[perfectalone375]

Overview

This PR expands openengineering-toolkit with core aerospace & rocket propulsion analytics, fluid mechanics formulas, and a Model Context Protocol (MCP) server for AI agent integration. It also fixes failing test assertions and Ruff linting rules.

Key Additions

1. Rocket Propulsion Module (propulsion.py):
   • tsiolkovsky_delta_v: Closed-form rocket equation with propellant fraction validation.
   • characteristic_velocity_star: Chamber exhaust velocity $c^*$ calculation.
   • thrust_coefficient_ideal: Evaluates momentum expansion & ambient pressure mismatch.
   • rocket_thrust_n: Total rocket thrust force calculation.
2. Fluid Mechanics Module (fluids.py):
   • reynolds_number: Boundary layer regime identification.
   • dynamic_pressure_pa: Fluid kinetic energy pressure term $q = 0.5 \rho v^2$.
   • mach_number & stagnation_pressure_ratio: Compressible isentropic flow.
   • haaland_friction_factor: Explicit Darcy pipe friction calculation.
3. Model Context Protocol (MCP) Server (mcp_server.py):
   • Native JSON-RPC stdio server exposing openeng_deltav, openeng_beam_deflection, openeng_reynolds, and openeng_unit_convert.
4. CLI Tool (openeng):
   • Added command-line entry points for all core calculations.
5. Quality & CI Fixes:
   • Fixed Euler-Bernoulli beam deflection test assertion ($0.000833$ vs incorrect $0.000416$).
   • Resolved all Ruff linting violations and line-length constraints.
   • Expanded test suite to 45 unit tests (100% pass rate).