Add submitted and failed application tables to HTML dashboard

[cbrooker]

Summary

• Adds a Submitted Applications table showing all successfully auto-applied jobs, with columns: date submitted, job title (linked), score, source, location, duration, and posting link
• Adds a Failed Applications table showing all attempted-but-failed jobs, with columns: last attempted date, job title (linked), score, color-coded status chip (expired/captcha/login_issue/failed), failure reason, retry count, source, and posting link
• Adds two new summary stat cards — Submitted (green) and Failed (red) — alongside the existing Total/Ready/Scored/Strong Fit cards

Test plan

• Generated dashboard with synthetic test data covering 2 applied jobs, 3 failed jobs (expired, failed with reason, captcha), and 1 unscored job card — all 20 assertions passed
• Verified date formatting (YYYY-MM-DD HH:MM), duration formatting (2m 25s), status chips, failure reasons, and stat card counts
• Confirmed existing job card sections still render correctly

[Aram42]

Hey Chris, nice job!
Quick question - since I haven't used the tool yet, if I run it once and then again after a week or a month, will it not reapply to the same jobs that are already marked as submitted?

[cbrooker]

No, once you've applied to a job it's marked in the DB and won't be applied to a second time.