Add hybrid-math-solver MCP server

[ObitoUchiha930]

<## Description
Adds hybrid-math-solver MCP server that prevents Claude from averaging inconsistent linear systems.

The Problem It Solves

Claude hallucinates when A has identical rows but different b:
Example: A=[[1,0],[1,0]], b=[1,2] -> x=1 and x=2
Claude incorrectly answers x=1.5 (average), but A·1.5 - b = [0.5, -0.5] != 0
Correct answer: No solution exists

Solution

• verify_linear_system tool checks A·x - b = 0
• Detects identical rows in A with different b values
• Returns residual and prevents averaging hallucination

Implementation

• Location: src/hybrid-math-solver/
• Files: index.js, package.json, README.md
• SDK: @modelcontextprotocol/sdk
• Author: Faissal Ait Jana - TU Delft - @ajfAlpha

Testing

Tested on inconsistent systems where averaging fails.