fix(tess): redact sensitive runtime content

packages/log/src/redaction.ts

@@ -0,0 +1,35 @@
+export type SensitiveClassification = 'secret' | 'pii';
+
+export interface RedactionResult {
+  content: string;
+  classifications: SensitiveClassification[];
+}
+
+const SECRET_PATTERNS: RegExp[] = [
+  /\b(?:sk|ghp|gitea)_[A-Za-z0-9_-]{8,}\b/g,
+  /\b(?:api[_-]?key|token|password|secret)\s*[:=]\s*[^\s,;]+/gi,
+];
+const PII_PATTERNS: RegExp[] = [
+  /\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}\b/gi,
+  /\b\+?\d[\d(). -]{7,}\d\b/g,
+];
+
+export function redactSensitiveContent(content: string): RedactionResult {
+  let redacted = content;
+  const classifications: SensitiveClassification[] = [];
+  for (const pattern of SECRET_PATTERNS) {
+    if (pattern.test(redacted)) {
+      classifications.push('secret');
+      redacted = redacted.replace(pattern, '[REDACTED_SECRET]');
+    }
+    pattern.lastIndex = 0;
+  }
+  for (const pattern of PII_PATTERNS) {
+    if (pattern.test(redacted)) {
+      classifications.push('pii');
+      redacted = redacted.replace(pattern, '[REDACTED_PII]');
+    }
+    pattern.lastIndex = 0;
+  }
+  return { content: redacted, classifications: [...new Set(classifications)] };
+}