Support setup templates for local tracker files

## Goal Support package setup templates for local tracker files. ## Why Some agent workflows need structured local notes, CSV trackers, or small data files to give the receiver the intended experience. ## Scope - Define how packages declare safe local resource templates. - Support CSV/template file creation during permission-gated setup. - Avoid sharing source user's private tracker contents unless intentionally included. - Prefer schema/template files for distributable examples. ## Acceptance Criteria - A package can declare a tracker template. - Setup shows the receiver what file will be created. - Receiver approval is required before writing. - Tests cover template creation and repeated setup.