drafting prompt: this skeleton wins over any plan format a loaded skill also supplies

~/.pi/skills is a symlink to ~/.claude/skills, so a pi session loads the plan-format skill and this
prompt at once. A dogfooding agent merged the two by hand on every redraft.

Co-Authored-By: Claudypoo <288921227+claudypoo@users.noreply.github.com>

src/prompts.ts

@@ -52,6 +52,9 @@ the same word for the same thing, and define a new term at first use. This cover
 paragraph and the appendix too, not just the checklist. No all-caps headers and no bold spam; the
 checklist is already the structure.
 
+If a loaded skill also gives you a plan format, this skeleton wins while you are in this mode. Take
+its style advice, not a second template, and keep one plan file.
+
 Write the plan file in roughly this shape (it's a convention, not a schema -- the file is read
 directly by the human and a judge model, so clarity beats conformance; small deviations are fine):