PAR-005: AutoEZ-class automation primitives (Phase 3)

[dc0sk]

Source: docs/backlog.md (PAR-005)

Owner: Automation
Target: Phase 3

Resolution criteria:

• variable sweep runner implemented with CLI entry point
• resonance targeting helper implemented with CLI entry point
• convergence study helper implemented with CLI entry point
• matching-network helper implemented with CLI entry point
• documented examples included

Notes:
Tracks PRT-005/PRT-006 and CP-006/CP-008 alignment.