diff --git a/.gitignore b/.gitignore
index 431bdc2..b71c159 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,5 +41,8 @@ assets/discord-*.png
 # Desktop app experiments
 desktop/
 
+# Mac App Store app (private)
+appstore/
+
 # WIP / not ready
 src/summit.ts
diff --git a/src/session-cache.ts b/src/session-cache.ts
index 7656818..2537a7d 100644
--- a/src/session-cache.ts
+++ b/src/session-cache.ts
@@ -235,6 +235,15 @@ export async function fingerprintFile(filePath: string): Promise<FileFingerprint
     const s = await stat(filePath)
     return { dev: s.dev, ino: s.ino, mtimeMs: s.mtimeMs, sizeBytes: s.size }
   } catch {
+    const colonIdx = filePath.lastIndexOf(':')
+    if (colonIdx > 0) {
+      try {
+        const s = await stat(filePath.slice(0, colonIdx))
+        return { dev: s.dev, ino: s.ino, mtimeMs: s.mtimeMs, sizeBytes: s.size }
+      } catch {
+        return null
+      }
+    }
     return null
   }
 }