xia2listed

# Xia2 — Research-First Feature Discovery (Portable) Portable version of `xia`. All logic — including the risk-classification signals — lives here in `SKILL.md` as **common, built-in vocabulary**. The same skill works across projects with no per-project config file: signals are detected live per change against the common patterns below. Answer five foundational questions before any implementation begins: 1. **What is this repo really?** Detect the actual tech stack from manifests, configs, and lockfiles — never guess from folder names or branding. 2. **What already exists locally?** Search for reusable code, abstractions, and extension points before proposing anything new. 3. **What does the ecosystem already support?** Check upstream GitHub repositories for established patterns that match the need. 4. **What do the current official docs actually recommend?** Query version-matched documentation, not generic web results. 5. **What is the lightest credible path from here?** Recommend: reuse existing > adapt upstream > use built-in > build from scratch. <HARD-GATE> Do NOT write code, edit files, or scaffold anything until the research brief is complete and delivered to the user. The brief is the deliverable — not implementation. This gate applies regardless of how simple the feature seems. If the user explicitly says "skip research" or "just implement it", note the waiver at the top of your response and proceed — but do not waive it yourself. **Even when waived,** run the D