[LOGIC] Build constraint solver for skill parameters

[swamy18]

Implement constraint satisfaction solver:

Constraint Types:

• Range constraints (min, max, boundaries)
• Exclusive constraints (cannot use together)
• Mutual dependency constraints
• Format/pattern constraints
• Cross-parameter constraints
• Conditional constraints

Solver Algorithm:

def solve_constraints(parameters, constraints):
    # Returns valid parameter assignments

Features:

• Detect unsatisfiable constraints
• Find all valid solutions
• Optimize for minimum cost
• Backtracking on conflicts