Method findPrimaryFile

frontend/src/cache.ts:688–710

* Find primary file for a workflow (file with most nodes)

(
        nodeIds: string[],
        nodeToFile: Map<string, string>
    )

     * Find primary file for a workflow (file with most nodes)
     */
    private findPrimaryFile(
        nodeIds: string[],
        nodeToFile: Map<string, string>
    ): string {
        const fileCounts = new Map<string, number>();

        for (const id of nodeIds) {
            const file = nodeToFile.get(id);
            if (file) {
                fileCounts.set(file, (fileCounts.get(file) || 0) + 1);
            }
        }

        let maxFile = 'unknown';
        let maxCount = 0;
        for (const [file, count] of fileCounts) {
            if (count > maxCount) {
                maxCount = count;
                maxFile = file;
            }
        }
        return maxFile;
    }

    /**
     * Merge new cross-file edges with replace-on-conflict behavior