Create a high-resolution technical isometric sketch of a gable roof shelter structure for yard equipment storage, exactly matching these two reference descriptions: First reference - an isometric view with a pitched roof, multiple rafters connecting to a ridge beam, supported by vertical posts, with dimensions labeled as 80 units vertically on posts, 200 horizontally on the base, 100 on the width, and blank red oval labels pointing to all joints and members for bracket annotations. Second reference - a side view line drawing of a similar gable roof pergola-style shelter with overall dimensions 20'5" length x 15'6" width x 10'1" height, showing posts anchored at base, double beams, angled rafters meeting at peak, and open sides. Use only 4x4 x 8' wood timbers for all elements (posts, beams, rafters, purlins). Incorporate exact heavy-duty black powder-coated steel pergola brackets from Vevor at all joints: 3-way slanted/angled brackets (from https://www.vevor.com/deck-post-base-c_10538/4x4-inch-pergola-bracket-kit-inner-3-5x3-5-3-way-slanted-brackets-diy-post-p_010805333405) for rafter-to-beam connections with 15-30 degree tilt; straight 3-way woodworks brackets (from https://www.vevor.com/pergola-bracket-c_43931/4x4-inch-pergola-bracket-kit-inner-3-5x3-5-3-way-woodworks-diy-post-2-pcs-p_010742589135 and 4-pcs variant) for post-to-beam T-joints; mixed 3/4-way with bases (from Ver más