Here is a formatted changelog ready to copy and paste directly into your GitHub Release and CurseForge update page:

✨ ShuDynamics v1.3.0 — The Vehicles & Roadways Update

ShuDynamics v1.3.0 introduces high-speed modular transportation, automated highway engineering, and a complete petrochemical refining network!

🏎️ Modular All-Terrain Vehicles (ATV)

• All-Terrain Vehicle (ATV): A high-speed, drivable exploration and logistics vehicle built to traverse mountains, caves, and paved highway networks.
• 6 Customizable Component Slots: Tune your vehicle’s performance in the Vehicle Fabricator:
  • Engines: Copper (Baseline), Aluminum (Lightweight), Steel (High-Torque), Titanium (Maximum Performance).
  • Tires: Rubber Off-Road, Steel-Rim Heavy, Titanium Studded.
  • Suspensions & Shocks: Steel and Titanium suspension setups granting 100% cliff fall damage immunity for vehicle and rider.
  • Chassis Armor: Aluminum, Steel, and Titanium plating.
  • Cargo Trunks: Small, Medium, and Large mobile inventory storage beds.
  • Hybrid Power: Accepts Biofuel, Gasoline, High-Octane Racing Fuel, or charges directly from power networks.
• Vehicle Fabricator & Tuning Bay: Assembly and maintenance station to build, customize, and safely pick up vehicle items with all installed modules and cargo preserved.

🛣️ Road Infrastructure & Construction

• Asphalt Roads & Slabs: Paved road blocks that provide players with a continuous movement speed boost and unlock a +25% top speed multiplier for ATVs.
• Auto-Connecting Concrete Curbs: Multi-shape corner curbs that automatically adapt to turns (STRAIGHT, INNER_LEFT, INNER_RIGHT, OUTER_LEFT, OUTER_RIGHT) with 20 precise collision shapes.
• Road Transition Ramps: Dual-mode ramps (GROUND 0–8px and ROAD 8–16px) with direct right-click slab conversion for smooth vehicular road transitions.
• Clay Molding & Pyrometallurgy: Mold Unfired Concrete Curbs and Ramps using clay balls and water, then smelt/blast into finished concrete.
• Autonomous Road Paver: Heavy-duty machine that consumes fuel or electrical energy to automatically lay 3-wide asphalt roads and extrude concrete curbs on both sides.

🛢️ Petrochemicals, Agriculture & Fuels

• Sweet Corn Agriculture: Fast-growing 8-stage crop providing high-saturation food (Roasted Sweet Corn) and bio-ethanol feedstock.
• Oil Sand World Generation: Naturally generating Oil Sand deposits in deserts and badlands yielding Crude Oil Sludge when excavated.
• The Fuel Refinery: Powered distillation machine converting crude oil and agricultural crops into:
  • Gasoline Canisters + Mineral Tar byproduct.
  • Biofuel Canisters.
  • High-Octane Racing Fuel.
• Mineral Tar Recycling: Expanded tar acquisition through Coke Oven byproducts and oil sand smelting for continuous asphalt production.

🛠️ Fixes, Polish & Improvements

• Minecraft 1.21.2+ Item Models: Standardized all in-hand item model definitions to prevent purple/black missing textures.
• Survival Mining & Drop Logic: Added Fortune and Silk Touch drop tables for Oil Sand, Asphalt Slabs, Curbs, and Ramps.
• Battery Screen GUIs: Enhanced slot framing and visual status indicators on Copper, Aluminum, and Steel battery interfaces.
• Localization: Added full localization strings for all new blocks, items, vehicle parts, and GUI containers.

📋 Technical Requirements

• Minecraft Version: 1.21.11
• Mod Loader: Fabric Loader 0.19.3+
• Java: Java 21
• Dependencies: Fabric API