Document quote-first evidence style

AGENTS.md

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+# Local Instructions
+
+## Quote-first evidence
+
+When adding evidence or appendix material for this skill, prefer the expert's
+own words over assistant synthesis. These sources are high-level SME material,
+often above current frontier LLM taste and more diverse than model priors.
+Quoting them is grounding data; rewording them injects assistant bias.
+
+- Use generous quote blocks, usually 2-3 sentences or a full paragraph.
+- Preserve the author's paragraph flow. Do not insert blank blockquote lines
+  between sentences from the same paragraph; it makes expert prose harder to
+  read and adds fake structure.
+- Keep editorial text sparse and mostly for routing: why this source is here,
+  when to read it, and what local file it supports.
+- Do not atomize useful source material into tiny one-line quotes when a longer
+  block preserves the author's reasoning.
+- Put lower-relevance sources in "See also" rather than forcing a synthetic
+  narrative around them.
+- In `SKILL.md`, link to reference docs like `refs/research_taste.md` instead
+  of copying a long assistant-written summary.