v2.7.7 — bug fix, telemetry depth, 2 new skills

What's in 2.7.7

Bug fix: TypeError ('<' not supported between instances of 'int' and 'str') in row-count estimation — 6 occurrences/day fixed.

Telemetry:

• guide_topic now captured on get_troubleshooting_guide calls — tells us whether setup/iam/schema is the dominant blocker
• skill_served now captured on search_skills calls — tells us when a specific skill was returned vs the index

New skills (no restart needed — fetched at call time):

• custom-dimensions — how to discover and query property-specific custom event parameters without guessing
• compatible-combinations — which dimension/metric pairings GA4 accepts and how to fix incompatibility errors

Updated skill:

• filter-structures — added camelCase vs snake_case rule (pagePath not page_path)