Adds a PRD Creator panel accessible from the status bar that lets Naomi
describe a goal and have Claude break it down into actionable tasks
written to hikari-tasks.json. Tasks can be reviewed, edited, reordered,
and executed directly from the panel. Uses the Lucide ScrollText icon to
distinguish it visually from the Todo List clipboard icon.
Also adds CODEBASE.md to the repo and gitignores hikari-tasks.json as a
user-generated data file.
