diff --git a/src/extensions/core/maskMetadataStore.ts b/src/extensions/core/maskMetadataStore.ts
deleted file mode 100644
index b8add5ef4a..0000000000
--- a/src/extensions/core/maskMetadataStore.ts
+++ /dev/null
@@ -1,95 +0,0 @@
-/**
- * Store for mask metadata from cloud backend
- * This helps identify masks when using hash-based filenames
- */
-
-interface MaskMetadata {
-  is_mask: boolean
-  original_hash?: string
-  mask_type?: string
-  related_files?: {
-    mask?: string
-    paint?: string
-    painted?: string
-  }
-}
-
-class MaskMetadataStore {
-  private metadata: Map<string, MaskMetadata> = new Map()
-
-  /**
-   * Store metadata for a file
-   * @param filename The filename (hash) of the file
-   * @param metadata The metadata from the backend
-   */
-  setMetadata(filename: string, metadata: MaskMetadata | undefined) {
-    if (!metadata || !filename) return
-
-    console.log('[MaskMetadataStore] Storing metadata for', filename, metadata)
-    this.metadata.set(filename, metadata)
-  }
-
-  /**
-   * Get metadata for a file
-   * @param filename The filename (hash) to look up
-   */
-  getMetadata(filename: string): MaskMetadata | undefined {
-    return this.metadata.get(filename)
-  }
-
-  /**
-   * Check if a file is a mask based on metadata
-   * @param filename The filename to check
-   */
-  isMask(filename: string): boolean {
-    const metadata = this.getMetadata(filename)
-    return metadata?.is_mask === true
-  }
-
-  /**
-   * Get the original image hash for a mask
-   * @param filename The mask filename
-   */
-  getOriginalHash(filename: string): string | undefined {
-    const metadata = this.getMetadata(filename)
-    return metadata?.original_hash
-  }
-
-  /**
-   * Store related files for a mask (from upload response)
-   * @param filename The mask filename
-   * @param relatedFiles The related files object
-   */
-  setRelatedFiles(filename: string, relatedFiles: any) {
-    const metadata = this.metadata.get(filename)
-    if (metadata) {
-      metadata.related_files = relatedFiles
-      this.metadata.set(filename, metadata)
-    } else {
-      // Create new metadata entry with just related files
-      this.metadata.set(filename, {
-        is_mask: true,
-        related_files: relatedFiles
-      })
-    }
-  }
-
-  /**
-   * Get related files for a mask
-   * @param filename The mask filename
-   */
-  getRelatedFiles(filename: string): MaskMetadata['related_files'] | undefined {
-    const metadata = this.getMetadata(filename)
-    return metadata?.related_files
-  }
-
-  /**
-   * Clear all stored metadata
-   */
-  clear() {
-    this.metadata.clear()
-  }
-}
-
-// Export singleton instance
-export const maskMetadataStore = new MaskMetadataStore()