Three reviewer concerns land here:
- Felix #2: magic numbers 0.7 and 300 belong in named constants
- Sara #6: the position function had 4 branches and 2 thresholds with zero tests
- Leonie FINDING-05: at 320px viewport the flip-left could push the card
past the right edge — needed a viewport clamp
Move the function to src/lib/utils/hoverCardPosition.ts as a pure
(rect, viewport) → {top, left} mapping, with named exports CARD_WIDTH_PX,
CARD_HEIGHT_PX, CARD_GAP_PX, BOTTOM_BAND_RATIO, RIGHT_FLIP_THRESHOLD_PX.
Add a viewport clamp so left + CARD_WIDTH never exceeds the right edge.
Ten unit tests cover default placement, flip-up (both triggers), flip-left,
flip-right-edge clamp, and scroll offset. TranscriptionReadView passes the
current window viewport in on each call.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
060db69108