feat: AI 对话支持 A2UI 表单/审查/图表与 Agent 工具

apps/server/src/ai-chat/ai-chat.helpers.ts

@@ -0,0 +1,48 @@
+export function redactText(value: string): string {
+  return value
+    .replace(/1[3-9]\d{9}/g, '[PHONE]')
+    .replace(/\b\d{17}[\dXx]\b/g, '[ID_CARD]')
+    .replace(/Bearer\s+[A-Za-z0-9._~+/-]+=*/gi, 'Bearer [REDACTED]')
+    .replace(/(sk-|api[_-]?key["'=:\s]+)[A-Za-z0-9._-]{8,}/gi, '$1[REDACTED]');
+}
+
+export function makeRedactingReplacer(redact: (value: string) => string) {
+  return (key: string, value: unknown): unknown => {
+    if (/password|token|secret|api.?key|authorization|phone|mobile|id.?card|身份证/i.test(key)) {
+      return '[REDACTED]';
+    }
+    if (typeof value === 'string') return redact(value);
+    return value;
+  };
+}
+
+export function parseToolArguments(value: string): unknown {
+  try {
+    return JSON.parse(value || '{}') as unknown;
+  } catch {
+    return null;
+  }
+}
+
+export function safeToolName(name: string): string {
+  return name.replace(/[^a-zA-Z0-9_]/g, '_').slice(0, 64) || '_invalid';
+}
+
+export function throwIfAborted(signal: AbortSignal): void {
+  if (signal.aborted) throw signal.reason ?? new Error('aborted');
+}
+
+export function errorCode(error: unknown): string {
+  if (error && typeof error === 'object' && 'status' in error) {
+    const status = Number(error.status);
+    if (status === 408) return 'UPSTREAM_TIMEOUT';
+    if (status >= 400 && status < 500) return 'UPSTREAM_REQUEST_ERROR';
+  }
+  return 'UPSTREAM_ERROR';
+}
+
+export function assertGeneratedLength(reasoning: string, content: string): void {
+  if (reasoning.length + content.length > 256 * 1024) {
+    throw new Error('AI response exceeded limit');
+  }
+}