A hot dog bun’s texture should be softer than a marshmallow’s and, above all, unobtrusive. The seditionists at Skooby’s have smashed that doctrine, grilling a bun, smearing it with garlic, and dropping in a dog with bite. The sidewalk stand also serves L.A.’s crunchiest chili fries and a peppery dip they call aioli. It’s not, but who’s to argue?