Add pre-push secret check and secret redaction

utils/secrets.ts

@@ -0,0 +1,51 @@
+/**
+ * Secret detection and redaction utilities
+ * Redacts actual secret values rather than using pattern matching
+ */
+
+import { agentsManifest } from "../external.ts";
+import { getGitHubInstallationToken } from "./github.ts";
+
+function getAllSecrets(): string[] {
+  const secrets: string[] = [];
+
+  // get all API key values from agent manifest
+  for (const agent of Object.values(agentsManifest)) {
+    for (const keyName of agent.apiKeyNames) {
+      const envKey = keyName.toUpperCase();
+      const value = process.env[envKey];
+      if (value) {
+        secrets.push(value);
+      }
+    }
+  }
+
+  // add GitHub installation token
+  try {
+    const token = getGitHubInstallationToken();
+    if (token) {
+      secrets.push(token);
+    }
+  } catch {
+    // token not set yet, ignore
+  }
+
+  return secrets;
+}
+
+export function redactSecrets(content: string, secrets?: string[]): string {
+  const secretsToRedact = [...(secrets ?? []), ...getAllSecrets()];
+  let redacted = content;
+  for (const secret of secretsToRedact) {
+    if (secret) {
+      const escaped = secret.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+      redacted = redacted.replaceAll(new RegExp(escaped, "g"), "[REDACTED_SECRET]");
+    }
+  }
+  return redacted;
+}
+
+export function containsSecrets(content: string, secrets?: string[]): boolean {
+  const secretsToCheck = secrets ?? getAllSecrets();
+  return secretsToCheck.some((secret) => secret && content.includes(secret));
+}