Extract paired source ref helpers

src/paired-execution-context-owner.ts

@@ -11,12 +11,14 @@ import { logger } from './logger.js';
 import { markPairedTaskReviewReady } from './paired-workspace-manager.js';
 import {
   applyPairedTaskPatch,
-  hasCodeChangesSinceRef,
   requestArbiterOrEscalate,
-  resolveCanonicalSourceRef,
   transitionPairedTaskStatus,
 } from './paired-execution-context-shared.js';
 import { resolveOwnerCompletionSignal } from './paired-completion-signals.js';
+import {
+  hasCodeChangesSinceRef,
+  resolveCanonicalSourceRef,
+} from './paired-source-ref.js';
 import { parseVisibleVerdict } from './paired-verdict.js';
 import type { PairedTask } from './types.js';
 

src/paired-execution-context-reviewer.ts

@@ -3,13 +3,13 @@ import { getPairedWorkspace } from './db.js';
 import { logger } from './logger.js';
 import {
   requestArbiterOrEscalate,
-  resolveCanonicalSourceRef,
   transitionPairedTaskStatus,
 } from './paired-execution-context-shared.js';
 import {
   resolveReviewerCompletionSignal,
   resolveReviewerFailureSignal,
 } from './paired-completion-signals.js';
+import { resolveCanonicalSourceRef } from './paired-source-ref.js';
 import { parseVisibleVerdict } from './paired-verdict.js';
 import type { PairedTask } from './types.js';
 

src/paired-execution-context-shared.ts

@@ -1,5 +1,3 @@
-import { execFileSync } from 'child_process';
-
 import { isArbiterEnabled } from './config.js';
 import { updatePairedTaskIfUnchanged } from './db.js';
 import { logger } from './logger.js';
@@ -16,50 +14,10 @@ export {
   parseVisibleVerdict,
 } from './paired-verdict.js';
 export type { ArbiterVerdictResult, VisibleVerdict } from './paired-verdict.js';
-
-export function resolveCanonicalSourceRef(workDir: string): string {
-  const treeHash = resolveCanonicalTreeHash(workDir);
-  return treeHash || 'HEAD';
-}
-
-function resolveCanonicalTreeHash(workDir: string): string | null {
-  try {
-    const treeHash = execFileSync('git', ['rev-parse', 'HEAD^{tree}'], {
-      cwd: workDir,
-      encoding: 'utf-8',
-      stdio: ['ignore', 'pipe', 'pipe'],
-    }).trim();
-    return treeHash || null;
-  } catch {
-    return null;
-  }
-}
-
-export function hasCodeChangesSinceRef(
-  workDir: string,
-  sourceRef: string | null | undefined,
-): boolean | null {
-  if (!sourceRef) return null;
-  try {
-    execFileSync('git', ['diff', '--quiet', sourceRef, 'HEAD'], {
-      cwd: workDir,
-      stdio: ['ignore', 'pipe', 'pipe'],
-    });
-    return false;
-  } catch (error) {
-    const exitCode =
-      typeof error === 'object' &&
-      error !== null &&
-      'status' in error &&
-      typeof (error as { status?: unknown }).status === 'number'
-        ? (error as { status: number }).status
-        : null;
-    if (exitCode === 1) {
-      return true;
-    }
-    return null;
-  }
-}
+export {
+  hasCodeChangesSinceRef,
+  resolveCanonicalSourceRef,
+} from './paired-source-ref.js';
 
 const ALLOWED_PAIRED_STATUS_TRANSITIONS: Record<
   PairedTaskStatus,

src/paired-execution-context.ts

@@ -48,10 +48,10 @@ import {
 } from './paired-execution-context-reviewer.js';
 import {
   applyPairedTaskPatch,
-  resolveCanonicalSourceRef,
   requestArbiterOrEscalate,
   transitionPairedTaskStatus,
 } from './paired-execution-context-shared.js';
+import { resolveCanonicalSourceRef } from './paired-source-ref.js';
 import {
   isOwnerWorkspaceRepairNeededError,
   markPairedTaskReviewReady,

src/paired-source-ref.ts

@@ -0,0 +1,45 @@
+import { execFileSync } from 'child_process';
+
+export function resolveCanonicalSourceRef(workDir: string): string {
+  const treeHash = resolveCanonicalTreeHash(workDir);
+  return treeHash || 'HEAD';
+}
+
+function resolveCanonicalTreeHash(workDir: string): string | null {
+  try {
+    const treeHash = execFileSync('git', ['rev-parse', 'HEAD^{tree}'], {
+      cwd: workDir,
+      encoding: 'utf-8',
+      stdio: ['ignore', 'pipe', 'pipe'],
+    }).trim();
+    return treeHash || null;
+  } catch {
+    return null;
+  }
+}
+
+export function hasCodeChangesSinceRef(
+  workDir: string,
+  sourceRef: string | null | undefined,
+): boolean | null {
+  if (!sourceRef) return null;
+  try {
+    execFileSync('git', ['diff', '--quiet', sourceRef, 'HEAD'], {
+      cwd: workDir,
+      stdio: ['ignore', 'pipe', 'pipe'],
+    });
+    return false;
+  } catch (error) {
+    const exitCode =
+      typeof error === 'object' &&
+      error !== null &&
+      'status' in error &&
+      typeof (error as { status?: unknown }).status === 'number'
+        ? (error as { status: number }).status
+        : null;
+    if (exitCode === 1) {
+      return true;
+    }
+    return null;
+  }
+}