Phase 3: High-Level Python SDK and Usability Layer

[wdconinc]

• Add intuitive Python SDK functions for common analysis (get_main_detector_results, get_lumi_results, get_beam_monitor_results, etc).
• Filtering, aggregation, and grouping options.
• Result object wrappers (e.g., DetectorResults).
• Built-in local caching for fast iteration.
• Add/expand example notebooks.

Deliverable: Non-SQL analysts can perform most routine queries via Python API.