[cschanhniem]

Implements A2 from NEXT_100_PR_MAP.

What

• src/openamp_foundry/cli/commands/doctor.py: _run_doctor() CLI entry point, run_doctor() returns structured report dict, checks Python >=3.9, required packages (numpy/scipy/pandas/pytest), openamp_foundry importable, expected dirs (src/tests/docs/schemas/scripts)
• tests/cli/test_doctor_command.py: 63 tests in 7 classes
• BASELINE: 8410 -> 8473

Disconfirming pass

• Doctor command does not change any safety gate or threshold
• All checks are read-only diagnostics
• Failed checks print ERROR messages and return exit code 1 (does not auto-fix)