cheez-write

This skill should be used when the user asks to edit, replace, modify, update, change, delete, or insert code in a file — phrases like "replace this function", "delete lines 44-89", "update validateToken", "change the implementation", "add this import", "fix this bug" (when fixing requires editing), or apply a cross-cutting structural change (codemod) like "rewrite every X to Y". Replaces sed / awk / perl -i / patch / tee / Edit / Write / shell redirects (`>`, `>>`) with hash-anchored tilth MCP edits for one-off block changes; sanctions `sg --rewrite` (ast-grep) for structural codemods that span many files. Always read first via cheez-read to get hash anchors for anchored edits. Prefer surgical anchored edits over whole-file rewrites. If tilth MCP is unavailable, stop and report rather than fall back. Do NOT use for reading files (cheez-read first to get anchors), searching code (use cheez-search), or running tests/builds.