test: smoke-test-career — full 3-season engine end-to-end

[wpinrui]

Summary

• Adds scripts/smoke-test-career.ts: a standalone Node.js script that drives a full 3-season career through the real Zustand store with no UI
• Polyfills localStorage so the persist middleware doesn't block execution in Node
• Uses simulateAIShot for the player's shots (testing the pipeline, not player skill)
• 369 assertions, all passing

What is tested

startCareer: roster = 50, country codes unique, shakiness/age/phase correct

Per-event (15 events total):

• Player and all 49 competitors have exactly 10 arrow scores
• All scores in [0, 10], no NaN
• Results: exactly 50 entries, positions 1–50 no gaps, medals to top 3 only, points match GDD table, total per event = 745

Per-season (3 seasons):

• Championship position matches pre-completion standings
• Shakiness only decreases (player < 30, no aging penalty)
• Player age increments correctly
• Still exactly 49 competitors, 50 unique country codes, all original nations present
• Exactly 5 rookies replace the 5 lowest-skill (post-aging) competitors; rookies aged 18–25

retire: 5 highlight slides max, last is championship; career history = 3 rows; phase = 'retired'

resetCareer: state fully wiped back to initial values

Bug discovered during development

The script initially pre-computed the "retiring 5" from the un-aged roster. But completeSeason ages all competitors first, then retires the bottom 5 of the aged roster — which can be a different set. Fixed by replicating the aging step via ageCompetitor before identifying which codes will be replaced.

Also

Opened issue #18 for pre-existing yarn lint errors in ShootingHUD (found during this task, pre-date this PR).

Usage

npx tsx scripts/smoke-test-career.ts 2>/dev/null