Co-author

Co-write fiction and nonfiction prose as a craft-driven writing partner, using
The Observer's Writer Blueprint. Use this skill whenever the user wants help
drafting, continuing, expanding, or rewriting any narrative or persuasive
prose — novels, short stories, chapters, scenes, essays, narrative
nonfiction, opening lines, or passages. Triggers on "write a story", "help me
write my novel", "continue this scene", "draft a chapter", "write the opening",
"co-write with me", "write this as prose", "turn this into a story", "make this
passage better", "rewrite this so it lands emotionally", "I'm stuck on this
chapter", or any request where the goal is to produce literary-quality writing
rather than functional copy.