Prepare Poaching Liquid: Add the sweet white wine, orange juice, garlic, fresh dill, and orange slices to a large skillet. Place over medium-high heat, cover, and bring to a gentle simmer, about 3 to 4 minutes.
Season Salmon: Sprinkle the salmon fillets evenly with the garlic and herb seasoning and ¼ teaspoon of the black pepper.
Poach Salmon: Place the seasoned salmon fillets in the simmering citrus liquid. Reduce the heat to medium-low, cover, and gently cook for about 7 to 9 minutes, or until the salmon is opaque and flakes easily with a fork. Transfer the salmon to a plate and keep warm.
Reduce Poaching Liquid: Leave the citrus poaching liquid in the skillet. Increase the heat to medium and simmer uncovered for about 2 to 3 minutes to begin reducing the liquid.
Make Orange-Mustard Sauce: Stir the orange marmalade and Country Dijon mustard into the reduced poaching liquid. Continue simmering for about 2 to 3 minutes, stirring occasionally, until the sauce is slightly thickened.
Finish Sauce: Add the unsalted butter and stir until completely melted and the sauce is smooth and glossy. Reduce the heat to low and keep the sauce warm.
Prepare Asparagus: Trim the tough ends from the asparagus and cut the stalks into roughly 1-inch pieces.
Sauté Asparagus: Heat the canola oil in a large skillet over medium-high heat. Add the asparagus and cook for about 3 to 4 minutes, stirring frequently, until bright green and crisp-tender.
Add Tomatoes: Add the halved grape tomatoes to the asparagus. Cook for about 1 minute, tossing gently, until the tomatoes are warmed but still hold their shape.
Season Salad: Pour the seasoned rice vinegar over the vegetables and sprinkle with the remaining ¼ teaspoon black pepper. Toss well and cook for about 1 minute.
Add Almonds: Add the chopped smoked almonds and toss until evenly distributed throughout the asparagus mixture.
Add Manchego: Sprinkle the shredded Manchego cheese over the warm salad. Toss gently just until combined and slightly softened from the heat.
Plate and Serve: Divide the asparagus-almond salad among four plates and place one salmon fillet on each serving. Spoon the warm orange-mustard sauce over the salmon and serve immediately.