Adds skills for examining ado operations and discovery spaces, and refreshes several existing skills for consistency. Also introduces a .bob/ mirror of the same skills.

Skills

• examining-ado-operations — End-to-end workflow: fetch operation and space YAML, summarize configuration, export entities / measurement requests / results to CSV, light analysis, and interpretation of failures and data quality. Covers --use-latest, parallel steps where safe, and report layout under reports/<ado_context_name>/.
• examining-discovery-spaces — End-to-end workflow: fetch space YAML, describe entity and measurement structure, sampling coverage, export measurement data, and relate resources. Cross-links to examining operations where relevant.