Refactor paired execution flow boundaries

runners/agent-runner/src/verification.ts

@@ -1,6 +1,9 @@
-import { createHash } from 'crypto';
 import fs from 'fs';
 import path from 'path';
+export {
+  computeVerificationSnapshotId,
+  resolveVerificationResponsesDir,
+} from '../../../shared/verification-snapshot.js';
 
 export const VERIFICATION_PROFILES = [
   'test',
@@ -24,8 +27,6 @@ export interface VerificationResponse {
   error?: string;
 }
 
-const SNAPSHOT_EXCLUDE_NAMES = new Set(['.git', 'node_modules', '.env']);
-
 export function isVerificationProfile(
   value: unknown,
 ): value is VerificationProfile {
@@ -35,47 +36,6 @@ export function isVerificationProfile(
   );
 }
 
-function updateSnapshotHash(
-  hash: ReturnType<typeof createHash>,
-  repoDir: string,
-  currentPath: string,
-): void {
-  const relPath = path.relative(repoDir, currentPath) || '.';
-  const stat = fs.lstatSync(currentPath);
-
-  if (stat.isDirectory()) {
-    if (relPath !== '.') {
-      hash.update(`dir\0${relPath}\0`);
-    }
-    for (const entry of fs.readdirSync(currentPath).sort()) {
-      if (SNAPSHOT_EXCLUDE_NAMES.has(entry)) continue;
-      updateSnapshotHash(hash, repoDir, path.join(currentPath, entry));
-    }
-    return;
-  }
-
-  if (stat.isSymbolicLink()) {
-    hash.update(`symlink\0${relPath}\0${fs.readlinkSync(currentPath)}\0`);
-    return;
-  }
-
-  if (stat.isFile()) {
-    hash.update(`file\0${relPath}\0`);
-    hash.update(fs.readFileSync(currentPath));
-    hash.update('\0');
-  }
-}
-
-export function computeVerificationSnapshotId(repoDir: string): string {
-  const hash = createHash('sha256');
-  updateSnapshotHash(hash, repoDir, repoDir);
-  return `fs:${hash.digest('hex').slice(0, 24)}`;
-}
-
-export function resolveVerificationResponsesDir(hostIpcDir: string): string {
-  return path.join(hostIpcDir, 'verification-responses');
-}
-
 export async function waitForVerificationResponse(
   responseDir: string,
   requestId: string,