- loadSortieData: call applyTrailAndCursor() after sortie load so map
polylines appear when allPoints already populated from datebar
- loadDiveData: split into Phase1 (track only, batched by 4) + Phase2
(series + sub, batched by 4) — map draws as soon as tracks load
- loadShipSession split into fetchShipTrack + fetchShipSeries helpers
- T3: filter ship sessions by date (sess.start.slice(0,10) === filterDate)
- Pass date param from loadDate to loadDiveData
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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