Bridge mcltspice to SpiceBook (spicebook.warehack.ing) with 5 new MCP
tools (publish, list, get, delete, simulate), a status resource, and a
guided publish prompt. Includes LTspice-to-ngspice netlist conversion
(strips .backanno, Rser=, Windows paths) with structured warnings.
Path traversal protection on file reads (extension allowlist + resolve),
notebook ID validation, narrowed exception handling, and size limits.
35 unit tests + 4 live integration tests.