+      blockContent.match(/class="b_caption[^"]*"[^>]*>[\s\S]*?<p[^>]*>([\s\S]*?)<\/p>/i) ||
+      blockContent.match(/<p[^>]*class="b_lineclamp[^"]*"[^>]*>([\s\S]*?)<\/p>/i);
+
+    if (!titleMatch) continue;
+
+    const url = titleMatch[1]?.replace(/&amp;/g, '&').trim() || '';
+    const title = titleMatch[2]?.replace(/<[^>]+>/g, '').trim() || '';
+    const snippet = snippetMatch?.[1]?.replace(/<[^>]+>/g, '').trim() || '';
+
+    if (title && url) {
+      results.push({ title, url, snippet });
+    }
+  }
+
+  return results;
+}
+
+/**
+ * 通过百度搜索（国内 fallback）
+ */
+async function searchBaidu(
+  query: string,
+  maxResults: number,
+  signal: AbortSignal,
+): Promise<SearchResult[]> {
+  const url = `https://www.baidu.com/s?wd=${encodeURIComponent(query)}&rn=${maxResults}`;
+  const response = await fetch(url, {
+    signal,
+    headers: {
+      ...BROWSER_HEADERS,
+      Referer: 'https://www.baidu.com/',
+    },
+    redirect: 'follow',
+  });
+
+  if (!response.ok) {
+    throw new Error(`Baidu HTTP ${response.status}`);
+  }
+
+  const html = await response.text();
+  return parseBaiduHtml(html, maxResults);
+}
+
+/**
+ * 解析百度搜索结果 HTML
+ */
+export function parseBaiduHtml(html: string, maxResults: number): SearchResult[] {
+  const results: SearchResult[] = [];
+
+  // 百度结果在 <div class="result c-container"> 或 <div class="c-container new-pmd">
+  const containerBlocks = html.split(/class="[^"]*c-container[^"]*"/);
+
+  for (let i = 1; i < containerBlocks.length && results.length < maxResults; i++) {
+    const block = containerBlocks[i];
+    if (!block) continue;
+
+    // 标题在 <h3> 内的 <a> 中
+    const titleMatch = block.match(/<h3[^>]*>[\s\S]*?<a[^>]*href="([^"]*)"[^>]*>([\s\S]*?)<\/a>/i);
+    // 摘要在 class 含 content-right 或 c-span-last 的 <span> 中，或 <div class="c-abstract">
+    const snippetMatch =
+      block.match(/class="c-abstract[^"]*"[^>]*>([\s\S]*?)<\/(?:span|div)>/i) ||
+      block.match(/class="content-right[^"]*"[^>]*>[\s\S]*?<span[^>]*>([\s\S]*?)<\/span>/i) ||
+      block.match(/<span class="[^"]*content-right[^"]*"[^>]*>([\s\S]*?)<\/span>/i);
+
+    if (!titleMatch) continue;
+
+    const url = titleMatch[1]?.replace(/&amp;/g, '&').trim() || '';
+    const title = titleMatch[2]?.replace(/<[^>]+>/g, '').trim() || '';
+    const snippet = snippetMatch?.[1]?.replace(/<[^>]+>/g, '').trim() || '';
+
+    // 过滤百度内部链接
+    if (title && url && !url.startsWith('/') && !url.startsWith('#')) {
+      results.push({ title, url, snippet });
+    }
+  }
+
+  return results;
+}
+
 export const webSearchTool: ToolDefinition = {
   name: 'web_search',
   description:
@@ -22,27 +160,24 @@ export const webSearchTool: ToolDefinition = {
     const timer = setTimeout(() => controller.abort(), 15_000);
 
     try {
-      const url = `https://html.duckduckgo.com/html/?q=${encodeURIComponent(query)}`;
-      const response = await fetch(url, {
-        signal: controller.signal,
-        headers: { 'User-Agent': 'coding-agent/1.0', Accept: 'text/html' },
-        redirect: 'follow',
-      });
-
-      if (!response.ok) {
-        return `Search failed: HTTP ${response.status} ${response.statusText}`;
-      }
-
-      const html = await response.text();
-      const results = parseDuckDuckGoHtml(html).slice(0, max_results);
-
-      if (results.length === 0) {
-        return `No results found for "${query}".`;
+      // 搜索引擎优先级：Bing(cn) → 百度
+      const engines = [searchBing, searchBaidu];
+
+      let lastError = '';
+      for (const engine of engines) {
+        try {
+          const results = await engine(query, max_results, controller.signal);
+          if (results.length > 0) {
+            return results
+              .map((r, i) => `${i + 1}. ${r.title}\n   ${r.url}\n   ${r.snippet || '(no snippet)'}`)
+              .join('\n\n');
+          }
+        } catch (err: unknown) {
+          lastError = err instanceof Error ? err.message : String(err);
+        }
       }
 
-      return results
-        .map((r, i) => `${i + 1}. ${r.title}\n   ${r.url}\n   ${r.snippet}`)
-        .join('\n\n');
+      return `No results found for "${query}".${lastError ? ` Last error: ${lastError}` : ''}`;
     } catch (err: unknown) {
       const message = err instanceof Error ? err.message : String(err);
       return `Search error for "${query}": ${message}`;
@@ -51,45 +186,3 @@ export const webSearchTool: ToolDefinition = {
     }
   },
 };
-
-interface SearchResult {
-  title: string;
-  url: string;
-  snippet: string;
-}
-
-function parseDuckDuckGoHtml(html: string): SearchResult[] {
-  const results: SearchResult[] = [];
-  const resultBlocks = html.split('class="result__body"');
-
-  for (let i = 1; i < resultBlocks.length; i++) {
-    const block = resultBlocks[i];
-    if (!block) continue;
-
-    const titleMatch = block.match(/class="result__a"[^>]*>([\s\S]*?)<\/a>/i);
-    const snippetMatch = block.match(/class="result__snippet"[^>]*>([\s\S]*?)<\/a>/i);
-
-    const title = titleMatch?.[1]?.replace(/<[^>]+>/g, '').trim() || '';
-
-    // Extract URL from the first href in the block
-    const hrefMatch = block.match(/href="([^"]+)"/);
-    let url = '';
-    if (hrefMatch?.[1]) {
-      url = hrefMatch[1].replace(/&amp;/g, '&');
-      if (url.startsWith('//duckduckgo.com/l/')) {
-        const uddgMatch = url.match(/uddg=([^&]+)/);
-        if (uddgMatch?.[1]) {
-          url = decodeURIComponent(uddgMatch[1]);
-        }
-      }
-    }
-
-    const snippet = snippetMatch?.[1]?.replace(/<[^>]+>/g, '').trim() || '';
-
-    if (title) {
-      results.push({ title, url: url || '(no url)', snippet: snippet || '(no snippet)' });
-    }
-  }
-
-  return results;
-}

packages/codingcode/test/agent/config.test.ts

@@ -7,8 +7,8 @@ describe('resolveConfig', () => {
     expect(cfg.maxStopContinuations).toBe(2);
   });
 
-  it('returns maxSteps defaulting to 50 when no config file is present', () => {
+  it('returns maxSteps defaulting to 200 when no config file is present', () => {
     const cfg = resolveConfig();
-    expect(cfg.maxSteps).toBe(50);
+    expect(cfg.maxSteps).toBe(200);
   });
 });