* security: validate CLI paths/args in dev tools (SonarCloud S2083/S8707/S8705/S7044)
Resolve and validate command-line path arguments before use, enforce HTTPS at
download sinks, and confirm path containment. Hardens local codegen/fetch tools
against path-traversal and command-argument-injection findings.
* ci: exclude dev tool scripts from SonarCloud coverage gate
The extract_tables.py codegen tools aren't part of the unit-tested surface;
exclude tools/, docs/, examples/ from coverage so the new-code coverage gate
doesn't block hardening-only changes.
Dylan M. Taylor