What problem does it solve? Claude Code's built-in /insights only covers Claude sessions, leaving other agent lanes on the host (codex, copilot, opencode, antigravity/agy, gemini) without any equivalent usage reporting. This Skill produces the same class of per-session facets, aggregate narrative, and shareable HTML report for those vendors. ## Core Features & Use Cases - Cross-vendor session indexing: Builds a bounded session index per vendor with honest population metadata (total in window, caps, store caveats) via scripts/vendor-insights.py. - Model-in-the-loop faceting: Reads bounded transcripts and writes PII-clean facet JSON capturing goals, outcomes, satisfaction, friction, and session type. - Narrative and HTML rendering: Composes a grounded aggregate narrative with coverage notes and renders a shareable report-<ts>.html file. - Use Case: When asked "what has codex been doing this month", index the codex store, facet the most active sessions, write a narrative with stated denominators, and send the rendered HTML report. ## Quick Start Generate an insights report for the codex agent lane covering the last 14 days and send me the rendered HTML file.