/discover: build the queue

No browser needed. Run from the repo root:

npx jev discover

It prints counts and the top 50 queued jobs with scores. Takes about a minute. The first search of a day costs about six cents of JEV. A later one costs less, because a posting that has not changed keeps its rating.

Then show the user the top 15 as a short table (score, company, title, location, posted) and one line of totals. Mention jobs that were skipped for a reason they might want to override, grouped by reason, using npx jev status.

Options:

• --no-boards skips polling company boards (faster, fewer fresh postings).
• --limit N rates only N new jobs, for a quick check.

To include the user's own tracking sheet, they export it as CSV into data/imports/ first; every file there is read on the next discover.

If it fails with a TYPESAFE_API_KEY or OPENROUTER_API_KEY error or a missing profile, run npx jev doctor and follow its next step, or use /setup. If a source fails, the run continues without it and says so on stderr.