first-tree-write

# First Tree Write Use this skill when a specific source artifact should be reflected into the Context Tree. The generated `AGENTS.md` / `CLAUDE.md` Context Tree Policy is the baseline for what belongs in the tree; this skill applies that policy to a source-backed write. Use `first-tree-read` for task-scoped tree reads before acting, except when the source is a current-session Audit finding whose exact snapshot context is already loaded. Use this skill only for source artifact -> tree edit work. ## Source Gate Writing is source-driven. Acceptable sources include: - a PR/MR, forge Issue, commit discussion, or review thread; - a design doc, meeting note, decision note, or pasted source material; - a source repo change you just completed, when its design decision now needs durable tree context; - an evidence-backed `context-tree-audit` finding from the current session that records the exact audited tree HEAD and scope, path, generated-policy rule, current source evidence, confidence, intended replacement or canonical placement, and risk, and comes from an Audit request that explicitly granted Maintenance mutation authority. If no concrete source artifact exists, stop and ask for one. Do not invent ad-hoc tree edits from memory or from a broad request like "update the tree". When the source repo or issue lives on GitHub or GitLab, use its matching CLI (`gh` or `glab`) for that source artifact. Before any tree push or review request, detect the Context Tree forge f...