Pre-spec research skill for wiki-anvil. Takes a GitHub repo URL, a tweet URL, or a local text-file path and builds up a durable research corpus under `research/` — per-target feature ledgers, an aggregated `FEATURES.md`, and a free-form `INSIGHTS.md`. The corpus is the input to a later interview-driven spec skill; this skill does NOT draft spec, plan, effort estimates, or roadmap. **Invoke explicitly** via the `/wiki-anvil-researcher` slash command or by saying "use the wiki-anvil-researcher skill on <url-or-path>" — auto-triggering on generic research prompts is unreliable because Claude can often do shallow research without a skill.
2026-04-19